U.S. patent application number 15/202363 was filed with the patent office on 2016-11-10 for shock mounting cover glass in consumer electronic devices.
The applicant listed for this patent is Apple Inc.. Invention is credited to Stephen Brian Lynch, Adam Mittleman, Fletcher R. Rothkopf, Anna-Katrina Shedletsky.
Application Number | 20160327989 15/202363 |
Document ID | / |
Family ID | 44911600 |
Filed Date | 2016-11-10 |
United States Patent
Application |
20160327989 |
Kind Code |
A1 |
Shedletsky; Anna-Katrina ;
et al. |
November 10, 2016 |
SHOCK MOUNTING COVER GLASS IN CONSUMER ELECTRONIC DEVICES
Abstract
Apparatus, systems and methods for shock mounting glass for an
electronic device are disclosed. The glass for the electronic
device can provide an outer surface for at least a portion of a
housing for the electronic device. In one embodiment, the shock
mounting can provide a compliant interface between the glass and
the electronic device housing. In another embodiment, the shock
mounting can provide a mechanically actuated retractable. For
example, an outer glass member for an electronic device housing can
be referred to as cover glass, which is often provided at a front
surface of the electronic device housing.
Inventors: |
Shedletsky; Anna-Katrina;
(Cupertino, CA) ; Rothkopf; Fletcher R.;
(Cupertino, CA) ; Mittleman; Adam; (Redwood City,
CA) ; Lynch; Stephen Brian; (Cupertino, CA) |
|
Applicant: |
Name |
City |
State |
Country |
Type |
Apple Inc. |
Cupertino |
CA |
US |
|
|
Family ID: |
44911600 |
Appl. No.: |
15/202363 |
Filed: |
July 5, 2016 |
Related U.S. Patent Documents
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Application
Number |
Filing Date |
Patent Number |
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14552884 |
Nov 25, 2014 |
9430077 |
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15202363 |
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13670289 |
Nov 6, 2012 |
8896995 |
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14552884 |
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12780715 |
May 14, 2010 |
8305744 |
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13670289 |
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Current U.S.
Class: |
1/1 |
Current CPC
Class: |
G06F 3/044 20130101;
F16F 7/104 20130101; G06F 1/1626 20130101; G06F 1/1656 20130101;
Y10T 29/49002 20150115; G06F 1/181 20130101; G06F 1/1637 20130101;
H05K 5/0017 20130101; H05K 5/06 20130101; H05K 5/03 20130101; F16F
7/1028 20130101; F16F 7/108 20130101; G06F 3/0412 20130101; G06F
2200/1637 20130101 |
International
Class: |
G06F 1/16 20060101
G06F001/16; G06F 3/044 20060101 G06F003/044; G06F 3/041 20060101
G06F003/041; F16F 7/10 20060101 F16F007/10; F16F 7/104 20060101
F16F007/104 |
Claims
1-20. (canceled)
21. A portable electronic device, comprising: a housing; a display
coupled to the housing; a cover; and an opaque force sensor that
couples the cover to the housing.
22. The portable electronic device of claim 21, wherein the opaque
force sensor does not obstruct view of the display through the
cover.
23. The portable electronic device of claim 21, wherein the cover
is integrally formed with the display.
24. The portable electronic device of claim 21, wherein the opaque
force sensor allows movement of the cover in a direction normal to
a planar surface of the cover.
25. The portable electronic device of claim 21, wherein the opaque
force sensor includes a first material defining a gap and a second
material positioned in the gap.
26. The portable electronic device of claim 21, wherein the opaque
force sensor includes piezoelectric material.
27. The portable electronic device of claim 21, wherein the opaque
force sensor includes a polymer.
28. A portable electronic device, comprising: an enclosure; a cover
glass; a display, coupled to the enclosure, that is visible through
the cover glass; and a force sensor that couples the cover glass to
the housing and is not disposed directly between the display and
the cover glass.
29. The portable electronic device of claim 28, wherein the force
sensor includes silicone rubber.
30. The portable electronic device of claim 28, wherein the cover
glass is positioned over the display.
31. The portable electronic device of claim 28, wherein the force
sensor seals the portable electronic device.
32. The portable electronic device of claim 28, wherein cover glass
strain compresses the force sensor.
33. The portable electronic device of claim 28, wherein the force
sensor includes at least a first layer of a first material and a
second layer of a second material.
34. The portable electronic device of claim 28, wherein the force
sensor is not optically transparent.
35. A portable electronic device, comprising: a body; a display
coupled to the housing; a glass layer; and a sensor that: couples
the glass layer to the body; is optically opaque; and is operable
to detect strain of the glass layer or the body.
36. The portable electronic device of claim 35, wherein the glass
layer is a incorporated into a capacitive touch screen.
37. The portable electronic device of claim 35, wherein the glass
layer is coupled to the display.
38. The portable electronic device of claim 35, wherein the sensor
absorbs shock transmitted between the body and the glass layer.
39. The portable electronic device of claim 35, wherein the display
is positioned adjacent the glass layer.
40. The portable electronic device of claim 35, wherein the glass
layer forms an external surface of the portable electronic device.
Description
BACKGROUND OF THE INVENTION
[0001] Conventionally, small form factor devices, such as handheld
electronic devices, have a display arrangement that includes
various layers. The various layers usually include at least a
display technology layer, and may additionally include a sensing
arrangement and/or a cover window disposed over the display
technology layer. By way of example, the display technology layer
may include or pertain to a Liquid Crystal Display (LCD) that
includes a Liquid Crystal Module (LCM). The LCM generally includes
an upper glass sheet and a lower glass sheet that sandwich a liquid
crystal layer there between. The sensing arrangement may be a touch
sensing arrangement such as those used to create a touch screen.
For example, a capacitive sensing touch screen can include
substantially transparent sensing points or nodes dispersed about a
sheet of glass (or plastic). In addition, the cover window, which
is typically designed as the outer protective barrier of the
display arrangement.
[0002] The cover window, or glass cover, for a small form factor
device can be made of plastic or glass. Plastic is durable but
susceptible to being scratched. Glass is scratch resistant, but
brittle. The rigid nature of glass makes it susceptible to cracking
if subjected to significant forces. For example, users of handheld
electronic devices occasionally drop their device onto a floor or
other hard surface, and the resulting impact forces can cause the
glass to crack. In general, the thicker the glass, the stronger it
is. Unfortunately, however, with low profile handheld devices, the
glass cover is often relatively thin, and tends to be susceptible
to damage when the small form factor device is stressed as, for
example, when dropped onto a floor. Here, the glass cover may crack
or break as a result of being dropped onto the floor. As handheld
electronic devices become thinner, the glass cover sheets used on
the handheld electronic devices typically also becomes thinner and,
thus, more susceptible to damage.
[0003] Thus, there is a continuing need for improved approaches for
glass cover arrangements for electronic devices that are configured
to avoid unnecessary damage.
SUMMARY OF THE INVENTION
[0004] Apparatus, systems and methods for shock mounting a cover
glass for an electronic device are disclosed. The invention can be
implemented in numerous ways, including as a method, system, device
or apparatus (including graphical user interface). Several
embodiments of the invention are discussed below.
[0005] In one embodiment, a method for assembling an electronic
device can include at least providing a housing for an electronic
device, and compliantly attaching a cover glass to at least a
portion of one surface of the housing, whereby cover glass serves
as an outer surface for the at least a portion of one surface of
the housing.
[0006] In one embodiment, a consumer electronic device, can include
a cover glass, and a shock mount disposed between the cover glass
and a remaining mass of the electronic device. The shock mount is
configured to isolate the cover glass from the remaining mass of
the electronic device.
[0007] In another embodiment, a consumer electronic device can
include a housing, a cover glass provided adjacent to at least one
surface of the housing, and electrical components provided at least
partially internal to the housing. The electrical components
include at least a controller, a memory, a display, a sensor, and
an actuator. At least the controller and the sensor are used to
sense a drop event. The actuator can be coupled with the cover
glass for withdrawing the cover glass at least partially into the
housing in response to sensing the drop event, thereby protecting
for the cover glass.
[0008] Other aspects and advantages of the invention will become
apparent from the following detailed description taken in
conjunction with the accompanying drawings which illustrate, by way
of example, the principles of the invention.
BRIEF DESCRIPTION OF THE DRAWINGS
[0009] The invention will be readily understood by the following
detailed description in conjunction with the accompanying drawings,
wherein like reference numerals designate like structural elements,
and in which:
[0010] FIGS. 1A-1C are simplified diagrams of an electronic device
in accordance with one embodiment.
[0011] FIGS. 2A-2F are simplified diagrams of an electronic device
in accordance with another embodiment.
[0012] FIGS. 3A-3F are simplified diagrams of an electronic device
in accordance with yet another embodiment.
[0013] FIGS. 4A-4H are simplified diagrams of electronic device end
views, in accordance with additional embodiments.
[0014] FIGS. 5 and 6 are simplified diagrams of an electronic
device in accordance with more additional embodiments.
[0015] FIGS. 7A-7B are simplified diagrams of an electronic device
in accordance with still another embodiment.
[0016] FIGS. 8A-8C are simplified diagrams of an electronic device
in accordance with still yet another embodiment.
[0017] FIG. 9 is a flow diagram illustrating a tuning process
according to one embodiment.
DETAILED DESCRIPTION OF EMBODIMENTS OF THE INVENTION
[0018] Apparatus, systems and methods for shock mounting glass for
an electronic device are disclosed. The glass for the electronic
device can provide an outer surface for at least a portion of a
housing for the electronic device. For example, an outer glass
member for an electronic device housing can be referred to as cover
glass, which is often provided at a front surface of the electronic
device housing. Alternatively, as another example, the glass for
the electronic device can be a glass member provide internal to an
electronic device housing.
[0019] In one embodiment, the shock mounting can provide a
compliant interface between the glass and the electronic device
housing. In another embodiment, the shock mounting can provide a
mechanically actuated retractable.
[0020] Since handheld electronic devices and portable electronic
devices are potentially mobile, they can be subjected to various
different impact events and stresses that stationary devices are
not subjected to. The apparatus, systems and methods for shock
mounting glass are well suited for cover glasses or displays (e.g.,
LCD displays) assembled in small form factor electronic devices
such as handheld electronic devices (e.g., mobile phones, media
players, personal digital assistants, remote controls, etc.). The
apparatus, systems and methods for shock mounting glass can also be
used for cover glasses or displays for relatively larger form
factor electronic devices (e.g., portable computers, tablet
computers, displays, monitors, televisions, etc.), which may also
be portable.
[0021] Embodiments of the invention are discussed below with
reference to FIGS. 1-9. However, those skilled in the art will
readily appreciate that the detailed description given herein with
respect to these figures is for explanatory purposes as the
invention extends beyond these limited embodiments. The
illustrations provided in these figures are not necessarily drawn
to scale; instead, the illustrations are presented in a manner to
facilitate presentation.
[0022] FIGS. 1A-1C are simplified diagrams of an electronic device
100 in accordance with one embodiment. The electronic device 100
may, for example, be embodied as portable or handheld electronic
device having a thin form factor (or low profile). The electronic
device 100 can, for example, correspond to a media player, a media
storage device, a Portable Digital Assistant (PDA), a tablet PCs, a
computer, a cellular phone, a smart phone, a GPS unit, a remote
control, and the like.
[0023] As shown in perspective view in FIG. 1A, the electronic
device 100 includes a housing 102 that serves as the outer surface
for the electronic device 100. Electrical components (not shown)
are disposed within the housing 102. The electrical components can
include a controller (or processor), memory, battery, and a
display. Additionally, the electronic device 100 has a cover glass
104. A tunable shock mount 105 can be disposed between the cover
glass and the housing 102.
[0024] The cover glass 104 may be provided over a display area 108.
The display area 108 can be disposed within the housing 102 of the
electronic device 100. In this embodiment, the electronic device
100 includes a full view or substantially full view display area
108 that consumes a majority if not all of the front surface of the
electronic device 100. The display area 108 may be embodied in a
variety of ways. In one example, the display area 108 consists of
at least a display such as a flat panel display and more
particularly an LCD display.
[0025] The cover glass 104 serves as an external surface, i.e., top
(or front) surface, for the electronic device 100. The cover glass
104 can be at least partially clear or highly translucent so that
the display area 108 can be viewed through the cover glass 104. The
cover glass 104 can also resists scratching and therefore provides
a substantially scratch-resistance surface for the top surface of
the housing 102 for the electronic device 100.
[0026] The display area 108 may alternatively or additionally
include a touch sensing device positioned over a display screen.
For example, in one embodiment, the display area 108 may include
one or more glass layers having capacitive sensing points
distributed thereon. Each of these components can be separate
layers or they may be integrated into one or more stacks. In one
embodiment, the cover glass 104 can act as the outer most layer of
the display area 108.
[0027] The electronic device 100 may include a display region
(e.g., the display area 108) that includes various layers. The
various layers may include at least a display, and may additionally
include a sensing arrangement disposed over the display. In some
cases, the layers may be stacked and adjacent one another, and may
even be laminated thereby forming a single unit. In other cases, at
least some of the layers are spatially separated and not directly
adjacent. For example, the sensing arrangement may be disposed on
or over the display, or can be disposed above the display such that
there is a gap there between. By way of example, the display may
include a Liquid Crystal Display (LCD) that includes a Liquid
Crystal Module (LCM). The LCM generally includes at least an upper
glass sheet and a lower glass sheet that at least partially
sandwich a liquid crystal layer there between. The sensing
arrangement may be a touch sensing arrangement such as those used
to create a touch screen.
[0028] For example, a capacitive sensing touch screen can include
substantially transparent sensing points or nodes dispersed about
cover glass. The cover glass can serve as the outer protective
barrier for the display region. The cover glass is typically
adjacent the display region but can also be integrated with the
display regions, such as another layer (outer protective layer)
therefore.
[0029] As shown in FIG. 1A, the cover glass 104 can extend across
the entire top surface of the housing 102. In such a case, the
edges of the cover glass 104 are aligned, or substantially aligned,
with the sides of the housing 102. Due in part to such external
exposure, the cover glass 104 can be damaged when the electronic
device 100 is stressed as for example in a drop event.
[0030] As a result, the cover glass 104 can be is often not the
strongest component of the electronic device 100 in terms of
strength against bending and damage if dropped. By way of example,
stress to the cover glass 104 can result in damage, such as cracks
or breaks.
[0031] Given that the thickness of the cover glass 104 can be
rather thin (i.e., less than a few millimeters), the cover glass
104 if not carefully arranged can be susceptible to cracking or
breaking if a significant force is imposed thereon, such as by a
drop event where the electronic device 100 is accidentally dropped.
Therefore the cover glass 104 can be suitably arranged with the
tunable shock mount 105, which can be tuned so as to limit
susceptibility to damage.
[0032] The tunable shock mount 105 may be disposed between the
cover glass 104 and a remaining mass of the electronic device. As
particularly shown in sequential end views of the electronic device
100 before a shock event in FIG. 1B, and after a shock event in
FIG. 1C, the tunable shock mount 105 can provide compression and
dampening, so as to isolate the cover glass 104 from the remaining
mass of the electronic device 100. The cover glass 104 has a
substantially planar surface, and the tunable shock mount 105 is
arranged so as to provide compression and dampening along a
direction normal to the planar surface of the cover glass 104 (for
illustrative purposes in FIG. 1C, the direction normal to the
planar surface is shown by a notional arrow with the legend
"N").
[0033] In response to such shock events, the cover glass can
resonate. The cover glass can have a corresponding resonant
frequency. Similarly, the remaining mass of the electronic device
can have a corresponding resonant frequency. The tunable shock
mount can be tuned to have a resonant frequency that is
substantially lower than the resonant frequencies of the cover
glass and the remaining mass of the electronic device.
Additionally, the tunable shock mount can be tuned so as to be
substantially critically damped.
[0034] Further measures can also be taken to limit damage to the
cover glass 104. The glass material for the cover glass 104 can be
selected from available glass that is stronger. For example,
alumino silicate glass (e.g., DVTS from Corning) is one suitable
choice for the glass material for the cover glass 104. Other
examples of glass materials include, but are not limited to
including, sodalime, borosilicate, and the like. Additionally, the
edges of the cover glass pieces can be configured to correspond to
a particular predetermined geometry. By machining the edges of the
cover glass pieces to correspond to the particular predetermined
geometry, the cover glass pieces can become stronger and thus less
susceptible to damage.
[0035] Moreover, the cover glass pieces can be chemically treated
for further strengthening. One suitable chemical treatment is to
place the cover glass pieces in a chemical bath containing
potassium (e.g., KNO.sub.3) for a period of time (e.g., several
hours) at an elevated temperature. The chemical treatment can
desirably result in higher compression stresses at the surface of
the cover glass pieces. The surface of the cover glass pieces
includes the edges of the cover glass pieces. The higher
compression stresses may be the result of K+ ions effectively
replacing some Na+ ions at or near the surface of the cover
glass.
[0036] As previously discussed, glass covers can be used as an
outer surface of portions of a housing for electronic devices,
e.g., handheld electronic devices. A handheld electronic device
may, for example, function as a media player, phone, internet
browser, email unit or some combination of two or more of such. A
handheld electronic device generally includes a housing and a
display area. With reference to FIGS. 2A-2F, and FIGS. 3A-3F
different handheld electronic devices having cover glass (or glass
windows) may be assembled. By way of example, the handheld
electronic devices may correspond to an iPhone.TM. or iPod.TM.
manufactured by Apple Inc. of Cupertino, Calif.
[0037] FIGS. 2A, 2B and 2C are a diagrammatic representation of an
electronic device 200 according to one embodiment. FIG. 2A
illustrates a top view for the electronic device 200. FIG. 2B
illustrates a cross-sectional side view for the electronic device
200 with respect to reference line A-A' in FIG. 2A. FIG. 2C
illustrates a cross-sectional side view for the electronic device
200 with respect to reference line B-B' in FIG. 2A.
[0038] The electronic device 200 can include a housing 202 that has
a glass cover window 204 (cover glass) as a top surface. Tunable
shock mount 205 can be disposed between the housing 202 and the
cover window 204. The cover window 204 is primarily translucent so
that a display assembly 208 is visible through the cover window
204. The display assembly 208 can, for example, be positioned
adjacent the cover window 204. The display assembly 208 can, for
example, be a LCD module. The housing 202 can also contain internal
electrical components besides the display assembly, such as a
controller (processor), memory, communications circuitry, etc.
[0039] By way of example, the display assembly 208 may include a
Liquid Crystal Display (LCD) that includes a Liquid Crystal Module
(LCM). In one embodiment, the cover window 204 is integrally formed
with the LCM. Advantageously, the housing 202 need not include a
bezel for the cover window 204. Instead, the cover window 204 can
extend across the top surface of the housing 202 such that the
edges of the cover window 204 are aligned (or substantially
aligned) with the sides of the housing 202.
[0040] The cover window 204 may generally be arranged or embodied
in a variety of ways. By way of example, the cover window 204 may
be configured as a protective glass piece that is positioned over
an underlying display such as a flat panel display (LCD) or touch
screen display (LCD and a touch layer). Alternatively, the cover
window 204 may effectively be integrated with a display, i.e.,
glass window may be formed as at least a portion of a display.
Additionally, the cover window 204 may be substantially integrated
with a touch sensing device such as a touch layer associated with a
touch screen. In some cases, the cover window 204 can serve as the
outer most layer of the display area.
[0041] As shown in top view in FIG. 2A and as shown in
cross-sectional views in FIGS. 2B and 2C, the housing 202 of the
electronic device has a front surface, a back surface and side
surfaces. The tunable shock mount 205 can be disposed between the
cover glass 204 and the front surface of the housing 202. The
electrical components can be provided at least partially internal
to the housing. The electrical components can include at least the
controller, the memory, and the display assembly 208. The display
assembly can be provided at or adjacent the front surface of the
housing, wherein the cover glass 204 is provided at or over the
front surface of the housing such that it is provided over the
display assembly 208.
[0042] As shown in top view in FIG. 2A, the cover glass 204 can
have a substantially planar surface, and an outer perimeter
surrounding the substantially planar surface. As particularly shown
in top view in FIG. 2A and in cross-sectional views in FIGS. 2B and
2C the tunable shock mount 205 can be disposed adjacent to the
outer perimeter, between the cover glass and the front surface of
the housing. As particular shown in cross section in FIG. 2C, a
central aperture in the tunable shock mount 205 can provide an
unobstructed view of the display assembly 208 through the cover
glass 204.
[0043] A material of the tunable shock mount 205 can be selected,
dimensioned and/or arranged in a pattern or patterns so as to
provide for suitable tuning. A resonant frequency of the tunable
shock mount 205 can be tuned so as to be substantially lower than a
resonant frequency of the cover glass 204 and/or a resonant
frequency of the remaining mass of the electronic device 200. The
tunable shock mount 205 can be tuned so as to be substantially
critically damped.
[0044] A material of the tunable shock mount 205 may include a
polymer, a foam, a gel, a viscoelastic material, a shape memory
material, an exothermic material, an optically transparent
material, a silicone rubber material or other suitable material.
Depending in part upon the material or materials selected for the
tunable shock mount 205, and upon parameters such as compressive
stiffness and/or dampening of such material or materials,
dimensions of the tunable shock mount 205 such as a width dimension
"w" and/or a thickness dimension "t" shown in cross-sectional views
in FIGS. 2B and 2C may be selected so as to provide tuning.
[0045] FIGS. 2D, 2E and 2F are a diagrammatic representation of an
electronic device 200' according to another embodiment, which is
similar in many ways to the embodiment just discussed with respect
to FIGS. 2A, 2B and 2C. Similar structures have similar reference
numerals and dimension designations. FIG. 2D illustrates a top view
for the electronic device 200'. FIG. 2E illustrates a
cross-sectional side view for the electronic device 200' with
respect to reference line A-A' in FIG. 2D. FIG. 2F illustrates a
cross-sectional side view for the electronic device 200 with
respect to reference line B-B' in FIG. 2D.
[0046] The electronic device 200' can include a housing 202' that
has a glass cover window 204' (cover glass) as a top surface.
Tunable shock mount 205' can be disposed between the housing 202'
and the cover window 204'. As shown in top view in FIG. 2D, the
cover glass 204' can have a substantially planar surface, and an
outer perimeter surrounding the substantially planar surface. As
particularly shown in top view in FIG. 2D and in cross-sectional
views in FIGS. 2E and 2F the tunable shock mount 205 can be
disposed adjacent to the outer perimeter, between the cover glass
and the front surface of the housing. As particular shown in cross
section in FIG. 2F, an aperture in the tunable shock mount 205' can
provide an unobstructed view of the display assembly 208' through
the cover glass 204'.
[0047] Depending in part upon the material or materials selected
for the tunable shock mount 205', and upon parameters such as
compressive stiffness and dampening of such material or materials,
dimensions of the tunable shock mount 205' such as a width
dimension "w" and/or a thickness dimension "t" shown in
cross-sectional views in FIGS. 2E and 2F may be selected so as to
provide tuning.
[0048] The cover window 204' is primarily translucent so that a
display assembly 208' is visible through the cover window 204'. The
display assembly 208' can, for example, be positioned adjacent the
cover window 204'. The display assembly 208' can, for example, be a
LCD module. The housing 202' can also contain internal electrical
components besides the display assembly, such as a controller
(processor), memory, communications circuitry, etc. By way of
example, the display assembly 208' may include a Liquid Crystal
Display (LCD) that includes a Liquid Crystal Module (LCM). In one
embodiment, the cover window 204' is integrally formed with the
LCM. Advantageously, the housing 202' need not include a bezel for
the cover window 204'. Instead, the cover window 204' can extend
across the top surface of the housing 202' such that the edges of
the cover window 204' are aligned (or substantially aligned) with
the sides of the housing 202'.
[0049] As a front surface of electronic device 200' also includes a
click wheel control 210, the cover window 204' does not cover the
entire front surface of electronic device 200'. The electronic
device 200' essentially includes a partial display area that covers
a portion of the front surface.
[0050] The cover window 204' may generally be arranged or embodied
in a variety of ways. By way of example, the cover window 204' may
be configured as a protective glass piece that is positioned over
an underlying display such as a flat panel display (LCD) or touch
screen display (LCD and a touch layer). Alternatively, the cover
window 204' may effectively be integrated with a display, i.e.,
glass window may be formed as at least a portion of a display.
Additionally, the cover window 204' may be substantially integrated
with a touch sensing device such as a touch layer associated with a
touch screen. In some cases, the cover window 204' can serve as the
outer most layer of the display area.
[0051] FIGS. 3A-3F are simplified diagrams of an electronic device
in accordance with yet another embodiment, which (except as shown
and specifically discussed) is similar in many ways to the
embodiments just discussed with respect to FIGS. 2A-2F. Similar
structures have similar reference numerals.
[0052] Electronic device 300 (300') can include housing 302 (302')
that has a cover glass/glass cover window 304 (304') as a top
surface. The tunable shock mount 305 (305') can be disposed between
the cover glass 304 (304') and a front surface of the housing 302
(302'). As shown in cross-sectional side views in FIGS. 3C and 3F,
an optically transparent material having a thickness dimension "t"
may be used in the tunable shock mount 305 (305'), so that the
tunable shock mount 305 (305') may be interposed between a display
assembly 308 (308') and the cover glass 304 (304') while still
providing an unobstructed view of the display assembly 308 (308')
through the cover glass 304 (304'). In particular, the optically
transparent material of the tunable shock mount 305 (305') can
extend over a central portion of a display area of the display
assembly 308 (308').
[0053] As shown in FIGS. 3D-3F, since a front surface of electronic
device 300' also includes a click wheel control 310, the cover
window 304' does not cover an entire front surface of electronic
device 300'. The electronic device 300' essentially includes a
partial display area that covers a portion of the front
surface.
[0054] FIGS. 4A-4H are simplified diagrams of electronic device end
views in accordance with various additional embodiments, which are
generally similar to embodiments already discussed, except for
additional patterned arrangements of the tunable shock mount as
shown in FIGS. 4A-4H. As shown using hatching to highlight
different shock mount materials, the tunable shock mount can
comprise a plurality of different materials each respectively
having substantially different compressive stiffnesses. The tunable
shock mount can be tuned to a plurality of frequencies based at
least in part on the different compressive stiffnesses.
[0055] Further, the tunable shock mount can be tuned based at least
in part on a patterned arrangement of the different materials. In
particular, the cover glass can have a substantially planar
surface, and the tunable shock mount may comprise a plurality of
different materials disposed at locations adjacent to the planar
surface of the cover glass, so that the tunable shock mount is
tuned based at least in part on locations of the different
materials.
[0056] As shown in FIG. 4A, the tunable shock mount 405 may
comprise a plurality of layers 406, 407 of different materials
stacked along a direction normal to the planar surface of the cover
glass. Each of the layers 406, 407 can have respective thickness
dimensions h1, h2 extending along the direction normal to the
planar surface of the cover glass. The tunable shock mount can be
tuned based at least in part on the thickness dimensions h1, h2 of
the layers.
[0057] As shown in remaining FIGS. 4B-4H the tunable shock mount
may comprise a plurality of projections each extending along the
direction normal to the planar surface of the cover glass. The
tunable shock mount can be tuned based at least in part on a
plurality of the projections. Further, the tunable shock mount can
be tuned based at least in part on a patterned arrangement of the
projections.
[0058] As shown in remaining FIGS. 4B-4H the projections can each
having respective height dimensions extending along the direction
normal to the planar surface of the cover glass. The tunable shock
mount can be tuned based at least in part on the height dimensions
of the projections.
[0059] For example, as shown in FIG. 4B, the tunable shock mount
405 may comprise a spaced apart, patterned arrangement of
projections each extending along the direction normal to the planar
surface of the cover glass. The projections can be spaced apart
from one another by a distance d. The projections can each have
respective height dimensions h extending along the direction normal
to the planar surface of the cover glass.
[0060] Similar to FIG. 4B, for the tunable shock mount 405 shown in
FIG. 4C, the projections can likewise be spaced apart from one
another a distance d in a patterned arrangement. However, in FIG.
4C the projections can each have respective height dimensions h1
extending along the direction normal to the planar surface of the
cover glass, while the projections can be contiguous with a base
layer having a thickness h2.
[0061] Similar to FIG. 4C, for the tunable shock mount 405 shown in
FIG. 4D, the projections can likewise be spaced apart from one
another a distance d in a patterned arrangement. The projections
can likewise each have respective height dimensions h1 extending
along the direction normal to the planar surface of the cover
glass, while the projections can be contiguous with a base layer
having a thickness h2. However, in FIG. 4D a first material is used
for the projections contiguous with the base layer 406. A second
material can fill gaps 407 between the spaced apart
projections.
[0062] In the tunable shock mount 405 shown in FIG. 4E projections
406 of a first material can be spaced apart from one another a
distance d in a patterned arrangement. The projections can each
have respective height dimensions h extending along the direction
normal to the planar surface of the cover glass. A second material
can fill gaps 407 between the spaced apart projections.
[0063] The tunable shock mount 405 of FIG. 4F shows stacked
projections 406, 407 of different layered materials having
thicknesses h1, h2. The stacked projections can be spaced apart
from one another a distance d in a patterned arrangement.
[0064] The tunable shock mount 405 of FIG. 4G shows primary and
secondary projections 406, 407 of different materials having
thicknesses h1, h2. The primary projections can be spaced apart
from one another a distance d1, and the secondary projections can
be spaced apart from the primary projections a distance d2, in a
patterned arrangement. The tunable shock mount 405 of FIG. 4H is
similar to what is shown in FIG. 4G, except in FIG. 4H the same
material can be used for the primary and secondary projections 406,
407.
[0065] FIGS. 5 and 6 are simplified diagrams of an electronic
device 500, 600 in accordance with additional embodiments. FIG. 5
shows a housing 502 and a cover glass 504 in cross sectional view
having a tunable shock mount 505 disposed there between. The
tunable shock mount 505 can comprise an inflatable bladder 506
filled with a fluid 507. Tuning can be done in various ways such as
by selection of materials for the bladder 506 and fluid 507, and by
varying an amount of inflation.
[0066] FIG. 6 shows an electronic device 600 in cross sectional
view. A housing 602 and a cover glass 604 is shown having a tunable
shock mount 605 disposed there between. The housing can have a
front surface, a back surface and side surfaces. Electrical
components can be provided at least partially internal to the
housing. The electrical components can include a controller, a
memory, and a display 608. The display can be provided at or
adjacent the front surface of the housing, and the cover glass can
be provided at or over the front surface of the housing such that
it is provided over the display.
[0067] Electrical components can be damaged by water. Accordingly,
in one embodiment, a water seal 620 can be disposed between the
cover glass and the front surface of the housing, which can help to
protect the electrical components disposed within the housing from
water damage. In FIG. 6, for illustrative purposes, the water seal
620 is shown as adjacent to the tunable shock mount 605. However,
is should be understood that the water seal 620 and tunable shock
mount 605 can be provided in various arrangements. For example, at
least one material may be selected to provide the water seal 620 as
well as the compression and dampening of the tunable shock mount
605. Alternatively, a material of the water seal 620 may combined
with a compressive/dampening material of the tunable shock mount
605.
[0068] FIGS. 7A-7B are simplified diagrams of an electronic device
700 in accordance with still another embodiment. FIGS. 7A-7B show a
housing 702 and a cover glass 704 and a tunable shock mount 705 in
cross sectional view. Electrical components can be provided at
least partially internal to the housing. The electrical components
can include a controller, a memory, and a display, and can further
include a sensor 608 for sensing freefall of a drop event.
[0069] As illustrated in sequential views, before the drop event in
FIG. 7A and during freefall of the drop event in FIG. 7B, at least
one actuator 730 can be coupled with the cover glass 704 for
withdrawing the cover glass 704 at least partially into the housing
702 in response to s shock event (e.g., sensing freefall of the
drop event), so as to provide protection for the cover glass 704.
As particularly shown in FIG. 7B, the cover glass 704 can be
withdrawn by the at least one actuator 730 so as to be sub-flush
with the housing, so that structure of the housing can protect the
cover glass 704 from subsequent impact and shock, resulting from
the shock event.
[0070] Actuators such as solenoid actuators, or piezoelectric
actuators employing a piezoelectric material, can be used to
implement the at least one actuator 730. Such actuators can also be
used as haptic actuators for generating a haptic event using the
cover glass.
[0071] FIGS. 8A-8C are simplified diagrams of an electronic device
800 in accordance with still yet another embodiment. The electronic
device can include a sensor for sensing a user movement of a cover
glass. For example, the piezoelectric material just discussed can
be likewise arranged between a housing 802 and the cover glass 804,
for sensing compliant movement of the cover glass 804, as a user's
hand squeezes the cover glass 804 against the housing 802 (as shown
in the figures.)
[0072] FIG. 8A illustrates a top view that shows a display of a
user interface 812, for displaying a user selectable item, and for
selecting the user selectable item in response to sensing the user
movement of the cover glass. In the example shown in FIG. 8A, the
user interface 812 is a video player interface, and the user
selectable item is a control to begin playing (or begin pausing)
the video player.
[0073] FIGS. 8A and 8B show sequential end views, before the cover
glass movement in FIG. 8B and after the cover glass movement in
FIG. 8C. The user's movement of the cover glass 804 can be along a
direction normal to a planar surface of the cover glass 804 (for
illustrative purposes in FIG. 8C, the direction normal to the
planar surface is shown by a notional arrow with the legend "N").
FIG. 8C shows compression of the tunable shock mount 805, as the
user's hand squeezes the cover glass 804 against the housing
802.
[0074] FIG. 9 is a flow diagram illustrating a tuning process 900
of one embodiment. The tuning process may begin with selecting 902
one or more materials for a tunable shock mount. The tunable shock
mount may comprise a plurality of different materials each
respectively having substantially different compressive
stiffnesses. The tuning may comprise selecting the materials for
tuning to a plurality of frequencies based at least in part on the
different compressive stiffnesses. Similarly, the tuning may
comprise selecting 902 one or more dimensions of the shock
mount.
[0075] Further, the tuning may comprise patterning an arrangement
of the shock mount, for example, patterning an arrangement of a
plurality of materials of the shock mount. The cover glass can have
a substantially planar surface, the tunable shock mount may
comprise a plurality of projections each extending along a
direction normal to the planar surface of the cover glass, and the
tuning may comprise patterning an arrangement of the
projections.
[0076] The tuning process 900 may continue with a decision 904 that
determines whether the tunable shock mount has a desired tuning
response. The decision 904 can, for example, be made using finite
element modeling and simulation such as ANSYS.TM. computer based
engineering simulation software. The decision 904 can also be made
using physical assembly and shock testing methods.
[0077] Accordingly, various drop scenarios of the electronic device
can be performed. Differing impacts of the electronic device result
in differing shocks exciting differing vibrational modes and
frequencies, which in turn result in differing types and degrees of
damage to the cover glass. Simulated or physical testing can
particularly focus on those drop scenarios that are most common,
and/or those drop scenarios that cause significant damage to the
cover glass.
[0078] The decision 904 can determine whether the shock mount has a
desired resonant frequency and/or dampening for isolating the cover
glass from the remaining mass of the electronic device. The shock
mount can be substantially critically damped. The cover glass can
have a resonant frequency, and the tunable shock mount can have a
resonant frequency that is substantially lower than the resonant
frequency of the cover glass. Similarly, the remaining mass of the
electronic device can have a resonant frequency, and the tunable
shock mount can have a resonant frequency that is substantially
lower than the resonant frequency of the remaining mass of the
electronic device.
[0079] When the decision 904 determines that the tunable shock
mount does not have the desired tuning response, then the tuning
process 900 returns to selecting dimensions and/or patterned
arrangement and/or materials for the tunable shock mount. When the
decision 904 determines that the tunable shock mount has the
desired tuning response, the tuning process 900 can then end.
[0080] In one embodiment, the glass being compliantly mounted,
e.g., via a shock mount, to an electronic device housing need not
be an exterior surface for the electronic device housing. For
example, the glass can pertain to an inner member such as a display
device assembly (e.g., LCD assemble glass member).
[0081] In one embodiment, the size of the glass cover depends on
the size of the associated electronic device. For example, with
handheld electronic devices, the glass cover is often not more than
five (5) inches diagonal. As another example, for portable
electronic devices, such as smaller portable computers or tablet
computers, the glass cover is often between four (4) to twelve (12)
inches diagonal. As still another example, for portable electronic
devices, such as full size portable computers, displays or
monitors, the glass cover is often between ten (10) to twenty (20)
inches diagonal or even larger.
[0082] However, it should be appreciated that with larger the
screen sizes, the thickness of the glass layers may need to be
greater. The thickness of the glass layers may need to be increased
to maintain planarity of the larger glass layers. While the
displays can still remain relatively thin, the minimum thickness
can increase with increasing screen size. For example, the minimum
thickness of the glass cover can correspond to about 0.4 mm for
small handheld electronic devices, about 0.6 mm for smaller
portable computers or tablet computers, about 1.0 mm or more for
full size portable computers, displays or monitors, again depending
on the size of the screen. The thickness of the glass cover depends
on the application and/or the size of electronic device. While the
current trend is to accommodate thinner and thinner devices, some
examples for thicknesses of the glass cover can correspond to about
1 mm for small handheld electronic devices, about 2 mm for smaller
portable computers or tablet computers, about 3 mm or more for full
size portable computers, displays or monitors, again depending on
the size of the screen.
[0083] The advantages of the invention are numerous. Different
aspects, embodiments or implementations may yield one or more of
the following advantages. One advantage of the invention is that
cover glass can be protected from damage that would otherwise
result from a drop event. For example, shock mounting can provide a
compliant interface between the cover glass and an electronic
device housing. In another example, the shock mounting can provide
a mechanically actuated retractable. Another advantage is that
electronics disposed within a housing can be protected from water
damage by using a water seal. Another advantage is a user interface
can employ user movement of a cover glass for providing user
input.
[0084] Numerous specific details are set forth in order to provide
a thorough understanding of the present invention. However, it will
become obvious to those skilled in the art that the invention may
be practiced without these specific details. The description and
representation herein are the common meanings used by those
experienced or skilled in the art to most effectively convey the
substance of their work to others skilled in the art. In other
instances, well-known methods, procedures, components, and
circuitry have not been described in detail to avoid unnecessarily
obscuring aspects of the present invention.
[0085] In the foregoing description, reference to "one embodiment"
or "an embodiment" means that a particular feature, structure, or
characteristic described in connection with the embodiment can be
included in at least one embodiment of the invention. The
appearances of the phrase "in one embodiment" in various places in
the specification are not necessarily all referring to the same
embodiment, nor are separate or alternative embodiments mutually
exclusive of other embodiments. Further, the order of blocks in
process flowcharts or diagrams representing one or more embodiments
of the invention do not inherently indicate any particular order
nor imply any limitations in the invention.
[0086] The many features and advantages of the present invention
are apparent from the written description and, thus, it is intended
by the appended claims to cover all such features and advantages of
the invention. Further, since numerous modifications and changes
will readily occur to those skilled in the art, the invention
should not be limited to the exact construction and operation as
illustrated and described. Hence, all suitable modifications and
equivalents may be resorted to as falling within the scope of the
invention.
* * * * *