U.S. patent application number 11/935475 was filed with the patent office on 2008-03-13 for 2d/3d display and method for forming 3d image.
This patent application is currently assigned to AU OPTRONICS CORP.. Invention is credited to Chih-Ming Chang, Chih-Jen Hu, Yung-Lun Lin, Ming-Chou Wu.
Application Number | 20080062172 11/935475 |
Document ID | / |
Family ID | 36756115 |
Filed Date | 2008-03-13 |
United States Patent
Application |
20080062172 |
Kind Code |
A1 |
Lin; Yung-Lun ; et
al. |
March 13, 2008 |
2D/3D DISPLAY AND METHOD FOR FORMING 3D IMAGE
Abstract
A display capable of providing 2D and/or 3D images. The display
comprises a liquid crystal display device and a self-emissive
display device. The self-emissive display device is disposed on the
rear of the liquid crystal display device, in which the liquid
crystal display device provides a first image and the self-emissive
display device a second image and a backlight source. One of the
first and second images comprises a parallax barrier pattern for
forming a three-dimensional (3D) image, and the other is a 2D
image.
Inventors: |
Lin; Yung-Lun; (Yilan
County, TW) ; Hu; Chih-Jen; (Hsinchu City, TW)
; Wu; Ming-Chou; (Nantou County, TW) ; Chang;
Chih-Ming; (Taoyuan County, TW) |
Correspondence
Address: |
THOMAS, KAYDEN, HORSTEMEYER & RISLEY, LLP
600 GALLERIA PARKWAY, S.E.
STE 1500
ATLANTA
GA
30339-5994
US
|
Assignee: |
AU OPTRONICS CORP.
No. 1, Li-Hsin Rd. 2 Science-Based Industrial Park
Hsinchu
TW
300
|
Family ID: |
36756115 |
Appl. No.: |
11/935475 |
Filed: |
November 6, 2007 |
Related U.S. Patent Documents
|
|
|
|
|
|
Application
Number |
Filing Date |
Patent Number |
|
|
11117257 |
Apr 28, 2005 |
|
|
|
11935475 |
Nov 6, 2007 |
|
|
|
Current U.S.
Class: |
345/424 ;
348/E13.03; 348/E13.044 |
Current CPC
Class: |
H04N 13/31 20180501;
G02B 30/27 20200101; G02F 1/1336 20130101; H04N 13/356 20180501;
H04N 13/361 20180501; H04N 13/30 20180501; H04N 13/312
20180501 |
Class at
Publication: |
345/424 |
International
Class: |
G06T 17/00 20060101
G06T017/00 |
Foreign Application Data
Date |
Code |
Application Number |
Feb 3, 2005 |
TW |
94103365 |
Claims
1. A method for forming a 3D image, comprising: forming a 2D image
by a liquid crystal display device; and forming an image with a
parallax barrier pattern behind the 2D image by a self-emissive
display device, such that a 3D image is observed by a viewer from
the liquid crystal display device side by transforming the 2D image
through the parallax barrier pattern.
2. The method as claimed in claim 1, wherein the parallax barrier
pattern comprises a plurality of dark strips parallel or
perpendicular to each other.
3. The method as claimed in claim 2, further comprising adjusting
the width of each dark strip and the space therebetween according
to a perpendicular distance of the viewer to the center of the
liquid crystal display device.
4. The method as claimed in claim 2, further comprising adjusting
the shift of the dark strips in a perpendicular direction according
to a parallel distance of the viewer to the center of the liquid
crystal display device.
5. The method as claimed in claim 1, wherein the parallax barrier
pattern fully or partially overlaps the 2D image.
6. The method as claimed in claim 1, wherein the self-emissive
display device comprises an organic light-emitting device or a
plasma display device.
7. A method for forming a 3D image, comprising: forming a 2D image
by a self-emissive display device; and forming an image with a
parallax barrier pattern in front of the 2D image by a liquid
crystal display device, such that a 3D image is observed by a
viewer from the liquid crystal display device side by transferring
the 2D image through the parallax barrier pattern.
8. The method as claimed in claim 7, wherein the parallax barrier
pattern comprises a plurality of dark strips parallel or
perpendicular to each other.
9. The method as claimed in claim 8, further comprising adjusting
the width of each dark strip and the space therebetween according
to a perpendicular distance of the viewer to the center of the
liquid crystal display device.
10. The method as claimed in claim 8, further comprising adjusting
the shift of the dark strips in a perpendicular direction according
to a parallel distance of the viewer to the center of the liquid
crystal display device.
11. The method as claimed in claim 7, wherein the parallax barrier
pattern fully or partially overlaps the 2D image.
12. The method as claimed in claim 7, wherein the self-emissive
display device comprises an organic light-emitting device or a
plasma display device.
13. A method for forming a 3D image, comprising: forming a first 2D
image by a self-emissive display device; and forming a second 2D
image by a liquid crystal display device opposing to the
self-emissive display device; wherein one of the first and second
2D images comprises a parallax barrier pattern, such that a 3D
image is observed by a viewer from the liquid crystal display
device side by the parallax barrier pattern.
Description
CROSS REFERENCE TO RELATED APPILCATIONS
[0001] This application is a Divisional of pending U.S. patent
application Ser. No. 11/117,257, filed Apr. 28, 2005 and entitled
"2D/3D DISPLAY AND METHOD FOR FORMING 3D IMAGE," incorporated
herein by reference.
BACKGROUND
[0002] The invention relates to a flat panel display and in
particular to a flat panel display capable of providing 2D and 3D
images.
[0003] In a conventional stereoscopic or three-dimensional (3D)
display, users are required to wear a device, such as a shutter or
polarization glasses, that ensure left and right views are seen by
the correct eye. Such a stereoscopic display, however, suffers from
the drawback that the viewers must wear, or be very close to, the
device to separate left and right eye views.
[0004] Recently, many stereoscopic display designs, such as
lenticular and parallax designs have been proposed which do not
require use of shutter or polarization glasses. In these
stereoscopic display devices, specific optical devices such as
lenticular lens or parallax barriers are generally disposed on the
front or rear sides of image display devices. For example, a simple
stereoscopic image display device can be easily constituted by a
combination of such parallax barriers and a two-dimensional (2D)
display device, such as a liquid crystal display (LCD). Half the
pixels of the display device radiate light only in directions seen
by the left eye and half the pixels in directions seen by the right
eye through the parallax barrier, creating twin-view stereoscopic
images. Conventionally, the parallax barrier comprises a retarder
which suffers from the drawback of difficult alignment between the
LCD and the parallax barrier.
[0005] U.S. Pat. No. 6,157,424 discloses a 2D/3D image display, in
which two LCDs are employed. One of the LCDs provides image
information and the other parallax barrier image patterns. LCDS,
however, suffer from the drawback of higher power consumption due
to back light device.
SUMMARY
[0006] A 2D/3D display and methods for forming a 3D image are
provided. An embodiment of a 2D/3D display comprises a liquid
crystal display device and a self-emissive display device. The
liquid crystal display device provides a first image. The
self-emissive display device is disposed on the rear of the liquid
crystal display device, providing a backlight source and a second
image. One of the first and second images comprises a parallax
barrier pattern for forming a 3D image, and the other is a 2D
image.
[0007] An embodiment of a method for forming a 3D image comprising
forming a 2D image by a liquid crystal display device is provided.
An image with a parallax barrier pattern is formed behind the 2D
image by a self-emissive display device, such that a viewer sees a
3D image from the liquid crystal display device side by
transferring the 2D image through the parallax barrier pattern.
[0008] Additionally, an embodiment of a method for forming a 3D
image comprising forming a 2D image by a self-emissive display
device is provided. An image with a parallax barrier pattern is
formed in front of the 2D image by a liquid crystal display device,
such that a viewer sees a 3D image from the liquid crystal display
device side by transferring the 2D image through the parallax
barrier pattern.
DESCRIPTION OF THE DRAWINGS
[0009] A 2D/3D display and methods for forming a 3D image will
become more fully understood from the detailed description given
hereinbelow and the accompanying drawings, given by way of
illustration only and thus not intended to be limitative of the
invention.
[0010] FIGS. 1a and 2a are cross-sections of embodiments of 2D/3D
display of the invention.
[0011] FIGS. 1b, 1c, 2b, and 2c are cross-sections of embodiments
of methods for forming a 3D image of the invention.
[0012] FIGS. 3a and 3b are cross-sections of embodiments of
parallax barrier patterns of the invention.
[0013] FIG. 4 is a schematic diagram of relative positions of a
viewer and a display.
[0014] FIG. 5a is a schematic diagram of a 2D image fully
overlapping a parallax barrier pattern.
[0015] FIG. 5b is a schematic diagram of a 2D image partially
overlapping a parallax barrier pattern.
DETAILED DESCRIPTION
[0016] A 2D/3D display and methods for forming a 3D image will be
described in greater detail in the following. FIGS. 1a and 2a
illustrate embodiments of 2D/3D display 100. The display 100
comprises a self-emissive display device 102, a liquid crystal
display device 104, a detector device 108, and a control device
110. The liquid crystal display device 104 provides a first image,
such as a 2D image. Typically, the liquid crystal display device
104 comprises an upper substrate 104b, a lower substrate 104a, and
a liquid crystal layer 104c interposed between the upper and lower
substrates 104b and 104a, wherein color filters (not shown) may be
disposed on the upper or lower substrate 104b or 104a. The
self-emissive display device 102 is disposed on the rear of the
liquid crystal display device 104, serving as a backlight source
for the liquid crystal display device 104 and providing a second
image, such as a 2D image. In this embodiment, the self-emissive
display device 102 may comprise a plasma display device, an organic
light-emitting device, or other electroluminescent display device.
The first or second image presented on display 100 in a 2D mode may
comprise a clear pattern. For example, the self-emissive display
device 102 only serves as a backlight source without providing any
image information (that is, a clear pattern). The 2D image
information is provided by the liquid crystal display device 104.
Conversely, the 2D image information may be provided by the
self-emissive display device 102, while the liquid crystal display
device 104 does not display any image information. Moreover, the
first or second image may provide a parallax pattern formed by a 2D
image when the display in a 3D mode. For example, the parallax
barrier pattern may be provided by the self-emissive display device
102. The 2D image information provided by the liquid crystal
display device 104 may be transformed into the 3D image information
through the parallax barrier pattern. Conversely, the parallax
barrier pattern may be provided by the liquid crystal display
device 104. The 2D image information provided by the self-emissive
display device 102 may also be transformed into the 3D image
information through the parallax barrier pattern. In this case, the
liquid crystal display device 104 may not require color
filters.
[0017] The detector device 108 is coupled to the liquid crystal
display device 104, measuring a distance between a viewer and the
display 100. Moreover, the control device 110 is coupled to the
display device providing the parallax barrier pattern, such as the
self-emissive display device 102 (as shown in FIG. 1a) or the
liquid crystal display device (as shown in FIG. 2a), thereby
adjusting the parallax barrier pattern in the 3D mode according to
the distance between a viewer and the display 100.
[0018] FIG. 1b illustrates an embodiment of a method for forming a
3D image. A 2D image 103 is provided by the liquid crystal display
device 104. Another 2D image with a parallax barrier pattern is
provided by the self-emissive display device 102 disposed on the
rear of the liquid crystal display device 104, such that a 3D image
103 is observed by a viewer from the liquid crystal display device
104 side by transferring the 2D image 103 through the parallax
barrier pattern 101.
[0019] FIGS. 3a and 3b illustrate embodiments of parallax barrier
patterns 101. In FIG. 3a, the parallax barrier pattern 101
comprises a plurality of dark strips 101a parallel to each other.
In FIG. 3b, the parallax barrier pattern 101 comprises a plurality
of dark strips 101a perpendicular to each other. The 2D image 103
may fully overlap the parallax barrier pattern 101, as shown in
FIG. 5a, thereby completely transforming the 2D image 103 provided
by the liquid crystal display device 104 into a 3D image.
[0020] FIG. 1c illustrates another embodiment of a method for
forming a 3D image. In this embodiment, the difference from FIG. 1b
is that the 2D image provided by the self-emissive display device
102 comprises a clear pattern and at least one parallax barrier
pattern, such that the 2D image 103 in front of the parallax
barrier pattern is transferred into the 3D image and that in front
of the clear pattern is maintained without being transferred, as it
is observed by a viewer from the liquid crystal display device 104
side. That is, the display 100 may simultaneously display 2D and 3D
images. In this embodiment, the parallax barrier pattern partially
overlaps the 2D image 103. Moreover, the number and size of the
parallax barrier pattern and the position thereof with respect to
the 2D image 103 can be adjusted according to demands, as shown in
FIG. 5b.
[0021] FIG. 2b illustrates yet another embodiment of a method for
forming a 3D image. In this embodiment, the difference from FIG. 1b
is that the 2D image 103 is provided by the self-emissive display
device 102 and the 2D image with the parallax barrier pattern 101
provided by the liquid crystal display device 104 in front of the
self-emissive display device 102, such that the 2D image 103
provided by the self-emissive display device 102 is transferred
into the 3D image through the parallax barrier pattern 101, as it
is observed by a viewer from the liquid crystal display device 104
side.
[0022] FIG. 2c illustrates further another embodiment of a method
for forming a 3D image. In this embodiment, the difference from
FIG. 2b is that the 2D image provided by the liquid crystal display
device 104 comprises a clear pattern and at least one parallax
barrier pattern, such that the 2D image 103 behind the parallax
barrier pattern is transformed into the 3D image and the 2D image
103 behind the clear pattern is maintained without being
transferred, as it is observed by a viewer from the liquid crystal
display device 104 side.
[0023] FIG. 4 is a schematic diagram of the relative positions of a
viewer 10 and a display 100. In the embodiments of FIGS. 1b, 1c,
2b, and 2c, a perpendicular distance L and a parallel distance of
the viewer 10 to the center of the display 100 can further be
measured. Next, in the parallax barrier pattern 101 (as shown in
FIG. 3a or 3b), the width of each dark strip 101a and the space
therebetween can be adjusted according to the perpendicular
distance L. Moreover, the shift of the dark strips 101a in a
perpendicular direction can be adjusted according to the parallel
distance d.
[0024] According to the 2D/3D display of the invention, since the
self-emissive display device does not require a backlight device,
power consumption can be reduced. Moreover, since the parallax
barrier pattern is provided by the self-emissive display device or
the liquid crystal display device, the 2D and/or 3D images can be
provided. Furthermore, the relative positions between the 2D and 3D
images can be randomly changed by adjusting the number, size, and
position of the parallax barrier pattern.
[0025] While the invention has been described by way of example and
in terms of preferred embodiment, it is to be understood that the
invention is not limited thereto. To the contrary, it is intended
to cover various modifications and similar arrangements (as would
be apparent to those skilled in the art). Therefore, the scope of
the appended claims should be accorded the broadest interpretation
to encompass all such modifications and similar arrangements.
* * * * *