U.S. patent application number 16/870901 was filed with the patent office on 2020-11-12 for backlight module and display device with backlight module.
The applicant listed for this patent is FOSHAN NATIONSTAR OPTOELECTRONICS CO., LTD. Invention is credited to Junhua CHEN, Danlei GONG, Fabo LIU, Yihua TAN, Zhonghai YAN.
Application Number | 20200357780 16/870901 |
Document ID | / |
Family ID | 1000005178540 |
Filed Date | 2020-11-12 |
United States Patent
Application |
20200357780 |
Kind Code |
A1 |
CHEN; Junhua ; et
al. |
November 12, 2020 |
Backlight Module and Display Device with Backlight Module
Abstract
Some embodiments of the present disclosure provide a backlight
module and a display device with the backlight module. The
backlight module includes a plurality of Light-Emitting Diode (LED)
luminous units arranged at intervals. Part of the plurality of LED
luminous units are a plurality of first luminous units A with a
first luminous peak wavelength, and the other part of the plurality
of LED luminous units are plurality of second luminous units C with
a second luminous peak wavelength, wherein the first luminous peak
wavelength being less than a preset wavelength and the second
luminous peak wavelength being greater than the preset wavelength.
The plurality of first luminous units A and the plurality of second
luminous units C are alternately arranged in sequence on the
substrate, and in any two adjacent LED luminous units, one is a
first luminous unit A and the other is a second luminous unit
C.
Inventors: |
CHEN; Junhua; (Foshan,
CN) ; LIU; Fabo; (Foshan, CN) ; GONG;
Danlei; (Foshan, CN) ; YAN; Zhonghai; (Foshan,
CN) ; TAN; Yihua; (Foshan, CN) |
|
Applicant: |
Name |
City |
State |
Country |
Type |
FOSHAN NATIONSTAR OPTOELECTRONICS CO., LTD |
Foshan |
|
CN |
|
|
Family ID: |
1000005178540 |
Appl. No.: |
16/870901 |
Filed: |
May 9, 2020 |
Current U.S.
Class: |
1/1 |
Current CPC
Class: |
H01L 25/13 20130101;
F21V 5/02 20130101; F21V 3/04 20130101; F21V 9/32 20180201; F21Y
2115/10 20160801; F21V 13/12 20130101 |
International
Class: |
H01L 25/13 20060101
H01L025/13; F21V 3/04 20060101 F21V003/04; F21V 9/32 20060101
F21V009/32; F21V 13/12 20060101 F21V013/12; F21V 5/02 20060101
F21V005/02 |
Foreign Application Data
Date |
Code |
Application Number |
May 9, 2019 |
CN |
201910385793.6 |
Claims
1. A backlight module, comprising: a substrate; and a plurality of
light-emitting diode luminous units, wherein the plurality of
light-emitting diode luminous units are arranged at intervals on
the substrate in a length direction and width direction of the
substrate; wherein part of the plurality of light-emitting diode
luminous units are a plurality of first luminous units A with a
first luminous peak wavelength, and the other part of the plurality
of light-emitting diode luminous units are a plurality of second
luminous units C with a second luminous peak wavelength, wherein
the first luminous peak wavelength is less than a preset
wavelength, the preset wavelength is a peak wavelength after light
mixing of the plurality of light-emitting diode luminous units and
the second luminous peak wavelength is greater than the preset
wavelength; and the plurality of first luminous units A and the
plurality of second luminous units C are alternately arranged in
sequence in the length direction and width direction of the
substrate, such that one of any two adjacent light-emitting diode
luminous units of the plurality of light-emitting diode luminous
units in the length direction or width direction of the substrate
is a first luminous unit A and the other of the any two adjacent
LED luminous units (20) is a second luminous unit C.
2. The backlight module as claimed in claim 1, wherein the
light-emitting diode luminous unit is an light-emitting diode
luminous device.
3. The backlight module as claimed in claim 1, wherein the first
luminous peak wavelength is in a first optional range value, and a
difference value between a maximum value and minimum value in the
first optional range value is greater than 0 nm and less than or
equal to 3 nm; the second luminous peak wavelength is in a second
optional range value, and a difference value between a maximum
value and minimum value in the second optional range value is
greater than 0 nm and less than or equal to 3 nm; and the preset
wavelength is in a third optional range value, and a difference
value between a maximum value and minimum value in the third
optional range value is greater than 0 nm and less than or equal to
3 nm.
4. The backlight module as claimed in claim 3, wherein the first
optional range value is 441 nm to 443 nm, the second optional range
value is 445 nm to 447 nm, and the third optional range value is
443 nm to 445 nm.
5. The backlight module as claimed in claim 1, wherein the
plurality of light-emitting diode luminous units are distributed on
the substrate in form of a matrix, and a center distance between
two adjacent light-emitting diode luminous units in the plurality
of light-emitting diode luminous units is more than or equal to 3
mm and less than or equal to 15 mm.
6. The backlight module as claimed in claim 1, wherein the
substrate comprises one of an FR-4 substrate, an aluminum substrate
and a Bismaleimide Triazine (BT) substrate.
7. The backlight module as claimed in claim 1, wherein the first
luminous peak wavelength is in a first alternative range value, the
second luminous peak wavelength is in a second alternative range
value, the preset wavelength is in a third alternative range value,
a maximum value in the third alternative range value is a half of a
sum of a maximum value in the first alternative range value and a
maximum value in the second alternative range value, and a minimum
value in the third alternative range value is a half of a sum of a
minimum value in the first alternative range value and a minimum
value in the second alternative range value.
8. The backlight module as claimed in claim 7, wherein a difference
value between the maximum value and minimum value in the first
alternative range value is greater than 0 nm and less than or equal
to 3 nm, a difference value between the maximum value and minimum
value in the second alternative range value is greater than 0 nm
and less than or equal to 3 nm, and a difference value between the
maximum value and minimum value in the third alternative range
value is greater than 0 nm and less than or equal to 3 nm.
9. A display device, comprising an optical module and the backlight
module as claimed in claim 1, wherein the optical module and the
backlight module are arranged at intervals, and the optical module
comprises an optical component layer, a conversion film layer and a
liquid crystal glass layer.
10. The display device as claimed in claim 9, wherein a spacing
distance between the backlight module and the optical module is
more than or equal to 2 mm and less than or equal to 12 mm.
11. The display device as claimed in claim 9, wherein the optical
component layer comprises a diffuser plate, a diffusion film and a
prism film, and the conversion film layer comprises a phosphor film
layer comprising one or more of yellow phosphor, green phosphor and
red phosphor or a quantum dot film layer.
12. The display device as claimed in claim 9, wherein the
light-emitting diode luminous unit is an light-emitting diode
luminous device.
13. The display device as claimed in claim 9, wherein the first
luminous peak wavelength is in a first optional range value, and a
difference value between a maximum value and minimum value in the
first optional range value is greater than 0 nm and less than or
equal to 3 nm; the second luminous peak wavelength is in a second
optional range value, and a difference value between a maximum
value and minimum value in the second optional range value is
greater than 0 nm and less than or equal to 3 nm; and the preset
wavelength is in a third optional range value, and a difference
value between a maximum value and minimum value in the third
optional range value is greater than 0 nm and less than or equal to
3 nm.
14. The display device as claimed in claim 13, wherein the first
optional range value is 441 nm to 443 nm, the second optional range
value is 445 nm to 447 nm, and the third optional range value is
443 nm to 445 nm.
15. The display device as claimed in claim 9, wherein the plurality
of light-emitting diode luminous units are distributed on the
substrate in form of a matrix, and a center distance between two
adjacent light-emitting diode luminous units in the plurality of
light-emitting diode luminous units is more than or equal to 3 mm
and less than or equal to 15 mm.
16. The display device as claimed in claim 9, wherein the substrate
is one of an FR-4 substrate, an aluminum substrate and a
Bismaleimide Triazine (BT) substrate.
17. The display device as claimed in claim 9, wherein the first
luminous peak wavelength is in a first alternative range value, the
second luminous peak wavelength is in a second alternative range
value, the preset wavelength is in a third alternative range value,
a maximum value in the third alternative range value is a half of a
sum of a maximum value in the first alternative range value and a
maximum value in the second alternative range value, and a minimum
value in the third alternative range value is a half of a sum of a
minimum value in the first alternative range value and a minimum
value in the second alternative range value.
18. The display device as claimed in claim 17, wherein a difference
value between the maximum value and minimum value in the first
alternative range value is greater than 0 nm and less than or equal
to 3 nm, a difference value between the maximum value and minimum
value in the second alternative range value is greater than 0 nm
and less than or equal to 3 nm, and a difference value between the
maximum value and minimum value in the third alternative range
value is greater than 0 nm and less than or equal to 3 nm.
Description
CROSS-REFERENCE TO RELATED APPLICATION(S)
[0001] The present disclosure claims priority to Chinese Patent
Application No. 201910385793.6, filed on May 9, 2019 and entitled
"Backlight Module and Display Device with Backlight Module", the
contents of which are hereby incorporated by reference in its
entirety.
TECHNICAL FIELD
[0002] The present disclosure relates to a technical field of
Light-Emitting Diode (LED) lighting technology, and particularly to
a backlight module and a display device with the backlight module.
A structure of the backlight module is mainly optimized and
improved.
BACKGROUND
[0003] LED backlight module is an indispensable key assembly of a
display device in a present mainstream display technology, and a
basic principle for white light synthesis is that a blue LED
luminous unit excites phosphor or another fluorescent material such
as a quantum dot material to generate light of another band and the
light is mixed with blue light to form white light.
[0004] An excitation wavelength of a fluorescent material and a
Liquid Crystal Display (LCD) filter have a certain requirement on a
wavelength range of blue light, so that, when an LED luminous unit
is selected, a wavelength range of blue light emitted by the LED
luminous unit is required to be accurately controlled. That is, in
the art known to inventors, when an LED luminous unit for
manufacturing an LED backlight module is selected, it is necessary
to ensure that a wavelength range of blue light emitted by the LED
luminous unit is in a preset wavelength range. A large number of
LE'D luminous units are required by manufacturing of an LED
backlight module, and if it is ensured that luminous peak
wavelengths of all the LED luminous units are in the preset
wavelength range, namely LED luminous units of a same wavelength
specification are adopted to manufacture the LED backlight module,
LED luminous units of which luminous peak wavelengths are outside
the preset wavelength range are scrapped and are not normally used.
Consequently, the effective utilization rate of the LED luminous
units is greatly reduced, which greatly increases the manufacturing
cost of the LED backlight module and disadvantage a display device
in economy and market competitiveness.
SUMMARY
[0005] Some embodiments of the present disclosure provide a
backlight module and a display device with the backlight module, to
solve the problem in the art known to inventors that the
manufacturing cost of an LED backlight module is greatly increased
and a display device is disadvantaged in economy and market
competitiveness because the effective utilization rate of LED
luminous units is excessively low when the LED backlight module is
manufactured.
[0006] Some embodiments of the disclosure are achieved by the
following solution, some embodiments of the present disclosure
provide a backlight module, which includes a substrate and a
plurality of LED luminous units, wherein the plurality of LED
luminous units are arranged at intervals on the substrate in a
length direction and width direction of the substrate; wherein part
of the plurality of LED luminous units are a plurality of first
luminous units A with a first luminous peak wavelength, and the
other part of the plurality of LED luminous units are a plurality
of second luminous units C with a second luminous peak wavelength,
wherein the first luminous peak wavelength is less than a preset
wavelength, the preset wavelength is a peak wavelength after light
mixing of the plurality of LED luminous units and the second
luminous peak wavelength is greater than the preset wavelength; and
the plurality of first luminous units A and the plurality of second
luminous units C are alternately arranged in sequence in the length
direction and width direction of the substrate such that one of any
two adjacent LED luminous units of the plurality of light-emitting
diode luminous units in the length direction or width direction of
the substrate is a first luminous unit A and the other of the any
two adjacent LED luminous units is a second luminous unit C.
[0007] In an exemplary embodiment, the LED luminous unit is an LED
luminous device.
[0008] In an exemplary embodiment, the first luminous peak
wavelength is in a first optional range value, and a difference
value between a maximum value and minimum value in the first
optional range value is greater than 0 nm and less than or equal to
3 nm; the second luminous peak wavelength is in a second optional
range value, and a difference value between a maximum value and
minimum value in the second optional range value is greater than 0
nm and less than or equal to 3 nm; and the preset wavelength is in
a third optional range value, and a difference value between a
maximum value and minimum value in the third optional range value
is greater than 0 nm and less than or equal to 3 nm.
[0009] In an exemplary embodiment, the first optional range value
is 441 nm to 443 nm, the second optional range value is 445 nm to
447 nm, and the third optional range value is 443 nm to 445 nm.
[0010] In an exemplary embodiment, the plurality of LED luminous
units are distributed on the substrate in form of a matrix, and a
center distance between two adjacent LED luminous units in the
plurality of light-emitting diode luminous units is more than or
equal to 3 mm and less than or equal to 15 mm.
[0011] In an exemplary embodiment, the substrate includes one of an
FR-4 substrate, an aluminum substrate and a Bismaleimide Triazine
(BT) substrate.
[0012] In an exemplary embodiment, the first luminous peak
wavelength is in a first alternative range value, the second
luminous peak wavelength is in a second alternative range value,
the preset wavelength is in a third alternative range value, a
maximum value in the third alternative range value is a half of a
sum of a maximum value in the first alternative range value and a
maximum value in the second alternative range value, and a minimum
value in the third alternative range value is a half of a sum of a
minimum value in the first alternative range value and a minimum
value in the second alternative range value.
[0013] In an exemplary embodiment, a difference value between the
maximum value and minimum value in the first alternative range
value is greater than 0 nm and less than or equal to 3 nm, a
difference value between the maximum value and minimum value in the
second alternative range value is greater than 0 nm and less than
or equal to 3 nm, and a difference value between the maximum value
and minimum value in the third alternative range value is greater
than 0 nm and less than or equal to 3 nm.
[0014] Some embodiments of the present disclosure provide a display
device, which includes an optical module and the above mentioned
backlight module, wherein the optical module and the backlight
module are arranged at intervals, and the optical module include an
optical component layer, a conversion film layer and a liquid
crystal glass layer.
[0015] In an exemplary embodiment, a spacing distance between the
backlight module and the optical module is more than or equal to 2
mm and less than or equal to 12 mm.
[0016] In an exemplary embodiment, the optical component layer
includes a diffuser plate, a diffusion film and a prism film, and
the conversion film layer includes a phosphor film layer including
one or more of yellow phosphor, green phosphor and red phosphor or
a quantum dot film layer.
[0017] With application of the technical solutions of some
embodiments of the present disclosure, the LED luminous units of
which peak wavelengths are outside a preset wavelength range
required by manufacturing of the backlight module are classified,
namely these LED luminous units are divided into the plurality of
first luminous units A with the first luminous peak wavelength and
the plurality of second luminous units C with the second luminous
peak wavelength, and then the plurality of first luminous units A
and the plurality of second luminous units C are reasonably
arranged, namely the plurality of first luminous units A and the
plurality of second luminous units C are alternately arranged in
sequence in the length direction and width direction of the
substrate and one of any two adjacent LED luminous units in the
length direction or width direction of the substrate is a first
luminous unit A and the other one of the any two adjacent LED
luminous units is a second luminous unit C. In such case, the first
luminous peak wavelength of the first luminous unit A is less than
the preset wavelength, and the second luminous peak wavelength of
the second luminous unit C is greater than the preset wavelength,
so that a peak wavelength after light mixing of the adjacent first
luminous unit A and second luminous unit C is in the preset
wavelength range required by manufacturing of the backlight module,
a design requirement of the backlight module is met, the
utilization rate of the LED luminous units is effectively
increased, the number of scrapped LED luminous units is reduced,
the manufacturing cost of the backlight module is further reduced,
and improvement of the economy and market competitiveness of the
display device is facilitated.
BRIEF DESCRIPTION OF THE DRAWINGS
[0018] The drawings forming a part of some embodiments of the
present application in the specification are adopted to provide a
further understanding to the present disclosure. Schematic
embodiments of the present disclosure and descriptions thereof are
adopted to explain the present disclosure and not intended to form
improper limits to the present disclosure. In the drawings:
[0019] FIG. 1 illustrates a schematic distribution diagram of a
plurality of first luminous units A and a plurality of second
luminous units C of a backlight module according to an optional
embodiment of the present disclosure;
[0020] FIG. 2 illustrates a wavelength-intensity characteristic
curve diagram including a wavelength-intensity characteristic curve
S1 of the first luminous unit A in FIG. 1, a wavelength-intensity
characteristic curve S2 of the second luminous unit C in FIG. 1 and
a synthetic wavelength-intensity characteristic curve S of the
first luminous unit A and the second luminous unit C; and
[0021] FIG. 3 illustrates a partial structure diagram of a display
device with the backlight module in FIG. 1 according to an optional
embodiment of the present disclosure.
[0022] Herein, the drawings include the following reference
signs:
[0023] 1, backlight module; 10, substrate; 20, LED luminous unit;
21, first luminous unit A; 22, second luminous unit C; 2, optical
module; 201, optical component layer; 202, conversion film layer;
and 203, liquid crystal glass layer.
DETAILED DESCRIPTION OF THE EMBODIMENTS
[0024] The technical solutions in embodiments of the present
disclosure will be clearly and completely described below in
combination with the drawings in the embodiments of the present
disclosure. It is apparent that the described embodiments are only
part of the embodiments of the present disclosure but not all of
the embodiments. The following description of at least one
exemplary embodiment is only illustrative actually, and is not used
as any limitation for the present disclosure and the present
application or use thereof. All other embodiments obtained by those
of ordinary skill in the art based on the embodiments in the
present disclosure without creative work shall fall within the
scope of protection of the present disclosure.
[0025] For solving the problem in the art known to inventors that
the manufacturing cost of an LED backlight module is greatly
increased and a display device is disadvantaged in economy and
market competitiveness because the effective utilization rate of
LED luminous units is excessively low when the LED backlight module
is manufactured, Some embodiments of the present disclosure provide
a backlight module and a display device with the backlight module.
As shown in FIG. 3, the display device includes a backlight module
1 and optical module 2 that are arranged at intervals. The
backlight module 1 is the abovementioned and undermentioned
backlight module, and the optical module 2 includes an optical
component layer 201, a conversion film layer 202 and a liquid
crystal glass layer 203.
[0026] As shown in FIG. 1, the backlight module 1 includes a
substrate 10 and a plurality of LED luminous unit 20, wherein the
plurality of LED luminous units 20 are arranged at intervals on the
substrate 10 in a length direction and width direction of the
substrate 10. Part of the plurality of LED luminous units 20 are a
plurality of first luminous units A 21 with a first luminous peak
wavelength, and the other part of the plurality of LED luminous
units 20 are a plurality of second luminous units C 22 with a
second luminous peak wavelength, the first luminous peak wavelength
is less than a preset wavelength, the preset wavelength is a peak
wavelength after light mixing of the plurality of LED luminous
units 20 and the second luminous peak wavelength is greater than
the preset wavelength. The plurality of first luminous units A 21
and the plurality of second luminous units C 22 are alternately
arranged in sequence in the length direction and width direction of
the substrate 10 such that one of any two adjacent LED luminous
units 20 of the plurality of light-emitting diode luminous units in
the length direction or width direction of the substrate 10 is a
first luminous unit A 21 and the other of the any two adjacent LED
luminous units 20 is a second luminous unit C 22.
[0027] The LED luminous units 20 of which peak wavelengths are
outside a preset wavelength range required by manufacturing of the
backlight module 1 are classified, namely these LED luminous units
20 are divided into the plurality of first luminous units A 21 with
the first luminous peak wavelength and the plurality of second
luminous units C 22 with the second luminous peak wavelength, and
then the plurality of first luminous units A 21 and the plurality
of second luminous units C 22 are reasonably arranged, namely the
plurality of first luminous units A 21 and the plurality of second
luminous units C 22 are alternately arranged in sequence in the
length direction and width direction of the substrate 10 and one of
any two adjacent LED luminous units 20 in the length direction or
width direction of the substrate 10 is a first luminous unit A 21
and the other one of the any two adjacent LED luminous units 20 is
a second luminous unit C 22. In such case, the first luminous peak
wavelength of the first luminous unit A 21 is less than the preset
wavelength, and the second luminous peak wavelength of the second
luminous unit C 22 is greater than the preset wavelength, so that a
peak wavelength after light mixing of the adjacent first luminous
unit A 21 and second luminous unit C 22 is in the preset wavelength
range required by manufacturing of the backlight module 1, a design
requirement of the backlight module 1 is met, the utilization rate
of the LED luminous units 20 is effectively increased, the number
of scrapped LED luminous units 20 is reduced, the manufacturing
cost of the backlight module 1 is further reduced, and improvement
of the economy and market competitiveness of the display device is
facilitated.
[0028] It is to be supplemented that, when the backlight module 1
is manufactured, the plurality of LED luminous units 20 are
arranged on the substrate 10, the plurality of LED luminous units
20 include the plurality of first luminous units A 21 and the
plurality of second luminous units C 22, but luminous units
disposed on the substrate 10 are not limited to the two types, in
some embodiments of the present disclosure, standard luminous units
of which peak wavelengths are the preset wavelength are disposed.
The backlight module 1 in this structural form also falls within
the scope of protection of the present application.
[0029] As shown in FIG. 2, FIG. 2 illustrates a
wavelength-intensity characteristic curve diagram including a
wavelength-intensity characteristic curve S1 of the first luminous
unit A in FIG. 1, a wavelength-intensity characteristic curve S2 of
the second luminous unit C in FIG. 1 and a synthetic
wavelength-intensity characteristic curve S compounded with the
first luminous unit A and the second luminous unit C. It can be
seen that the synthetic wavelength-intensity characteristic curve S
compounded with the first luminous unit A and the second luminous
unit C is obviously better than the wavelength-intensity
characteristic curve S1 of the first luminous unit A and the
wavelength-intensity characteristic curve S2 of the second luminous
unit C, so that the wavelength-intensity characteristic curve S is
more reasonable and meets a manufacturing requirement of the
backlight module 1.
[0030] In some embodiments, the LED luminous unit 20 is an LED
luminous device or an LED luminous chip. The LED luminous device
includes a bracket, an LED chip in the bracket and an encapsulating
colloid covering the LED chip. In an embodiment of the present
application, the LED luminous device includes an LED chip and an
encapsulating colloid covering the LED chip.
[0031] In some embodiments, the LED luminous unit 20 is a blue LED
luminous device or a blue LED luminous chip. The LED luminous
device has high luminous performance and is used more extensively.
For a backlight module 1 manufactured by the blue LED luminous
units, the product is protected more pertinently.
[0032] In an optional embodiment of the present disclosure, the
first luminous peak wavelength is in a first optional range value,
and a difference value between a maximum value and minimum value in
the first optional range value is greater than 0 nm and less than
or equal to 3 nm; the second luminous peak wavelength is in a
second optional range value, and a difference value between a
maximum value and minimum value in the second optional range value
is greater than 0 nm and less than or equal to 3 nm; and the preset
wavelength is in a third optional range value, and a difference
value between a maximum value and minimum value in the third
optional range value is greater than 0 nm and less than or equal to
3 nm. This is more favorable for reasonably utilizing the LED
luminous units 20 of which the peak wavelengths are greatly
deviates from the preset wavelength, reducing the manufacturing
cost of the backlight module 1 and improving the economic
performance of the display device.
[0033] In some embodiments, the first optional range value is 441
nm to 443 nm, the second optional range value is 445 nm to 447 nm,
and the third optional range value is 443 nm to 445 nm.
[0034] As shown in FIG. 1, the plurality of LED luminous units 20
are distributed on the substrate 10 in form of a matrix, and a
center distance between two adjacent LED luminous units 20 in the
plurality of light-emitting diode luminous units is more than or
equal to 3 mm and less than or equal to 15 mm. A range of a Pitch
value between the plurality of LED luminous units 20 is optimized,
so that the luminous performance of the backlight module 1 is
controlled more accurately to improve a picture display effect of
the display device.
[0035] For adaptation to manufacturing of different display devices
to improve the practicability of the backlight module 1, in some
embodiments, the substrate 10 includes one of an FR-4 substrate, an
aluminum substrate and a Bismaleimide Triazine (BT) substrate.
[0036] The present application also provides an optional
embodiment. The first luminous peak wavelength is in a first
alternative range value, the second luminous peak wavelength is in
a second alternative range value, the preset wavelength is in a
third alternative range value, a maximum value in the third
alternative range value is a half of a sum of a maximum value in
the first alternative range value and a maximum value in the second
alternative range value, and a minimum value in the third
alternative range value is a half of a sum of a minimum value in
the first alternative range value and a minimum value in the second
alternative range value.
[0037] In some embodiments, a difference value between the maximum
value and minimum value in the first alternative range value is
greater than 0 nm and less than or equal to 3 nm, a difference
value between the maximum value and minimum value in the second
alternative range value is greater than 0 nm and less than or equal
to 3 nm, and a difference value between the maximum value and
minimum value in the third alternative range value is greater than
0 nm and less than or equal to 3 nm.
[0038] In some embodiments, the preset wavelength is a half of a
sum of the first luminous peak wavelength and the second luminous
peak wavelength.
[0039] As shown in FIG. 3, a spacing distance between the backlight
module 1 and the optical module 2 is more than or equal to 2 mm and
less than or equal to 12 mm. An Optical Distance (OD) value of the
display device is optimized, so that improvement of the luminous
performance of the backlight module 1 is facilitated, and the
display performance of the display device is further improved.
[0040] As shown in FIG. 3, the optical component layer 201 includes
a diffuser plate, a diffusion film and a prism film, and the
conversion film layer 202 is a phosphor film layer including one or
more of yellow phosphor, green phosphor and red phosphor or a
quantum dot film layer.
[0041] The above are only some embodiments of the present
disclosure and not intended to limit the present disclosure. For
those skilled in the art, the present disclosure has various
modifications and variations. Any modifications, equivalent
replacements, improvements and the like made within the spirit and
principle of the present disclosure shall fall within the scope of
protection of the present disclosure.
* * * * *