CN102410471A - Backlight module and display device - Google Patents
Backlight module and display device Download PDFInfo
- Publication number
- CN102410471A CN102410471A CN2011102224179A CN201110222417A CN102410471A CN 102410471 A CN102410471 A CN 102410471A CN 2011102224179 A CN2011102224179 A CN 2011102224179A CN 201110222417 A CN201110222417 A CN 201110222417A CN 102410471 A CN102410471 A CN 102410471A
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- Prior art keywords
- reflector plate
- backlight module
- framework
- opening
- module according
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Links
- 239000002390 adhesive tape Substances 0.000 claims description 11
- 239000000463 material Substances 0.000 claims description 7
- 230000009977 dual effect Effects 0.000 claims description 2
- 208000034699 Vitreous floaters Diseases 0.000 description 6
- 230000005540 biological transmission Effects 0.000 description 4
- 239000004973 liquid crystal related substance Substances 0.000 description 4
- -1 Polyethylene terephthalate Polymers 0.000 description 3
- 239000004743 Polypropylene Substances 0.000 description 3
- LLLVZDVNHNWSDS-UHFFFAOYSA-N 4-methylidene-3,5-dioxabicyclo[5.2.2]undeca-1(9),7,10-triene-2,6-dione Chemical compound C1(C2=CC=C(C(=O)OC(=C)O1)C=C2)=O LLLVZDVNHNWSDS-UHFFFAOYSA-N 0.000 description 2
- 229920000139 polyethylene terephthalate Polymers 0.000 description 2
- 239000005020 polyethylene terephthalate Substances 0.000 description 2
- 229920001155 polypropylene Polymers 0.000 description 2
- 230000007423 decrease Effects 0.000 description 1
- 238000004020 luminiscence type Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- NHDHVHZZCFYRSB-UHFFFAOYSA-N pyriproxyfen Chemical compound C=1C=CC=NC=1OC(C)COC(C=C1)=CC=C1OC1=CC=CC=C1 NHDHVHZZCFYRSB-UHFFFAOYSA-N 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
Images
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- Planar Illumination Modules (AREA)
- Liquid Crystal (AREA)
Abstract
A backlight module comprises a frame body, a first reflector plate and a second reflector plate. The frame body is provided with an opening, the first reflector plate is arranged on the frame body and completely covers the opening, and the second reflector plate is arranged below the first reflector plate. Therefore, the weight of the backlight module can be reduced, and the light-emitting brightness of the backlight module can be improved.
Description
[technical field]
The invention relates to a kind of backlight module and display unit.
[background technology]
Along with electronic product develops towards compact direction; Liquid crystal indicator is owing to possess frivolous and advantage power saving; And by number of applications in mobile computer, personal digital aid (PDA) (Personal Digital Assistant, PDA), in the various electronic products such as digital camera, Video Camera, mobile phone, handheld game device.
Because the display panels of liquid crystal indicator is not had a characteristics of luminescence, therefore, liquid crystal indicator need comprise an area source, and for example: backlight module, light gives the liquid crystal indicator panel to provide adequately and uniformly.According to the configuration of the diverse location of backlight, backlight module can be divided into side direction type backlight module and direct type backlight module.The side direction type backlight module comprises a LGP, a reflector plate, a light source and a framework, and LGP is disposed at the reflector plate top, and light source is disposed at a side of LGP, and LGP, reflector plate and light source are arranged in framework.
Yet in order to develop towards compact direction in response to electronic product, framework can have an opening, makes the weight saving of side direction type backlight module.Though the side direction type backlight module can have the weight that opening reduces the side direction type backlight module through framework; But because reflector plate is not in fact that all light that are incident in reflector plate are reflected fully; The feasible light that is not reflected the sheet reflection leaves the side direction type backlight module from the opening of framework, and the light that causes light source to send can't be by the effective problem of utilizing of side direction type backlight module.
[summary of the invention]
The present invention provides a kind of backlight module and display unit, uses the existing problem of prior art that solves.
According to an embodiment of the backlight module that the present invention disclosed, backlight module comprises a framework, one first reflector plate and one second reflector plate.Wherein, framework has an opening, and first reflector plate is arranged on the framework and covers opening fully, and second reflector plate is arranged under first reflector plate.
According to an embodiment of the display unit that the present invention disclosed, display unit comprises a display floater and a backlight module.Wherein, display floater has a visible area, and backlight module comprises a framework, one first reflector plate and one second reflector plate, and framework has an opening.The corresponding visible area setting of opening, first reflector plate is arranged on the framework and covers opening fully, and second reflector plate is arranged under first reflector plate.
According to backlight module and the display unit that the present invention disclosed, can alleviate the weight of backlight module through the design of opening.Can promote the utilization rate of light through the design of second reflector plate, and then promote brightness of backlight module.
More than about the explanation of description of contents of the present invention and following embodiment in order to demonstration and explain spirit of the present invention and principle, and patent claim of the present invention explanation further is provided.
[description of drawings]
Fig. 1 is the perspective view according to first embodiment of the display unit that the present invention disclosed.
Fig. 2 is the cross-sectional view according to first embodiment of the display unit that the present invention disclosed.
Fig. 3 is the cross-sectional view according to second embodiment of the display unit that the present invention disclosed.
Fig. 4 is the cross-sectional view according to the 3rd embodiment of the display unit that the present invention disclosed.
Fig. 5 is the cross-sectional view according to the 4th embodiment of the display unit that the present invention disclosed.
Fig. 6 is the cross-sectional view according to the 5th embodiment of the display unit that the present invention disclosed.
Fig. 7 is the cross-sectional view according to the 6th embodiment of the display unit that the present invention disclosed.
Fig. 8 is the cross-sectional view according to the 7th embodiment of the display unit that the present invention disclosed.
Fig. 9 is the cross-sectional view according to the 8th embodiment of the display unit that the present invention disclosed.
[primary clustering symbol description]
20 adhesive tapes
25 outer surfaces
26 side surfaces
27 breach
30 adhesion layers
40 first supporting parts
42 second supporting parts
44 grooves
50 display floaters
52 visible areas
60 backlight modules
62 frameworks
64 first reflector plates
66 second reflector plates
68 openings
70 light sources
72 LGPs
74 incidence surfaces
76 transmission planes
78 exiting surfaces
90 the 3rd reflector plates
100 display unit
[specific embodiment]
Please, be respectively solid and the cross-sectional view of first embodiment of the display unit that discloses according to the present invention with reference to " Fig. 1 " and " Fig. 2 ".Display unit 100 comprises display floater 50 and backlight module 60.Display floater 50 has visible area 52, and wherein visible area 52 is the zone of display unit 100 in order to display frame.Backlight module 60 comprises framework 62, first reflector plate 64 and second reflector plate 66.In the present embodiment; Backlight module 60 can be the side direction type backlight module; The material of framework 62 can be but is not limited to metal; First reflector plate 64 can have identical material with second reflector plate 66, all can be such as but not limited to first reflector plate 64 and second reflector plate 66 but be not limited to reflector plate model code name E6SR188, but present embodiment is not in order to limit the present invention.In other words; The material of framework 62 can be but is not limited to plastics; First reflector plate 64 can have different materials with second reflector plate 66; Can be such as but not limited to first reflector plate 64 but be not limited to reflector plate model code name E6Z, second reflector plate 66 can be but is not limited to reflector plate model code name UX188, can adjust according to actual demand.
Wherein, backlight module 60 comprises light source 70 and LGP 72 in addition, and LGP 72 comprises incidence surface 74, transmission plane 76 and exiting surface 78, and light source 70 is disposed at incidence surface 74, the first reflector plates 64 and is disposed at transmission plane 76, and display floater 50 is disposed at exiting surface 78.Wherein, Light source 70 can be but is not limited to light emitting diode (Light-Emitting Diode; LED), the quantity of light source 70 can be but is not limited to ten (because " Fig. 2 " is the cross-sectional view of display unit 100, so only draw out a light emitting diode in graphic).That is to say that light source 70 also can be cold cathode fluorescent tube, the quantity of light source 70 also can be two and can adjust according to actual demand.
In the present embodiment, framework 62 has opening 68, and opening 68 corresponding visible areas 52 are provided with.First reflector plate 64 is arranged on the framework 62 and covers opening 68, the second reflector plates 66 fully and is arranged under first reflector plate 64.Wherein, backlight module 60 more comprises adhesive tape 20, and adhesive tape 20 and is provided with the edge of second reflector plate 66 between first reflector plate 64 and second reflector plate 66.In addition, in the present embodiment, the area of opening 68 can equal the area of opening 68 greater than the area of the area of visible area 52 and second reflector plate 66, but present embodiment is not in order to limit the present invention.That is to say that the area of opening 68 also can be equal to or less than the area of visible area 52, the area of second reflector plate 66 also can be less than or equal to the area of opening 68.Be noted that; When opening 68 areas are disposed on first reflecting surface 64 and the visible area 52 corresponding areas less than the area of visible area 52 or adhesive tape 20; Because of part light can't be penetrated from exiting surface 78 by the reflection of second reflector plate 66, and then reduce the light utilization rate of backlight module 60 and influence the outgoing light homogeneity of backlight module 60.
In the present embodiment, behind the light that light source 70 is sent (not drawing) the incident LGP 72, the light of a part is penetrated from exiting surface 78 by LGP 72 guiding.Another part light penetration transmission plane 76 to first reflector plates 64, the first reflector plates 64 are incident in the light reflection of first reflector plate 64 with major part and penetrate LGP 72 and penetrate from exiting surface 78.Second reflector plate 66 will and penetrate first reflector plate 64 not by the light reflection of first reflector plate, 64 reflections and penetrate from exiting surface 78 with LGP 72.Therefore, backlight module 60 can be through the configuration of second reflector plate 66, the light that uses light source 70 to be sent effectively, and then promote brightness.
Below be directed against experimentizing of above-mentioned first embodiment.Please with reference to " table 2 ", for backlight module 60 comprise with do not comprise second reflector plate 66 respectively at measure 5 with ten three average emitting brightness and relative brightness percentage.Wherein, emitting brightness is the luminous intensity of unit are, and unit is nit (nit); Relative brightness percentage system does not comprise that with backlight module 60 emitting brightness of second reflector plate 66 is the relative brightness of benchmark.
Table 2
Do not comprise second reflector plate | Comprise second reflector plate | |
5 average emitting brightness | 4934.90 | 5173.33 |
Ten triadic mean emitting brightness | 4668.33 | 4815.10 |
|
100% | 104.83% |
Can know that from " table 2 " no matter measure or emitting brightness at 5 at ten three, backlight module 60 comprises that the average emitting brightness of second reflector plate 66 does not comprise the average emitting brightness of second reflector plate 66 greater than backlight module 60.Wherein, Backlight module 60 has or not the relative brightness percentage that comprises second reflector plate 66 to differ rough near 5 percent; Therefore; Under identical emitting brightness was considered, backlight module 60 can (for example: the luminous grade decline one-level of light emitting diode) or reduce the quantity (for example: the quantity that reduces light emitting diode is also adjusted the distance between adjacent two light emitting diodes) of light source 70 change light source 70 into luminous efficiency low light source.
Please with reference to " Fig. 3 ", be cross-sectional view according to second embodiment of the display unit that the present invention disclosed.In the present embodiment, backlight module 60 is except comprising light source 70, LGP 72, have framework 62, first reflector plate 64 and second reflector plate 66 of opening 68 that backlight module 66 more comprises adhesion layer 30.Adhesion layer 30 and covers the surface of second reflector plate 66 in the face of first reflector plate 64 between first reflector plate 64 and second reflector plate 66.In the present embodiment, adhesion layer 30 can be covered in the surface of whole second reflector plates 66 in the face of first reflector plate 64, but present embodiment is not in order to limit the present invention.That is to say that adhesion layer 30 also can be covered in the surface of part second reflector plate 66 in the face of first reflector plate 64, can adjust according to actual demand.Wherein, The material of first reflector plate 64 and second reflector plate 66 can be but is not limited to ethylene terephthalate (Polyethylene terephthalate; PET) or polypropylene (Polypropylene, PP), the refractive index of adhesion layer 30 can equal the refractive index of second reflector plate 66.Because the refractive index of ethylene terephthalate can be 1.57 in fact; Polyacrylic refractive index can be 1.49 in fact; Make the material of adhesion layer 30 can be but be not limited to the high index of refraction oligomer (oligomer) of Shantaishi Co., Ltd's goods RD160 by name or RD161; Wherein the refractive index of RD160 can be 1.60 in fact, and the refractive index of RD161 can be 1.61 in fact, can adjust according to actual demand.When the refractive index of adhesion layer 30 can equal the refractive index of second reflector plate 66, can reduce the loss that light is caused between first reflector plate 64 and second reflector plate 66.
Please with reference to " Fig. 4 ", be cross-sectional view according to the 3rd embodiment of the display unit that the present invention disclosed.In the present embodiment, backlight module 60 comprises light source 70, LGP 72, has framework 62, first reflector plate 64 and second reflector plate 66 of opening 68, and framework 62 more comprises first supporting part 40 and second supporting part 42.First supporting part 40 is in order to carry first reflector plate, 64, the second supporting parts 42 in order to carry second reflector plate 66.Wherein, first reflector plate 64 and second reflector plate 66 can utilize adhesive tape to be fixed in (being air between first reflector plate 64 and second reflector plate 66) on first supporting part 40 and second supporting part 42 respectively, but present embodiment is not in order to limit the present invention.That is to say; First reflector plate, 64 modes of pasting capable of using are fixed on first supporting part 40; The adhesion layer 30 of second reflector plate, 66 second embodiment capable of using is fixed between first reflector plate 64 and second supporting part 42 (please with reference to " Fig. 5 ", being the cross-sectional view according to the 4th embodiment of the display unit that the present invention disclosed).Wherein, the refractive index of adhesion layer 30 can equal the refractive index of second reflector plate 66.
Please with reference to " Fig. 6 ", be cross-sectional view according to the 5th embodiment of the display unit that the present invention disclosed.In the present embodiment; Backlight module 60 comprises light source 70, LGP 72, has framework 62, first reflector plate 64 and second reflector plate 66 of opening 68; The relative dual side-edge that framework 62 more comprises first supporting part, 40, the first supporting parts 40 comprises but is not limited to two grooves 44.First supporting part 40 is located between two grooves 44 in order to the edge clamping of carrying first reflector plate, 64, the second reflector plates 66.Wherein, first reflector plate 64 utilizes the fixed structure (not drawing) of adhesive tape 20 or framework 62 to be fixed on first supporting part 40.Second reflector plate 66 can through but the mode that is not limited to paste second reflector plate 66 is fixed in two grooves 44.
Please with reference to " Fig. 7 ", be cross-sectional view according to the 6th embodiment of the display unit that the present invention disclosed.In the present embodiment; Backlight module 60 is except comprising light source 70, LGP 72, having framework 62, first reflector plate 64 and second reflector plate 66 of opening 68; Backlight module 66 more comprises the 3rd reflector plate 90, the three reflector plates 90 in order to connect first reflector plate 64 and second reflector plate 66.In addition, framework 62 comprises outer surface 25 and side surface 26, and side surface 26 has breach 27, the three reflector plates 90 and passes breach 27 and covered section side surface 26 and part outer surface 25, to connect first reflector plate 64 and second reflector plate 66.Wherein, First reflector plate 64 utilizes the fixed structure (not drawing) of adhesive tape 20 or framework 62 to be fixed on the framework 62; Second reflector plate, 66 adhesion layers 30 capable of using are attached at first reflector plate 64; The refractive index of adhesion layer 30 can equal the refractive index of second reflector plate 66, but present embodiment is not in order to limit the present invention.That is to say; First reflector plate 64, second reflector plate 66 and the 3rd reflector plate 90 adhesive tape 20 all capable of using are fixed on the framework 62; Making wins has air between the reflector plate 64 and second reflector plate 66 (please with reference to " Fig. 8 ", being the cross-sectional view according to the 7th embodiment of the display unit that the present invention disclosed).
Please with reference to " Fig. 9 ", be cross-sectional view according to the 8th embodiment of the display unit that the present invention disclosed.In the present embodiment, backlight module 60 comprise light source 70, LGP 72, have the framework 62, first reflector plate 64, second reflector plate 66 of opening 68 with in order to be connected the 3rd reflector plate 90 of first reflector plate 64 and second reflector plate 66.In addition, framework 62 comprises side surface 26, and side surface 26 has two breach 27.The 3rd reflector plate 90 passes a wherein breach 27, with covered section side surface 26, and by another breach 27 reflexeds to framework 62.Wherein, Second reflector plate, 66 adhesion layers 30 capable of using are attached at first reflector plate 64; And utilize fixing first reflector plate 64 of fixed structure (not drawing) and second reflector plate 66 of adhesive tape 20 or framework 62, the refractive index of adhesion layer 30 can equal the refractive index of second reflector plate 66.
Among above-mentioned the 6th embodiment to the eight embodiment, first reflector plate 64, second reflector plate 66 and the 3rd reflector plate 90 of backlight module 66 is three reflector plates independently, but these embodiment are not in order to limit the present invention.That is to say that included first reflector plate 64, second reflector plate 66 and the 3rd reflector plate 90 of backlight module 66 can be integrated into a reflector plate, can adjust according to actual demand.
According to backlight module and the display unit that the present invention disclosed, can alleviate the weight of backlight module through the design of opening.Can promote the utilization rate of light through the design of second reflector plate, and then promote brightness of backlight module.
Though the present invention discloses as above with aforesaid preferred embodiment; Right its is not in order to limit the present invention; Anyly have the knack of alike art; Do not breaking away from the spirit and scope of the present invention, when can doing a little change and retouching, therefore scope of patent protection of the present invention must be looked the appended claim person of defining of this specification and is as the criterion.
Claims (13)
1. backlight module comprises:
One framework has an opening;
One first reflector plate is arranged at and also covers this opening on this framework fully; And
One second reflector plate is arranged under this first reflector plate.
2. backlight module according to claim 1 is characterized in that this backlight module more comprises an adhesive tape, and this adhesive tape and is provided with the edge of this second reflector plate between this first reflector plate and second reflector plate.
3. backlight module according to claim 1; It is characterized in that; This backlight module more comprises an adhesion layer; This adhesion layer is between between this first reflector plate and second reflector plate, and covers the surface of this second reflector plate in the face of this first reflector plate, and wherein the refractive index of this adhesion layer equals this second reflector plate refractive index.
4. backlight module according to claim 1 is characterized in that, this framework comprises one first supporting part, in order to carry this first reflector plate.
5. backlight module according to claim 4 is characterized in that, this framework more comprises one second supporting part, in order to carry this second reflector plate.
6. backlight module according to claim 4 is characterized in that, the relative dual side-edge of this first supporting part comprises a plurality of grooves, and the edge clamping of this second reflector plate is located between those grooves.
7. backlight module according to claim 1 is characterized in that, this backlight module more comprises one the 3rd reflector plate, in order to connect this first reflector plate and this second reflector plate.
8. backlight module according to claim 7 is characterized in that, this framework comprises an outer surface and a side surface, and this side surface has a breach, and the 3rd reflector plate passes this breach and this side surface of covered section and this outer surface of part.
9. backlight module according to claim 7 is characterized in that this framework comprises a side surface; This side surface has two breach; The 3rd reflector plate passes a wherein breach of this two breach, with this side surface of covered section, and by another breach reflexed of this two breach to this framework.
10. backlight module according to claim 1 is characterized in that, this first reflector plate has identical material with this second reflector plate.
11. backlight module according to claim 1 is characterized in that, the area of this second reflector plate is less than or equal to this aperture area.
12. a display unit comprises:
One display floater has a visible area; And
One backlight module comprises:
One framework has an opening, and this opening is to should the visible area setting;
One first reflector plate is arranged at and also covers this opening on this framework fully; And
One second reflector plate is arranged under this first reflector plate.
13. display unit according to claim 12 is characterized in that, the area of this opening is more than or equal to the area of this visible area.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
TW100119292A TWI444722B (en) | 2011-06-01 | 2011-06-01 | Back light module and display device |
TW100119292 | 2011-06-01 |
Publications (2)
Publication Number | Publication Date |
---|---|
CN102410471A true CN102410471A (en) | 2012-04-11 |
CN102410471B CN102410471B (en) | 2013-08-07 |
Family
ID=45912698
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN 201110222417 Expired - Fee Related CN102410471B (en) | 2011-06-01 | 2011-07-27 | Backlight module and display device |
Country Status (2)
Country | Link |
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CN (1) | CN102410471B (en) |
TW (1) | TWI444722B (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN107340563A (en) * | 2017-08-29 | 2017-11-10 | 友达光电(厦门)有限公司 | Backlight module |
CN108121070A (en) * | 2016-11-28 | 2018-06-05 | 创王光电股份有限公司 | Head-mounted display device |
CN114724468A (en) * | 2021-01-04 | 2022-07-08 | 群创光电股份有限公司 | Display device |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
TWI598666B (en) | 2014-08-26 | 2017-09-11 | 揚昇照明股份有限公司 | Display |
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US7131763B2 (en) * | 2004-05-18 | 2006-11-07 | Au Optronics Corp. | Display |
CN101122705A (en) * | 2006-08-07 | 2008-02-13 | 三星电子株式会社 | Backlight unit and liquid crystal display having the same |
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CN102032511A (en) * | 2010-10-13 | 2011-04-27 | 友达光电股份有限公司 | Backlight module and liquid crystal display module |
CN102042536A (en) * | 2010-08-31 | 2011-05-04 | 苏州佳世达电通有限公司 | Backlight module and display device |
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2011
- 2011-06-01 TW TW100119292A patent/TWI444722B/en not_active IP Right Cessation
- 2011-07-27 CN CN 201110222417 patent/CN102410471B/en not_active Expired - Fee Related
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US20040189889A1 (en) * | 2003-03-31 | 2004-09-30 | Fujitsu Display Technologies Corporation | Liquid crystal display device with reinforced side |
CN1591132A (en) * | 2003-07-07 | 2005-03-09 | 三星电子株式会社 | Backlight assembly for dispay |
US7131763B2 (en) * | 2004-05-18 | 2006-11-07 | Au Optronics Corp. | Display |
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JP2009175328A (en) * | 2008-01-23 | 2009-08-06 | Dic Corp | Light shielding reflective tape and lcd module |
CN101782699A (en) * | 2009-01-21 | 2010-07-21 | 瀚宇彩晶股份有限公司 | Display device with composite backlight module |
CN101994950A (en) * | 2009-08-10 | 2011-03-30 | 友达光电股份有限公司 | Backlight module |
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Publication number | Priority date | Publication date | Assignee | Title |
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CN108121070A (en) * | 2016-11-28 | 2018-06-05 | 创王光电股份有限公司 | Head-mounted display device |
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CN107340563B (en) * | 2017-08-29 | 2019-10-25 | 友达光电(厦门)有限公司 | Backlight module |
CN114724468A (en) * | 2021-01-04 | 2022-07-08 | 群创光电股份有限公司 | Display device |
Also Published As
Publication number | Publication date |
---|---|
CN102410471B (en) | 2013-08-07 |
TWI444722B (en) | 2014-07-11 |
TW201250345A (en) | 2012-12-16 |
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