CN103234160B - Backlight module with shading module and display device using the same - Google Patents
Backlight module with shading module and display device using the same Download PDFInfo
- Publication number
- CN103234160B CN103234160B CN201310179531.7A CN201310179531A CN103234160B CN 103234160 B CN103234160 B CN 103234160B CN 201310179531 A CN201310179531 A CN 201310179531A CN 103234160 B CN103234160 B CN 103234160B
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- Prior art keywords
- module
- light
- reflective substrate
- light source
- substrate
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- 239000000758 substrate Substances 0.000 claims abstract description 80
- 230000003287 optical effect Effects 0.000 claims description 20
- 230000004308 accommodation Effects 0.000 claims description 5
- 239000004973 liquid crystal related substance Substances 0.000 description 9
- 238000010586 diagram Methods 0.000 description 6
- 239000000463 material Substances 0.000 description 4
- 238000006073 displacement reaction Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000007598 dipping method Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000006260 foam Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 238000012216 screening Methods 0.000 description 1
Abstract
The invention provides a backlight module and a display device using the same. The backlight module comprises a light guide plate, a light source module and a shading module. The light guide plate is provided with an adjacent light incident surface and an adjacent light emergent surface. The light source module is arranged corresponding to the light incident surface, and a gap is formed between the light source module and the light incident surface. The shading module comprises a shading substrate and a first reflection substrate, wherein the shading substrate is arranged on the light source module and extends to cover the light-emitting surface, and the first reflection substrate is arranged on the bottom surface of the shading substrate and is positioned on the gap. The display device comprises the backlight module, the panel module, the supporting frame and the rear shell.
Description
[technical field]
The invention relates to a kind of backlight module and use the display device of this backlight module.
[background technology]
Liquid crystal indicator (LiquidCrystalDisplay) has become the main flow of all kinds of display device in recent years.The TV of such as family expenses, PC, kneetop computer, monitor, mobile phone and digital camera etc., be a large amount of product using liquid crystal indicator.The backlight module (BacklightModule) being wherein applied to liquid crystal indicator for the light source supplying enough brightness and be evenly distributed, to make liquid crystal indicator can normal show image.
Available liquid crystal display device 90 as shown in Figure 1, comprises panel module 80, backlight module 10, carriage 50 and back cover 70.Wherein, backlight module 10 comprises light guide plate 20, optical diaphragm group 30, light source 40 and reflector plate 41, and what it adopted is side light type back light module, that is adopts the mode of light guide plate 20 side incident end 22 light inlet, has the advantage that thickness is thin.But, as shown in Figure 1, the light 91 that the light source 40 of backlight module 10 sends, the light of total reflection can not be produced at exiting surface 24 because incidence angle θ is less than the angle of total reflection, so can be penetrated near one end of light inputting end 22 by light guide plate 20, and when locating cushion block 53,54 displacement of light guide plate 20 or optical diaphragm group 30, light 91 spills from the gap (not shown) between light guide plate 20 and cushion block 53 or between optical diaphragm group and cushion block 54, or directly reflect via optical diaphragm group 30, thus produce light leakage phenomena.On the other hand, owing to there is clearance G between light source 40 and light inputting end 22, thus light 92 also likely thus gap spill.The space that above backlight module and liquid crystal indicator are improved.
[summary of the invention]
Fundamental purpose of the present invention, for providing a kind of backlight module and comprising its display device, can reduce the situation of light leak.
Another object of the present invention, for providing a kind of backlight module and comprising its display device, has less border width.
The present invention is to provide a kind of backlight module, comprises light guide plate, light source module and antiglare module.Light guide plate has adjacent incidence surface and exiting surface, and light source module corresponds to incidence surface and arranges, and and has gap between incidence surface.Antiglare module comprises light-shielding substrate and the first reflective substrate, and wherein light-shielding substrate is arranged on light source module, and extension is covered to exiting surface, and the first reflective substrate is arranged at the bottom surface of light-shielding substrate, and is positioned on gap.The area of the first reflective substrate is not less than the area in gap.Backlight module comprises optical diaphragm group further and is arranged on exiting surface, and is adjacent to antiglare module, forms the aspect be arranged in light guide plate that continues.
First reflective substrate more extends to covering light source module.Antiglare module comprises the bottom surface that glue-line is arranged at light-shielding substrate, and is adjacent to the first reflective substrate, and between exiting surface and light-shielding substrate.Antiglare module also comprises under the second reflective substrate is arranged at light source module, and is positioned at the projected position of the first reflective substrate, and extends to below gap.
Display device comprises backlight module, panel module, carriage and back cover.Panel module is arranged in light guide plate.Carriage, around panel module, comprises flange and is positioned at antiglare module in contrast to second of first surface.Back cover and carriage form accommodation space jointly with accommodating backlight module and panel module.Carriage comprises cushion block further and is located between flange and second, and a cushion block part is arranged in light guide plate indirectly across antiglare module, and another part is then arranged in the first reflective substrate indirectly across antiglare module.Carriage comprises cushion block further and is located between flange and optical diaphragm group.
[accompanying drawing explanation]
Fig. 1 is existing backlight module schematic diagram;
Fig. 2 A is present pre-ferred embodiments schematic diagram;
Fig. 2 B is the different embodiment schematic diagram that in the present invention, reflective substrate does not cover light source module;
Fig. 2 C is the different embodiment schematic diagram that in the present invention, reflective substrate part covers light source module;
Fig. 3 is light travel path schematic diagram in present pre-ferred embodiments; Fig. 4 is light travel path schematic diagram in different embodiments of the invention.
[main element symbol description]
10 backlight modules
20 light guide plate
22 light inputting ends
24 exiting surfaces
30 optical diaphragm group
40 light sources
41 reflector plates
50 carriages
53,54 cushion blocks
70 back covers
80 panel modules
90 liquid crystal indicators
91 light
92 light
100 backlight modules
200 light guide plate
220 light inputting ends
240 exiting surfaces
300 optical diaphragm group
400 light source modules
410 reflector plates
500 carriages
510 flanges
530,540 cushion blocks
127756
600 antiglare modules
620 light-shielding substrates
621 first surfaces
622 second
640 first reflective substrate
641 reflectings surface
644 second reflective substrate
660 glue-lines
700 back covers
800 panel modules
900 display device
901 light
903 light
905 light
990 accommodation spaces
G gap
θ incident angle
[embodiment]
The invention provides a kind of backlight module and comprise its display device.In the preferred embodiment, display device is liquid crystal display; But in different embodiments, display device also can be other displays needing backlight.
Preferred embodiment as shown in Figure 2 A, backlight module 100 of the present invention is for jointly forming display device 900 with panel module 800, carriage 500 and back cover 700.Back cover 700 and carriage 500 form accommodation space 990 jointly with accommodating backlight module 100 and optical diaphragm group 300.The light inlet design of the better employing side-light type of backlight module 100, and comprises light guide plate 200, light source module 400 and antiglare module 600, goodly more comprises reflector plate 410.Light guide plate 200 has adjacent incidence surface 220 and exiting surface 240.Light source module 400 corresponds to incidence surface 220 and arranges, that is is adjacent to incidence surface 220, and and has clearance G between incidence surface 220.Light source module 400 can be included as light emitting diode (LightEmittingDiodes, LED) or cathode fluorescent tube (ColdCathodeFluorescentLamp; The light source such as CCFL).Backlight module 100 comprises optical diaphragm group 300 further and is arranged on exiting surface 240.With preferred embodiment, optical diaphragm group 300 is adjacent to antiglare module 600, forms the aspect be arranged in light guide plate 200 that continues.In other words, optical diaphragm group 300 and antiglare module 600 are side by side and continue and be arranged on exiting surface 240.
Preferred embodiment as shown in Figure 2 A, antiglare module 600 comprises light-shielding substrate 620 and the first reflective substrate 640, and wherein light-shielding substrate 620 is arranged on light source module 400, and extension is covered to exiting surface 240, first reflective substrate 640 is arranged at the bottom surface of light-shielding substrate 620, and is positioned in clearance G.In other words, antiglare module 600 part to be arranged on exiting surface 240 part of contiguous light inputting end 220, and comprises light-shielding substrate 620 and the first reflective substrate 640 is arranged on the first surface 621 of light-shielding substrate 620.Wherein, antiglare module 600 and the first reflective substrate 640 are preferably strip and arrange, and extend along the side of light guide plate 200.The area of the first reflective substrate 640 is not less than (projection) area of clearance G.
In the preferred embodiment, antiglare module 600 comprises the bottom surface that glue-line 660 is arranged at light-shielding substrate 620, and is adjacent to the first reflective substrate 640, and between bright dipping 240 and light-shielding substrate 620.Antiglare module 600 also comprises the second reflective substrate 644 and is arranged at light source module 400 times, and is positioned at the projected position of the first reflective substrate 640, and extends to below clearance G.It is seen with different angles, first reflective substrate 640 area is less than first surface 621, and first surface 621 does not have glue-line 660 with the first reflective substrate 640 lap, fits on exiting surface 240, the first reflective substrate 640 more extends the clearance G covered between light source module 400 and light inputting end 220.Wherein, antiglare module 600 is better comprises glue-line 660 and the first reflective substrate 640 is juxtaposed on first surface 621, and glue-line 660 connects first surface 621 and not overlapping with the first reflective substrate 640 on exiting surface 240.The better refractive index being more than or equal to light guide plate 200 of the refractive index of glue-line 660.The thickness of glue-line 660 is better, is not more than or is less than the thickness of the first reflective substrate 640, makes exiting surface 240 compared with the reflecting surface 641 of the first reflective substrate 640 close to first surface 621.
As shown in Figure 3, because the part of light inputting end 220 contiguous on exiting surface 240 is provided with antiglare module 600, therefore originally can not produce the light 901 of total reflection at exiting surface 240 because incident angle is less than the angle of total reflection, directly will be covered by light-shielding substrate 620, it is avoided to be penetrated near one end of light inputting end 220 by light guide plate 200, and when cushion block 530,540 displacement of locating light guide plate 200 or optical diaphragm group 300, light 910 is spilt from the gap (not shown) between light guide plate 200 and cushion block 530 or between optical diaphragm group 300 and cushion block 530, and produce light leakage phenomena.On the other hand, because the first reflective substrate 640 extends the clearance G covered between light source module 400 and light inputting end 220, therefore light 903, not only there is light-shielding substrate 620 to cover, more there is the first reflective substrate 640 to be reflected, it therefore can be avoided to be spilt by the clearance G between light source module 400 and light inputting end 220.In other words, the setting of the first reflective substrate 640 not only solves the leakage problem of the clearance G occurred between light source module 400 and light inputting end 220, more improves the utilization factor of light.
First reflective substrate 640 can be the reflexive coating of tool or paster.In preferred embodiment as shown in Figure 2 A, the first reflective substrate 640 extends to and covers light source module 400 completely, reduces the possibility of light leak further, and increases structural stability.But in different embodiments, because of processing procedure convenience or considering of material cost etc. can be saved, select to allow the first reflective substrate 640 cover as shown in Figure 2 B or only partly cover light source module 400 as shown in Figure 2 C, that is first reflective substrate 640 development length be at least greater than the width of clearance G, can clearance G be covered and reduce the generation of light leak.First reflective substrate 640 is better to be supported by light source module 400.Furthermore, one end of the first reflective substrate 640 of antiglare module 600 is better to be supported by light source module 400, and the other end is then supported by light guide plate 200.First reflective substrate 640 separately can arrange double sticky tape or other are connected articles for use with better between light source module 400; So in different embodiments, the first reflective substrate 640 itself also can slightly adhesion, to be connected with light source module 400; Or the first reflective substrate 640 does not directly contact with light source module 400, and therebetween accompanies a gap in order to heat radiation.
Embodiment as shown in Figure 4, antiglare module 600 also comprises the second reflective substrate 640, and reflector plate 410 side by side and continue and be arranged on back cover 700 and the clearance G covered between light source module 400 and light inputting end 220, and relative across clearance G with the first reflective substrate 640.By this, light 905 can be avoided further to be spilt by the clearance G between the light source module 400 of the first reflective substrate 640 subtend and light inputting end 220, and improve the utilization factor of light.
Preferred embodiment as shown in Figure 2 A, carriage 500, around panel module 800, comprises flange 510 and is positioned at second face 622 of antiglare module 600 in contrast to first surface 621.See with different angles, flange 510 forms to the center extension of panel module 800.Panel module 800 is preferably liquid crystal panel; So also can be other display panels needing backlight.
Carriage 500 comprises cushion block 530,540 further and is located in respectively between flange 510 and the second face 622 and flange 510 and optical diaphragm group 300, in order to locate light guide plate 200 and optical diaphragm group 300, and can limit the displacement of antiglare module 600 further.Wherein, be positioned at the cushion block 530 above light guide plate 200, a part is arranged in light guide plate 200 across antiglare module 600 indirectly, and another part is then arranged in the first reflective substrate 640 indirectly across antiglare module 600.In the preferred embodiment, cushion block also should can be adopted strip and arrange, and extends along the side of light guide plate 200.The light peneration of cushion block 530 can lower than the light peneration of light-shielding substrate 620, to improve light screening effect further.Such as, but in different embodiments, the light peneration of cushion block 530 can, lower than the light peneration of light-shielding substrate 620, use elasticity better but the material that light peneration is higher, to improve fixed effect.The material of cushion block 530 is better has compressibility, such as rubber or conducting foam, to produce suitable compressing effect, and can reduce the problem of assembling tolerance and bringing.
Although aforesaid description and graphicly disclosed preferred embodiment of the present invention, must recognize variously to increase, many amendments and replace and may be used in present pre-ferred embodiments, and can not depart from as appended claim the spirit of the principle of the invention that defines and scope.The general those skilled in the art being familiar with the technical field of the invention can know from experience, and the present invention can be used in the amendment of many forms, structure, layout, ratio, material, element and assembly.Therefore, should be regarded as the present invention is described in this embodiment disclosed herein, and be not used to limit the present invention.Scope of the present invention should be defined by rear attached claim, and contains its legal equivalents, is not limited to previous description.
Claims (10)
1. a backlight module, comprises:
One light guide plate, has an adjacent incidence surface and an exiting surface;
One light source module, has a light source, and this light source corresponds to this incidence surface and arranges, and has a gap between this light source and this incidence surface;
One antiglare module, comprises:
One light-shielding substrate, to be arranged on this light source module and to extend to this exiting surface, and covering this gap;
One first reflective substrate, is arranged at this light-shielding substrate, and is positioned on this gap;
One glue-line, is juxtaposed on the bottom surface of this light-shielding substrate with this first reflective substrate, and this glue-line is attached at this exiting surface and not overlapping with this first reflective substrate; And
One cushion block, this cushion block is arranged on this antiglare module, this cushion block part is arranged in this light guide plate across this antiglare module indirectly, another part is then arranged in the first reflective substrate across this antiglare module indirectly, this cushion block adopts strip to arrange, and extend along the side of this light guide plate, the light peneration of this cushion block is lower than the light peneration of this light-shielding substrate.
2. backlight module according to claim 1, is characterized in that, the area of this first reflective substrate is not less than the area in this gap.
3. backlight module according to claim 1, is characterized in that, this first reflective substrate more extends and is covered to this light source module.
4. backlight module according to claim 1, is characterized in that, this glue-line is adjacent to this first reflective substrate, and the thickness of this glue-line is not more than the thickness of the first reflective substrate.
5. backlight module according to claim 1, is characterized in that, this antiglare module also comprises one second reflective substrate, under this second reflective substrate is arranged at this light source module, and is positioned at the projected position of this first reflective substrate, and extends to below this gap.
6. backlight module according to claim 1, is characterized in that, comprises an optical diaphragm group, and this optical diaphragm group is arranged on this exiting surface, and is adjacent to this antiglare module, forms the aspect be arranged in this light guide plate that continues.
7. a display device, comprises
Backlight module according to any one of claim 1 to 5;
One panel module, is arranged in this light guide plate;
One carriage, around this panel module, comprises a flange and is positioned at this antiglare module in contrast to one second an of first surface; And
One back cover, forms an accommodation space with this backlight module accommodating jointly with this carriage.
8. display device according to claim 7, is characterized in that, this carriage comprises this cushion block further and is located between this flange and this second.
9. a display device, comprises
Backlight module according to claim 6;
One panel module, is arranged in this light guide plate;
One carriage, around this panel module, comprises a flange and is positioned at this antiglare module in contrast to one second an of first surface; And
One back cover, forms an accommodation space with this backlight module accommodating and this optical diaphragm group jointly with this carriage.
10. display device according to claim 9, is characterized in that, this carriage comprises a cushion block further and is located between this flange and this optical diaphragm group.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| TW101141600 | 2012-11-08 | ||
| TW101141600A TWI547740B (en) | 2012-11-08 | 2012-11-08 | Backlight module having a light shielding module and display device using the same |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103234160A CN103234160A (en) | 2013-08-07 |
| CN103234160B true CN103234160B (en) | 2016-02-10 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310179531.7A Expired - Fee Related CN103234160B (en) | 2012-11-08 | 2013-05-15 | Backlight module with shading module and display device using the same |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN103234160B (en) |
| TW (1) | TWI547740B (en) |
Families Citing this family (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9798069B2 (en) * | 2013-11-26 | 2017-10-24 | Sakai Display Products Corporation | Backlight device and display apparatus |
| CN105765448A (en) * | 2014-09-26 | 2016-07-13 | 堺显示器制品株式会社 | Display device and method for manufacturing display device |
| CN204300980U (en) | 2015-01-04 | 2015-04-29 | 京东方科技集团股份有限公司 | Catoptric arrangement, backlight module and display unit |
| WO2017163343A1 (en) * | 2016-03-23 | 2017-09-28 | 堺ディスプレイプロダクト株式会社 | Display device |
| EP3563082B1 (en) | 2016-12-28 | 2021-05-05 | LEIA Inc. | Multiview backlighting employing fluorescent multibeam elements |
| KR102353696B1 (en) * | 2016-12-28 | 2022-01-20 | 레이아 인코포레이티드 | Multi-view display with reflective support structure |
| CN108169843B (en) * | 2018-01-31 | 2021-03-19 | Oppo广东移动通信有限公司 | Electronic device, display assembly and backlight module thereof |
| CN108153059B (en) * | 2018-02-01 | 2023-08-04 | Oppo广东移动通信有限公司 | Backlight module, display device and electronic equipment |
| CN109213377A (en) * | 2018-10-16 | 2019-01-15 | 业成科技（成都）有限公司 | Panel module structure and its manufacturing method |
| CN110928052A (en) * | 2019-12-25 | 2020-03-27 | 中航华东光电有限公司 | Liquid crystal display backlight module |
| CN114758578A (en) | 2021-01-11 | 2022-07-15 | 群创光电股份有限公司 | Electronic device with a detachable cover |
| TWI822134B (en) * | 2022-06-22 | 2023-11-11 | 群光電能科技股份有限公司 | Backlight module |
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| JP2000310703A (en) * | 1999-04-27 | 2000-11-07 | Matsushita Electric Ind Co Ltd | Back light |
| CN201680234U (en) * | 2010-03-23 | 2010-12-22 | 深圳华映显示科技有限公司 | Backlight module |
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- 2012-11-08 TW TW101141600A patent/TWI547740B/en not_active IP Right Cessation
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- 2013-05-15 CN CN201310179531.7A patent/CN103234160B/en not_active Expired - Fee Related
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| CN1646854A (en) * | 2002-03-29 | 2005-07-27 | 松下电器产业株式会社 | Illumination unit and liquid crystal display apparatus comprising same |
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Also Published As
| Publication number | Publication date |
|---|---|
| TWI547740B (en) | 2016-09-01 |
| TW201418840A (en) | 2014-05-16 |
| CN103234160A (en) | 2013-08-07 |
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Granted publication date: 20160210 Termination date: 20210515 |