CN102980104B - Backlight module and use the display unit of this backlight module - Google Patents
Backlight module and use the display unit of this backlight module Download PDFInfo
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- CN102980104B CN102980104B CN201210505986.9A CN201210505986A CN102980104B CN 102980104 B CN102980104 B CN 102980104B CN 201210505986 A CN201210505986 A CN 201210505986A CN 102980104 B CN102980104 B CN 102980104B
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Abstract
Backlight module provided by the invention and use the display unit of this backlight module, wherein, backlight module comprises diffuser plate and light supply apparatus and the first reflecting plate, light supply apparatus is arranged between diffuser plate and the first reflecting plate, the exiting surface of light supply apparatus is towards the first reflecting plate, and the light reflection that light supply apparatus sends by the first reflecting plate is to diffuser plate.The display unit of use backlight module of the present invention, comprises backlight module of the present invention.Backlight module of the present invention can not form the hot spot of bright dark inequality in the front of diffuser plate, thus a number of the LED used in traditional down straight aphototropism mode set can be reduced, or reduce the integral thickness of backlight module, when not adopting optical lens, reach the effect using optical lens in traditional down straight aphototropism mode set.The display unit of use backlight module of the present invention, because adopt backlight module of the present invention, its display quality is greatly improved.
Description
Technical field
The present invention relates to Display Technique field, particularly relate to a kind of backlight module and use the display unit of this backlight module.
Background technology
Backlight module is one of significant components of liquid crystal display, and because liquid crystal itself is not luminous, the function of backlight module is exactly well-off brightness and the light source be evenly distributed, and makes the normal show image of liquid crystal display energy.At present, the Display Technique of liquid crystal display has been tending towards ripe, especially there has also been very large development at the design aspect of backlight module.Backlight module, except being applied in the liquid crystal indicator such as liquid crystal display, liquid crystal TV set, can also provide light source for display unit such as DPF, Electronic Paper, mobile phones.
Backlight module is divided into side-light backlight module and down straight aphototropism mode set according to the position difference of light source.Fig. 1 shows a kind of structure of backlight module of prior art, and this backlight module comprises diffuser plate 1 ' and is arranged at the LED 2 ' of side, the back side of diffuser plate 1 '.LED 2 ' is fixed on the medial surface of the backboard 3 ' of the side, the back side being arranged at diffuser plate 1 ' equally.The exiting surface of LED 2 ' is towards the back side of diffuser plate 1 '.Diffuser plate 1 ' converts the light that LED 2 ' sends to area source.Owing to being subject to the restriction of the lighting angle of LED 2 ', the ray cast that LED 2 ' sends can form the bright interval that diameter is A on diffuser plate 1 ', if can not be overlapping between the clear zone between two LED lamp 2 ', the region between clear zone be relatively dark.In order to ensure the homogeneity of backlight module emitting brightness, generally take following several measure:
One, a number of LED 2 ' is increased;
Two, the distance between minimizing LED 2 ' is to increase light mixing distance H;
Three, improve the size of A, namely at LED 2 ' upper increase optical lens 4 ', increase the lighting angle of LED 2 '.
There is certain defect in above-mentioned three kinds of modes: the number increasing LED 2 ' will certainly improve overall power and the price of backlight module respectively, the requirement of discontented podomere energy; Increasing light mixing distance can corresponding increase backlight module thickness, so that increases the integral thickness of display unit of this backlight module of use, does not meet lightening requirement; The third mode essence is improve the lighting angle of LED, be apply the most generally in current down straight aphototropism mode set, be also the most effective mode.But this kind of mode needs additionally to increase optical lens 4 ', so also can increase the cost of backlight module.
Summary of the invention
The object of this invention is to provide a kind of not only can meet energy-conservation requirement, but also the condition of thickness that can reduce backlight module under, be lifted out the backlight module of the homogeneity of brightness and use the display unit of this backlight module.
Backlight module of the present invention, comprise diffuser plate and be all arranged at the light supply apparatus of side, the back side and first reflecting plate of described diffuser plate, described light supply apparatus is arranged between described diffuser plate and described first reflecting plate, for providing light for described diffuser plate, the exiting surface of described light supply apparatus is towards described first reflecting plate, and the light reflection that described light supply apparatus sends by described first reflecting plate is to described diffuser plate.
Backlight module of the present invention, wherein, described light supply apparatus comprises light source and to be arranged on described first reflecting plate and the second reflecting plate at least extended between described light source and described diffuser plate, described second reflecting plate is towards described light source, the light that described light source sends by described second reflecting plate to described first baffle reflection, to make the exiting surface of described light supply apparatus towards described first reflecting plate.
Backlight module of the present invention, wherein, described second reflecting plate comprises one end and is arranged on described first reflecting plate, the first plate body that the other end extends to the direction, place of described diffusion sheet and being connected with the other end of described first plate body and the second plate body between described light source and described diffuser plate.
Backlight module of the present invention, wherein, described second reflecting plate also comprises one end and is arranged on described reflecting plate, the 3rd plate body that the other end extends to the direction, place of described diffusion sheet, and the other end of described 3rd plate body is connected with described second plate body.
Backlight module of the present invention, wherein, described first plate body connects the relative both sides of described second plate body respectively with described 3rd plate body.
Backlight module of the present invention, wherein, described light source is fixed on the face of described first reflecting plate and/or on the medial surface of described first plate body of described second plate body.
Backlight module of the present invention, wherein, described first reflecting plate is provided with for increasing the irreflexive diffusion particle of light.
Backlight module of the present invention, wherein, described diffusion particle is arranged in region relative with the inner side of described second reflecting plate on described first reflecting plate.
Backlight module of the present invention, wherein, described light supply apparatus is multiple, and described multiple light supply apparatus is along parallel with described diffuser plate arranged in a straight line between described diffuser plate and described first reflecting plate.
The display unit of use backlight module of the present invention, comprises backlight module of the present invention.
Backlight module of the present invention operationally, the light that light supply apparatus sends after the first baffle reflection from entering diffuser plate, in reflection process, light is mixed, so both need not increase the distance of light source to diffuser plate, and also need not increase the incident light that quantity of light source or lens just can obtain brightness uniformity, avoid the lighting angle problem of light source thus, improve the homogeneity of diffuser plate emitting brightness, avoid the generation of hot spot.
Compared with traditional direct-light type LED backlight module, backlight module of the present invention is owing to changing the light direction of light source, the hot spot of bright dark inequality can not be formed in the front of diffuser plate, thus a number of the LED used in traditional down straight aphototropism mode set can be reduced, or reduce the integral thickness of backlight module, when not adopting optical lens, reach the effect using optical lens in traditional down straight aphototropism mode set.
The display unit of use backlight module of the present invention, because adopt backlight module of the present invention, its integral thickness can reduce, and cost can reduce further, and its display quality is greatly improved.
Accompanying drawing explanation
Fig. 1 is the structural representation of the backlight module of prior art;
Fig. 2 is the front view of the structural representation of the first embodiment of backlight module of the present invention;
Fig. 3 is the paths schematic diagram of the first embodiment of backlight module of the present invention;
Fig. 4 is the sectional view of bowing of Fig. 2, shows the structure after the first embodiment removal diffuser plate of backlight module of the present invention;
Fig. 5 is the front view of the structural representation of the second embodiment of backlight module of the present invention;
Fig. 6 is the front view of the structural representation of the third embodiment of backlight module of the present invention;
Fig. 7 is the front view of the structural representation of the 4th kind of embodiment of backlight module of the present invention.
Detailed description of the invention
Embodiment one
As shown in Figure 2 and Figure 3, the embodiment of backlight module of the present invention, comprises diffuser plate 1 and is all arranged at the light supply apparatus 2 of side, the back side and first reflecting plate 3 of diffuser plate 1.Light supply apparatus 2 is arranged between diffuser plate 1 and the first reflecting plate 3, for providing light for diffuser plate 1.The light reflection that light supply apparatus 2 sends towards the first reflecting plate 3, first reflecting plate 3 by the exiting surface of light supply apparatus 2 is to diffuser plate 1.Backboard 6 is arranged at the back side of the first reflecting plate 3, for strengthening the bulk strength of backlight module.Hollow arrow in Fig. 3 shows light transmition path.
In the embodiment of backlight module of the present invention, the light that in down straight aphototropism mode set, light supply apparatus sends directly does not enter diffuser plate, but most directive first reflecting plate, the light reflection that light supply apparatus sends by the first reflecting plate is to diffuser plate, in reflection process, light is mixed, so both need not increase the distance of light source to diffuser plate, also the incident light that quantity of light source or lens just can obtain brightness uniformity need not be increased, avoid the lighting angle problem of light source thus, improve the homogeneity of diffuser plate emitting brightness, avoid the generation of hot spot.
The embodiment of backlight module of the present invention, wherein, light supply apparatus 2 comprises light source 5 and to be arranged on the first reflecting plate 3 and the second reflecting plate 4 at least extended between light source 5 and diffuser plate 1, second reflecting plate 4 is towards light source 5, the light that light source 5 sends by the second reflecting plate 4 reflects to the first reflecting plate 3, to make the exiting surface of light supply apparatus 2 towards the first reflecting plate 3.
The embodiment of backlight module of the present invention, wherein, second reflecting plate 4 comprises one end and is arranged on the first reflecting plate 3, the first plate body 11 that the other end extends to the direction, place of diffusion sheet 1 and being connected with the other end of the first plate body 11 and the second plate body 12 between light source 5 and diffuser plate 1.The light that light source 5 sends by the first plate body 11 and the second plate body 12 reflects to the first reflecting plate 3.
The embodiment of backlight module of the present invention, wherein, the second reflecting plate 4 also comprises one end and is arranged on the first reflecting plate 3, and the other end of the 3rd plate body the 13, three plate body 13 that the other end extends to the direction, place of diffusion sheet 1 is connected with the second plate body 12.
The embodiment of backlight module of the present invention, wherein, the first plate body 11 connects the relative both sides of the second plate body 12 respectively with the 3rd plate body 13.
The embodiment of backlight module of the present invention, wherein, light source 5 be fixed on the second plate body 12 towards on the face of the first reflecting plate 3, like this arrange light source 5 is sent light direct irradiation first reflecting plate 3, avoid light loss.
The embodiment of backlight module of the present invention, wherein, the first reflecting plate 3 is provided with for increasing the irreflexive diffusion particle 7 of light.
The embodiment of backlight module of the present invention, wherein, diffusion particle 7 is arranged in region relative with the inner side of the second reflecting plate 4 on the first reflecting plate 3.Specifically, diffusion particle 7 is arranged in region relative with inside the first plate body 11, second plate body 12 on the first reflecting plate 3 or is arranged in region relative with the inner side of the first plate body 11, second plate body 12, the 3rd plate body 13 on the first reflecting plate 3.
The diffuse reflection of the light that the setting of diffusion particle 7 makes light source 5 send is enhanced, and avoids light concentrate and produce hot spot.
Shown in composition graphs 4, the embodiment of backlight module of the present invention, wherein, light supply apparatus 2 is multiple, and multiple light supply apparatus 2 is along parallel with diffuser plate 1 arranged in a straight line between diffuser plate 1 and the first reflecting plate 3.
Embodiment two
Shown in composition graphs 5, the embodiment of backlight module of the present invention and the difference of embodiment one are only in light supply apparatus 2, and the arrangement of light source 5 is different.
The embodiment of backlight module of the present invention, wherein, light source 5 is fixed on the medial surface of the first plate body 11.The light that light source 5 sends, through the second plate body 12, the 3rd plate body 13 reflex to the first reflecting plate 3, first reflecting plate 3 by light reflection to diffuser plate 1.Hollow arrow in Fig. 5 shows light transmition path.
Embodiment three
Shown in composition graphs 6, the difference of the embodiment of backlight module of the present invention and embodiment one, embodiment two is only in light supply apparatus 2, and the arrangement of light source 5 is different.
The embodiment of backlight module of the present invention, wherein, light source 5 is fixed on the face of the first reflecting plate 3 and on the medial surface of the first plate body 11 of the second plate body 12.The light that light source 5 sends or through the second plate body 12, the 3rd plate body 13 reflex to the first reflecting plate 3, or be directly incident upon the first reflecting plate 3, first reflecting plate 3 by light reflection to diffuser plate 1.
Embodiment four
Shown in composition graphs 7, the difference of the embodiment of backlight module of the present invention and embodiment one, embodiment two, embodiment three is only in light supply apparatus 2, and the arrangement of light source 5 is different.Hollow arrow in Fig. 7 shows light transmition path.
The embodiment of backlight module of the present invention, wherein, light source 5 be fixed on the second plate body 12 towards on the face of the first reflecting plate 3, on the medial surface of the first plate body 11 and on the medial surface of the 3rd plate body 13.The light that light source 5 sends or through the second plate body 12, the 3rd plate body 13 reflex to the first reflecting plate 3, or be directly incident upon the first reflecting plate 3, first reflecting plate 3 by light reflection to diffuser plate 1.
The display unit of the use backlight module of the embodiment of the present invention, comprises backlight module, and above-mentioned backlight module is the backlight module in above-described embodiment.
The invention provides a kind of brand-new back light module unit structure.In tradition down straight aphototropism mode set, the exiting surface of light source upward, owing to being subject to the restriction of light source luminescent angle, for ensureing that certain brightness homogeneity needs to provide larger light mixing distance or more LED.The light that in the down straight aphototropism mode set of the present invention's design, light source sends directly does not enter diffuser plate, but by upwards propagating after reflection, avoids the lighting angle problem of light source with this again.
Backlight module of the present invention, when same LED quantity, not only can reduce the thickness of backlight module but also can effectively improve picture homogeneity.
The display unit of the use backlight module of the embodiment of the present invention, comprises backlight module, and above-mentioned backlight module is the backlight module in above-described embodiment.Described display unit can be: any product or parts with Presentation Function such as liquid crystal panel, Electronic Paper, oled panel, LCD TV, liquid crystal display, DPF, mobile phone, panel computer.Owing to have employed above-mentioned backlight module in above-mentioned display unit, backlight module, when same LED quantity, not only can reduce the thickness of backlight module but also can effectively improve picture homogeneity.
The above is only the preferred embodiment of the present invention; it should be pointed out that for those skilled in the art, under the premise without departing from the principles of the invention; can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.
Claims (5)
1. a backlight module, comprise diffuser plate and be all arranged at the light supply apparatus of side, the back side and first reflecting plate of described diffuser plate, described light supply apparatus is arranged between described diffuser plate and described first reflecting plate, for providing light for described diffuser plate, it is characterized in that, the exiting surface of described light supply apparatus is towards described first reflecting plate, the light reflection that described light supply apparatus sends by described first reflecting plate is to described diffuser plate, described light supply apparatus comprises light source and to be arranged on described first reflecting plate and the second reflecting plate at least extended between described light source and described diffuser plate, described second reflecting plate is towards described light source, the light that described light source sends by described second reflecting plate is to described first baffle reflection, to make the exiting surface of described light supply apparatus towards described first reflecting plate,
Described second reflecting plate comprises one end and is arranged on described first reflecting plate, the first plate body that the other end extends to the direction, place of described diffusion sheet and being connected with the other end of described first plate body and the second plate body between described light source and described diffuser plate;
Described second reflecting plate also comprises one end and is arranged on described reflecting plate, the 3rd plate body that the other end extends to the direction, place of described diffusion sheet, and the other end of described 3rd plate body is connected with described second plate body;
Described first plate body connects the relative both sides of described second plate body respectively with described 3rd plate body;
On the medial surface that described light source is fixed on described first plate body and/or on the medial surface of described 3rd plate body.
2. backlight module according to claim 1, is characterized in that, described first reflecting plate is provided with diffusion particle.
3. backlight module according to claim 2, is characterized in that, described diffusion particle is arranged in region relative with the inner side of described second reflecting plate on described first reflecting plate.
4. backlight module according to claim 1, is characterized in that, described light supply apparatus is multiple, and described multiple light supply apparatus is along parallel with described diffuser plate arranged in a straight line between described diffuser plate and described first reflecting plate.
5. use a display unit for backlight module, it is characterized in that, comprise the backlight module as described in any one of claim 1-4.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210505986.9A CN102980104B (en) | 2012-11-30 | 2012-11-30 | Backlight module and use the display unit of this backlight module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210505986.9A CN102980104B (en) | 2012-11-30 | 2012-11-30 | Backlight module and use the display unit of this backlight module |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102980104A CN102980104A (en) | 2013-03-20 |
| CN102980104B true CN102980104B (en) | 2016-03-30 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201210505986.9A Expired - Fee Related CN102980104B (en) | 2012-11-30 | 2012-11-30 | Backlight module and use the display unit of this backlight module |
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Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103674496B (en) * | 2013-12-23 | 2016-05-25 | 京东方科技集团股份有限公司 | Light source luminescent characteristic detection device |
| CN103968300A (en) * | 2014-04-23 | 2014-08-06 | 京东方科技集团股份有限公司 | Backlight source and display device |
| CN105156941A (en) * | 2015-07-06 | 2015-12-16 | 高创(苏州)电子有限公司 | Backlight module and display device |
| CN109991777B (en) * | 2019-04-09 | 2020-11-24 | 深圳市华星光电半导体显示技术有限公司 | Backlight module, preparation method thereof and display device |
| CN111913320A (en) * | 2019-05-09 | 2020-11-10 | 北京易美新创科技有限公司 | Backlight module and display device |
| CN112771440B (en) * | 2019-09-05 | 2022-08-23 | 瑞仪(广州)光电子器件有限公司 | Backlight module and display device |
| CN112578589A (en) * | 2019-09-27 | 2021-03-30 | 海信视像科技股份有限公司 | Display device and backlight module |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4208922C1 (en) * | 1992-03-19 | 1993-05-27 | Wustlich, Hans-Dieter | Flat display background illuminator - has plastics-sealed PCB housing which displays by reflection using diffusing glass in sealing material |
| GB2360868A (en) * | 2000-03-30 | 2001-10-03 | Elliott Ind Ltd | Low-profile Illuminators |
| CN2458485Y (en) * | 2000-11-16 | 2001-11-07 | 上海嘉利莱实业有限公司 | LED lighting module |
| CN1512230A (en) * | 2002-12-27 | 2004-07-14 | 鸿富锦精密工业（深圳）有限公司 | Back light module |
| KR100665005B1 (en) * | 2004-12-30 | 2007-01-09 | 삼성전기주식회사 | Backlight system having leds |
| JP2006284906A (en) * | 2005-03-31 | 2006-10-19 | Sony Corp | Backlight device and liquid crystal display device |
| US7481563B2 (en) * | 2006-09-21 | 2009-01-27 | 3M Innovative Properties Company | LED backlight |
| US8251529B2 (en) * | 2006-10-10 | 2012-08-28 | Koninklijke Philips Electronics N.V. | Thin illumination device, display device and luminary device |
| CN201517726U (en) * | 2009-09-29 | 2010-06-30 | 康佳集团股份有限公司 | Led back light module |
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