CN103901525A - Light guide plate, backlight module and liquid crystal display device - Google Patents
Light guide plate, backlight module and liquid crystal display device Download PDFInfo
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- CN103901525A CN103901525A CN201210582298.2A CN201210582298A CN103901525A CN 103901525 A CN103901525 A CN 103901525A CN 201210582298 A CN201210582298 A CN 201210582298A CN 103901525 A CN103901525 A CN 103901525A
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- light
- guide plate
- light guide
- backlight module
- wedge shape
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Abstract
The invention relates to a backlight module which comprises a light guide plate and a plurality of light sources. The light guide plate comprises a wedge-shaped light incoming portion and a plate-shaped effective visual portion which adjoins the wedge-shaped light incoming portion. The wedge-shaped light incoming portion and the effective visual portion share a bottom surface. The thickness of the wedge-shaped light incoming portion is larger than that of the effective visual portion. The wedge-shaped light incoming portion has a light incoming surface perpendicular to the bottom surface and an inclined surface which is opposite to the light incoming surface and is connected with the effective visual portion. The effective visual portion has a light outgoing surface which is opposite to the bottom surface. A reflecting layer is formed on the inclined surface. The invention also discloses the light guide plate used by the backlight module and a liquid crystal display device comprising the backlight module.
Description
Technical field
The present invention relates to a kind of liquid crystal indicator, also relate to the light guide plate using in the backlight module that uses in a kind of described liquid crystal indicator and described backlight module.
Background technology
Now, electronic product, particularly consumption electronic products, towards compact future development.For this reason, the various spare parts of electronic product, for example side direction light inlet light guide plate, is also developing to slimming.But, due to light source send only to all directions propagate, in the time of light guide plate attenuation, will cause part light to spread in air, and can not enter light guide plate, cause light leakage phenomena.
Summary of the invention
In view of this, be necessary to provide a kind of light guide plate that reduces or eliminate light leakage phenomena.
In view of this, be also necessary to provide a kind of backlight module that reduces or eliminate light leakage phenomena.
In view of this, be also necessary to provide a kind of liquid crystal indicator that reduces or eliminate light leakage phenomena.
A kind of light guide plate, described light guide plate comprise wedge shape light in part and with described wedge shape light in part adjacent be flat effective visible section, described wedge shape light in part and described effective visible section have common bottom surface, the thickness of described wedge shape light in part is greater than the thickness of described effective visible section, described wedge shape light in part have the incidence surface vertical with described bottom surface and with described incidence surface relatively and be connected the inclined-plane of described effective visible section, described effective visible section has the exiting surface relative with described bottom surface, on described inclined-plane, is formed with reflection horizon.
A kind of backlight module, comprises a light guide plate and at least one light source.Described light guide plate comprise wedge shape light in part and with described wedge shape light in part adjacent be flat effective visible section, described wedge shape light in part and described effective visible section have common bottom surface, the thickness of described wedge shape light in part is greater than the thickness of described effective visible section, described wedge shape light in part have the incidence surface vertical with described bottom surface and with described incidence surface relatively and be connected the inclined-plane of described effective visible section, described effective visible section has the exiting surface relative with described bottom surface, on described inclined-plane, is formed with reflection horizon.The contiguous described incidence surface setting of described at least one light source.
A kind of liquid crystal indicator, comprises a backlight module and a liquid crystal panel.Described backlight module comprises a light guide plate and at least one light source.Described light guide plate comprise wedge shape light in part and with described wedge shape light in part adjacent be flat effective visible section, described wedge shape light in part and described effective visible section have common bottom surface, the thickness of described wedge shape light in part is greater than the thickness of described effective visible section, described wedge shape light in part have the incidence surface vertical with described bottom surface and with described incidence surface relatively and be connected the inclined-plane of described effective visible section, described effective visible section has the exiting surface relative with described bottom surface, on described inclined-plane, is formed with reflection horizon.The contiguous described incidence surface setting of described at least one light source.Described liquid crystal panel is arranged on described exiting surface.
The present invention is provided with thicker wedge shape light in part, can fully absorb the light that light source sends, and prevents light leak.Be provided with thinner effective visible section simultaneously, can effectively reduce the thickness of liquid crystal indicator.
Accompanying drawing explanation
Fig. 1 is the side view of the liquid crystal indicator of an embodiment of the present invention.
Fig. 2 is the vertical view of the liquid crystal indicator shown in Fig. 1.
Main element symbol description
| |
100 |
| Backlight module | 10 |
| |
20 |
| Optical diaphragm group | 30 |
| Diffusion sheet | 31 |
| Brightness enhancement film | 32 |
| |
50 |
| Wedge shape light in |
51 |
| Effectively |
52 |
| Inclined- |
56 |
| |
60 |
| |
53 |
| Exiting |
54 |
| |
55 |
| |
57 |
| |
58 |
Following embodiment further illustrates the present invention in connection with above-mentioned accompanying drawing.
Embodiment
Refer to Fig. 1 to Fig. 2, it has disclosed the liquid crystal indicator 100 of the present invention's one preferred implementation, and described liquid crystal indicator 100 comprises backlight module 10 and liquid crystal panel 20.
Described backlight module 10 comprises light guide plate 50, is installed on multiple light sources 60 of contiguous light guide plate 50 1 side edge and is arranged at the optical diaphragm group 30 in described light guide plate 50.In the present embodiment, described light source 60 is LED, and described light guide plate 50 is made with resin.
Described light guide plate 50 comprises wedge shape light in part 51 and the flat effective visible section 52 away from light source 60 of a contiguous light source 60.Wedge shape light in part 51 and effective visible section 52 are one-body molded, and there is common bottom surface 53, effectively visible section 52 has the exiting surface relative with bottom surface 53 54, and wedge shape light in part 51 has towards light source 60 and the incidence surface 55 vertical with bottom surface 53, inclined-plane 56 relative with incidence surface 55 and that be connected with effective visible section 52 and connects incidence surface 55 and inclined-plane 56 and the joint face 57 parallel with bottom surface 53.On inclined-plane 56 and joint face 57, be formed with a reflection horizon 58.In the present embodiment, reflection horizon 58 is with highly reflective material, for example aluminium or nickel form, reflection horizon 58 is formed on inclined-plane 56 and joint face 57 by the mode of plated film, in other embodiments, reflection horizon 58 also can be formed on a flexible PCB, and along with described flexible PCB is pasted on inclined-plane 56 and joint face 57 together.
The maximum ga(u)ge (bottom surface 53 is to the distance between joint face 57) of wedge shape light in part 51 is greater than the thickness (bottom surface 53 is to the distance between exiting surface 54) of effective visible section 52.In the present embodiment, the maximum ga(u)ge of wedge shape light in part 51 is 0.7mm, and effectively the thickness of visible section 52 is 0.5mm.
Optical diaphragm group 30 is positioned on exiting surface 54.In the present embodiment, optical diaphragm group 30 comprises stacking a diffusion sheet 31, a brightness enhancement film 32.Diffusion sheet 31 and brightness enhancement film 32 are all made with resin material, are distributed with diffusion particle (not shown) in diffusion sheet 31.Liquid crystal panel 20 is positioned in optical diaphragm group 30.
In the time using, the light that light source 60 sends penetrates from exiting surface 54 after entering light guide plate 50 by incidence surface 55, through diffusion sheet 31, light is spread and brightness enhancement film 32 just transfers the direction of propagation of light to after liquid crystal panel 20 to, illuminates described liquid crystal panel 20.
Because wedge shape light in part 51 has thicker thickness, therefore can allow more light enter light guide plate 50, thereby reduce the light leakage phenomena of even having eliminated light source 60.Further, in the time having light to arrive joint face 57 and inclined-plane 56, can be reflected layer 58 and reflect, guarantee that light can only penetrate from the exiting surface of effective visible section 52 54, thereby increased the brightness of effective visible section 52.Meanwhile, 20 of optical diaphragm group 30 and liquid crystal panels are arranged in thinner effective visible section 52, have guaranteed that liquid crystal indicator 100 entirety have thinner thickness.
In a word; those skilled in the art will be appreciated that; above embodiment is only for the present invention is described; and be not used as limitation of the invention; as long as within connotation scope of the present invention, within the appropriate change that above embodiment is done and variation all drop on the scope of protection of present invention.
Claims (10)
1. a light guide plate, comprise wedge shape light in part and with described wedge shape light in part adjacent be flat effective visible section, described wedge shape light in part and described effective visible section have common bottom surface, the thickness of described wedge shape light in part is greater than the thickness of described effective visible section, described wedge shape light in part have the incidence surface vertical with described bottom surface and with described incidence surface relatively and be connected the inclined-plane of described effective visible section, described effective visible section has the exiting surface relative with described bottom surface, on described inclined-plane, is formed with reflection horizon.
2. light guide plate as claimed in claim 1, is characterized in that: described light guide plate is made of plastics.
3. light guide plate as claimed in claim 1, is characterized in that: the maximum ga(u)ge of described wedge shape light in part is 0.7mm, and effectively the thickness of visible section is 0.5mm.
4. light guide plate as claimed in claim 1, is characterized in that: described wedge shape light in part also comprises the described incidence surface of connection and described inclined-plane and the joint face parallel with described bottom surface.
5. light guide plate as claimed in claim 4, is characterized in that: described reflection horizon is also formed on described joint face.
6. a backlight module, comprises at least one light source of light guide plate as described in any one in claim 1 to 5 and contiguous described incidence surface setting.
7. backlight module as claimed in claim 6, is characterized in that: this backlight module also comprises the optical diaphragm group being arranged on described exiting surface.
8. backlight module as claimed in claim 7, is characterized in that: described optical diaphragm group comprises and is arranged at the diffusion sheet on this exiting surface and is arranged at the brightness enhancement film on this diffusion sheet.
9. a liquid crystal indicator, comprises backlight module as claimed in claim 6 and is arranged at the liquid crystal panel on described exiting surface.
10. liquid crystal indicator as claimed in claim 9, is characterized in that: described backlight module also comprises the optical diaphragm group being arranged between described liquid crystal panel and described exiting surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210582298.2A CN103901525A (en) | 2012-12-28 | 2012-12-28 | Light guide plate, backlight module and liquid crystal display device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210582298.2A CN103901525A (en) | 2012-12-28 | 2012-12-28 | Light guide plate, backlight module and liquid crystal display device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103901525A true CN103901525A (en) | 2014-07-02 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210582298.2A Pending CN103901525A (en) | 2012-12-28 | 2012-12-28 | Light guide plate, backlight module and liquid crystal display device |
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| Country | Link |
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| CN (1) | CN103901525A (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104142533A (en) * | 2014-08-20 | 2014-11-12 | 深圳市华星光电技术有限公司 | Machining stack structure and machining mode of light guide plates |
| CN104793284A (en) * | 2015-04-30 | 2015-07-22 | 武汉华星光电技术有限公司 | Light guiding plate, backlight module and liquid crystal display |
| WO2016082307A1 (en) * | 2014-11-26 | 2016-06-02 | 深圳市华星光电技术有限公司 | Light guide plate and backlight module |
| CN106094076A (en) * | 2016-08-19 | 2016-11-09 | 武汉华星光电技术有限公司 | Brightness enhancement film and backlight module |
| CN106352304A (en) * | 2016-10-19 | 2017-01-25 | 武汉华星光电技术有限公司 | Light guide plate structure and backlight module |
| WO2017020364A1 (en) * | 2015-08-06 | 2017-02-09 | 武汉华星光电技术有限公司 | Backlight module for liquid crystal displays |
| CN108267892A (en) * | 2018-01-22 | 2018-07-10 | 北京京东方茶谷电子有限公司 | A kind of backlight module and display device |
| CN113466987A (en) * | 2021-07-20 | 2021-10-01 | 拓米(成都)应用技术研究院有限公司 | Light guide plate structure and preparation method thereof |
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| JPH0553111A (en) * | 1991-08-23 | 1993-03-05 | Rohm Co Ltd | Light guiding plate structure of thin edge light type liquid crystal display device |
| CN2731497Y (en) * | 2004-08-05 | 2005-10-05 | 西安海晶光电科技有限公司 | Superthin liquid crystal module back-light source |
| CN101126867A (en) * | 2006-08-18 | 2008-02-20 | 株式会社日立显示器 | Liquid crystal display device |
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| CN201210211Y (en) * | 2008-06-16 | 2009-03-18 | 亚通光电科技(深圳)有限公司 | Back light module having wedge light conducting structure |
| CN101446709A (en) * | 2007-11-26 | 2009-06-03 | 株式会社日立显示器 | Liquid crystal display device |
| CN102563541A (en) * | 2011-08-17 | 2012-07-11 | 友达光电股份有限公司 | Light guide plate and backlight module |
| CN202561652U (en) * | 2012-04-13 | 2012-11-28 | 京东方科技集团股份有限公司 | Light guide plate, edge-lit backlight module and liquid crystal display device |
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2012
- 2012-12-28 CN CN201210582298.2A patent/CN103901525A/en active Pending
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| JPH0553111A (en) * | 1991-08-23 | 1993-03-05 | Rohm Co Ltd | Light guiding plate structure of thin edge light type liquid crystal display device |
| CN2731497Y (en) * | 2004-08-05 | 2005-10-05 | 西安海晶光电科技有限公司 | Superthin liquid crystal module back-light source |
| CN101126867A (en) * | 2006-08-18 | 2008-02-20 | 株式会社日立显示器 | Liquid crystal display device |
| CN101226304A (en) * | 2007-01-17 | 2008-07-23 | 株式会社日立显示器 | Liquid crystal display module |
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| CN201210211Y (en) * | 2008-06-16 | 2009-03-18 | 亚通光电科技(深圳)有限公司 | Back light module having wedge light conducting structure |
| CN102563541A (en) * | 2011-08-17 | 2012-07-11 | 友达光电股份有限公司 | Light guide plate and backlight module |
| CN202561652U (en) * | 2012-04-13 | 2012-11-28 | 京东方科技集团股份有限公司 | Light guide plate, edge-lit backlight module and liquid crystal display device |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104142533A (en) * | 2014-08-20 | 2014-11-12 | 深圳市华星光电技术有限公司 | Machining stack structure and machining mode of light guide plates |
| WO2016082307A1 (en) * | 2014-11-26 | 2016-06-02 | 深圳市华星光电技术有限公司 | Light guide plate and backlight module |
| CN104391350B (en) * | 2014-11-26 | 2018-01-16 | 深圳市华星光电技术有限公司 | A kind of light guide plate and backlight module |
| CN104793284A (en) * | 2015-04-30 | 2015-07-22 | 武汉华星光电技术有限公司 | Light guiding plate, backlight module and liquid crystal display |
| US10591775B2 (en) | 2015-04-30 | 2020-03-17 | Wuhan China Star Optoelectronics Technology Co., Ltd | Backlight module comprising a light guide plate having a cavity and a plurality of quantum dots confined within the cavity |
| WO2017020364A1 (en) * | 2015-08-06 | 2017-02-09 | 武汉华星光电技术有限公司 | Backlight module for liquid crystal displays |
| CN106094076A (en) * | 2016-08-19 | 2016-11-09 | 武汉华星光电技术有限公司 | Brightness enhancement film and backlight module |
| CN106352304A (en) * | 2016-10-19 | 2017-01-25 | 武汉华星光电技术有限公司 | Light guide plate structure and backlight module |
| CN108267892A (en) * | 2018-01-22 | 2018-07-10 | 北京京东方茶谷电子有限公司 | A kind of backlight module and display device |
| CN113466987A (en) * | 2021-07-20 | 2021-10-01 | 拓米(成都)应用技术研究院有限公司 | Light guide plate structure and preparation method thereof |
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Application publication date: 20140702 |
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