CN202561652U - Light guide plate, edge-lit backlight module and liquid crystal display device - Google Patents
Light guide plate, edge-lit backlight module and liquid crystal display device Download PDFInfo
- Publication number
- CN202561652U CN202561652U CN2012201584961U CN201220158496U CN202561652U CN 202561652 U CN202561652 U CN 202561652U CN 2012201584961 U CN2012201584961 U CN 2012201584961U CN 201220158496 U CN201220158496 U CN 201220158496U CN 202561652 U CN202561652 U CN 202561652U
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- lgp
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- flat board
- liquid crystal
- lug boss
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Abstract
The utility model provides a light guide plate, an edge-lit backlight module and a liquid crystal display device, which relate to the technical field of the liquid crystal display backlight module design. A light guide plate body is a panel, a protruding part is formed at the light incoming end of the panel, and is provided with an outer end face which is as high as one outside surface of the panel, and the outer end face and the outside surface form the light incoming end face of the light guide plate, wherein a reflection layer is formed at the preset upper surface area of the connection part of the panel and the protruding part. The light loss of the light guide plate can be reduced, the optical efficiency of the light guide plate is increased, and the liquid crystal display effect is improved.
Description
Technical field
The utility model relates to LCD backlight module technical field, is specifically related to a kind of LGP, side-light type module backlight and liquid crystal indicator.
Background technology
Liquid crystal panel itself is not luminous, needs module backlight that light is provided.Module backlight is a kind of light source that is positioned at the display panels back, and its illumination effect will directly have influence on the visual effect of liquid crystal display.Module backlight is provided with the position and can be divided into straight-down negative and side-light type according to light source.
Because side-light type module backlight has the advantage of light weight, slim, low power consumption, meet the development trend of existing market, used widely.Side-light type module backlight generally comprises: light source, LGP, end reflector plate, optical film material, structural member (backboard, framework, lamp batten or the like).Wherein, optical film material is arranged between LGP and the liquid crystal panel usually, and light source is arranged on the side of LGP, and end reflector plate is around in the rear side of LGP, is used for reflection ray.Most crucial technology is the optical technology of LGP in the module backlight; LGP is used for converting incident light to planar light based on light scattering principle; Pass through diffusion, blast of optical film material etc. from the light of LGP outgoing again, form needed area source and offer liquid crystal panel.
LCD has been applied to the every field of people's daily life at present, for example comprises the handheld device of smart mobile phone, and people also have higher requirement to liquid crystal indicator.Show or the like that like high-resolution, 3D for keeping having good display effect, module backlight just must have higher brightness, also need satisfy slimming even extra-thin Structural Design Requirement simultaneously.Therefore the LGP of prior art thins down, and (Light Emitting Diode, thickness LED) is attenuation thereupon also to require light emitting diode as light source.And after the LED attenuation because the restriction of its technical capability, luminous flux also can descend, thereby has influence on the effect of liquid crystal display.
The utility model content
In view of this, the purpose of the utility model provides a kind of LGP, side-light type module backlight and liquid crystal indicator, in order to reduce the light loss of LGP, promotes the LGP optical efficiency, improves the liquid crystal display effect.
For solving the problems of the technologies described above, the utility model provides scheme following:
A kind of LGP; The main body of said LGP is a flat board; Light incident side place at said flat board is formed with a lug boss, and said lug boss has the outer face with a lateral surface flush of said flat board, and said outer face and said lateral surface form the light-incident end of said LGP;
Wherein, the preset surface area of said flat board and said lug boss junction is formed with the reflecting layer.
Preferably, in the above-mentioned LGP, said lug boss is a wedge, and said wedge has an inclined-plane, the upper surface handing-over of said inclined-plane and said flat board;
The presumptive area that extends to the upper surface of said flat board from said inclined-plane is formed with said reflecting layer.
Preferably, in the above-mentioned LGP, said wedge is trapezoidal along the cross section of said smooth incident direction.
Preferably, in the above-mentioned LGP, said dull and stereotyped through extrusion modling, said wedge is through injection mo(u)lding, and said wedge and said flat board bond together through optical glue.
Preferably, in the above-mentioned LGP, said reflecting layer is the coating that forms through vacuum ion sputtering technology.
Preferably, in the above-mentioned LGP, said light-incident end cuts into zigzag through punching press.
Preferably, in the above-mentioned LGP, be laid with a plurality of sites in the said flat board.
The utility model also provides a kind of side-light type module backlight, comprises above-described LGP, also comprises at least one module lamp backlight, and said module lamp backlight is arranged on the side of said LGP.
Preferably, in the above-mentioned side-light type module backlight, also comprise the backboard that is arranged on said LGP below, and the upper frame that is arranged on said LGP top;
Wherein, between said backboard and said LGP, also be provided with end reflector plate, between said LGP and said upper frame, also be provided with optical film material.
The utility model also provides a kind of liquid crystal indicator, comprises display panels, also comprises above-described side-light type module backlight.
Can find out from the above; The LGP that the utility model provides, side-light type module backlight and liquid crystal indicator; Utilization is formed on the reflecting layer on the LGP; Improved optical efficiency effectively, prevented that because the light loss that lug boss causes to dull and stereotyped transition region, the while can also promote the picture quality of module incident side backlight; And the utility model embodiment also adopts the lug boss and the dull and stereotyped mode of machine-shaping respectively of main body of LGP, can make the dimensional thickness of LGP all can obtain breaking through so that the making of ultra-thin light guide board no longer sticks to injection moulding board capabilities limits.
Description of drawings
Fig. 1 is the structural representation of the described LGP of the utility model embodiment;
Fig. 2 is the light loss sketch map of LGP;
Fig. 3 is the structural representation of a kind of side-light type module backlight;
Fig. 4 is a kind of shape sketch map of the said lug boss of the utility model embodiment;
Fig. 5 is the another kind of shape sketch map of the said lug boss of the utility model embodiment;
Fig. 6 is another shape sketch map of the said lug boss of the utility model embodiment;
Fig. 7 is the process equipment and the schematic flow sheet of LGP described in the utility model embodiment;
The product sketch map that Fig. 8 (A)～Fig. 8 (E) obtains in each step of making said LGP for the utility model embodiment;
Fig. 9 obtains the operation sketch map in reflecting layer for sputtering technology.
The specific embodiment
For the purpose, technical scheme and the advantage that make the utility model is clearer, will combine accompanying drawing and specific embodiment that the utility model is described in detail below.
Based on slimming even extra-thin structural design demand to liquid crystal indicator; The thickness of LGP thins down; If as the LED of module backlight attenuation then can reduce luminous flux thereupon; For guaranteeing module brightness backlight, still adopt thicker LED as light source usually, thereby the problem of LED thickness occurred greater than light guide plate.
For addressing the above problem; The utility model embodiment adopts special structural design; Make the thickness of light incident side of LGP greater than the thickness of light guide plate main body, LGP that so both can the main consuming body thinner thickness again can be so that the incident light of LED imports LGP as much as possible.Below will combine accompanying drawing, the utility model will be further described through specific embodiment.
Please with reference to Fig. 1～2, the main body of the described LGP of the utility model embodiment is one dull and stereotyped 11, and this flat board 11 is a rectangular shape base material, and its thickness is H2, can be laid with a plurality of sites usually in said dull and stereotyped 11, and light is carried out diffuse reflection.Be formed with a lug boss 12 that raises up at the light incident side place of this flat board 11; Said lug boss 12 has the outer face 121 with said dull and stereotyped 11 a lateral surface 111 flush, and said outer face 121 and said lateral surface 111 form the light-incident end of said LGP.
Preferably, in the present embodiment, the light-incident end of said LGP can further cut into zigzag through punching press, to receive the light from module backlight better.
Fig. 2 further shows the LED14 as light source, and LED14 is positioned at light-incident end one side of LGP, and the thickness of the thickness of LED14 and the light-incident end of said LGP is close.Fig. 2 also shows the incident direction of the incident light of LED14, shown in arrow among Fig. 2.Can find out that from Fig. 1, Fig. 2 the thickness H1 of the light-incident end of LGP is greater than the thickness H2 of flat board 11,, thereby make more incident light be able to be directed into LGP because lug boss 12 has increased the thickness of LGP incident light end face.
On said LGP, from the zone of light incident side to dull and stereotyped 11 transition, light leakage phenomena takes place easily, shown in the border circular areas among Fig. 2, light leak will cause light efficiency to reduce and reduce picture display effect.For reducing or avoid light leak, present embodiment further said dull and stereotyped 11 with the preset surface area of said lug boss 12 junctions be formed with can reflection ray reflecting layer 13, the light that possibly overflow from this zone in order to reflection.That is to say that the reflecting layer 13 of present embodiment is formed on by said lug boss 12 and carries out the transition on said dull and stereotyped 11 the part upper surface.Concrete, said reflecting layer 13 can form or form or form through attaching reflector plate through the coating reflecting material through vacuum ion sputtering technology plated film.
Fig. 3 shows the structure of a kind of side-light type module backlight, and according to order from top to bottom, this module backlight comprises end reflector plate 22, LGP 23, diffusion sheet 24, following prismatic lens 25 successively, goes up prismatic lens 26 and anti-dazzling screen 27.Said shadow shield 27 is a middle part engraved structure, gets into liquid crystal panel so that light can see through hollow-out parts, can also utilize said shadow shield 27 lighttight edges simultaneously, prevents or reduce the edge light leak of liquid crystal panel.In addition, can also utilize the edge of said shadow shield 27, the adhesive liquor crystal panel.
Module backlight shown in Figure 3 can also include framework 21.In addition, this module backlight can also comprise light source 20, and light source 20 is arranged on light-incident end one side of LGP 23.The another kind of scheme that can reach the above-mentioned light effusion effect of minimizing; It is the diffusion sheet 24 front ends increase black belt 28 in optical film material; Prevent at lozenges place effusion light; But this processing mode also can be lost about 5% optical efficiency, the light loss at lozenges place in addition, and total losses can reach about 10%.Present embodiment directly forms the reflecting layer on LGP, can be used again after the light reflection, thereby reduce or avoided light loss, has improved optical efficiency.
To sum up, through above structure, present embodiment can increase the thickness of light-incident end, makes it to be close with LED thickness, and therefore more light are able to get into LGP, have guaranteed the brightness of module backlight; And; Present embodiment is formed with reflecting layer 13 at the intersection of lug boss 12 and dull and stereotyped 11; The loss thereby the light that can reduce or avoid LGP is overflowed promotes the optical efficiency of LGP, can reduce simultaneously or the light avoiding overflowing to the harmful effect of liquid crystal display; Promote picture quality, improve the liquid crystal display effect.
Among the utility model embodiment, said lug boss 12 can be multiple shape.As a kind of preferred implementation, lug boss 12 can be like Fig. 1, the wedge shown in 2, and said wedge is that a right angle is trapezoidal along the cross section of LED 14 smooth incident directions.This wedge has an inclined-plane, the upper surface handing-over of said inclined-plane and said flat board, and said reflecting layer 13 is formed on the presumptive area that extends to the upper surface of said flat board from said inclined-plane.
Fig. 4～6 further show the more multiform shape that the said lug boss 12 of present embodiment can adopt; For example lug boss described in Fig. 4 12 is a triangle along the cross section of light incident direction; This lug boss also includes an inclined-plane, and this inclined-plane joins with the upper surface of flat board 11 mutually.Fig. 5, lug boss 12 shown in Figure 6 include a curved surface, join mutually with said dull and stereotyped 11 upper surface through this curved surface.
The shape that it is pointed out that lug boss 12 shown in Fig. 4～6 is not as the restriction to the utility model, and the said lug boss 12 of present embodiment can also adopt other more difformities, gives unnecessary details no longer one by one here.
Below further combine the process of LGP described in Fig. 7～9 explanation present embodiments.
Be subject to restrictions such as injection moulding board processing dimension and thickness, the conventional thin LGP is difficult to accomplish the production of ultra-thin large-size light-conducting plate, therefore, obtains said dull and stereotyped 11 through extrusion modling in the present embodiment.Fig. 7 shows and generates said dull and stereotyped 11 equipment and process: base material spool 31 is sent into base material; The base material spraying resinous material that 32 pairs of resin-coated unit are sent into, roll shaft 33 pressures are attached to lay the site through the site then, and the site is laid the back and is cured processing by curing apparatus 34; Can adopt ultraviolet ray (UV) to solidify or heat cure; Then carry out extrusion modling, cut then and obtain needed figure, as dull and stereotyped 11 by 35 pairs of base materials of pressing equipment.Waste material in the above-mentioned operation process is seen off through waste material spool 36.Lug boss described in the present embodiment 12 (like the wedge part) can obtain through injection mo(u)lding, utilizes optical glue with these two parts formation LGP that bonds together then.At last, the light-incident end of LGP is carried out punching press cut, form jagged light entrance face, thereby accomplish whole LGP manufacturing process.
Fig. 8 (A)～8 (E) further shows the semi-finished product/finished product sketch map that in each step of making said LGP, obtains; Wherein Fig. 8 (A) carries out the plate part that extrusion modling obtains to base material; Fig. 8 (B) carries out the lug boss that injection mo(u)lding obtains to base material; Fig. 8 (C) is flat board and the lug boss that bonds together through optical glue, and Fig. 8 (D) is that further sputter forms the reflecting layer, and Fig. 8 (E) carries out punching press to light-incident end to cut and be shaped to the zigzag light entrance face.
Fig. 9 further shows the operation sketch map that sputtering technology obtains the reflecting layer; At first utilize the non-coating district of 43 pairs of LGPs 10 of veil to cover; Then LGP is placed in the vapor deposition chamber 41; The angle of adjustment sputtering source 42, aligning needs the position of coating to carry out coating film treatment, obtains the reflecting layer.
Based on above-mentioned LGP, present embodiment also provides a kind of side-light type module backlight that uses this LGP, and this side-light type module backlight can also comprise at least one light source, and said module lamp backlight is arranged on the side of said LGP.
Here, this side-light type module backlight can also comprise the backboard that is arranged on said LGP below, and the upper frame that is arranged on said LGP top; Wherein, between said backboard and said LGP, also be provided with end reflector plate, between said LGP and said upper frame, also be provided with optical film material.Said optical film material specifically can comprise diffusion sheet, light prismatic lens etc.
At last, present embodiment also provides a kind of liquid crystal indicator, the product or the parts of any needs module backlight such as this liquid crystal indicator has can LCD, LCD TV, mobile phone, panel computer, DPF.This liquid crystal indicator has generally included a liquid crystal panel, also includes above-described side-light type module backlight simultaneously.
Can find out that from the above the utility model embodiment utilization is formed on the reflecting layer on the LGP, has improved optical efficiency effectively, the light loss that reduces or avoid causing to dull and stereotyped transition region by lug boss, the while can also promote the picture quality of module backlight; And the utility model embodiment also adopts the lug boss and the dull and stereotyped mode of machine-shaping respectively of main body of LGP, can make the dimensional thickness of LGP all can obtain breaking through so that the making of ultra-thin light guide board no longer sticks to injection moulding board capabilities limits.
Claims (10)
1. LGP; It is characterized in that; The main body of said LGP is a flat board; Light incident side place at said flat board is formed with a lug boss, and said lug boss has the outer face with a lateral surface flush of said flat board, and said outer face and said lateral surface form the light-incident end of said LGP;
Wherein, the preset surface area of said flat board and said lug boss junction is formed with the reflecting layer.
2. LGP as claimed in claim 1 is characterized in that, said lug boss is a wedge, and said wedge has an inclined-plane, the upper surface handing-over of said inclined-plane and said flat board;
The presumptive area that extends to the upper surface of said flat board from said inclined-plane is formed with said reflecting layer.
3. LGP as claimed in claim 2 is characterized in that,
Said wedge is trapezoidal along the cross section of said smooth incident direction.
4. LGP as claimed in claim 2 is characterized in that, said dull and stereotyped through extrusion modling, said wedge is through injection mo(u)lding, and said wedge and said flat board bond together through optical glue.
5. LGP as claimed in claim 1 is characterized in that, said reflecting layer is the coating that forms through vacuum ion sputtering technology.
6. LGP as claimed in claim 1 is characterized in that said light-incident end cuts into zigzag through punching press.
7. LGP as claimed in claim 1 is characterized in that, is laid with a plurality of sites in the said flat board.
8. a side-light type module backlight comprises like each described LGP of claim 1 to 7, also comprises at least one module lamp backlight, and said module lamp backlight is arranged on the side of said LGP.
9. side-light type as claimed in claim 8 module backlight is characterized in that, also comprises the backboard that is arranged on said LGP below, and the upper frame that is arranged on said LGP top;
Wherein, between said backboard and said LGP, also be provided with end reflector plate, between said LGP and said upper frame, also be provided with optical film material.
10. a liquid crystal indicator comprises display panels, it is characterized in that, also comprises like claim 8 or 9 described side-light types module backlight.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012201584961U CN202561652U (en) | 2012-04-13 | 2012-04-13 | Light guide plate, edge-lit backlight module and liquid crystal display device |
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| CN2012201584961U CN202561652U (en) | 2012-04-13 | 2012-04-13 | Light guide plate, edge-lit backlight module and liquid crystal display device |
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| CN202561652U true CN202561652U (en) | 2012-11-28 |
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| CN2012201584961U Expired - Lifetime CN202561652U (en) | 2012-04-13 | 2012-04-13 | Light guide plate, edge-lit backlight module and liquid crystal display device |
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| CN103091766A (en) * | 2013-01-24 | 2013-05-08 | 北京京东方光电科技有限公司 | Light guide device and backlight unit and liquid crystal display device using the same |
| CN103257391A (en) * | 2013-01-08 | 2013-08-21 | 友达光电股份有限公司 | Light guide plate and backlight module |
| CN103487874A (en) * | 2013-10-14 | 2014-01-01 | 博昱科技（丹阳）有限公司 | Production method for light guide sheet containing thickness gradually-changing region |
| CN103869407A (en) * | 2014-03-07 | 2014-06-18 | 合肥铨励光电科技有限公司 | Cold/hot rolling thin film type highlighting light guide plate and roll-to-roll preparation method thereof |
| CN103900031A (en) * | 2012-12-27 | 2014-07-02 | 厦门天马微电子有限公司 | Light guide device for liquid crystal display |
| CN103901525A (en) * | 2012-12-28 | 2014-07-02 | 鸿富锦精密工业（深圳）有限公司 | Light guide plate, backlight module and liquid crystal display device |
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- 2012-04-13 CN CN2012201584961U patent/CN202561652U/en not_active Expired - Lifetime
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| CN103091766A (en) * | 2013-01-24 | 2013-05-08 | 北京京东方光电科技有限公司 | Light guide device and backlight unit and liquid crystal display device using the same |
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| CN103487874B (en) * | 2013-10-14 | 2015-08-12 | 博昱科技（丹阳）有限公司 | A kind of method for making of the light guide sheet containing gradient thickness region |
| CN103487874A (en) * | 2013-10-14 | 2014-01-01 | 博昱科技（丹阳）有限公司 | Production method for light guide sheet containing thickness gradually-changing region |
| CN103869407A (en) * | 2014-03-07 | 2014-06-18 | 合肥铨励光电科技有限公司 | Cold/hot rolling thin film type highlighting light guide plate and roll-to-roll preparation method thereof |
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| US10007046B2 (en) | 2015-08-14 | 2018-06-26 | Radiant Opto-Electronics (Suzhou) Co., Ltd. | Light guide film, backlight module and display device having the same |
| TWI571661B (en) * | 2015-08-14 | 2017-02-21 | A light guide film, a backlight module, and a display device | |
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| CN105549148A (en) * | 2016-02-22 | 2016-05-04 | 昆山市诚泰电气股份有限公司 | Light guide plate and application thereof |
| CN106249481A (en) * | 2016-09-18 | 2016-12-21 | 青岛海信电器股份有限公司 | A kind of backlight module and the preparation method of light guide plate |
| CN106249481B (en) * | 2016-09-18 | 2020-05-05 | 青岛海信电器股份有限公司 | Backlight module and preparation method of light guide plate |
| CN107561627A (en) * | 2017-08-24 | 2018-01-09 | 四川龙华光电薄膜股份有限公司 | Light guiding film |
| 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 |
| CN110244490A (en) * | 2019-06-14 | 2019-09-17 | 武汉华星光电技术有限公司 | Backlight module and display device |
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| 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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