CN202421530U - Light guide board, backlight module and liquid crystal display - Google Patents
Light guide board, backlight module and liquid crystal display Download PDFInfo
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- CN202421530U CN202421530U CN 201220022184 CN201220022184U CN202421530U CN 202421530 U CN202421530 U CN 202421530U CN 201220022184 CN201220022184 CN 201220022184 CN 201220022184 U CN201220022184 U CN 201220022184U CN 202421530 U CN202421530 U CN 202421530U
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- lgp
- base material
- prism
- backlight module
- light guide
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Abstract
The utility model provides a light guide board, a backlight module and a liquid crystal display, belonging to the field of a backlight source of a liquid crystal display. The light guide board comprises a light guide board substrate; the light guide board substrate comprises an incidence face for receiving light beams, a bottom face connected with the incidence face, and an emergence face which is opposite to the bottom face; and the light guide board further comprises a plurality of lattice points on the bottom face, a prism structure formed on the emergence face, and a plurality of grains covering the prism structure. According to the backlight module provided by the utility model, the structure of the backlight module is simplified; the thickness of the backlight module is reduced; and the light intensity of the backlight module is improved. Furthermore, the backlight module provided by the utility model is good for realizing the ultrathin liquid crystal display.
Description
Technical field
The utility model relates to the Backlight For Liquid Crystal Display Panels field, is meant a kind of LGP, module backlight and LCD especially.
Background technology
Because the liquid crystal material itself in the panel of LCD does not have the characteristics of luminescence; Therefore, for reaching display effect, a planar light source device is provided for the LCD panel; Like module backlight, its function is to panel of LCD the area source that briliancy is abundant and be evenly distributed to be provided.
As shown in Figure 1; Existing general module backlight mainly is made up of backboard 1, LGP 2, time prism diaphragm 3, last prism diaphragm 4, diffusion barrier sheet 5 and glue frame 6; Can find out that diaphragm framework wherein is following prism diaphragm 3, last prism diaphragm 4 and diffusion barrier sheet 5, the use of these diaphragms; Make the light by LGP 2 outgoing can become evenly, brightness reinforcement on perpendicular to the direction of LGP 2.
But problems such as meanwhile, that the use of these diaphragms causes easily is water stain, fold have a strong impact on display effect.When light passed through these diaphragms by LGP, the luminance loss was very big, in order to improve backlight illumination, must increase power consumption, caused the waste of the energy.
The utility model content
The technical matters that the utility model will solve provides a kind of LGP, module backlight and LCD, can simplify the structure of module backlight, reduces the thickness of module backlight, improves the brightness of module backlight.
For solving the problems of the technologies described above, the embodiment of the utility model provides technical scheme following:
On the one hand, a kind of LGP is provided, said LGP comprises the LGP base material, and said LGP base material comprises bottom surface that the plane of incidence in order to receiving beam, links to each other with the plane of incidence and an exit facet relative with the bottom surface, and said LGP also comprises:
Be formed on a plurality of sites on the said bottom surface;
Be formed on the prism structure on the said exit facet;
Cover a plurality of particles of said prism structure.
Further, said site is white site.
Further, said a plurality of white sites are and are arranged side by side, near the plane of incidence of said LGP base material on direction away from the plane of incidence of said LGP base material, the diameter of said white site increases gradually.
Further, said particle is the spherical shape glass particle of different-diameter.
Further, said prism structure is made up of ultraviolet cured adhesive.
Further, said prism structure comprises:
Be formed on the first prism portion that forms by first ultraviolet cured adhesive on the said exit facet;
Be formed in the said first prism portion, with the suitable second prism portion that forms by second ultraviolet cured adhesive of the said first prism portion.
Further, the refractive index of the said first prism portion is greater than the refractive index of the said second prism portion.
The utility model embodiment also provides a kind of module backlight, comprises above-mentioned LGP.
The utility model embodiment also provides a kind of LCD, comprises above-mentioned module backlight.
The embodiment of the utility model has following beneficial effect:
In the such scheme,, make LGP have the effect of light harvesting and diffusion, simplified packaging technology through prism structure and particle are set on the LGP base material.The module backlight that adopts this LGP to process owing to cancelled diaphragm structure, has reduced the problems such as water stain, fold that cause because of diaphragm, has also reduced the cost of module backlight simultaneously.In addition, because diaphragm also will lose a part of light, the cancellation diaphragm can improve brightness backlight, and then improves whole brightness, thereby reduces the power consumption of module backlight; Further, therefore the thickness of module backlight also reduce, and can realize ultra-thinization of LCD.
Description of drawings
Fig. 1 is the structural representation of module backlight of the prior art;
Fig. 2 is the structural representation of the LGP of the utility model embodiment;
Fig. 3 is the synoptic diagram of arranging of the white site of the utility model embodiment;
Fig. 4 is the structural representation of the module backlight of the utility model embodiment.
Embodiment
Technical matters, technical scheme and the advantage that will solve for the embodiment that makes the utility model are clearer, will combine accompanying drawing and specific embodiment to be described in detail below.
The embodiment of the utility model is directed against in the prior art in order to guarantee brightness; The bigger problem of power consumption that causes module backlight; A kind of LGP, module backlight and LCD are provided; Can reduce the power consumption of module backlight, improve the brightness of module backlight, and help realizing ultra-thinization of LCD.
Fig. 2 is the structural representation of the LGP of the utility model embodiment, and is as shown in Figure 2, the LGP of the utility model; Be applied in the module backlight; Comprise a LGP base material 12, LGP base material 12 comprises bottom surface that the plane of incidence in order to receiving beam, links to each other with the plane of incidence and an exit facet relative with the bottom surface, further; As shown in Figure 2, this LGP also comprises:
Be formed on a plurality of sites 11 on LGP base material 12 bottom surfaces;
Be formed on the prism structure on LGP base material 12 exit facets;
Cover a plurality of particles 15 of prism structure.
Wherein, the one side of prism structure face away from light guide base material 12 is a plane, and a plurality of particles 15 cover on this flat surface.
Wherein, site 11 is white site.Further; As shown in Figure 3; A plurality of white sites 11 are on the bottom surface of LGP base material 12 and are arranged side by side; From near the plane of incidence of LGP base material 12 on direction away from the plane of incidence of LGP base material 12, the diameter of white site 11 increases gradually, can make the light that penetrates LGP base material 12 more even like this.
Further, particle 15 is the spherical shape glass particle of different-diameter.
Further, prism structure is made up of ultraviolet cured adhesive.Prism structure comprises:
Be formed on the first prism portion 13 that forms by first ultraviolet cured adhesive on LGP base material 12 exit facets;
Be formed in the first prism portion 13, with the suitable second prism portion 14 that forms by second ultraviolet cured adhesive of the first prism portion 13.
The first prism portion 13 and the second prism portion 14 play in the effect perpendicular to the direction light harvesting of LGP base material 12 exit facets jointly, in order to improve the transmitance of light, require n
b＜n
a, wherein, n
aBe the refractive index of the first prism portion 13, n
bIt is the refractive index of the second prism portion 14.Further, for the light harvesting effect that makes prism structure increases, require | n
a-n
b| be the bigger the better.
Wherein, The one side of the second prism portion, 14 face away from light guide base materials 12 is a flat surface; The flat surface of the second prism portion 14 is provided with the spherical shape glass particle 15 of a plurality of different-diameters, has covered whole flat surface, can satisfy the double effects of light harvesting and diffusion.
Among the utility model embodiment, the light that LED source sends gets into the LGP base material from the plane of incidence, in the LGP base material, total reflection takes place, to LGP base material internal communication.When light was incident upon white site, because white site is opaque, light generation diffuse reflection was to all directions emission scattering, so that bright dipping is even.Behind the prism structure of the light of homogenising via UV glue composition; Direction perpendicular to LGP base material exit facet strengthens; After behind the glass particle of different size; Because glass particle has the double action of light harvesting and diffusion, thus light LGP base material exit facet spread more even, thereby make the LGP of the utility model possess the function of diaphragm framework in the existing structure.
The manufacture craft of facing the LGP of the utility model is down introduced: at first adopt technologies such as printing ink or laser printing to form white site 11 in the bottom surface of LGP base material 12; Be illustrated in figure 3 as the synoptic diagram of arranging of white site 11; Wherein, the below of Fig. 3 is near the LED source place, can find out; A plurality of white sites 11 are on the bottom surface of LGP base material 12 and are arranged side by side; From near LGP base material 12 advance light on the direction of entering the light place away from LGP base material 12, the diameter of white site 11 increases gradually, can make the light that injects LGP base material 12 more even like this.White site 11 makes the light that incides in the LGP base material 12 shine the exit facet of LGP base material 12 uniformly through white site 11; Next UV curing glue a (i.e. first ultraviolet cured adhesive) on the exit facet of LGP base material 12; Process one deck prism structure; Use UV glue b (i.e. second ultraviolet cured adhesive) that the gap of prism structure is filled up then; Form a flat surface, UV solidifies glue a, b to be played in the effect perpendicular to the direction light harvesting of LGP base material 12 exit facets jointly.In order to improve the transmitance of light, require n
b＜n
a, wherein, n
aBe the refractive index of the first prism portion 13, n
bIt is the refractive index of the second prism portion 14.Further, for the light harvesting effect that makes prism structure increases, require | n
a-n
b| be the bigger the better; Particularly, UV solidifies glue a can select high-index material for use, and refractive index is 1.625, and UV solidifies glue b can select UV glue material commonly used for use, and refractive index is 1.54.At last, need form the spherical shape glass particle 15 of different size, satisfy the double effects of light harvesting and diffusion at this flat surface.
The utility model makes LGP have the effect of light harvesting and diffusion through prism structure and glass particle are set on the LGP base material, has simplified packaging technology.The module backlight that adopts this LGP to process owing to cancelled diaphragm structure, has reduced the problems such as water stain, fold that cause because of diaphragm, has also reduced the cost of module backlight simultaneously.In addition, because diaphragm also will lose a part of light, the cancellation diaphragm can improve brightness backlight, and then improves whole brightness, thereby reduces the power consumption of module backlight; Further, therefore the thickness of module backlight also reduce, and can realize ultra-thinization of LCD.
Fig. 4 is the structural representation of the module backlight of the utility model embodiment, and is as shown in Figure 4, and present embodiment comprises: backboard 21; Be positioned at the LGP 22 of backboard 21 upsides; Be positioned at the diaphragm 23 of LGP 22 upsides; Be positioned at the glue frame 24 in diaphragm 23 outsides.
Like Fig. 2 and shown in Figure 3, LGP 22 comprises:
Be formed on a plurality of sites 11 on LGP base material 12 bottom surfaces;
Be formed on the prism structure on LGP base material 12 exit facets;
Cover a plurality of particles 15 of prism structure.
Wherein, the one side of prism structure face away from light guide base material 12 is a flat surface, and a plurality of particles 15 cover on this flat surface.
Wherein, site 11 is white site.Further; As shown in Figure 3; A plurality of white sites 11 are on the bottom surface of LGP base material 12 and are arranged side by side; From near the plane of incidence of LGP base material 12 on direction away from the plane of incidence of LGP base material 12, the diameter of white site 11 increases gradually, can make the light that penetrates LGP base material 12 more even like this.
Further, particle 15 is the spherical shape glass particle of different-diameter.
Further, prism structure is made up of ultraviolet cured adhesive.Prism structure comprises:
Be formed on the first prism portion 13 that forms by first ultraviolet cured adhesive on LGP base material 12 exit facets;
Be formed in the first prism portion 13, with the suitable second prism portion 14 that forms by second ultraviolet cured adhesive of the first prism portion 13.
The first prism portion 13 and the second prism portion 14 play in the effect perpendicular to the direction light harvesting of LGP base material 12 exit facets jointly, in order to improve the transmitance of light, require n
b＜n
a, wherein, n
aBe the refractive index of the first prism portion 13, n
bIt is the refractive index of the second prism portion 14.Further, for the light harvesting effect that makes prism structure increases, require | n
a-n
b| be the bigger the better.
Wherein, The one side of the second prism portion, 14 face away from light guide base materials 12 is a flat surface; The flat surface of the second prism portion 14 is provided with the spherical shape glass particle 15 of a plurality of different-diameters, has covered whole flat surface, can satisfy the double effects of light harvesting and diffusion.
As shown in Figure 2; Because the superiors of LGP 22 are the spherical shape glass particle 15 of a plurality of different-diameters; For the surface that guarantees LGP 22 is that structure smooth and LGP 22 is not damaged in process of production; Also a diaphragm 23 need be set on particle 15, diaphragm 23 is processed for transparent organic material.
The utility model makes LGP have the effect of light harvesting and diffusion through prism structure and glass particle are set on the LGP base material, has simplified packaging technology.The module backlight that adopts this LGP to process owing to cancelled diaphragm structure, has reduced the problems such as water stain, fold that cause because of diaphragm, has also reduced the cost of module backlight simultaneously.In addition, because diaphragm also will lose a part of light, the cancellation diaphragm can improve brightness backlight, and then improves whole brightness, thereby reduces the power consumption of module backlight; Further, therefore the thickness of module backlight also reduce, and can realize ultra-thinization of LCD.
The utility model also provides a kind of LCD, comprises above-mentioned module backlight.
The above is the preferred implementation of the utility model; Should be understood that; For those skilled in the art; Under the prerequisite that does not break away from the said principle of the utility model, can also make some improvement and retouching, these improvement and retouching also should be regarded as the protection domain of the utility model.
Claims (9)
1. a LGP comprises the LGP base material, and said LGP base material comprises bottom surface that the plane of incidence in order to receiving beam, links to each other with the plane of incidence and an exit facet relative with the bottom surface, it is characterized in that said LGP also comprises:
Be formed on a plurality of sites on the said bottom surface;
Be formed on the prism structure on the said exit facet;
Cover a plurality of particles of said prism structure.
2. LGP according to claim 1 is characterized in that, said site is white site.
3. LGP according to claim 2; It is characterized in that; Said a plurality of white site is and is arranged side by side, near the plane of incidence of said LGP base material on direction away from the plane of incidence of said LGP base material, the diameter of said white site increases gradually.
4. LGP according to claim 1 is characterized in that, said particle is the spherical shape glass particle of different-diameter.
5. LGP according to claim 1 is characterized in that said prism structure is made up of ultraviolet cured adhesive.
6. LGP according to claim 5 is characterized in that, said prism structure comprises:
Be formed on the first prism portion that forms by first ultraviolet cured adhesive on the said exit facet;
Be formed in the said first prism portion, with the suitable second prism portion that forms by second ultraviolet cured adhesive of the said first prism portion.
7. LGP according to claim 6 is characterized in that the refractive index of the said first prism portion is greater than the refractive index of the said second prism portion.
8. a module backlight is characterized in that, comprises like each described LGP among the claim 1-7.
9. a LCD is characterized in that, comprises module backlight as claimed in claim 8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220022184 CN202421530U (en) | 2012-01-17 | 2012-01-17 | Light guide board, backlight module and liquid crystal display |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220022184 CN202421530U (en) | 2012-01-17 | 2012-01-17 | Light guide board, backlight module and liquid crystal display |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202421530U true CN202421530U (en) | 2012-09-05 |
Family
ID=46746279
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220022184 Expired - Lifetime CN202421530U (en) | 2012-01-17 | 2012-01-17 | Light guide board, backlight module and liquid crystal display |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202421530U (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103744229A (en) * | 2013-12-12 | 2014-04-23 | 中国电子科技集团公司第五十五研究所 | Backlight angle control method based on refraction index matching |
| CN105511164A (en) * | 2016-02-03 | 2016-04-20 | 京东方科技集团股份有限公司 | Backlight module and fabrication method thereof and display device |
| CN105572791A (en) * | 2016-01-27 | 2016-05-11 | 深圳市德仓科技有限公司 | Composite light guide board and backlight module with same |
| CN106500007A (en) * | 2016-11-24 | 2017-03-15 | 成都佳美嘉科技有限公司 | Luminescent riverway warning illuminating lamp |
| CN111487711A (en) * | 2020-05-29 | 2020-08-04 | 北京小米移动软件有限公司 | Optical component, backlight module, electronic equipment and manufacturing method of optical component |
| WO2022000746A1 (en) * | 2020-06-29 | 2022-01-06 | 武汉华星光电技术有限公司 | Light guide plate, backlight module, and liquid crystal display module |
-
2012
- 2012-01-17 CN CN 201220022184 patent/CN202421530U/en not_active Expired - Lifetime
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103744229A (en) * | 2013-12-12 | 2014-04-23 | 中国电子科技集团公司第五十五研究所 | Backlight angle control method based on refraction index matching |
| CN105572791A (en) * | 2016-01-27 | 2016-05-11 | 深圳市德仓科技有限公司 | Composite light guide board and backlight module with same |
| CN105511164A (en) * | 2016-02-03 | 2016-04-20 | 京东方科技集团股份有限公司 | Backlight module and fabrication method thereof and display device |
| CN106500007A (en) * | 2016-11-24 | 2017-03-15 | 成都佳美嘉科技有限公司 | Luminescent riverway warning illuminating lamp |
| CN111487711A (en) * | 2020-05-29 | 2020-08-04 | 北京小米移动软件有限公司 | Optical component, backlight module, electronic equipment and manufacturing method of optical component |
| EP3916296A1 (en) * | 2020-05-29 | 2021-12-01 | Beijing Xiaomi Mobile Software Co., Ltd. | Optical component, backlight module, electronic equipment, and method for manufacturing optical component |
| US11474291B2 (en) | 2020-05-29 | 2022-10-18 | Beijing Xiaomi Mobile Software Co., Ltd. | Optical component, backlight module, electronic equipment, and method for manufacturing optical component |
| WO2022000746A1 (en) * | 2020-06-29 | 2022-01-06 | 武汉华星光电技术有限公司 | Light guide plate, backlight module, and liquid crystal display module |
| US11852920B2 (en) | 2020-06-29 | 2023-12-26 | Wuhan China Star Optoelectronics Technology Co., Ltd. | Light guide plate, backlight module, and liquid crystal display module |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20120905 |