CN202600176U - Light guiding plate, backlight module and liquid crystal display - Google Patents
Light guiding plate, backlight module and liquid crystal display Download PDFInfo
- Publication number
- CN202600176U CN202600176U CN 201220151819 CN201220151819U CN202600176U CN 202600176 U CN202600176 U CN 202600176U CN 201220151819 CN201220151819 CN 201220151819 CN 201220151819 U CN201220151819 U CN 201220151819U CN 202600176 U CN202600176 U CN 202600176U
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Abstract
The utility model provides a light guiding plate, comprising a light guiding plate body. One surface of the light guiding plate body is a light emitting surface. A truncated pyramid-like body is arranged on the light emitting surface. The truncated pyramid-like body comprises pyramid surfaces and a top surface. A chamfer angle is formed between every two adjacent pyramid surfaces. The light guiding plate has good light collecting effect and good light uniformizing effect and meanwhile enhances the brightness of the backlight module, further increasing the brightness of a liquid crystal display. In addition, the thickness of the backlight module is therefore reduced, making the liquid crystal display ultrathin.
Description
Technical field
The utility model belongs to the LCD Technology field, the LCD that is specifically related to a kind of LGP, module backlight and comprises this module backlight.
Background technology
Module backlight (Back Light Module) is one of key part and component of panel of LCD (Liquid Crystal Display Panel); Because liquid crystal itself is not luminous; The function of module backlight promptly is well-off brightness and the light source that is evenly distributed; Module backlight mainly is for liquid crystal panel provides evenly, the light source of high brightness; Ultimate principle is with point or linear light sources commonly used, sees through the area source product that effective optical mechanism changes into high brightness and homogeneous briliancy, makes normally show image of liquid crystal panel.At present, the liquid crystal backlight on the market mainly contains two types backlight of the backlight and CCFL (Cold Cathode Fluorescent Lamp, cold-cathode fluorescence lamp) of LED (Light Emitting Diode, light emitting diode).In comparison, LED-backlit has great advantage in power consumption and material environmental protection, and brightness uniformity is also higher relatively and volume can be done thinlyyer.Along with development of technology, LED-backlit is towards the trend development of lightness, slimming, wide colour gamut, high brightness, low-power consumption.
Module backlight is mainly assembled by assemblies such as light emitting source (Light Source), reflector plate (Reflector), LGP (Light Guide Plate), blooming piece and housings, and wherein blooming piece and LGP are topmost technology and cost place in the module backlight.At present; Usually with a plurality of blooming piece component film horse structures; The structure of diaphragm framework is the form of diffusion sheet (Diffusion Sheet)+horizon prism sheet (Prism Sheet (H))+vertical prismatic lens (Prism Sheet (V)), also can be screening glass (Protect sheet)+prismatic lens (Prism (H))+diffusion sheet (Diffusion) and waits other forms.Wherein, the effect of diffusion sheet is that to LCD provides a uniform surface light source effect of prismatic lens (be generally two, and become vertical angle to place) is the astigmatism that from diffusion sheet, sends is gathered together, and improves the brightness of module backlight with this.
In module backlight, the radiation direction that the light-guide plate guides light emitting source sends, light be through blooming pieces such as diffusion sheets, prismatic lens, makes that the light by the LGP outgoing can become evenly, brightness reinforcement on perpendicular to the direction of LGP.But meanwhile, these blooming pieces are easy to generate watermark (water stain), sheet fold bad phenomenon such as (sheet wrinkle), thereby the display effect of having a strong impact on; And, when light can lose a part of luminous energy by LGP during through blooming piece, cause the backlight illumination loss very big, and then influence the brightness of LCD, and just must the increase power consumption, thereby must cause the waste of the energy in order to improve backlight illumination.Simultaneously, the use of these blooming pieces realizes that for LCD TV slimming also has adverse effect.
Progress along with backlight technology; The integral type LGP of an integral body has appearred LGP is become with the diaphragm architecture collection at present; The exiting surface of this LGP is provided with the microstructure that structure is pyramid; Realize guiding, diffusion and the light harvesting of light through microstructure, but also eliminated watermark (water stain), the sheet fold bad phenomenon such as (sheet wrinkle) that causes by blooming piece; But microstructure is the structure of pyramid, and is less through the light scope of its outgoing, and the brightness of the sharp corner on pyramid top enhancing, forms bright spot at the cusp place, causes LGP that the diffusion and the light harvesting effect of light are reduced.
The utility model content
The utility model technical matters to be solved is to the above-mentioned deficiency that exists in the prior art; The LCD that a kind of LGP, module backlight is provided and comprises this module backlight; This LGP has good light harvesting and equal light effect; Improve the brightness of module backlight simultaneously, and then improved the brightness of LCD; And therefore the thickness of module backlight also reduce, and can realize ultra-thinization of LCD.
The technical scheme that solution the utility model technical matters is done is that this LGP comprises light conducting plate body; The one side of said light conducting plate body is an exiting surface; Wherein, Said exiting surface type of being provided with pyramid stage body, said type of pyramid stage body includes pyramidal surface and an end face, is formed with chamfering between every adjacent two pyramidal surfaces.
Preferably, said each chamfering is a rounded corner.
Preferably; Said type of pyramid stage body type of being orthopyramid stage body; The shape of each pyramidal surface of said type of orthopyramid stage body is identical; Equal and opposite in direction, and each pyramidal surface be shaped as isosceles triangle, the intersection point on the both sides in the said isosceles triangle except that the base contacts with the end face of such orthopyramid stage body.
Further preferably, said each pyramidal surface is shaped as isosceles right triangle.
Preferably, perhaps class positive eight-frustum body of positive rectangular pyramid stage body of said type orthopyramid stage body be type or type positive hexagonal pyramid stage body.
More preferably, said end face for can and each pyramidal surface between the curved surface that seamlessly transits.
Preferably, the identical and equal and opposite in direction of shape of said each type pyramid stage body, and a type pyramid stage body is arranged side by side on said exiting surface and is delegation or multirow.
The base of the class pyramid stage body that further preferably, each base difference of each type pyramid stage body is adjacent with it overlaps.
A kind of module backlight comprises above-mentioned described LGP.
A kind of LCD comprises above-mentioned described module backlight.
The beneficial effect of the utility model is: this LGP has good light harvesting and equal light effect, has improved the brightness of module backlight simultaneously, and then has improved the brightness of LCD; And, make the thickness of module backlight also therefore reduce, can realize ultra-thinization of LCD.
Description of drawings
Fig. 1 is the structural representation of LGP among the utility model embodiment 1;
Fig. 2 is the structural representation of single type of positive rectangular pyramid stage body on the LGP among Fig. 1;
Fig. 3 is the structural representation of LGP among the utility model embodiment 2;
Fig. 4 is the structural representation of single type of positive hexagonal pyramid stage body on the LGP among Fig. 3.
Among the figure: the 1-exiting surface; The 2-incidence surface; 3-class pyramid stage body; The 10-chamfering; 11-rib vertebra face; The 12-bevel edge; The 13-base; The 14-end face.
Embodiment
For making those skilled in the art understand the technical scheme of the utility model better, the utility model LGP, module backlight and the LCD that comprises this module backlight are described in further detail below in conjunction with accompanying drawing and embodiment.
A kind of LGP; Comprise light conducting plate body; The one side of said light conducting plate body is an exiting surface, said exiting surface type of being provided with pyramid stage body, and the shape of said type of pyramid stage body is similar with the shape of pyramid stage body; Said type of pyramid stage body includes pyramidal surface and an end face, is formed with chamfering between every adjacent two pyramidal surfaces.
Preferably, said each chamfering is a rounded corner.
Preferably; Said type of pyramid stage body type of being orthopyramid stage body; The shape of each pyramidal surface of said type of orthopyramid stage body is identical; Equal and opposite in direction, and each pyramidal surface be shaped as isosceles triangle, the intersection point on the both sides in the said isosceles triangle except that the base contacts with the end face of such orthopyramid stage body.
Further preferably, said each pyramidal surface is shaped as isosceles right triangle.
Preferably, perhaps class positive eight-frustum body of positive rectangular pyramid stage body of said type orthopyramid stage body be type or type positive hexagonal pyramid stage body.
More preferably, said end face for can and each pyramidal surface between the curved surface that seamlessly transits.
Preferably, the identical and equal and opposite in direction of shape of said each type pyramid stage body, and a type pyramid stage body is arranged side by side on said exiting surface and is delegation or multirow.
The base of the class pyramid stage body that further preferably, each base difference of each type pyramid stage body is adjacent with it overlaps.
A kind of module backlight comprises above-mentioned described LGP.
A kind of LCD comprises above-mentioned described module backlight.
Embodiment 1:
As shown in Figure 1, in the present embodiment, this LGP comprises light conducting plate body, and light conducting plate body one side up is an exiting surface 1, and a side that is connected with exiting surface 1 is an incidence surface 2.Exiting surface 1 is provided with the class pyramid stage body 3 of a plurality of protrusions.
Preferably, type positive N pyramid stage body (N＞2) of pyramid stage body 3 types of being.
More preferably, type positive 2N pyramid stage body (N＞1) of pyramid stage body 3 types of being.
As shown in Figure 2, in the present embodiment, the said type of positive rectangular pyramid stage body of positive 2N pyramid stage body type of being.The shape of said type of positive rectangular pyramid stage body is similar with the shape of positive rectangular pyramid stage body; Comprise four shapes identical and equal-sized pyramidal surface 11 and end faces 14; Both differences are; Be formed with a chamfering 10 between every adjacent two pyramidal surfaces of such positive rectangular pyramid stage body, so that can seamlessly transit between adjacent two pyramidal surfaces.Each pyramidal surface be shaped as isosceles right triangle, two right-angle sides of said isosceles right triangle overlap with bevel edge 12, and the summit at right angle contacts with 14 of the end faces of such positive rectangular pyramid stage body in the isosceles right triangle.
Vertex point through two right-angle sides between each pyramidal surface and the end face 14 contacts; Because the right-angle side direction is vertical; Thereby can light further be compiled to LGP, the brightness of LGP is increased, play the effect of the horizon prism sheet with the vertical prismatic lens that become 90 ° of arrangements in the prior art; Simultaneously, the up-small and down-big shape of such positive rectangular pyramid stage body has guaranteed the effect of light to axial light harvesting.Promptly; Through the class pyramid stage body of protrusion is set on the LGP exiting surface; Make LGP both play guiding function (effect of former LGP), also played light harvesting and diffusion (effect of former diffusion sheet and prismatic lens) simultaneously, avoided the loss of blooming piece luminous energy to light; Improve the brightness of module backlight, and then improved the brightness of LCD; And therefore the thickness of module backlight also reduce, and can realize ultra-thinization of LCD.
In the present embodiment, chamfering 10 is a rounded corner, said rounded corner is isometric to the two pyramidal surface directions that are attached thereto, etc. radian ground extend a segment distance and form the curved surface of circular arc, the pyramidal surface 11 that said rounded corner is adjacent forms bevel edges 12.Forming process according to above-mentioned rounded corner can learn, when two bevel edges 12 cross in the position of end face 14, two bevel edge 12 equal in length on the same pyramidal surface, each pyramidal surface be shaped as isosceles triangle.
Preferably, when two bevel edges 12 cross the angle that forms when being the right angle in the position of end face 14, the light harvesting effect of LGP is preferable.
The end face 14 of said type positive rectangular pyramid stage body be shaped as positive four arc limit curved surfaces, the top margin of said positive four arc limit curved surfaces and said each rounded corner seamlessly transits.The structure of this rounded corner 10 and end face 14 can be avoided the too high situation of brightness occurring along the axial a certain point of LGP, and has guaranteed the equal light effect of the horizontal direction of LGP.
In the present embodiment, be the bottom surface with exiting surface 1 relative one side in the light conducting plate body, said bottom surface also is provided with the optics site; The interference of light phenomenon can be destroyed in said optics site, and the total reflection of the light that gets into LGP is destroyed, and therefore can change radiation direction; Can light source evenly be guided into area source; Thereby light can be shone on the exiting surface 1 of LGP, guarantee needed light direction, also have the effect of even light simultaneously.
In the present embodiment, the identical and equal and opposite in direction of shape of each type pyramid stage body, said type of positive rectangular pyramid stage body is arranged side by side into multirow on said exiting surface 1.Preferably, four bases 13 of single type of positive rectangular pyramid stage body overlap on the base 13 of the adjacent with it positive rectangular pyramid stage body of other types respectively.
In the present embodiment, light conducting plate body is polymethylmethacrylate (Poly Methyl Methacrylate is called for short PMMA, also is acrylic or organic glass) with a type orthopyramid stage body and processes, and in actual process, can process through mould is one-body molded.
Need to prove: " up " in the present embodiment be just with reference to the direction of accompanying drawing, and it goes without doing limits term.Certainly, incidence surface is some or a plurality of the getting final product in four sides that are connected with exiting surface in the present embodiment, explanation for ease, and in the present embodiment, the side of incidence surface 2 for being connected with exiting surface 1.
A kind of module backlight comprises LGP, said LGP be in the present embodiment LGP.
A kind of LCD comprises module backlight, and said module backlight is the module backlight in the present embodiment.
Embodiment 2:
Like Fig. 3, shown in 4, the difference of present embodiment and embodiment 1 is: the positive N pyramid stage body of exiting surface 1 type of being provided with of said LGP, the said type of positive hexagonal pyramid stage body of positive N pyramid stage body type of being.
As shown in Figure 4, such positive hexagonal pyramid stage body comprises six pyramidal surfaces and an end face 14.Wherein, the side comprises between six pyramidal surfaces and is provided with chamfering that said chamfering is a rounded corner.The shape of said six pyramidal surfaces 11 is identical, and size equates that the shape of six rounded corners 10 is identical, and size also all equates.The end face 14 of said type of positive hexagonal pyramid stage body is positive six arc limit curved surfaces, seamlessly transits between the top margin of said positive hexagon curved surface and each rounded corner.
Compare with embodiment 1, the leaded light of LGP, light harvesting and diffusion effect have decline slightly in the present embodiment.This be because; Along with increasing of pyramidal surface; Can there be the drain region in the positive arrangement of N pyramid stage body on the exiting surface of LGP of class inevitably; And intersect the brightness enhancing of locating on formed summit between pyramidal surface, rounded corner and the end face, the place forms bright spot on the summit, causes LGP that the diffusion and the light harvesting effect of light are reduced.
A kind of module backlight comprises LGP, said LGP be in the present embodiment LGP.
A kind of LCD comprises module backlight, and said module backlight is the module backlight in the present embodiment.
The utility model LGP has improved the brightness of module backlight, and then has improved the brightness of LCD, has good light harvesting and equal light effect simultaneously; And therefore the thickness of module backlight also reduce, and can realize ultra-thinization of LCD.
It is understandable that above embodiment only is the illustrative embodiments that is for the principle that the utility model is described, yet the utility model is not limited thereto.For the one of ordinary skilled in the art, under the situation of spirit that does not break away from the utility model and essence, can make various modification and improvement, these modification and improvement also are regarded as the protection domain of the utility model.
Claims (10)
1. a LGP comprises light conducting plate body, and the one side of said light conducting plate body is an exiting surface; It is characterized in that; Said exiting surface type of being provided with pyramid stage body, said type of pyramid stage body includes pyramidal surface and an end face, is formed with chamfering between every adjacent two pyramidal surfaces.
2. LGP according to claim 1 is characterized in that, said each chamfering is a rounded corner.
3. LGP according to claim 2; It is characterized in that; Said type of pyramid stage body type of being orthopyramid stage body; Identical and the equal and opposite in direction of shape of each pyramidal surface of said type orthopyramid stage body, and each pyramidal surface be shaped as isosceles triangle, the intersection point on the both sides in the said isosceles triangle except that the base contacts with the end face of such orthopyramid stage body.
4. LGP according to claim 3 is characterized in that, said each pyramidal surface be shaped as isosceles right triangle.
5. LGP according to claim 4 is characterized in that, said positive rectangular pyramid stage body of class orthopyramid stage body type of being or type positive hexagonal pyramid stage body be type positive eight-frustum body perhaps.
6. according to the described LGP of one of claim 1-5, it is characterized in that, said end face for can and each pyramidal surface between the curved surface that seamlessly transits.
7. according to the described LGP of one of claim 1-5, it is characterized in that, the identical and equal and opposite in direction of shape of said each type pyramid stage body, and a type pyramid stage body is arranged side by side on said exiting surface and is delegation or multirow.
8. LGP according to claim 7 is characterized in that, the base of the class pyramid stage body that each base of each type pyramid stage body is adjacent with it respectively overlaps.
9. a module backlight is characterized in that, comprises the described LGP of one of claim 1-8.
10. a LCD is characterized in that, comprises the described module backlight of claim 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220151819 CN202600176U (en) | 2012-04-11 | 2012-04-11 | Light guiding plate, backlight module and liquid crystal display |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220151819 CN202600176U (en) | 2012-04-11 | 2012-04-11 | Light guiding plate, backlight module and liquid crystal display |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202600176U true CN202600176U (en) | 2012-12-12 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220151819 Expired - Lifetime CN202600176U (en) | 2012-04-11 | 2012-04-11 | Light guiding plate, backlight module and liquid crystal display |
Country Status (1)
| Country | Link |
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| CN (1) | CN202600176U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103941324A (en) * | 2014-03-18 | 2014-07-23 | 京东方科技集团股份有限公司 | Light guide plate, backlight source module and display device |
| CN104049296A (en) * | 2014-05-27 | 2014-09-17 | 瑞仪光电股份有限公司 | Light guide plate and light source module |
| CN105445845A (en) * | 2015-12-28 | 2016-03-30 | 深圳市真屏科技发展有限公司 | Optical lens type light guiding device of LED screen |
| CN108897090A (en) * | 2018-05-25 | 2018-11-27 | 深圳创维－Rgb电子有限公司 | A kind of light guide plate, liquid crystal module and display equipment |
-
2012
- 2012-04-11 CN CN 201220151819 patent/CN202600176U/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103941324A (en) * | 2014-03-18 | 2014-07-23 | 京东方科技集团股份有限公司 | Light guide plate, backlight source module and display device |
| CN104049296A (en) * | 2014-05-27 | 2014-09-17 | 瑞仪光电股份有限公司 | Light guide plate and light source module |
| CN105445845A (en) * | 2015-12-28 | 2016-03-30 | 深圳市真屏科技发展有限公司 | Optical lens type light guiding device of LED screen |
| CN105445845B (en) * | 2015-12-28 | 2019-05-31 | 深圳市真屏科技发展有限公司 | The optical lens mirror guiding device of LED screen |
| CN108897090A (en) * | 2018-05-25 | 2018-11-27 | 深圳创维－Rgb电子有限公司 | A kind of light guide plate, liquid crystal module and display equipment |
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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: 20121212 |