CN202870335U - Light guide plate with dots - Google Patents
Light guide plate with dots Download PDFInfo
- Publication number
- CN202870335U CN202870335U CN2011204892705U CN201120489270U CN202870335U CN 202870335 U CN202870335 U CN 202870335U CN 2011204892705 U CN2011204892705 U CN 2011204892705U CN 201120489270 U CN201120489270 U CN 201120489270U CN 202870335 U CN202870335 U CN 202870335U
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- China
- Prior art keywords
- guide plate
- light guide
- site
- lattice point
- point structure
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Abstract
The utility model relates to a light guide plate with a dot structure. The light guide plate with the dot structure is used for converting a point light source into a surface light source in a back light source. The dot structure comprises hemispherical dots which are located in the dot central area and annular channels adjacent to the hemispherical dots. The dots are in matrix array arrangement or progressive dislocation arrangement. According to the light guide plate with the dot structure, the positive luminance brightness can be improved, and the distribution of surface luminance is uniform.
Description
Technical field
The utility model relates to lighting field, more particularly, relates to a kind of light guide plate with lattice point structure.
Background technology
In the display device now, liquid crystal display (LCD) is in occupation of the very large market share, because liquid crystal is non-active luminous, the demonstration that work just must be adopted backlight.The performance quality of backlight has directly determined the indices such as the brightness, color, efficient, energy consumption of dull and stereotyped liquid crystal display.In the LCD backlight, extensively adopt now light emitting diode (LED) as the backlight of LED, LED has that driving voltage is low, power consumption is few, color rendition is good, environmental suitability is strong, without advantages such as mercury pollution.
Along with the rise of surface computer, market has proposed higher demand for the liquid crystal display module.The assembly that this province of backlight consists of as a kind of multilayer materials, each properties of materials all is the factor that affects brightness, light guide plate is used as in backlight and concentrates light source-guide to optical film, in order to improve the front face brightness of backlight LED as the assembly in the backlight.
The utility model content
The purpose of this utility model is to provide a kind of light guide plate, has lattice point structure, can improve the diffuse reflectance of light guide plate, to improve the front face brightness of backlight product.
A kind of like this light guide plate of the utility model structure, light guide plate comprises lattice point structure.Lattice point structure comprises the semisphere site that is positioned at the site middle section and the ring-type raceway groove that is close to the semisphere site.The ring-type raceway groove makes from the scattered light of hemispherical site outgoing to concentrate on along the direction outgoing perpendicular to the light guide plate plane for limiting the light scattering direction of hemispherical site, thereby has improved positive emitting brightness and the diffuse reflectance of light guide plate.
Preferably, semisphere site diameter is 0.02～0.12mm, the outwards outstanding 0.02～0.15mm of the relative light guide plate main body in semisphere site.
Preferably, the section radius of ring-type raceway groove is 0.015～0.03mm.
The utility model provides another lattice point structure, and lattice point structure comprises the half-spherical cavity that is positioned at the site middle section and the circular protrusion that is close to half-spherical cavity.From the light of the hemispherical cavity outgoing of middle section, because circular protrusion is for the restriction of emergent light, so that emergent light is concentrated along the direction outgoing perpendicular to the light guide plate plane.The half-spherical cavity diameter is preferably 0.02～0.12mm, and the embedded degree of depth of half-spherical cavity is 0.002～0.15mm.The projection radius of the circular protrusion of next-door neighbour's half-spherical cavity is 0.001～0.03mm.
More even for the bright dipping that makes backlight, site on the light guide plate adopts matrix array to arrange or the dislocation aligning method of arranging line by line.
As a kind of improved procedure of the present utility model, for half-spherical cavity 205, can also select to use instead the site of triangle, square, the shape and structure such as trapezoidal, conical, be not limited to half-spherical cavity.
The utility model adopts above-mentioned structure, has improved the diffuse reflectance of light guide plate, the mode that adopts simultaneously the site matrix array to arrange or misplace and arrange line by line, and the face of assurance goes out uniformity of light, thereby has improved the emitting brightness of whole backlight source module.
Description of drawings
Below in conjunction with accompanying drawing the utility model is described.
Fig. 1 is the structural representation of the backlight of use the utility model light guide plate.
Fig. 2 is the vertical cross section of light guide plate mesh point structure in the prior art.
Fig. 3 is the first light guide plate vertical cross section of preferred embodiment of the utility model.
Fig. 4 is the light guide plate vertical cross section of another preferred embodiment of the utility model.
Fig. 5 is the vertical cross section of the utility model square cavity lattice point structure light guide plate.
Fig. 6 is the vertical cross section of the conical cavity lattice point structure of the utility model light guide plate.
Fig. 7 is the light guide plate schematic diagram that the utility model adopts the site matrix array to arrange.
Fig. 8 is the light guide plate schematic diagram that the utility model adopts the site to misplace line by line and arrange.
Each assembly label is as follows: led light source 1, light guide plate 2, reflectance coating 3, lower diffusion barrier 4, lower bright enhancement film 5, upper bright enhancement film 6, diffusion barrier 7, site 201, light guide plate main body 202, hemispherical site 203, annular channel 204, cavity 205, annular protrusion 206.
Embodiment
Below in conjunction with the drawings and specific embodiments the utility model is elaborated.
Fig. 1 is a kind of back light source structure schematic diagram with light guide plate.Backlight comprises led light source 1, light guide plate 2, reflectance coating 3, lower diffusion barrier 4, lower bright enhancement film 5, upper bright enhancement film 6, diffusion barrier 7.The site 201 that has array arrangement on the light guide plate 2 after the led light source bright dipping, through the scattering of light guide plate 2, will be pointed out optical arrays and be converted to the uniform surface bright dipping.The uniform light of outgoing incides the optical film that is comprised of lower diffusion barrier 4, lower bright enhancement film 5, upper bright enhancement film 6, diffusion barrier 7 again, and optical processing is carried out in bright dipping.
Fig. 2 is the vertical cross section of light guide plate mesh point in the prior art.Light guide plate mesh point is hemispherical projection.Because hemispheric site all has the scattered light outgoing in all directions, so that have the loss of scattered light to exist in the direction along the light guide plate plane, reduced positive light extraction efficiency.
Fig. 3 is the first light guide plate vertical cross section of preferred embodiment of the utility model.Site 201 comprises hemispherical site 203 and near the annular channel that is inner concavity 204 of hemispherical site.Hemispherical site 203 is outwards outstanding with respect to light guide plate main body 202.When incident light is directed to hemispherical site 203 and since next-door neighbour annular channel limited incident light from the parallel plane direction outgoing of light guide plate so that emergent light concentrates on the direction outgoing vertical with the light guide plate plane, improved the front face brightness of backlight.Effective for the bright dipping that makes light guide plate, the diameter of hemispherical site is chosen as 0.025mm, and the relative light guide plate main body in hemispherical site is outstanding 0.069mm outwards.For scattered light is concentrated perpendicular to the outgoing of light guide plate plane, the section radius of annular channel is 0.02mm.
Fig. 4 is the light guide plate sectional view of another preferred embodiment of the utility model.Site 201 comprises hemispherical cavity 205, and near the annular protrusion that is evagination 206 of hemispherical cavity.When incident light is directed to hemispherical cavity 205, the effect of converging that cavity plays light, 206 pairs of cavitys of annular protrusion converge its further restriction of light, reduce the light scattering on the direction parallel with light guide plate, thereby improved the front face brightness of backlight.Preferably, the cavity diameter is 0.035mm, and it is 0.006mm that cavity embeds the light guide plate main body degree of depth, and the radius of annular protrusion is 0.002mm.
Fig. 5 is the vertical cross section of the another kind of lattice point structure light guide plate of the utility model.Wherein lattice point structure adopts square curved cavity.Be with respect to the outside outstanding annular protrusions 206 of light guide plate main body 202 near square cavity.The emergent light of 206 pairs of square cavitys of annular protrusion limits, and reduces the light scattering on the direction parallel with light guide plate, so that outgoing is carried out perpendicular to the light guide plate plane in the emergent light edge, thereby has reduced the loss of emergent light, has improved the front face brightness of backlight.Based on similar improvement, square cavity can also be triangle, the polygon cavity such as trapezoidal.
Fig. 6 is the vertical cross section of the conical cavity lattice point structure of the utility model light guide plate.In the present embodiment, lattice point structure adopts conical cavity 205, is being provided with the annular protrusion 206 of outwards giving prominence to respect to light guide plate main body 202 near conical cavity edge.Because the chamber face of conical cavity always has angle with vertical light guide plate in-plane, therefore the emergent light from conical cavity can form diffusion at vertical light guide plate in-plane, forms uniform light.Annular protrusion 206 is being set so that the scattered light of along continuous straight runs is limited near conical cavity edge, is reducing emergent light in the loss that is parallel on the light guide plate in-plane, improving the front face brightness of backlight.
The site that Fig. 7 and Fig. 8 the are respectively the utility model lattice point structure schematic diagram of arranging.Fig. 7 adopts matrix array to arrange, and Fig. 8 adopts line by line dislocation to arrange.Adopt the site of Fig. 7, Fig. 8 to arrange, can make the face bright dipping of light guide plate even, improve the light effect that of backlight.
Disclosed above, it only is better embodiment of the present utility model, can not limit scope of the present utility model with this, the equalization that those skilled in the art in the art do according to this creation changes, and the change known of those skilled in that art, all should still belong to the scope that the utility model is contained.
Claims (6)
1. a light guide plate comprises lattice point structure, it is characterized in that, described lattice point structure comprises the semisphere site that is positioned at the site middle section and the ring-type raceway groove that is close to the semisphere site.
2. a light guide plate comprises lattice point structure, it is characterized in that, described lattice point structure comprises the half-spherical cavity that is positioned at the site middle section and the circular protrusion that is close to half-spherical cavity.
3. light guide plate according to claim 2 is characterized in that, described cavity be triangle, square, trapezoidal, conical one of them.
4. arbitrary described light guide plate is characterized in that according to claim 1-3, and described lattice point structure adopts matrix array to arrange in described light guide plate.
5. arbitrary described light guide plate is characterized in that according to claim 1-3, and described lattice point structure adopts line by line dislocation to arrange in described light guide plate.
6. light guide plate according to claim 3 is characterized in that, described light guide plate is used for backlight source module, and described backlight source module also comprises led light source, reflectance coating, lower diffusion barrier, lower bright enhancement film, upper bright enhancement film, diffusion barrier.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204892705U CN202870335U (en) | 2011-11-30 | 2011-11-30 | Light guide plate with dots |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204892705U CN202870335U (en) | 2011-11-30 | 2011-11-30 | Light guide plate with dots |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202870335U true CN202870335U (en) | 2013-04-10 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011204892705U Expired - Fee Related CN202870335U (en) | 2011-11-30 | 2011-11-30 | Light guide plate with dots |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202870335U (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103345012A (en) * | 2013-07-31 | 2013-10-09 | 宁波激智科技股份有限公司 | Brightening diffusion film and preparation method thereof |
| CN105278013A (en) * | 2014-07-23 | 2016-01-27 | 深圳市旺鑫精密工业股份有限公司 | Light-guiding diaphragm |
| CN105353444A (en) * | 2015-11-13 | 2016-02-24 | 重庆鑫翎创福光电科技股份有限公司 | Printing-free light guide plate structure |
| CN103955018B (en) * | 2014-04-17 | 2016-09-07 | 青岛海信电器股份有限公司 | The manufacture method of a kind of light guide plate mesh point and a kind of light guide plate |
| WO2018045677A1 (en) * | 2016-09-12 | 2018-03-15 | 深圳Tcl新技术有限公司 | Light guide plate, backlight module and display device |
| CN108107503A (en) * | 2017-12-27 | 2018-06-01 | 翰博高新材料(合肥)股份有限公司 | A kind of method for the site height and integral brightness for promoting hot-pressing light guide plate |
| CN110208899A (en) * | 2018-08-01 | 2019-09-06 | 光宝电子(广州)有限公司 | Backlight module and input equipment |
| CN114397726A (en) * | 2021-12-22 | 2022-04-26 | 东莞市现代精工实业有限公司 | Light guide plate with polycyclic mesh points |
-
2011
- 2011-11-30 CN CN2011204892705U patent/CN202870335U/en not_active Expired - Fee Related
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103345012A (en) * | 2013-07-31 | 2013-10-09 | 宁波激智科技股份有限公司 | Brightening diffusion film and preparation method thereof |
| CN103955018B (en) * | 2014-04-17 | 2016-09-07 | 青岛海信电器股份有限公司 | The manufacture method of a kind of light guide plate mesh point and a kind of light guide plate |
| CN105278013A (en) * | 2014-07-23 | 2016-01-27 | 深圳市旺鑫精密工业股份有限公司 | Light-guiding diaphragm |
| CN105353444A (en) * | 2015-11-13 | 2016-02-24 | 重庆鑫翎创福光电科技股份有限公司 | Printing-free light guide plate structure |
| WO2018045677A1 (en) * | 2016-09-12 | 2018-03-15 | 深圳Tcl新技术有限公司 | Light guide plate, backlight module and display device |
| CN108107503A (en) * | 2017-12-27 | 2018-06-01 | 翰博高新材料(合肥)股份有限公司 | A kind of method for the site height and integral brightness for promoting hot-pressing light guide plate |
| CN110208899A (en) * | 2018-08-01 | 2019-09-06 | 光宝电子(广州)有限公司 | Backlight module and input equipment |
| US11036306B2 (en) | 2018-08-01 | 2021-06-15 | Lite-On Electronics (Guangzhou) Limited | Backlight module and input device |
| CN114397726A (en) * | 2021-12-22 | 2022-04-26 | 东莞市现代精工实业有限公司 | Light guide plate with polycyclic mesh points |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130410 Termination date: 20161130 |