CN202494798U - 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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- CN202494798U CN202494798U CN 201220058528 CN201220058528U CN202494798U CN 202494798 U CN202494798 U CN 202494798U CN 201220058528 CN201220058528 CN 201220058528 CN 201220058528 U CN201220058528 U CN 201220058528U CN 202494798 U CN202494798 U CN 202494798U
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Abstract
The utility model provides a light guide plate, a backlight module and a liquid crystal display device, and relates to the field of liquid crystal display. The light guide plate comprises a light guide plate substrate, wherein the light guide plate substrate comprises an incident surface used for receiving a light beam, an undersurface connected with the incident surface, and an emergent surface which is connected with the incident surface and opposite to the undersurface; and the light guide plate further comprises at least one net point formed on the emergent surface. Other four surfaces of the light guide plate substrate except the incident surface and the emergent surface are all covered by a light reflecting layer, and other parts of the emergent surface except the net points are covered by a light reflecting layer. The technical scheme of the utility model can simplify the structure of the backlight module, reduce the cost of the backlight module, and increase the scattering performance of the light guide plate.
Description
Technical field
The utility model relates to field of liquid crystal display, is meant a kind of LGP, module backlight and liquid crystal indicator especially.
Background technology
Module backlight is the key component of LCD, can provide brightness sufficient and uniform light source through module backlight, and display panels can normally be shown.For the sufficient light source brightness that makes module backlight is even, need in module backlight, increase LGP usually.LGP is the blooming piece that can line source (as: CCFL (Cold Cathode Fluorescent Lamp, cathode fluorescent tube)) or pointolite (as: LED (Light Emitting Diode, light emitting diode)) be atomized into uniform area light source.
As shown in Figure 1; Existing LGP is to utilize the total reflection of light in LGP base material 1 inside; The light that light source 2 is sent comes at whole LGP base material 1 internal communication, utilizes design in the white site 3 by thin and close of bottom surface light to be carried out scattering then, thus outgoing; This just requires below LGP base material 1, to add reflection diaphragm 4; In the hope of failing the light reflected back LGP base material 1 again of total reflection, so just cause the structure more complicated of module backlight, and the astigmatism property of LGP is relatively poor.
The utility model content
The technical matters that the utility model will solve provides a kind of LGP, module backlight and liquid crystal indicator, can make simplifying the structure of module backlight, reduces the cost of module backlight, and improves the astigmatism property of LGP.
For solving the problems of the technologies described above, the utility model provides technical scheme following:
A kind of LGP, said LGP comprises the LGP base material, and said LGP base material comprises that the bottom surface that the plane of incidence in order to receiving beam, links to each other with the plane of incidence links to each other and the exit facet relative with the bottom surface with the plane of incidence with one, and said LGP also comprises:
Be formed at least one site on the said exit facet;
Wherein, said LGP base material all is coated with reflector layer on other four sides except that the said plane of incidence and said exit facet, is coated with reflector layer on other part on the said exit facet except that said site.
Further, said LGP base material is coated with reflectorized material on other four sides except that the said plane of incidence and said exit facet, and other part on the said exit facet except that said site is coated with reflectorized material.
Further, said reflectorized material is reflective printing ink.
Wherein, said reflectorized material is for including TiO
2White optical printing ink.
Further, be coated with diffusion material on the said site.
Wherein, be coated with at least one circular astigmatic particle on the said site.
Further, said site is row arranges, near the plane of incidence of said LGP base material on direction away from the said plane of incidence, the diameter of said site increases gradually.
Further, said site is row arranges, near the plane of incidence of said LGP base material on direction away from the said plane of incidence, the line-spacing between the said site is less gradually.
The utility model embodiment also provides a kind of module backlight, comprises above-mentioned LGP.
The utility model embodiment also provides a kind of liquid crystal indicator, comprises above-mentioned module backlight.
The embodiment of the utility model has following beneficial effect:
The LGP base material all is coated with reflector layer on other four sides except that the plane of incidence and exit facet; The light that sends of light source only can be at LGP base material internal communication like this; And can be from the bottom surface outgoing of LGP base material; Therefore one side need not be provided with reflection diaphragm in the bottom surface of LGP base material, thereby can make simplifying the structure of module backlight, reduces the cost of module backlight; In addition, do not cover reflector layer on the site of LGP base material exit facet, the light at LGP base material internal communication can be atomized into uniform surface light source with line source or pointolite from the exit facet outgoing like this.
Description of drawings
Fig. 1 is the structural representation of LGP of the prior art;
Fig. 2 is the structural representation of the LGP of the utility model;
Fig. 3 is the schematic perspective view of the LGP of the utility model;
Fig. 4 is the enlarged diagram of the site of a part shown in Figure 2.
Reference numeral
1 LGP base material
2 light sources
3 white sites
4 reflection diaphragms
5 sites
6 reflectorized materials
7 astigmatic particles
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 to the complex structure of module backlight in the prior art; The astigmatism property of LGP is not good problem; A kind of LGP, module backlight and liquid crystal indicator are provided; Can make simplifying the structure of module backlight, reduce the cost of module backlight, and improve the astigmatism property of LGP.
The LGP of the utility model is applied in the module backlight; This LGP comprises the LGP base material; This LGP base material comprises that the bottom surface that the plane of incidence in order to receiving beam, links to each other with the plane of incidence links to each other and the exit facet relative with the bottom surface with the plane of incidence with one, and this LGP also comprises: be formed at least one site on this exit facet;
Wherein, this LGP base material all is coated with reflector layer on other four sides except that this plane of incidence and this exit facet, is coated with reflector layer on other part on this exit facet except that the site.
Particularly, this LGP base material is coated with reflectorized material on other four sides except that this plane of incidence and this exit facet, and other part on this exit facet except that this site is coated with reflectorized material.
Among the utility model embodiment; The light that light source sends gets into the LGP base material from the plane of incidence, because LGP base material other except that the plane of incidence and exit facet all is coated with reflector layer on four sides, the light that sends of light source only can be at LGP base material internal communication like this; And can be from the bottom surface outgoing of LGP base material; Therefore one side need not be provided with reflection diaphragm in the bottom surface of LGP base material, thereby can make simplifying the structure of module backlight, reduces the cost of module backlight; In addition, do not cover reflector layer on the site of LGP base material exit facet, the light at LGP base material internal communication can be atomized into uniform surface light source with line source or pointolite from the exit facet outgoing like this.
Below in conjunction with Fig. 2 and Fig. 3 the LGP of the utility model is further specified:
As shown in Figure 2; The LGP of present embodiment is applied in the module backlight; This LGP comprises LGP base material 1; LGP base material 1 comprises that the bottom surface that the plane of incidence in order to receiving beam, links to each other with the plane of incidence links to each other and the exit facet relative with the bottom surface with the plane of incidence with one, and LGP also comprises: be formed at least one site 5 on the exit facet; Wherein, LGP base material 1 is coated with reflectorized material 6 on other four sides except that the plane of incidence and exit facet, and other part on the exit facet except that the site is coated with reflectorized material 6.
Further, better for the astigmatism property that makes LGP, also be coated with diffusion material on the site 5, reach the purpose that makes the light diffusion.Particularly, as shown in Figure 4, be coated with at least one circular astigmatic particle 7 on the site 5.
Further; As shown in Figure 3; Site 5 is row on the exit facet of LGP base material 1 arranges, and can arrange for parallel rows particularly, in order to make the light that penetrates LGP base material 1 more even; From near the plane of incidence of LGP base material 1 on direction away from the plane of incidence, the diameter of site 5 increases gradually.Perhaps, near the plane of incidence of LGP base material 1 on direction away from the plane of incidence, the line-spacing between the site 5 is less gradually.
Among the utility model embodiment, reflectorized material 6 can be reflective printing ink, and further, reflectorized material 6 can be for including TiO
2White optical printing ink.
The utility model provides a kind of novel optic plate; This LGP is at the exit facet of traditional LGP base material and bottom surface printing high reflectance and the material of extinction not; On exit facet, exist the site let the light outgoing, and apply astigmatic particle, reach the purpose that makes the light diffusion in the position, site.The LGP of the utility model can make full use of the light that light source sends, and makes every effort to transform to area source from line source.Come at whole LGP base material internal communication with light that traditional LGP utilizes total reflection that light source is sent and to compare; The LGP of the utility model is lower to the requirement of light path; And do not need to be sidelong at bottom surface of light guide plate one again to put reflection diaphragm; Can make simplifying the structure of module backlight, reduce the cost of module backlight; In addition; LGP base material exit facet is designed with by thin and close; By little and big site, and apply particle on the site with astigmatic character, like this can be from the site outgoing of exit facet at the light of LGP base material internal communication; Can line source be atomized into uniform surface light source, improve the astigmatism property of LGP.
When making the LGP of the utility model; At first need be at other five the even printing white reflection printing ink of LGP base material except that the plane of incidence; On the exit facet of LGP base material, carve the site then, the lattice point structure that carve this moment is V-shaped groove or circular shaped lattice point.Wherein, far away more from light source, the site is intensive more also big more, on the site, applies astigmatic particle at last.
Wherein, The preparation technology of above-mentioned site can be printing-type and non-printing-type, for example, and baking, ultra-violet curing, chemical etching, photoetching and precision optical machinery portrayal method etc.; The light guide plate mesh point that these preparation technologies form can be the micro structure array of different shape; Such as lens arra, spheroidal array, tetrahedron micro-prism array etc., also can be the Baltimore groove or the convex slot of different shape, such as V-shaped groove.Apply on the said site that light to be spread behind the astigmatic particle more even, homogeneity is better, and the structure of site is not limited to above-mentioned described structure, apply behind the astigmatic particle can printing opacity lattice point structure all within the protection domain of the utility model.
The utility model embodiment also provides a kind of module backlight; Comprise above-mentioned LGP, do not comprise the reflection diaphragm of the bottom surface side that is arranged on this LGP in this module backlight, be coated with reflector layer on the bottom surface of the LGP of the utility model module backlight; Particularly; Can realize that incident light can the outgoing from the bottom surface like this, so one side need not be provided with reflection diaphragm in the bottom surface of LGP through on this bottom surface, applying reflectorized material; Make the simplifying the structure of module backlight, thereby reduced the cost of module backlight.
The utility model embodiment also provides a kind of liquid crystal indicator, comprises above-mentioned module backlight.
Need to prove: " " in the utility model is not as the term that limits quantity.
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 (10)
1. LGP; Said LGP comprises the LGP base material; Said LGP base material comprises that the bottom surface that the plane of incidence in order to receiving beam, links to each other with the plane of incidence links to each other and the exit facet relative with the bottom surface with the plane of incidence with one, is characterized in that said LGP also comprises:
Be formed at least one site on the said exit facet;
Wherein, said LGP base material all is coated with reflector layer on other four sides except that the said plane of incidence and said exit facet, is coated with reflector layer on other part on the said exit facet except that said site.
2. LGP according to claim 1; It is characterized in that; Said LGP base material is coated with reflectorized material on other four sides except that the said plane of incidence and said exit facet, and other part on the said exit facet except that said site is coated with reflectorized material.
3. LGP according to claim 2 is characterized in that, said reflectorized material is reflective printing ink.
4. LGP according to claim 3 is characterized in that said reflectorized material is for including TiO
2White optical printing ink.
5. LGP according to claim 1 is characterized in that, is coated with diffusion material on the said site.
6. LGP according to claim 5 is characterized in that, is coated with at least one circular astigmatic particle on the said site.
7. LGP according to claim 1 is characterized in that, said site is row arranges, near the plane of incidence of said LGP base material on direction away from the said plane of incidence, the diameter of said site increases gradually.
8. LGP according to claim 1 is characterized in that, said site is row arranges, near the plane of incidence of said LGP base material on direction away from the said plane of incidence, the line-spacing between the said site is less gradually.
9. a module backlight is characterized in that, comprises like each described LGP among the claim 1-8.
10. a liquid crystal indicator is characterized in that, comprises module backlight as claimed in claim 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220058528 CN202494798U (en) | 2012-02-21 | 2012-02-21 | Light guide plate, backlight module and liquid crystal display device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220058528 CN202494798U (en) | 2012-02-21 | 2012-02-21 | Light guide plate, backlight module and liquid crystal display device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202494798U true CN202494798U (en) | 2012-10-17 |
Family
ID=47001021
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220058528 Expired - Lifetime CN202494798U (en) | 2012-02-21 | 2012-02-21 | Light guide plate, backlight module and liquid crystal display device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202494798U (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103912797A (en) * | 2013-01-06 | 2014-07-09 | 纬创资通股份有限公司 | Backlight module |
| CN104110650A (en) * | 2014-06-19 | 2014-10-22 | 京东方科技集团股份有限公司 | Light guide plate, manufacturing method thereof and backlight module |
| CN106287330A (en) * | 2015-06-04 | 2017-01-04 | 云光科技股份有限公司 | Light emitting module |
| CN108224240A (en) * | 2018-01-12 | 2018-06-29 | 京东方科技集团股份有限公司 | Down straight aphototropism mode set and display device |
| CN108873154A (en) * | 2018-08-10 | 2018-11-23 | 江苏达伦电子股份有限公司 | A kind of the network point distribution design method and light guide plate of light guide plate |
| CN109786160A (en) * | 2017-11-14 | 2019-05-21 | 群光电子(苏州)有限公司 | Backlight module for keyboard |
-
2012
- 2012-02-21 CN CN 201220058528 patent/CN202494798U/en not_active Expired - Lifetime
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103912797A (en) * | 2013-01-06 | 2014-07-09 | 纬创资通股份有限公司 | Backlight module |
| CN104110650A (en) * | 2014-06-19 | 2014-10-22 | 京东方科技集团股份有限公司 | Light guide plate, manufacturing method thereof and backlight module |
| CN104110650B (en) * | 2014-06-19 | 2017-05-31 | 京东方科技集团股份有限公司 | A kind of light guide plate and preparation method thereof, backlight module |
| US9726804B2 (en) | 2014-06-19 | 2017-08-08 | Boe Technology Group Co., Ltd. | Light guide plate and method of manufacturing the same, and backlight module |
| CN106287330A (en) * | 2015-06-04 | 2017-01-04 | 云光科技股份有限公司 | Light emitting module |
| CN109786160A (en) * | 2017-11-14 | 2019-05-21 | 群光电子(苏州)有限公司 | Backlight module for keyboard |
| CN109786160B (en) * | 2017-11-14 | 2020-07-24 | 群光电子(苏州)有限公司 | Backlight module for keyboard |
| CN108224240A (en) * | 2018-01-12 | 2018-06-29 | 京东方科技集团股份有限公司 | Down straight aphototropism mode set and display device |
| CN108873154A (en) * | 2018-08-10 | 2018-11-23 | 江苏达伦电子股份有限公司 | A kind of the network point distribution design method and light guide plate of light guide plate |
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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: 20121017 |