CN202330759U - Light guide plate and backlight module - Google Patents
Light guide plate and backlight module Download PDFInfo
- Publication number
- CN202330759U CN202330759U CN 201120463746 CN201120463746U CN202330759U CN 202330759 U CN202330759 U CN 202330759U CN 201120463746 CN201120463746 CN 201120463746 CN 201120463746 U CN201120463746 U CN 201120463746U CN 202330759 U CN202330759 U CN 202330759U
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- lgp
- light
- orthoscopic
- mill line
- guide plate
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Abstract
The utility model discloses a light guide plate and a backlight module. The light guide plate comprises a light source, a light entering surface, a reflecting surface and a light emitting surface. According to the light guide plate, microstructure linear abrasion patterns are formed on the light emitting surface of the light guide plate; a plurality of equal lattice points are arranged on the reflecting surface of the light guide plate; and the densities of the lattice points change from a vertically-connected part between the light entering surface and the light reflecting surface along the direction away from the light entering surface. Therefore, more lights are fully collected and converged inside the light guide plate, and further the brightness and the light emitting uniformity of the light guide plate are increased and the utilization rate of the light is increased simultaneously.
Description
Technical field
The utility model relates to electronic display unit, relates in particular to a kind of LGP and module backlight.
Background technology
Liquid crystal indicator is a kind of non-self-emission display apparatus; It shows mainly passing through or the obstructed realization of coming by control light beam that external light source sends; Therefore need corresponding backlight module or preceding optical mode group usually; This module backlight or before the optical mode group can be with the beam direction display panel that external light source sent, thereby realize Presentation Function.Module backlight generally comprises the optical devices of light source and reflection and reflective functions, and wherein light source mainly is divided into two kinds: a kind of is that CCFL (CCFL), another kind are light emitting diode (LED).Module backlight generally all is at an end of core component LGP light emitting diode to be installed.For reaching the excellent requirement of slimming, high brightness, optical effect, the design of LGP is especially important that just show of structural design particularly.
Please refer to Fig. 1, be the structural representation of existing a kind of module backlight.Module backlight comprises optical modules such as light source 11, reflectance coating (sheet) 12, LGP 13, diffuser plate 14 and prism plate combination 15.And LGP is the core component of module backlight.This LGP comprises incidence surface 131, exiting surface 132 and reflective surface 133 (being the bottom surface).When incidence surface receives the light beam that the light source corresponding with it sends; And it is this light beam importing LGP is inner; Reflective surface forms along the homodisperse scattered beam of all directions then with the beam reflection, the scattering that import, and exiting surface is then derived LGP with homodisperse light beam.Generally speaking, generally do not deal with on the existing LGP exiting surface, then when arriving on the exiting surface from the light on the reflective surface without fully refraction, scattering, cause the LGP briliancy not high, and the difficult control of outgoing light homogeneity, light loss is comparatively serious.In order to improve briliancy and outgoing light homogeneity, granular micro-structure can also be set, but this set mode processing technology is complicated on exiting surface, the process-cycle is long, and cost is high.
In addition, in order to improve light utilization efficiency, can also a plurality of sites be set at the LGP reflective surface.Site size and density are little of big variation along having away from the incidence surface direction from incidence surface on the existing LGP reflective surface; Cause the site size variable wayward; Excesssive gap between the site still has more light to penetrate from the LGP periphery, and it is bad that light utilization efficiency improves effect.
The utility model content
The technical problem underlying that the utility model will solve is, a kind of LGP and module backlight are provided, and can avoid causing the problem that the LGP briliancy is not high and outgoing light homogeneity is not enough because of light penetrates in that exiting surface is unprocessed.Further also can reduce the problem that light penetrates from the LGP periphery.
For solving the problems of the technologies described above, the technical scheme that the utility model adopts is following:
A kind of LGP; At least comprise reflective surface, exiting surface; And the interior incidence surface of light importing LGP that is used for the light source of autoluminescence in the future, said reflective surface is corresponding with said exiting surface, and said reflective surface links to each other with said incidence surface; Said incidence surface links to each other with said exiting surface, and microstructure orthoscopic mill line is arranged on the said exiting surface.
Further, said orthoscopic mill line is the orthoscopic mill line that is interrupted to be arranged or/and unremitting orthoscopic mill line.
Further, said orthoscopic mill line protrudes said LGP exiting surface.
Further, said orthoscopic mill line does not have on the said exiting surface of being arranged in of constant spacing.
Further, said orthoscopic mill line height is smaller or equal to 1 micron.
Further, said orthoscopic mill line and incidence surface angle are between-15 degree to 15 degree.
Further, said orthoscopic mill line injection moulding, compacting perhaps grind on said exiting surface.
Further, said reflective surface is provided with a plurality of sites, and the density of said a plurality of sites changes along the direction away from incidence surface from the vertical connecting place with reflective surface of incidence surface from small to large.
Further, said site is the equal diameter site.
Further, said site diameter is greater than 0.020mm, between 0.200mm.
A kind of slim module backlight comprises illuminating source, above-described LGP, and said illuminating source light is injected from the incidence surface of said LGP.
The beneficial effect of the utility model is:
The utility model is through being processed with microstructure orthoscopic mill line at exiting surface; Make the light that arrives exiting surface after the refraction of overground line, scattering; The light that penetrates is converged and restrains, thereby improved LGP briliancy and outgoing light homogeneity, improved the utilization factor of light simultaneously.A plurality of equal-sized sites further are set on reflective surface; And the density of a plurality of sites changes along the direction away from incidence surface from the vertical connecting place with reflective surface of incidence surface from small to large; Make gap smaller between away from the reflective surface site of light source one side; When reflective surface was away from light source one side in the light of illuminating source is injected this LGP, more rays was penetrated on the site, thereby has changed the angle of those light; Make process reflective surface back reflection to the more directive exiting surface of light, improved the utilization factor of light.
Description of drawings
Fig. 1 is the structural representation of existing a kind of module backlight;
Fig. 2 is the planimetric map of the set-up mode one of the utility model LGP exiting surface;
Fig. 3 is the planimetric map of the set-up mode two of the utility model LGP exiting surface;
Fig. 4 a is the light path synoptic diagram of existing LGP;
Fig. 4 b is the light path synoptic diagram of the utility model LGP
Fig. 5 a is the synoptic diagram of the reflective surface of existing LGP;
Fig. 5 b is the synoptic diagram of reflective surface of the LGP of the utility model.
Embodiment
For the purpose, technical scheme and the advantage that make the utility model is clearer, combine accompanying drawing that the utility model is done further explain through embodiment below.
The overall design of the utility model comprises with the lower part: the utility model LGP comprises light source, incidence surface, reflective surface and exiting surface.Wherein, exiting surface is positioned at reflective surface top and parallel with this reflective surface, and this exiting surface links to each other with incidence surface.The LGP of the utility model is provided with microstructure orthoscopic mill line at exiting surface; Make the light of illuminating source when reflective surface reflexes to exiting surface; After mill line place is through abundant deviation, scattering; The light that penetrates is converged and restrains, thereby improved LGP briliancy and outgoing light homogeneity, improved the utilization factor of light simultaneously.
Please refer to Fig. 2, the planimetric map of the set-up mode one of the utility model LGP exiting surface.The LGP of this embodiment comprises exiting surface, reflective surface, incidence surface.This exiting surface is provided with the microstructure orthoscopic mill line that no constant spacing is arranged, mill line protrusion exiting surface, and the angle of mill line and incidence surface is 0 degree, each bar grinds the height of line smaller or equal to 1 micron.
In this embodiment, the orthoscopic mill line that is arranged on the exiting surface has: the orthoscopic mill line and the unremitting orthoscopic mill line that are interrupted are arranged.According to this thinking is set, learns: can also orthoscopic mill line or unremitting orthoscopic that the mill of the orthoscopic on exiting surface line all is set to be interrupted be ground line, can both reach the identical light effect that goes out through experiment.
Please refer to Fig. 4 a, the light path synoptic diagram of existing LGP.Be reflected on this face at a large amount of light of exiting surface, because a little less than the refraction of this exiting surface, scattering power, cause this face of the inhomogeneous ejaculation of light.
Please refer to Fig. 4 b, the light path synoptic diagram of the utility model LGP.The LGP of this embodiment is provided with microstructure orthoscopic mill line through exiting surface; When the light of illuminating source when reflective surface reflexes to this exiting surface; Refraction and scattering take place at this mill line place in light; Deviation takes place at mill line place in the light that is incident, the light that penetrates is converged and restrains, thereby make light penetrate from exiting surface equably.LGP briliancy and outgoing light homogeneity have been improved.
Please refer to and Fig. 3 the planimetric map of the set-up mode two of the utility model LGP exiting surface.In this embodiment, the angle of mill line and incidence surface is that 0 degree is preferable embodiment, can know through experiment, and when the angle that grinds line and incidence surface is set in-15 when spending between 15 degree scopes, the briliancy of LGP and outgoing light homogeneity all can reach than the figure of merit.The orthoscopic mill line among Fig. 3 and the angle of LGP incidence surface are 15 degree.
Please with reference to Fig. 5 a and Fig. 5 b for the synoptic diagram of the reflective surface of existing LGP be the synoptic diagram of reflective surface of the LGP of the utility model.In this embodiment; Abandoned existing LGP site not of uniform size 501; A plurality of equal-sized sites 502 are set, and the density of a plurality of sites changes from small to large along the direction away from incidence surface from the vertical connecting place with reflective surface of incidence surface on reflective surface.Because this exiting surface site size is the same, dot density is bigger on away from the reflective surface of light source, between the gap less; When reflective surface is away from light source one side in the light of illuminating source is injected this LGP; More rays is penetrated on the site, thereby has changed the angle of those light, thereby the light maximum is mapped on the exiting surface; And then reduce light from the loss that the LGP periphery penetrates, improve the utilization factor of light.
In this embodiment, microstructure orthoscopic mill line is arranged on the exiting surface through the mode that directly grinds, and in the operation of reality, can also above-mentioned microstructure orthoscopic mill line be set through methods such as direct compacting or injection mouldings.
In this embodiment, a kind of LGP can also be provided, be provided with equally in its reflective surface setting and the embodiment, here just do not do and do not give unnecessary details.
The utility model also provides a kind of module backlight, comprises illuminating source.And above-mentioned LGP.And this illuminating source is corresponding with the incidence surface position of this LGP.Illuminating source in this embodiment is a light emitting diode, and LGP is the transparent plastic body LGP.
Above content is the further explain that combines concrete embodiment that the utility model is done, and can not assert that the practical implementation of the utility model is confined to these explanations.For the those of ordinary skill of technical field under the utility model, under the prerequisite that does not break away from the utility model design, can also make some simple deduction or replace, all should be regarded as belonging to the protection domain of the utility model.
Claims (11)
1. LGP comprises parallel exiting surface and reflective surface up and down, and with the incidence surface that exiting surface links to each other with reflective surface, it is characterized in that said exiting surface is provided with microstructure orthoscopic and grinds line.
2. LGP as claimed in claim 1 is characterized in that, said orthoscopic mill line is the orthoscopic mill line that is interrupted to be arranged or/and unremitting orthoscopic mill line.
3. LGP as claimed in claim 2 is characterized in that, said orthoscopic mill line protrudes said LGP exiting surface.
4. LGP as claimed in claim 2 is characterized in that, said orthoscopic mill line does not have on the said exiting surface of being arranged in of constant spacing.
5. like any described LGP in the claim 1 to 4, it is characterized in that said orthoscopic mill line height is smaller or equal to 1 micron.
6. like any described LGP in the claim 1 to 4, it is characterized in that said orthoscopic mill line and incidence surface angle are between-15 degree to 15 degree.
7. like any described LGP in the claim 1 to 4, it is characterized in that said orthoscopic mill line perhaps grinds on said exiting surface through injection moulding, compacting.
8. LGP as claimed in claim 1 is characterized in that said reflective surface is provided with a plurality of sites, and the density of said a plurality of sites changes along the direction away from incidence surface from the vertical connecting place with reflective surface of incidence surface from small to large.
9. LGP as claimed in claim 8 is characterized in that, said site is the equal diameter site.
10. like claim 8 or 9 described LGPs, it is characterized in that said site diameter is greater than 0.020mm, between 0.200mm.
11. a slim module backlight comprises illuminating source, it is characterized in that, comprises that also said illuminating source light is injected from the incidence surface of said LGP like any described LGP in the claim 1 to 10.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120463746 CN202330759U (en) | 2011-11-21 | 2011-11-21 | Light guide plate and backlight module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120463746 CN202330759U (en) | 2011-11-21 | 2011-11-21 | Light guide plate and backlight module |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202330759U true CN202330759U (en) | 2012-07-11 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201120463746 Expired - Fee Related CN202330759U (en) | 2011-11-21 | 2011-11-21 | Light guide plate and backlight module |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202330759U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108627903A (en) * | 2017-03-17 | 2018-10-09 | 江苏日月照明电器有限公司 | A kind of light emission rate is high and smooth surface uniformly, the light guide plate of no visual spot |
| TWI698680B (en) * | 2019-02-26 | 2020-07-11 | 瑞儀光電股份有限公司 | Light guide plate, backlight module and display device |
| CN113253478A (en) * | 2021-05-20 | 2021-08-13 | 武汉华星光电技术有限公司 | Display device |
-
2011
- 2011-11-21 CN CN 201120463746 patent/CN202330759U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108627903A (en) * | 2017-03-17 | 2018-10-09 | 江苏日月照明电器有限公司 | A kind of light emission rate is high and smooth surface uniformly, the light guide plate of no visual spot |
| TWI698680B (en) * | 2019-02-26 | 2020-07-11 | 瑞儀光電股份有限公司 | Light guide plate, backlight module and display device |
| CN113253478A (en) * | 2021-05-20 | 2021-08-13 | 武汉华星光电技术有限公司 | Display device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: WUHU DECANG PHOTOELECTRIC CO., LTD. Free format text: FORMER OWNER: SHENZHEN TECHASER TECHNOLOGIES CO., LTD. Effective date: 20150317 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: 518108 SHENZHEN, GUANGDONG PROVINCE TO: 241000 WUHU, ANHUI PROVINCE |
|
| TR01 | Transfer of patent right |
Effective date of registration: 20150317 Address after: 241000 Anhui city of Wuhu province Wuhu economic and Technological Development Zone, a road on the north side (building branch) Patentee after: Wuhu de Ge optoelectronics Co., Ltd. Address before: 518108. E building, Shiyan Industrial Street, Fukang mountain area, Shiyan City, Shenzhen, Guangdong, Baoan District Patentee before: Shenzhen Techaser Technologies Co., Ltd. |
|
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Shenzhen Technology Co., Ltd. Hui Library Assignor: Wuhu de Ge optoelectronics Co., Ltd. Contract record no.: 2015440020315 Denomination of utility model: Light guide plate and backlight module Granted publication date: 20120711 License type: Exclusive License Record date: 20150827 |
|
| LICC | Enforcement, change and cancellation of record of contracts on the licence for exploitation of a patent or utility model | ||
| 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: 20120711 Termination date: 20181121 |