CN107817550A - Light guide plate - Google Patents
Light guide plate Download PDFInfo
- Publication number
- CN107817550A CN107817550A CN201711319731.2A CN201711319731A CN107817550A CN 107817550 A CN107817550 A CN 107817550A CN 201711319731 A CN201711319731 A CN 201711319731A CN 107817550 A CN107817550 A CN 107817550A
- Authority
- CN
- China
- Prior art keywords
- light guide
- light
- guide structure
- guide plate
- incidence surface
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 230000000644 propagated effect Effects 0.000 claims abstract description 3
- 238000009826 distribution Methods 0.000 claims description 6
- 230000003287 optical effect Effects 0.000 claims description 6
- 230000000694 effects Effects 0.000 abstract description 2
- 239000004973 liquid crystal related substance Substances 0.000 description 6
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
Classifications
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
- G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
- G02B6/0033—Means for improving the coupling-out of light from the light guide
- G02B6/0035—Means for improving the coupling-out of light from the light guide provided on the surface of the light guide or in the bulk of it
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
- G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
- G02B6/0013—Means for improving the coupling-in of light from the light source into the light guide
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
- G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
- G02B6/0033—Means for improving the coupling-out of light from the light guide
- G02B6/0035—Means for improving the coupling-out of light from the light guide provided on the surface of the light guide or in the bulk of it
- G02B6/004—Scattering dots or dot-like elements, e.g. microbeads, scattering particles, nanoparticles
- G02B6/0043—Scattering dots or dot-like elements, e.g. microbeads, scattering particles, nanoparticles provided on the surface of the light guide
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
- G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
- G02B6/0066—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form characterised by the light source being coupled to the light guide
- G02B6/0068—Arrangements of plural sources, e.g. multi-colour light sources
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Planar Illumination Modules (AREA)
- Light Guides In General And Applications Therefor (AREA)
Abstract
The present invention relates to a kind of light guide plate, including the first incidence surface, second incidence surface and exiting surface, the exiting surface and the first incidence surface, second incidence surface abuts, exiting surface is provided with the first light guide structure and the second light guide structure, first light guide structure uses a plurality of columns laterally arranged, and first light guide structure it is vertical with the arragement direction of the second light guide structure, it is adjacent to the first importing smooth surface, second incidence surface is equipped with the first light source assembly and secondary light source component, the leaded light is by using first structure and the matched combined of the second light guide structure, light is set independently to be propagated in the first light guide structure and the second light guide structure, reduce the receipts light ratio of light in subregion；Side entrance back module of the present invention is made using the light guide plate, reduces the crosstalk between subregion, can lift the overall display effect of backlight module.
Description
Technical field
The present invention relates to backlight display field, more particularly to a kind of light guide plate.
Background technology
Liquid crystal display (Liquid Crystal Display；LCD) because with high image quality, small volume, in light weight, low drive
The advantages that dynamic voltage and low consumpting power, it is widely used in personal digital assistant (PersonalDigital Assistant；
PDA), the communication of the consumer such as mobile phone, desktop displays, vehicle display or electronic product.It is common in the market
Liquid crystal display most of be backlight liquid crystal display, and it is mainly by positioned at the liquid crystal display panel of front end and after being located at
The backlight module at end is formed, and backlight module is according to entering light mode difference and can divide into side-light type to enter light (Edge Ligh
Ting) module enters two kinds of light (Bottom Lighting) module with straight-down negative.For the backlight module for entering light with side direction type, lead to
Often comprising a light guide plate and multiple light emitting diodes at light guide plate side, point-like light caused by the light emitting diode
Line, it is converted into uniform planar through light guide plate and lights, as the planar light source needed for liquid crystal display.With mobile device
Such as portable information products such as the popularization of intelligent electronic device in daily life, particularly small-medium size products, intelligent terminal
Significant progress is obtained, while constantly pursuing the display screen of high-resolution, high-contrast and narrow frame, user more payes attention to
Use comfort, simple operation and the hommization degree of mobile device；Multi-section display has turned into the selection of more and more users.
The Partitioned light-guiding of prior art backlight module is assembled by multiple light guide plates, and different zones light is because passing through leaded light
Gap between plate and produce briliancy and colourity drop.Consequently, it is possible to audience is by can be light because of the drop of above-mentioned briliancy and colourity
Easily find the gap between light guide plate.In addition, the assembling process trouble and aligning accuracy of assembled leaded light component require very high, even if
Assembling is good to be also possible to cause to offset because external force influences, and is produced the visual effect of light leak, therefore, how to be lighted in subregion
Caused bright line between uniformity and light-emitting zone is improved while luminous, further improved space also be present.
The content of the invention
The problem of to overcome briliancy caused by Partitioned light-guiding in the prior art and colourity drop, the present invention, which provides one kind, to be had
The light guide plate of preferable multi-section display effect.
In order to solve the above technical problems, technical scheme is as follows：The exiting surface enters with the first incidence surface, second
Smooth surface abuts, and the exiting surface is provided with the first light guide structure and the second light guide structure, and the first light guide structure uses a plurality of horizontal strokes
To the column of arrangement, and the first light guide structure is vertical with the arragement direction of the second light guide structure, be adjacent to the first importing smooth surface,
Second incidence surface is equipped with the first light source assembly and secondary light source component, and light is independent in the first light guide structure and the second guide-lighting knot
Propagated in structure, main output optical zone and time output optical zone are formed in the exiting surface.
Preferably, the column has the cross section of arc.
Preferably, the column has semicircular cross section.
Preferably, the column defines radius R as 15~35 μm, adjacent two columns spacing is that L is 5~20 μm, and
R/T is 1.5~2.5.
Preferably, the column is more than first to enter away from this close to its network point distribution density of the region of first incidence surface
Smooth surface network point distribution density.
Preferably, the second light guide structure surface uses one kind in V-arrangement array, U-shaped array or mirror surface structure.
The beneficial effects of the present invention are：By two kinds of microstructure designs of exiting surface of light guide plate, it is each to strengthen light guide plate
The convergence of the light of individual subregion, reduce the crosstalk of different light-emitting zone light, improve the screen accounting of display device simultaneously, when with
When above-mentioned sidelight type backlight module, reach optimal backlight module Region control.
Brief description of the drawings
Fig. 1 shows the structure front schematic view according to light guide plate of the present invention.
Fig. 2 is shown according to the second incidence surface partial schematic diagram of the invention.
Wherein, description of reference numerals is as follows：
10 first incidence surfaces；20 second incidence surfaces；
30 exiting surfaces；31 columns；
32 second light guide structures；40 first light source assemblies；
50 secondary light source components；R radiuses；L spacing.
Embodiment
The present invention is described in further detail with embodiment below in conjunction with the accompanying drawings：
Fig. 1 and Fig. 2 are referred to, light guide plate includes the first incidence surface 10, the first incidence surface 20 and exiting surface smooth surface 30, the light extraction
Face 30 abuts with the first incidence surface 10, the second incidence surface 20, and in the present embodiment, the light guide plate is in tabular, can be according to reality
Border needs to be arranged to other shapes, such as wedge shape.
The exiting surface 30 is provided with the first light guide structure 31 and the second light guide structure 32, and the second light guide structure 32 is using laterally
The geometry array of arrangement, adjacent first importing smooth surface 10, the first incidence surface 20 are equipped with the first light source assembly 40 and second
Light source assembly 50, and the exiting surface 30 is located at the both ends of the short side of light guide plate with lattice point structure inside light guide plate respectively.
In the present embodiment, the column 31 protrudes from the exiting surface 30；First light source assembly 40 emits beam from X-axis
Into the first incidence surface 10, secondary light source component 50 emits beam into the second incidence surface 20 from Y-axis, and each light source assembly is
Its adjacent guide-lighting region provides incident light,
In the present embodiment, the second light guide structure 32 is arranged in horizontal column, we define column radius be R be 15~
35 μm, light guide plate H, adjacent two columns spacing is that L is 5~20 μm, and R/L values are between 1.5~2.5.
In the present embodiment, the cross section of the second light guide structure 32 is semicircle, but is not limited to this, the second light guide structure
It can also be other structures, such as positioned at cambered surface, using above structure type, avoid light from the second incidence surface 20 towards adjacent
The light of subregion, and the light injected from the second incidence surface is all restrained towards the direction of the second light guide structure 32.
Table 1：
With reference to upper table 1, using the arc cylinder radius of the second light guide structure 32 as 30 μm, adjacent two shapes cylinder spacing is 15 μm, thickness
Exemplified by 0.33mm, the optically focused ratio reachable 8% of actually detected middle light guide plate.
In the present embodiment, when manufacturing the light guide plate, first with Ultraprecision Machining in light guide plate former material
The plural column 31 is cut out, the second guide-lighting micro-structural 32 is using accurate CUT processing forming V-shapes array, U-shaped array or minute surface knot
One kind in structure.
Because the first light guide structure 31 and the second light guide structure 32 are located in same light guide plate both ends, the first light source group respectively
Part 40 and secondary light source component selectively light the first light source assembly 40, secondary light source component 50 by backlight module independent control,
The light of first light source assembly 40 enters laterally light guide plate light, and now the longitudinal direction of secondary light source component 50 enters from light guide plate, due to two
Farther out, we adjust the quantity and position distribution of site inside light guide plate to group light source distance, close to the site of the first light source assembly
It is more smooth that distribution concentrates the luminance transition for making main output optical zone and time output optical zone to show.
It is appreciated that be only the position relationship for illustrating the first light guide structure 31 and the second light guide structure 32 in figure 1 above,
The size and number of the light guide structure 32 of column 31 and second can be adjusted as needed by being familiar with those skilled in the art.
Above content is to combine specific embodiment further description made for the present invention, it is impossible to assert this hair
Bright specific implementation is confined to these explanations, for general technical staff of the technical field of the invention, is not taking off
On the premise of from present inventive concept, some simple deduction or replace can also be made, should all be considered as belonging to the protection of the present invention
Scope.
Claims (6)
1. a kind of light guide plate, including the first incidence surface, the second incidence surface and exiting surface, it is characterised in that：The exiting surface and
One incidence surface, the adjoining of the second incidence surface, the exiting surface are provided with the first light guide structure and the second light guide structure, the first guide-lighting knot
Structure uses a plurality of columns laterally arranged, and the first light guide structure is vertical with the arragement direction of the second light guide structure, neighbouring
The first light source assembly and secondary light source component are equipped with the first importing smooth surface, the second incidence surface, light is independent guide-lighting first
Propagated in structure and the second light guide structure, main output optical zone and time output optical zone are formed in the exiting surface.
2. light guide plate as claimed in claim 1, it is characterised in that the column has the cross section of arc.
3. light guide plate as claimed in claim 1, it is characterised in that the column has semicircular cross section.
4. according to claim 2 kind of light guide plate, it is characterised in that it is 15~35 μm that the column, which defines radius R, phase
Adjacent two column spacing are that L is 5~20 μm, and R/T is 1.5~2.5.
5. a kind of light guide plate according to claim 1, it is characterised in that first light guide structure first enters light close to this
Its network point distribution density of the region in face is more than away from the first incidence surface network point distribution density.
6. light guide plate according to claim 1, it is characterised in that the second light guide structure surface is using V-arrangement array, U
One kind in type array or mirror surface structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711319731.2A CN107817550A (en) | 2017-12-12 | 2017-12-12 | Light guide plate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711319731.2A CN107817550A (en) | 2017-12-12 | 2017-12-12 | Light guide plate |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107817550A true CN107817550A (en) | 2018-03-20 |
Family
ID=61605278
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711319731.2A Pending CN107817550A (en) | 2017-12-12 | 2017-12-12 | Light guide plate |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107817550A (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20070016512A (en) * | 2005-08-04 | 2007-02-08 | 삼성전자주식회사 | Back light assembly and display device having the same |
| CN101196597A (en) * | 2006-12-08 | 2008-06-11 | 鸿富锦精密工业（深圳）有限公司 | Light conducting plate and back light module unit |
| CN101308284A (en) * | 2007-05-14 | 2008-11-19 | 奇美电子股份有限公司 | Backlight module, LCD device and its manufacture method |
| CN101655633A (en) * | 2005-06-13 | 2010-02-24 | 三星电子株式会社 | Backlight assembly, and display device having the same, and the method therefor |
| CN102401287A (en) * | 2011-07-27 | 2012-04-04 | 友达光电股份有限公司 | Backlight module |
| US20120287669A1 (en) * | 2010-01-13 | 2012-11-15 | Sharp Kabushiki Kaisha | Backlight, and display having a backlight |
| WO2017115472A1 (en) * | 2015-12-28 | 2017-07-06 | オムロン株式会社 | Light-guide plate, surface light source device, display device, and electronic apparatus |
| CN207528958U (en) * | 2017-12-06 | 2018-06-22 | 芜湖德仓光电有限公司 | Light guide plate |
-
2017
- 2017-12-12 CN CN201711319731.2A patent/CN107817550A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101655633A (en) * | 2005-06-13 | 2010-02-24 | 三星电子株式会社 | Backlight assembly, and display device having the same, and the method therefor |
| KR20070016512A (en) * | 2005-08-04 | 2007-02-08 | 삼성전자주식회사 | Back light assembly and display device having the same |
| CN101196597A (en) * | 2006-12-08 | 2008-06-11 | 鸿富锦精密工业（深圳）有限公司 | Light conducting plate and back light module unit |
| CN101308284A (en) * | 2007-05-14 | 2008-11-19 | 奇美电子股份有限公司 | Backlight module, LCD device and its manufacture method |
| US20120287669A1 (en) * | 2010-01-13 | 2012-11-15 | Sharp Kabushiki Kaisha | Backlight, and display having a backlight |
| CN102401287A (en) * | 2011-07-27 | 2012-04-04 | 友达光电股份有限公司 | Backlight module |
| WO2017115472A1 (en) * | 2015-12-28 | 2017-07-06 | オムロン株式会社 | Light-guide plate, surface light source device, display device, and electronic apparatus |
| CN207528958U (en) * | 2017-12-06 | 2018-06-22 | 芜湖德仓光电有限公司 | Light guide plate |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20180320 |