CN107132609A - local dimming light guide plate - Google Patents
local dimming light guide plate Download PDFInfo
- Publication number
- CN107132609A CN107132609A CN201710456048.7A CN201710456048A CN107132609A CN 107132609 A CN107132609 A CN 107132609A CN 201710456048 A CN201710456048 A CN 201710456048A CN 107132609 A CN107132609 A CN 107132609A
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- Prior art keywords
- led
- site
- region
- plate body
- transparent plate
- 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.)
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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
- 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
- G02B6/0033—Means for improving the coupling-out of light from the light guide
- G02B6/0058—Means for improving the coupling-out of light from the light guide varying in density, size, shape or depth along 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
- G02B6/0073—Light emitting diode [LED]
-
- 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
- G02B6/0081—Mechanical or electrical aspects of the light guide and light source in the lighting device peculiar to the adaptation to planar light guides, e.g. concerning packaging
- G02B6/0086—Positioning aspects
- G02B6/009—Positioning aspects of the light source in the package
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Engineering & Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Illuminated Signs And Luminous Advertising (AREA)
- Planar Illumination Modules (AREA)
Abstract
The present invention relates to a kind of light guide plate, specifically disclose a kind of local dimming light guide plate, including transparent plate body, LED is equiped with the side side of transparent plate body or two opposite sides side, transparent plate body is provided with least three regions parallel with LED installation side side, site is equipped with least three regions parallel with LED installation side side, the site Breadth Maximum parallel with the LED installation side side of transparent plate body close to LED to away from LED by being gradually reduced, this is local site change, dot shape changes with distance, there are constringent function and effect, and then photic-energy transfer can be adjusted, reach picture high-contrast effect.
Description
Technical field
The present invention relates to a kind of light guide plate, and in particular to a kind of local dimming light guide plate.
Background technology
Light guide plate is that the uniform light that light source is launched is distributed on various backlight modules using site, but existing net
Point is simple in construction single, i.e., stationing mode now is single site stationing mode, and dot shape is identical, light utilization
Low, diversity is high, and light regulating ability is weak, causes light can not be concentrated use in energy, side has specific effect during LED
Fruit such as Fig. 1, when two opposite sides have LED, wherein, LED is with certain frequency progress in actual use
Flash, specific effect such as Fig. 2 when the LED of both sides diverse location is lighted, when the LED of both sides same position is lighted
Specific effect such as Fig. 3.
The content of the invention
In order to solve the above technical problems, we have proposed a kind of local dimming light guide plate, its purpose：Dot shape with away from
From and change, adjust photic-energy transfer.
To reach above-mentioned purpose, technical scheme is as follows：
On a kind of local dimming light guide plate, including transparent plate body, the side side of transparent plate body or two opposite sides side
It is equiped with LED, transparent plate body is provided with least three and LED installation side parallel regions sideways, at least three and LED
Site is equipped with the parallel region in installation side side, the site maximum parallel with the LED installation side side of transparent plate body is wide
Degree close to LED to away from LED by being gradually reduced.
It is preferred that, the side side of transparent plate body is equiped with LED, and the LED installation side side of transparent plate body is plane,
Transparent plate body is provided with three regions parallel with LED installation side side, three regions and is equipped with site, close to LED
Region on site be that site on circular shaped lattice point, the region away from LED is linear site, on interjacent region
Site be oval site.
It is preferred that, the dot shape on the region away from LED is changed to by the dot shape on the region of LED
The setting rule of change is below equation：
D=k1In (x) -1.8255；
A=-0.3333d3+3.2143d2-6.4524d+k2；
B=-0.3d3+2.1929d2-4.1071d+k3；
Wherein, x is segmentation group number, and d is spacing distance, and a is the semi-major axis value of site, and b is the short axle value of site, k1, k2
It is constant with k3, spacing distance is the distance between center of LED and site, and segmentation group number is zone number, and region is compiled
1,2 and 3 are followed successively by away from the region of LED number by the region close to LED, when site is in the region near LED
When, zone number is 1, i.e., x values are 1, and when site is in farthest away from the region of LED, zone number is 3, i.e. x values are
3。
According to another embodiment of the invention, LED, two phases are equiped with two opposite sides side of transparent plate body
Symmetrically, the LED installation side side of transparent plate body is to be set on plane, transparent plate body for the position of LED on contralateral sides
Have and be equipped with site on six regions parallel with LED installation side side, six regions, the site close to the part of LED
For circular shaped lattice point, the site of the part away from LED is linear site, is near the region of LED and farthest away from LED
Region between region on site be oval site.
According to another embodiment of the invention, it is changed to by the dot shape on the region of LED away from LED
Region on dot shape change setting rule be below equation：
D=k1In (x) -1.8255；
A=-0.3333d3+3.2143d2-6.4524d+k2；
B=-0.3d3+2.1929d2-4.1071d+k3；
Wherein, x is segmentation group number, and d is spacing distance, and a is the semi-major axis value of site, and b is the short axle value of site, k1, k2
It is constant with k3, spacing distance is the distance between center of LED and site, and segmentation group number is zone number, and region is compiled
1,2 and 3 are followed successively by away from the part of LED number by the part close to LED, when site is in the region near LED
When, zone number is 1, i.e., x values are 1, and when site is in farthest away from the region of LED, zone number is 3, i.e. x values are
3。
By above-mentioned technical proposal, transparent plate body is provided with least 3 networking points, and the side side of transparent plate body is provided with LED
Lamp, the site Breadth Maximum parallel with the LED installation side side of transparent plate body close to LED to away from LED by gradually contracting
Small, this is local site change, and dot shape changes with distance, has constringent function and effect, and then can be adjusted
Photic-energy transfer is saved, picture high-contrast effect is reached.
Brief description of the drawings
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
There is the accompanying drawing used required in technology description to be briefly described, it should be apparent that, drawings in the following description are only this
Some embodiments of invention, for those of ordinary skill in the art, on the premise of not paying creative work, can be with
Other accompanying drawings are obtained according to these accompanying drawings.
The effect of single site stationing mode when Fig. 1 is equiped with LED for the side single in the prior art side of the present invention
Fruit schematic diagram；
Fig. 2 is equiped with single site stationing mode during LED for the side of two opposite sides in the prior art of the present invention
The effect diagram when LED lamp of both sides diverse location is lighted during use；
Fig. 3 is equiped with single site stationing mode during LED for the side of two opposite sides in the prior art of the present invention
The effect diagram when LED lamp of both sides same position is lighted during use；
A kind of structural representation for local dimming light guide plate that Fig. 4 is announced by the embodiment of the present invention 1；
Fig. 5 is a kind of effect diagram of local dimming light guide plate disclosed in the embodiment of the present invention 1；
A kind of structural representation for local dimming light guide plate that Fig. 6 is announced by the embodiment of the present invention 2；
Fig. 7 is a kind of local dimming light guide plate both sides diverse location in use disclosed in the embodiment of the present invention 2
Effect diagram of LED lamp when lighting；
Fig. 8 is a kind of local dimming light guide plate both sides same position in use disclosed in the embodiment of the present invention 2
Effect diagram of LED lamp when lighting；
Fig. 9 is oval schematic diagram disclosed in this invention；
Figure 10 is the spacing distance change curve between site disclosed in this invention；
Figure 11 is the length change curve map of the semi-major axis of site disclosed in this invention；
Figure 12 is the length change curve map of the short axle of site disclosed in this invention.
Numeral and the corresponding component title represented by letter in figure：
1. the linear site in the oval site 4. of 2. circular shaped lattice point of transparent plate body 11.LED lamps 3..
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Site preparation is described, it is clear that described embodiment is only a part of embodiment of the invention, rather than whole embodiments.It is based on
Embodiment in the present invention, it is every other that those of ordinary skill in the art are obtained under the premise of creative work is not made
Embodiment, belongs to the scope of protection of the invention.
The embodiment of the present invention is described in further detail with reference to schematic diagram.
As shown in figure 4, a kind of local dimming light guide plate, including transparent plate body 1, the side side of transparent plate body 1 is equiped with
LED 11, transparent plate body 1 is provided with three regions parallel with the installation side of LED 11 side, three and the installation side of LED 11
Be equipped with site on parallel region sideways, the site Breadth Maximum parallel with the installation side of LED 11 side of transparent plate body 1 by
It is gradually reduced close to LED 11 to away from LED 11.
The installation side of LED 11 side of transparent plate body 1 is plane, and transparent plate body 1 is provided with three and the installation side of LED 11
Site is equipped with parallel region sideways, three regions, the site on the region of LED lamps 11 is circular shaped lattice point 2, far
It is that the site on linear site 4, interjacent region is oval site 3 from the site on the region of LED 11.
The dot shape being changed to by the dot shape on the region of LED 11 on the region away from LED 11 becomes
The setting rule of change is below equation：
D=k1In (x) -1.8255；
A=-0.3333d3+3.2143d2-6.4524d+k2；
B=-0.3d3+2.1929d2-4.1071d+k3；
Wherein, x is segmentation group number, and d is spacing distance, and a is the semi-major axis value of site, and b is the short axle value of site, k1, k2
It is constant with k3, spacing distance is the distance between center of LED and site, and segmentation group number is zone number, and region is compiled
1,2 and 3 are followed successively by away from the region of LED 11 number by the region close to LED 11, when site is near LED 11
Region when, zone number is 1, i.e., x values be 1, when the interjacent region in site, zone number is 2, i.e. x values are
2, when site is in farthest away from the region of LED 11, zone number is 3, i.e., x values are 3.
As shown in figure 5, compared to Figure 1, single site stationing mode LED sidelights line, which more disperses change, to be concentrated, and
Local site change, dot shape changes with distance, has constringent function and effect, and then luminous energy point is adjusted
Cloth, reaches picture high-contrast effect.
The specific derivation of setting rule of dot shape change is as follows：
It is distributed on light guide plate under condition one, general case, including the exiting surface reflecting surface relative with exiting surface, reflecting surface
Some sites.
Condition two, net-pont design mode is is changed to line style site, i.e. ellipticity from 1 to 0 by circular shaped lattice point, according to ellipse
Circle rate principle, formula is as follows, such as Fig. 7：
Ellipticity formula=b/a, a is the oval semi-major axis defined, and b is the oval short axle defined, ellipticity
For 1 when it is as round, ellipticity is the change that value between 1 and 0 is between ellipse, and ellipticity is line style when being 0.
From site from LED sides to away from LED sides distance change according to the formula d=8.9666ln (x) calculated-
1.8255, wherein d are spacing distance, and spacing distance is the distance between center of LED and site, and x is segmentation group number, segmentation
Group number is zone number, and zone number is followed successively by 1,2 and 3 by the region close to LED 11 to the region away from LED 11, when
When site is near the region of LED 11, zone number is 1, i.e., x values are 1, when the interjacent region in site,
Zone number is 2, i.e., x values are 2, and when site is in farthest away from the region of LED lamps 11, zone number is 3, i.e. x values are
3,8.9666 be setting value k1, and setting value k1 is constant, and change curve is illustrated in fig. 10 shown below.
Site size and the change at interval are computed, a site semi-major axis (a) can be obtained with short axle (b) with interval variation
Relational expression, following relational expression, as follows respectively:
A=-0.3333d3+3.2143d2-6.4524d+4.6
B=-0.3d3+2.1929d2-4.1071d+3.22
Wherein, 4.6 be setting value k2, and 3.22 be setting value k3, and setting value k2 and k3 are constant.
Change curve is as follows, shown in Figure 11 and Figure 12.
It is exactly the design feature and calculating mechanism of a kind of local dimming light guide plate, its advantage above：Site is with distance
Change, adjust photic-energy transfer, reach the effect of picture high-contrast.
Embodiment 2.
As shown in fig. 6, a kind of local dimming light guide plate, remaining is same as Example 1, and institute's difference is described transparent
The position for the LED 11 being equiped with two opposite sides side of plate body 1 on LED 11, two opposite sides side is symmetrical,
The installation side of LED 11 side of transparent plate body 1 is plane, and transparent plate body 1 is parallel with the installation side of LED 11 side provided with three
Region, be equipped with site on three regions, be circular shaped lattice point 2 close to the site of the part of LED 11, away from LED 11
Partial site is linear site 4, is near the region of LED 11 and farthest away from the region between the region of LED 11
On site be oval site 3.
The dot shape being changed to by the dot shape on the part of LED 11 on the part away from LED 11 becomes
The setting rule of change is below equation：
D=k1In (x) -1.8255；
A=-0.3333d3+3.2143d2-6.4524d+k2；
B=-0.3d3+2.1929d2-4.1071d+k3；
Wherein, x is segmentation group number, and d is spacing distance, and a is the semi-major axis value of site, and b is the short axle value of site, k1, k2
It is constant with k3, spacing distance is the distance between center of LED and site, and segmentation group number is zone number, and region is compiled
1,2 and 3 are followed successively by away from the part of LED 11 number by the part close to LED 11, when site is near LED 11
Region when, zone number is 1, i.e., x values be 1；When site is near the region of LED 11 and farthest away from LED 11
Region between region when, zone number be 2, x values be 2；When site is in farthest away from the region of LED 11, region
Numbering is 3, i.e., x values are 3.
Do not make special limitation herein yet, equally belong to protection scope of the present invention.It sets rule specifically to derive
Process is also same as Example 1, will not be repeated here.
LED is flashed with certain frequency in actual use, when the first of the transparent side of plate body 1
When individual LED 11 and the 3rd LED 11 of the opposite side of transparent plate body 1 are lighted, the light guide effect of the local dimming light guide plate is such as
Shown in Fig. 7, understood compared with Fig. 2, single site stationing mode LED sidelights line, which more disperses change, to be concentrated, and local area network
Point change, dot shape changes with distance, there is constringent function and effect, and then photic-energy transfer is adjusted, and reaches
Picture high-contrast effect.
LED is flashed with certain frequency in actual use, when the transparent both sides identical bits of plate body 1
The LED 11 put is while when lighting, and the light guide effect of the local dimming light guide plate is single as shown in figure 8, understood compared with Fig. 3
Site stationing mode LED sidelights line, which more disperses change, to be concentrated, and local site change, and dot shape changes with distance
Become, there is constringent function and effect, and then photic-energy transfer is adjusted, reach picture high-contrast effect.
In summary, single site stationing mode LED sidelights line, which more disperses change, to concentrate, and local site becomes
Change, dot shape changes with distance, there is constringent function and effect, and then photic-energy transfer is adjusted, and reaches picture
High-contrast effect.
Above-described is only the preferred embodiment of the present invention, it is noted that for one of ordinary skill in the art
For, without departing from the concept of the premise of the invention, various modifications and improvements can be made, these belong to the present invention
Protection domain.
Claims (5)
1. a kind of local dimming light guide plate, it is characterised in that including transparent plate body (1), the side side of transparent plate body (1) or two
LED (11) is equiped with individual opposite side side, transparent plate body (1) is provided with least three and LED (11) installation side side
Site, site and transparent plate body are equipped with parallel region, at least three regions parallel with LED (11) installation side side
(1) LED (11) installation side parallel Breadth Maximum in side close to LED (11) to away from LED (11) by being gradually reduced.
2. a kind of local dimming light guide plate according to claim 1, it is characterised in that the side side of transparent plate body (1)
LED (11) is equiped with, LED (11) installation side side of transparent plate body (1) is plane, and transparent plate body (1) is provided with three
Site is equipped with the region parallel with LED (11) installation side side, three regions, on the region of LED (11)
Site is that the site on circular shaped lattice point (2), the region away from LED (11) is on linear site (4), interjacent region
Site is oval site (3).
3. a kind of local dimming light guide plate according to claim 2, it is characterised in that by the region close to LED (11)
On the setting rule of dot shape change that is changed on the region away from LED (11) of dot shape be below equation：
D=k1In (x) -1.8255；
A=-0.3333d3+3.2143d2-6.4524d+k2；
B=-0.3d3+2.1929d2-4.1071d+k3；
Wherein, x is segmentation group number, and d is spacing distance, and a is the semi-major axis value of site, and b is the short axle value of site, k1, k2 and k3
As constant, spacing distance is the distance between center of LED and site, and segmentation group number is zone number, zone number by
1,2 and 3 are followed successively by the region away from LED (11) close to the region of LED (11), when site is near LED
(11) during region, zone number is 1, i.e., x values are 1, when site is in farthest away from the region of LED (11), and region is compiled
Number it is that 3, i.e. x values are 3.
4. a kind of local dimming light guide plate according to claim 1, it is characterised in that two of transparent plate body (1) are relative
The position for the LED (11) being equiped with the side of side on LED (11), two opposite sides side is symmetrical, transparent plate body (1)
LED (11) installation side side be plane, transparent plate body (1) provided with six with LED (11) installation side sideways it is parallel
Site is equipped with region, six regions, is circular shaped lattice point (2) close to the site of the part of LED (11), away from LED
(11) site of part be linear site (4), be in close to LED (11) region and away from LED (11) region it
Between region on site be oval site (3).
5. a kind of local dimming light guide plate according to claim 4, it is characterised in that by the region close to LED (11)
On the setting rule of dot shape change that is changed on the region away from LED (11) of dot shape be below equation：
D=k1In (x) -1.8255；
A=-0.3333d3+3.2143d2-6.4524d+k2；
B=-0.3d3+2.1929d2-4.1071d+k3；
Wherein, x is segmentation group number, and d is spacing distance, and a is the semi-major axis value of site, and b is the short axle value of site, k1, k2 and k3
As constant, spacing distance is the distance between center of LED and site, and segmentation group number is zone number, zone number by
1,2 and 3 are followed successively by the part away from LED (11) close to the part of LED (11), when site is near LED
(11) during region, zone number is 1, i.e., x values are 1, when site is in farthest away from the region of LED (11), and region is compiled
Number it is that 3, i.e. x values are 3.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710456048.7A CN107132609A (en) | 2017-06-16 | 2017-06-16 | local dimming light guide plate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710456048.7A CN107132609A (en) | 2017-06-16 | 2017-06-16 | local dimming light guide plate |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107132609A true CN107132609A (en) | 2017-09-05 |
Family
ID=59735131
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710456048.7A Pending CN107132609A (en) | 2017-06-16 | 2017-06-16 | local dimming light guide plate |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102261575B (en) * | 2010-05-28 | 2014-07-16 | 鸿富锦精密工业（深圳）有限公司 | Backlight module |
| CN104880756A (en) * | 2014-02-27 | 2015-09-02 | 苏州璨宇光学有限公司 | Light guide plate and backlight module |
| CN104977649A (en) * | 2015-06-25 | 2015-10-14 | 东莞轩朗实业有限公司 | Light guide plate and laser dotting light guide plate production method |
| CN206301058U (en) * | 2016-12-31 | 2017-07-04 | 东莞市现代精工实业有限公司 | A kind of light conducting plate structure |
-
2017
- 2017-06-16 CN CN201710456048.7A patent/CN107132609A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102261575B (en) * | 2010-05-28 | 2014-07-16 | 鸿富锦精密工业（深圳）有限公司 | Backlight module |
| CN104880756A (en) * | 2014-02-27 | 2015-09-02 | 苏州璨宇光学有限公司 | Light guide plate and backlight module |
| CN104977649A (en) * | 2015-06-25 | 2015-10-14 | 东莞轩朗实业有限公司 | Light guide plate and laser dotting light guide plate production method |
| CN206301058U (en) * | 2016-12-31 | 2017-07-04 | 东莞市现代精工实业有限公司 | A kind of light conducting plate structure |
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Application publication date: 20170905 |