CN201096908Y - Optical expansion component - Google Patents
Optical expansion component Download PDFInfo
- Publication number
- CN201096908Y CN201096908Y CNU2007201277144U CN200720127714U CN201096908Y CN 201096908 Y CN201096908 Y CN 201096908Y CN U2007201277144 U CNU2007201277144 U CN U2007201277144U CN 200720127714 U CN200720127714 U CN 200720127714U CN 201096908 Y CN201096908 Y CN 201096908Y
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- light source
- optical microstructures
- diffusion component
- optics diffusion
- light
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- Liquid Crystal (AREA)
Abstract
The utility model relates to an optical diffusing component, which is mainly provided with a board body. A plurality of light sources are arranged at one side of the board body; wherein, a plurality of optical fine structures with long shafts and short shafts are arranged on the board body, because the curvature rate of the short shaft is larger than the curvature rate of the long shaft, the diffusing effect in the long shaft direction is not better than the diffusing effect in the short shaft direction, moreover the direction of the long shaft utilizing each optical fine structure and the extension direction of the light source are arranged slightly in parallel, or the short shaft direction of each optical fine structure and the extension direction of the light source slightly are arranged orthogonally, to ensure that each light source can get the better diffusing effect through the short shaft of the optical fine structure, the light intensity among each light source can be increased, to eliminate the dark band area among the light sources, in order to enhance the brilliance of the entire backlight module.
Description
Technical field
The utility model relates to a kind of optics diffusion component, aims to provide a kind of being applied in the backlight module, can more effectively distribute the light of light source, to improve the briliancy of whole backlight module.
Background technology
Backlight module (Backlight module) general reference can provide the assembly of a back side light source of product, be used at present on various information, communication, the consumer products, as: LCD (LiquidCrystal Display, LCD), product such as negative film scanner, lantern slide viewbox.Difference according to its light source incoming position, backlight module can be divided into but side-light type (edge lighting) and two kinds of straight-down negatives (bottom lighting), side light type back light module normally is applied to portable type computing machine etc. for example and requires on power saving and the frivolous product.In order to reach frivolous requirement, normally place light source, and, the photoconduction of light source outgoing is caused on the display panel by light guide plate (Light guide plate) in the side of backlight module.
Direct type backlight module, for example normally being applied to, TV etc. need possess on the product of high brightness, be illustrated in figure 1 as in the known direct type backlight module 1, possesses a housing 11, these housing 11 inner faces generally are coated with the reflective coating that can do the light reflection, or be pasted with one deck reflectance coating 12, to do the reflection of light source; A plurality of light sources 13 have been spaced again in regular turn, and one diffuser plate 14 is set in light source 13 tops, then dispose one or more optical diffusion film sheet 15 and one or more brightening film sheet 16 combines with display panel 17 at last again, and form a Thin Film Transistor-LCD (TFT-LCD) in diffuser plate 14 tops.
Again, because the effect of optics diffusion components such as diffuser plate or diffusion sheet is only evenly spread at the light that order is passed through, Liquid Crystal Module is bright for improving, the effect of blanking bar district phenomenon is limited, therefore be the gap that some backlight module painstakingly elongates light source 12 and diffuser plate 13, in the hope of enlarging the scope that each light source 12 enters diffuser plate 13, reach the purpose of dwindling dim zone; Yet so not only effect is quite limited for structural design, and the thickness of backlight module will be increased, and disagrees with the lightening design original intention of Liquid Crystal Module.
And the manufacturing of existing optics diffusion component can be divided into two kinds of kenels: a kind of is to be that substrate surface forms the microstructure of diffusion usefulness; Another kind is that particulate is coated substrate surface, or with little rock blending in base material.Particulate rubbing method Chang Wufa reaches high uniformity and high process rate, and the particle coating weight is limited, so diffusivity can't promote easy again simultaneously other assembly of scratch.Particulate blending method can improve diffusivity, but transmittance is lower.
The microstructure that forms at substrate surface is mainly two kinds of kenels: the frosted glass formula structure that scrambling rises and falls and the micromirror structure (lens array) of systematicness.Wherein frosted glass formula structure is the early stage optical scattering structure that uses, but its diffusivity is low, and dispersal direction also is to be randomness, can't be at the diffusion of making specific direction as fluorescent tube.The micromirror structure of column can be controlled the light dispersal direction effectively, existing design has continuous circular arc, sinusoidal waveform, triangle, square etc., for example U.S. Patent Publication case US2003/0184993A1 and Jap.P. spy open the revealer of 2000-75102 institute, US2003/0184993A1 is applied to the lens set microstructure to reach diffusion effect in the direct type backlight module of LCD.The spy opens 2000-75102 and then the sinusoidal waveform eyeglass is applied in the design of light collecting plate.Wherein the design with the continuous arc more than semicircle has best light diffusing (arrow is represented the light beam of incident) shown in Fig. 2 A, B, and the column lenticule of sine-shaped column lenticule 18 or other waveform can't reach the effect of even divergent light source; So the structure of above-mentioned various optics diffusion components is commonly used backlight module in order to solution and is obviously presented bright, blanking bar district, still has the space of further improvement.
The utility model content
In view of this, the purpose of this utility model is to provide a kind of and is applied in the backlight module, can increase the light quantity between each light source, to improve the optics diffusion component of whole brilliancy of backlight module.
The technical scheme of the utility model optics diffusion component is: this optics diffusion component mainly is provided with a plate body, and plural light source then is located at plate body one side, evenly sheds after making light that light source sends by this optics diffusion component; Wherein, comprise the plural optical microstructures of the long and short axle of tool on this plate body, the long axis direction of each optical microstructures and the bearing of trend of light source slightly are and are arranged in parallel.
Because the curvature of this minor axis is greater than the curvature of major axis, so the diffusion effect at long axis direction is poor than short-axis direction, and the bearing of trend that utilizes the long axis direction of each optical microstructures and light source slightly is and is arranged in parallel, the perhaps slightly orthogonal thereto arrangement of the bearing of trend of the short-axis direction of each optical microstructures and light source, make each light source obtain preferable diffusion effect through the minor axis of optical microstructures, light quantity between each light source is increased, use eliminate each light source between dim zone, to improve the briliancy of whole backlight module.
The beneficial effects of the utility model are:
1, this optical microstructures has long and short axle, and produces different diffusion effects, can distribute the light of light source effectively.
2, utilizing the bearing of trend of the long axis direction of each optical microstructures and light source slightly to be is arranged in parallel, the perhaps slightly orthogonal thereto arrangement of the bearing of trend of the short-axis direction of each optical microstructures and light source, make each light source obtain preferable diffusion effect through the minor axis of optical microstructures, light quantity between each light source is increased, use eliminate each light source between dim zone, to improve the briliancy of whole backlight module.
When 3, this optics diffusion component is applied to the 3D three-dimensional display, the optics diffusion component is arranged between first and second liquid crystal panel, can improve to practise has the 3D three-dimensional display to produce net wrong effect (moire), and visually can produce the shortcoming of bright dark ripples line.
Description of drawings
Fig. 1 is the structural representation of general direct type backlight module;
Fig. 2 A, B are for practising the structural drawing that the optics diffusion component is arranged;
Fig. 3 is the structural perspective of optics diffusion component and light source in the utility model;
Fig. 4 is the structural representation of optics diffusion component first embodiment in the utility model;
Fig. 5 is the structural representation of A-A direction among Fig. 3;
Fig. 6 is the structural representation of optics diffusion component second embodiment in the utility model;
Fig. 7 is the structural representation of optics diffusion component the 3rd embodiment in the utility model;
Fig. 8 is the structural representation of optics diffusion component the 4th embodiment in the utility model;
Fig. 9 is the structural representation of optics diffusion component the 5th embodiment in the utility model;
Figure 10 is applied to the structural perspective of backlight module for optics diffusion component in the utility model.
[figure number explanation]
Light P1 major axis amount of light P2
Minor axis amount of light P3 direct type backlight module 1
Optical diffusion film sheet 15 brightening film sheets 16
Optics diffusion component 2 plate bodys 21
Bearing of trend 31 first liquid crystal panels 4
Second liquid crystal panel 5
Embodiment
For the clear structure of the present utility model of your auditor is formed, and the overall operation mode, cooperate graphic being described as follows now:
The utility model optics diffusion component, as shown in Figure 3, this optics diffusion component 2 mainly is provided with a plate body 21, this plate body 21 is provided with incidence surface 211 and the exiting surface 212 relative with incidence surface 211, plural light source 3 then is located at incidence surface 211 belows of plate body 21 1 sides, evenly sheds after making light that light source 3 sends by this optics diffusion component 2.
Focusing on of this case: the plural optical microstructures 22 that comprises the long and short axle of tool on this plate body 21, please consult simultaneously shown in first embodiment of Fig. 4, each optical microstructures 22 is located on the exiting surface 212, and each optical microstructures 22 can be ellipse in the projection of this exiting surface 212, please consult each optical microstructures 22 shown in Figure 5 simultaneously and be oval hemispheric structure, it has major axis 221 and minor axis 222, and the bearing of trend 31 of these major axis 221 directions and light source 3 slightly is and is arranged in parallel.
During whole the use, because the curvature of this minor axis 222 is greater than the curvature of major axis 221, so the diffusion effect in major axis 221 directions is poor than minor axis 222 directions, please consult shown in Figure 5 simultaneously, and the bearing of trend 31 that utilizes major axis 221 directions of each optical microstructures and light source 3 slightly is and is arranged in parallel, the light P1 (supposing that light quantity is 100%) that makes light source 3 is when entering optical microstructures 22, obtain relatively poor diffusion effect (if major axis amount of light P2 is 40%) through major axis 221, then obtain preferable diffusion effect (then minor axis amount of light P3 is 60%) through minor axis 222, that is it is lower towards the bearing of trend 31 resulting amount of lights of light source 3, and it is higher towards the amount of light of 3 of each light sources, light quantity between each light source is increased, use the dim zone of eliminating between each light source, to improve the briliancy of whole backlight module.
Among second embodiment as shown in Figure 6, be provided with the optical microstructures 22 of plural arrangement at random equally in the exiting surface 212 of plate body 21, and each optical microstructures 22 is oval hemispheric structure, it has major axis 221 and minor axis 222, the bearing of trend 31 of these major axis 221 directions and light source 3 slightly is and is arranged in parallel, and has the comparatively intensive optical microstructures of arrangement 22 with respect to light source 3 tops; Moreover each optical microstructures 22 can also be the structure of rectangular column, shown in the 3rd embodiment as shown in Figure 7.
Among the 4th embodiment as shown in Figure 8, be provided with the optical microstructures 22 of plural arrangement at random equally in the exiting surface 212 of plate body 21, and each optical microstructures 22 is the structure of rhombus column, it has major axis 221 and minor axis 222, the slightly orthogonal thereto arrangement of bearing of trend 31 of these minor axis 222 directions and light source 3.
Among the 5th embodiment as shown in Figure 9, exiting surface 212 in plate body 21 is provided with plural optical microstructures 22 equally, each optical microstructures 22 protrudes from the surface of exiting surface 212, can be further be provided with plural optical microstructures 22, and each optical microstructures 22 is recessed in the surface of incidence surface 211 in the incidence surface 211 of plate body 21.
Be applied to the structural perspective of backlight module as shown in figure 10 for optics diffusion component in the utility model, 2 of this light source 3 and optics diffusion components are provided with one first liquid crystal panel 4, these optics diffusion component 2 tops then are provided with one second liquid crystal panel 5, to have the 3D three-dimensional display of stereopsis performance, also be provided with plural optical microstructures 22 on the exiting surface 212 of its optics diffusion component 2, can improve to practise has the 3D three-dimensional display to produce net wrong effect (moire), and visually can produce the shortcoming of bright dark ripples line.
So the utility model has compared to habit and has following advantage:
1, this optical microstructures has long and short axle, and produces different diffusion effects, can distribute the light of light source effectively.
2, utilizing the bearing of trend of the long axis direction of each optical microstructures and light source slightly to be is arranged in parallel, the perhaps slightly orthogonal thereto arrangement of the bearing of trend of the short-axis direction of each optical microstructures and light source, make each light source obtain preferable diffusion effect through the minor axis of optical microstructures, light quantity between each light source is increased, use eliminate each light source between dim zone, to improve the briliancy of whole backlight module.
When 3, this optics diffusion component is applied to the 3D three-dimensional display, the optics diffusion component is arranged between first and second liquid crystal panel, can improve to practise has the 3D three-dimensional display to produce net wrong effect (moire), and visually can produce the shortcoming of bright dark ripples line.
As mentioned above, the utility model provides another preferable feasible optics diffusion component, and the application of novel patent is offered in the whence in accordance with the law; Only, above implementation and graphic shown in, the utility model preferred embodiment person, be not to limit to the utility model with this, be with, approximate with structure of the present utility model, device, feature etc. such as, identical person all should belong to of the present utility model founding within purpose and the claim.
Claims (7)
1. optics diffusion component, this optics diffusion component mainly is provided with a plate body, and plural light source then is located at plate body one side; It is characterized in that:
The plural optical microstructures that comprises the long and short axle of tool on this plate body, the long axis direction of each optical microstructures and the bearing of trend of light source slightly are and are arranged in parallel the perhaps slightly orthogonal thereto arrangement of the bearing of trend of the short-axis direction of each optical microstructures and light source.
2. optics diffusion component according to claim 1 is characterized in that this plate body is provided with incidence surface and the exiting surface relative with incidence surface, and each optical microstructures is located on the exiting surface.
3. optics diffusion component according to claim 1, it is characterized in that, this plate body is provided with incidence surface and the exiting surface relative with incidence surface, the plural number light source then is arranged at the incidence surface below, each optical microstructures is located on the exiting surface, and has the comparatively intensive optical microstructures of arrangement with respect to the light source top.
4. as optics diffusion component as described in the claim 2, it is characterized in that each optical microstructures is in the ellipse that is projected as of this exiting surface.
5. optics diffusion component according to claim 1 is characterized in that, each optical microstructures is the structure of oval hemispherical, rhombus column or rectangular column.
6. optics diffusion component according to claim 1, it is characterized in that, this plate body is provided with incidence surface and the exiting surface relative with incidence surface, the plural number light source then is arranged at the incidence surface below, each optical microstructures is located on the exiting surface, and being provided with one first liquid crystal panel between light source and optics diffusion component, this optics diffusion component top then is provided with one second liquid crystal panel.
7. as optics diffusion component as described in the claim 2,3 or 6, it is characterized in that each optical microstructures further is located on the incidence surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201277144U CN201096908Y (en) | 2007-08-08 | 2007-08-08 | Optical expansion component |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201277144U CN201096908Y (en) | 2007-08-08 | 2007-08-08 | Optical expansion component |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201096908Y true CN201096908Y (en) | 2008-08-06 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007201277144U Expired - Fee Related CN201096908Y (en) | 2007-08-08 | 2007-08-08 | Optical expansion component |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201096908Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102072433B (en) * | 2009-11-23 | 2012-11-21 | 群康科技(深圳)有限公司 | Backlight module and optical board thereof |
| CN106547045A (en) * | 2017-01-12 | 2017-03-29 | 苏州向隆塑胶有限公司 | Light guide plate, backlight module and optical microstructures processing method |
-
2007
- 2007-08-08 CN CNU2007201277144U patent/CN201096908Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102072433B (en) * | 2009-11-23 | 2012-11-21 | 群康科技(深圳)有限公司 | Backlight module and optical board thereof |
| CN106547045A (en) * | 2017-01-12 | 2017-03-29 | 苏州向隆塑胶有限公司 | Light guide plate, backlight module and optical microstructures processing method |
| CN106547045B (en) * | 2017-01-12 | 2019-06-25 | 苏州茂立光电科技有限公司 | Light guide plate, backlight module and optical microstructures processing method |
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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 |
Granted publication date: 20080806 Termination date: 20140808 |
|
| EXPY | Termination of patent right or utility model |