CN103149611A - Prismatic lens and liquid crystal display device using prismatic lens - Google Patents
Prismatic lens and liquid crystal display device using prismatic lens Download PDFInfo
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- CN103149611A CN103149611A CN 201310073877 CN201310073877A CN103149611A CN 103149611 A CN103149611 A CN 103149611A CN 201310073877 CN201310073877 CN 201310073877 CN 201310073877 A CN201310073877 A CN 201310073877A CN 103149611 A CN103149611 A CN 103149611A
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Abstract
The invention provides a prismatic lens which is used for modulating light. The prismatic lens comprises a main body part and a plurality of rows of prisms arranged on the main body part. The main body part comprises a first side of a main body, and a second side of the main body, which is relative to the first side of the main body. The rows of prisms are arrayed on the main body part in parallel from the first side of the main body to the second side of the main body; and the density of a unit area of the prisms which are adjacent to the first side of the main body is lower than the density of the unit area of the prisms which are adjacent to the second side of the main body. The invention further provides a liquid crystal display device using the prismatic lens. The prismatic lens disclosed by the invention has the advantages of being capable of giving compensation on the light in a specific direction and generating a tapered light condensation effect; and the invention provides the liquid crystal display device with a wide visual angle.
Description
Technical field
The present invention relates to a kind of prismatic lens and use the liquid crystal indicator of this prismatic lens.
Background technology
Thereby liquid crystal display is controlled transmittance demonstration information by the rotation of liquid crystal molecule, and existing modal TN type liquid crystal technology is the most ripe, and the scope of application is the widest, but there is visible angle deficiency less than normal in it.Because TN type liquid crystal reverses, general TN type liquid crystal display when watching screen from the screen top, is easily seen the major axis of liquid crystal molecule after applying voltage, and light transmission capacity is large, and screen can be crossed bright and turn white, and contrast is low; When watching screen from screen below, easily see the minor axis of liquid crystal molecule, light transmission capacity is little, and screen can be excessively dark, causes transmittance uneven, and display effect is not good.Simultaneously, the transmittance inequality can cause the gray-scale inversion phenomenon, the direction of namely easily seeing long axis of liquid crystal molecule shows that the gray scale of low GTG is higher than the gray scale of high gray, thereby when causing watching screen from the direction of easily seeing long axis of liquid crystal molecule, formerly should show that the viewing area of black can brighten at human eye, and former viewing area that should display white can be dimmed at human eye, the picture serious distortion.Common method is to stick one deck optical compensation films outside screen panel, and visible angle is increased, but needs to add extra cost, and can't improve the gray-scale inversion phenomenon.
For improving the problem of TN type liquid crystal visible angle deficiency, people begin to make an issue of on the prismatic lens of backlight assembly.Disclosed a kind of backlight assembly of liquid crystal display in patent CN200410095781, wherein prismatic lens comprises a plurality of prisms, each is shaped as the form of scalene triangle prism, and each is given prominence to has two base angles of not waiting each other, with the adjustable liquid crystal display display viewing angles.But can cause light transmission capacity uncontrollable with the scalene triangle prism design, can't do compensation for relatively poor zone, TN type liquid crystal visual angle, and its photoconduction is to only past same direction, so can cause other visual angle irregular colour, the luminance contrast ratio of panel is declined to a great extent, and found by human eye.Disclosed a kind of backlight assembly of liquid crystal display in patent CN200880000121, wherein prismatic lens comprises be used to the first prism facets of injecting light and the second prism facets, the first prism facets is linearity, the second prism facets is circular-arc, with adjustable visual angle, but its photoconduction so can cause other visual angle irregular colour to only toward same direction, the luminance contrast ratio of panel is declined to a great extent, and found by human eye.Summary of the invention
Given this, be necessary to provide a kind of prismatic lens that can be compensated to specific direction light and the liquid crystal indicator that uses this prismatic lens.
A kind of prismatic lens, it is used for light is modulated.Described prismatic lens comprises a main part and is arranged on multirow prism on described main part.Described main part comprises main body the first side and main body on the other side the second side.Described multirow prism is arranged side by side on described main part along described main body the first side to main body the second side, and low near prism density of unit area on main part of described main body the second side at the density ratio of unit area on main part near the prism of described main body the first side.
A kind of liquid crystal indicator comprises a display panels that stacks gradually placement, a light control device, and a backlight module, and described light control device comprises described prismatic lens.The light that described backlight module sends is injected display panels after modulating through prismatic lens, described display panels comprises relative panel the first side and panel the second side, and the transmittance of corresponding described panel the first side of described display panels is higher than the transmittance of described panel the second side of correspondence.Main body first side of described prismatic lens and described panel the first corresponding setting of side, main body second side of described prismatic lens and described panel the second corresponding setting of side.
Advantage of the present invention has been to provide a kind of prismatic lens, can be compensated to specific direction light, can produce the spotlight effect of gradual change type, and the liquid crystal indicator that a kind of wide viewing angle is provided.
Description of drawings
Fig. 1 is the structural representation of liquid crystal indicator provided by the present invention.
Fig. 2 is the schematic diagram of the display panels of liquid crystal indicator in Fig. 1.
The distribution skeleton view of prism on the prismatic lens that Fig. 3 provides for embodiment of the present invention.
The distribution skeleton view of prism on the prismatic lens that Fig. 4 provides for another embodiment of the present invention.
The main element symbol description
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1 |
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10 |
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20 |
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30 |
| Panel the |
14 |
| Panel the |
15 |
| Main body the |
16 |
| Main body the |
17 |
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21 |
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22 |
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23 |
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222 |
| The main body first area | 222a |
| The main body second area | 222b |
| Prism | 224 |
Following embodiment further illustrates the present invention in connection with described accompanying drawing.
Embodiment
As shown in Figure 1, the liquid crystal indicator 1 of the specific embodiment of the invention comprises the display panels 10 that stacks gradually from top to bottom, light control device 20, and backlight module 30.Upper diffusion sheet 21 and lower diffusion sheet 23 that described light control device 20 comprises a prismatic lens 22 and is separately positioned on prismatic lens 22 both sides.Be understandable that, can also comprise other light control elements such as lens etc. in described light control device 20.Described prismatic lens 22 comprises a main part 222 and is arranged on multirow prism 224 on described main part 222.Described backlight module 30 provides an area source, thinks that described display panels 10 provides backlight.
Thereby described display panels 10 reverses liquid crystal molecule to control transmittance demonstration image by applying voltage.As shown in Figure 2, described display panels 10 comprises relative panel the first side 14 and panel the second side 15, and the transmittance of described display panels 10 is reduced gradually by described panel the first side 14 to described panel the second side 15.In the present embodiment, described panel the first side 14 is display panels 10 vertically top when showing image, vertically bottom when described panel the second side 15 be display panels 10 demonstration image.
As shown in Figure 3, described main part 222 comprises relative main body the first side 16 and main body the second side 17, described multirow prism 224 is arranged side by side on described main part 222 along described main body the first side 16 to main body the second side 17, and low near the prism 224 of described main body the second side 17 density of arranging near the prism 224 of described main body the first side 16 density ratio of arranging.In the present embodiment, the arrange density of prism 224 on main part 222 is increased gradually by main body the first side 16 to main body the second side 17, simultaneously with the panel first side 14 corresponding setting of described main body the first side 16 with display panels 10, with the panel second side 15 corresponding setting of described main body the second side 17 with display panels 10.
So, panel the first corresponding setting of side 14 that main body the first side 16 that prismatic lens 22 the above prism 224 density are lower is higher with display panels 10 transmittances, and main body the second side that prismatic lens 22 the above prism 224 density are higher panel second side 15 corresponding setting lower with display panels 10 transmittances, can compensate the gray-scale inversion phenomenon that and from different visual angles seeing of causing different by display panels 10 different parts transmittances originally brightness disproportionation occurs and cause due to brightness disproportionation, thereby reach the effect of wide viewing angle.
In another embodiment, as shown in Figure 4, main part 222 is divided into by described main body the first side 16 to described main body the second side 17 main body first area 222a and the main body second area 222b that Area Ratio is 2:1, are twices near the main body second area 222b area of main body the second side 17 near the main body first area 222a area of main body the first side 16, the upper prism 224 of the described main body second area 222b density of arranging is arrange three times of density of the upper prism 224 of described main body first area 222a.
in the present invention, described prism 224 can be but be not limited to prism, as long as satisfy near the prism 244 of described main body the first side 16 low near prism 224 density of arranging of unit area on main part 222 of described main body the second side 17 at the density ratio of arranging of unit area on main part 222, simultaneously higher panel the first side 14 of described main body the first side 16 transmittance relative to display panels 10 is aligned, the embodiment that lower panel the second side 15 of described main body the second side 17 transmittance relative to display panels 10 is aligned is all within protection scope of the present invention.
Those skilled in the art will be appreciated that; above embodiment is only that the present invention is described; and be not to be used as limitation of the invention; as long as within connotation scope of the present invention, the appropriate change that above embodiment is done and change all drop on the scope of protection of present invention within.
Claims (8)
1. prismatic lens, it is used for light is modulated, described prismatic lens comprises a main part and is arranged on multirow prism on described main part, described main part comprises main body the first side and main body on the other side the second side, described multirow prism is arranged side by side on described main part along described main body the first side to main body the second side, and low near prism density of arranging of unit area on main part of described main body the second side at the density ratio of arranging of unit area on main part near the prism of described main body the first side.
2. prismatic lens as claimed in claim 1, it is characterized in that: the arrange density of described prism on described main part is increased gradually by main body the first side to main body the second side.
3. prismatic lens as claimed in claim 1, it is characterized in that: described main part comprises by described main body the first side and is divided into main body first area and the main body second area that Area Ratio is 2:1 to described main body the second side, be twice near the main body second area area of main body the second side near the main body first area area of main body the first side, on described main body second area, the prism density of arranging is arrange three times of density of prism on described main body first area.
4. prismatic lens as claimed in claim 1, it is characterized in that: described prism is prism.
5. liquid crystal indicator, comprise the display panels that stacks gradually placement, light control device, and backlight module, described light control device comprises prismatic lens as described in any one in claim 1-4, the light that described backlight module sends is injected display panels after modulating through prismatic lens, described display panels comprises relative panel the first side and panel the second side, the transmittance of corresponding described panel the first side of described display panels is higher than the transmittance of described panel the second side of correspondence, main body first side of described prismatic lens and described panel the first corresponding setting of side, main body second side of described prismatic lens and described panel the second corresponding setting of side.
6. liquid crystal indicator as claimed in claim 5 is characterized in that: described panel the first side is display panels vertically top when showing image, and described panel the second side is display panels vertically bottom when showing image.
7. liquid crystal indicator as claimed in claim 5 is characterized in that: the transmittance of described display panels is reduced gradually by described panel the first side to described panel the second side.
8. liquid crystal indicator as claimed in claim 5, it is characterized in that: main body the first side and described panel first side of described prismatic lens align, and main body second side of described prismatic lens and described panel the second side are to aligning.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201310073877 CN103149611A (en) | 2013-01-02 | 2013-01-02 | Prismatic lens and liquid crystal display device using prismatic lens |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201310073877 CN103149611A (en) | 2013-01-02 | 2013-01-02 | Prismatic lens and liquid crystal display device using prismatic lens |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310000604.1A Division CN103018803B (en) | 2013-01-02 | 2013-01-02 | Brightness enhancement film and use the liquid crystal indicator of this brightness enhancement film |
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| Publication Number | Publication Date |
|---|---|
| CN103149611A true CN103149611A (en) | 2013-06-12 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 201310073877 Pending CN103149611A (en) | 2013-01-02 | 2013-01-02 | Prismatic lens and liquid crystal display device using prismatic lens |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106996544A (en) * | 2016-01-26 | 2017-08-01 | 瑞仪光电(苏州)有限公司 | Prismatic lens, backlight module |
| CN108490610A (en) * | 2018-03-22 | 2018-09-04 | 京东方科技集团股份有限公司 | Improve the method and back lighting device of HUD brightness homogeneities |
| CN110308591A (en) * | 2019-07-31 | 2019-10-08 | 厦门天马微电子有限公司 | Backlight module and display device |
| US10571620B2 (en) | 2016-01-08 | 2020-02-25 | Boe Technology Group Co., Ltd. | Prism film, light guide plate, backlight module and display apparatus |
-
2013
- 2013-01-02 CN CN 201310073877 patent/CN103149611A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10571620B2 (en) | 2016-01-08 | 2020-02-25 | Boe Technology Group Co., Ltd. | Prism film, light guide plate, backlight module and display apparatus |
| CN106996544A (en) * | 2016-01-26 | 2017-08-01 | 瑞仪光电(苏州)有限公司 | Prismatic lens, backlight module |
| WO2017128530A1 (en) * | 2016-01-26 | 2017-08-03 | 瑞仪光电(苏州)有限公司 | Prism sheet, backlight module, and display device |
| US10209410B2 (en) | 2016-01-26 | 2019-02-19 | Radiant Opto-Electronics (Suzhou) Co., Ltd. | Prism sheet, and a backlight module and a display apparatus including the same |
| CN108490610A (en) * | 2018-03-22 | 2018-09-04 | 京东方科技集团股份有限公司 | Improve the method and back lighting device of HUD brightness homogeneities |
| CN110308591A (en) * | 2019-07-31 | 2019-10-08 | 厦门天马微电子有限公司 | Backlight module and display device |
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Application publication date: 20130612 |