WO2018040144A1 - 显示装置及其滤光片 - Google Patents
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- WO2018040144A1 WO2018040144A1 PCT/CN2016/099415 CN2016099415W WO2018040144A1 WO 2018040144 A1 WO2018040144 A1 WO 2018040144A1 CN 2016099415 W CN2016099415 W CN 2016099415W WO 2018040144 A1 WO2018040144 A1 WO 2018040144A1
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Definitions
- the present invention relates to the field of touch screen manufacturing technologies, and in particular, to a display device and a filter thereof.
- RGBW display technology adds white W sub-pixels based on the traditional RGB color resistance arrangement. Compared with RGB color resistance of less than 1/3, the transmittance of W sub-pixel material is close to 1, thus relative to RGB pixels.
- the arrangement has the advantages of high brightness and low power consumption.
- the conventional RGBW liquid crystal display device displays a white screen
- the backlight passes through the lower polarizer, the glass layer, and the liquid crystal layer, and before entering the CF layer
- the white light has the same energy spectral distribution, and the white light synthesized after passing through the RGB sub-pixel is transmitted through different The color mixing effect of the color resist of the colorant.
- the RGBW display uses the same or similar R/G/B color resistance as the RGB display, its static R/G/B color coordinates and color gamut can be adjusted to match the traditional RGB display.
- the W sub-pixel has only one material, and the conventional OC material is usually used for the process compatibility angle, and it is difficult to accurately adjust the white light color coordinates, so that the white light and the white light synthesized by the RGB sub-pixel have an energy spectrum distribution and white.
- the problem of different point coordinates so it is necessary to use appropriate means to match the white light color coordinates of the RGB sub-pixel synthesis with the W white light color coordinates.
- the present invention provides a display device and a filter thereof, which can match the white light color coordinates synthesized by the R sub-pixel, the G sub-pixel and the B sub-pixel with the white light color coordinates of the W sub-pixel. .
- a specific technical solution proposed by the present invention is to provide a filter comprising a dielectric layer and an array of wire grid structures disposed on the dielectric layer, the array of wire grid structures comprising a plurality of wire grid structures, each of which
- the wire grid structure includes a first wire grid unit, a second wire gate unit, a third wire grid unit, and a fourth wire grid unit, the first wire grid unit, the second wire grid unit, the third wire grid unit, and the fourth wire grid unit.
- Each of the first wire grid unit, the second wire grid unit, the third wire grid unit, and the fourth wire grid unit have unequal pitches, and the first wire grid unit and the second wire are respectively included.
- the gate unit, the third wire grid unit, and the fourth wire grid unit are respectively used to filter incident light to obtain light of four different colors.
- the pitches of the first wire grid unit, the second wire grid unit, and the third wire grid unit are sequentially decreased.
- the shape of the cross section of the wire grid in a direction perpendicular to the dielectric layer and the wire grid is square, trapezoidal or triangular.
- the wire grid is made of aluminum, silver or gold.
- the present invention also provides a display device including a backlight module and a lower substrate, a liquid crystal layer and an upper substrate sequentially disposed on the backlight module, the upper substrate including a substrate and an upper polarizer on the substrate
- the lower substrate includes a lower polarizer, a TFT array on the lower polarizer, and the lower substrate further includes a filter as described above, the filter is disposed on the TFT array, the line
- the gate structure array is located between the dielectric layer and the liquid crystal layer, and the first wire grid unit, the second wire grid unit, the third wire grid unit, and the fourth wire grid unit are respectively used for filtering incident light.
- the R sub-pixels are red
- the G sub-pixels are green
- the B sub-pixels are blue
- the W sub-pixels are white.
- the pitches of the first wire grid unit, the second wire grid unit, and the third wire grid unit are sequentially decreased.
- the first wire grid unit is configured to filter the incident light to obtain an R sub-pixel
- the second wire grid unit is configured to filter the incident light to obtain a G sub-pixel
- the third wire grid is The unit is configured to filter the incident light to obtain a B sub-pixel
- the fourth wire grid unit is configured to filter the incident light to obtain a W sub-pixel.
- the length of the wire grid in each wire grid unit is equal.
- the spacing between any two adjacent first wire grid cells, second wire gate cells, third wire grid cells, and fourth wire grid cells is equal.
- the display device further includes an OC planarization layer, the OC planarization layer being located between the substrate and the liquid crystal layer.
- the present invention provides a display device and a filter thereof, the filter including a first wire grid unit, a second wire grid unit, a third wire grid unit, and a fourth wire grid unit, by adjusting the first wire grid unit and the second wire
- the white color coordinates of the W sub-pixels match.
- FIG. 1 is a schematic structural view of a polarizer of the display device of Embodiment 1;
- FIG. 2 is a schematic structural view of a wire grid layer of the polarizer of FIG. 1;
- FIG. 3 is a schematic structural view of a display device of Embodiment 1;
- 5 is a flowchart of a method for matching white light color coordinates of R sub-pixels, G sub-pixels, and B sub-pixels combined with white light color coordinates of W sub-pixels;
- FIG. 6 is a schematic structural view of a display device of Embodiment 2.
- the present embodiment provides a filter 1 including a dielectric layer 11 and a wire grid layer 12 disposed on the dielectric layer 11.
- the wire grid layer 12 is provided with an array of wired gate structures.
- the structure array includes a plurality of wire grid structures 12a, and FIG.
- the wire grid layer 12 includes one wire grid structure 12a, each wire grid structure 12a including a first wire grid unit 120, a second wire grid unit 121, and a third line
- the gate unit 122 and the fourth line gate unit 123, the first wire grid unit 120, the second wire grid unit 121, the third wire grid unit 122, and the fourth wire grid unit 123 respectively include a plurality of spaced-apart grids 100, wherein The pitches of the one-line gate unit 120, the second wire grid unit 121, the third wire grid unit 122, and the fourth wire grid unit 123 are not the same Or the same, since the pitches of the first wire grid unit 120, the second wire grid unit 121, the third wire grid unit 122, and the fourth wire grid unit 123 are not equal, the incident light passes through the first wire grid unit 120, the second wire grid unit 121, The third wire grid unit 122 and the fourth wire grid unit 123 are filtered to obtain four different colors of light.
- the dielectric layer 11 is a refractive index modulated multilayer dielectric structure.
- the dielectric layer 11 includes a first refractive index modulation layer 110, a second refractive index modulation layer 111 disposed on the first refractive index modulation layer 110, and a first The third refractive index modulation layer 112 between the second refractive index modulation layer 111 and the wire grid layer 12.
- the refractive index of the first refractive index modulation layer 110 and the third refractive index modulation layer 112 is lower than that of the second refractive index modulation layer 111, and the material of the first refractive index modulation layer 110 and the third refractive index modulation layer 112 may be SiO2. SiO, MgO, etc., the material of the second refractive index modulation layer 111 may be Si3N4, TiO2, Ta2O5 or the like.
- the wire grid layer 12 includes a wire grid structure array and a black matrix unit 12b, and the black matrix unit 12b is located between the first wire gate unit 120, the second wire gate unit 121, the third wire gate unit 122, and the fourth wire grid unit 123, and the black matrix
- the unit 12b is opaque, and serves to prevent light leakage from the sides of the first wire grid unit 120, the second wire grid unit 121, the third wire grid unit 122, and the fourth wire grid unit 123.
- the width and pitch of the wire grid 100 in each wire grid unit are equal, and the pitches of the different wire grid cells are not equal.
- the material of the wire grid layer 12 is a material having a large refractive index imaginary part, such as aluminum, silver or gold.
- the wire grid layer 12 is made of aluminum.
- the wire grid period in the first wire grid unit 120, the second wire grid unit 121, the third wire grid unit 122, and the fourth wire grid unit 123 is 200 nm to 500 nm, where the wire gate period refers to two adjacent lines.
- the distance between the geometric centers of the gates 100, the width of the wire grid 100 is 0.4 to 0.9 times the period of the wire grid, and the height of the wire grid 100 is 20 nm to 200 nm.
- the wire grid 100 is strip-shaped, and its shape in a cross section perpendicular to the dielectric layer 11 and the wire grid 100 is square, trapezoidal or triangular, and the lengths of the wire grids 100 in different wire grid cells are equal.
- the present embodiment further provides a display device including a backlight module 2 , a lower substrate sequentially disposed on the backlight module 2 , a liquid crystal layer 3 , and an upper substrate.
- the upper substrate includes a substrate 4 and is located on the substrate 4 .
- the upper polarizer 5, the lower substrate includes a lower polarizer 6, the above-mentioned filter 1 and a TFT array 7, and the TFT array 7 is located on the lower polarizer 6, and the filter 1 is located between the TFT array 7 and the liquid crystal layer 3.
- Wire grid layer 12 Located between the dielectric layer 11 and the liquid crystal layer 3.
- the polarization direction of the upper polarizer 5 is perpendicular to the polarization direction of the lower polarizer 6.
- the backlight module 2 is a side-entry backlight module structure or a direct-lit backlight module structure.
- light emitted from the backlight module 2 is incident on the wire grid layer 12
- light incident on the black matrix unit 12b and the wire grid 100 is absorbed, and the remaining incident light is from two adjacent wire grids in each of the wire grid cells.
- the 100 passes through and is filtered by the first wire grid unit 120, the second wire grid unit 121, the third wire grid unit 122, and the fourth wire grid unit 123 to obtain a red sub-pixel with a color of red, and the color is The green G sub-pixel, the blue B sub-pixel, and the white W sub-pixel, for example, the first wire grid unit 120 filters the incident light to obtain an R sub-pixel, and the second wire grid unit 121 opposes the incident.
- the G sub-pixel is obtained, and the third wire grid unit 122 filters the incident light to obtain a B sub-pixel, and the fourth wire grid unit 123 filters the incident light to obtain a W sub-pixel, so that the incident light passes through each
- the four wire grid structures 12a can obtain four sub-pixels of R, G, B, and W, and the four sub-pixels form one pixel of the display device.
- the material of the wire grid layer 12 in the display device of the present embodiment is aluminum
- the wire grid period in the first wire grid unit 120 is 400 nm to 500 nm
- the wire grid period in the second wire grid unit 121 is 300 nm to 450 nm
- the wire grid period in the third wire grid unit 122 is 200 nm to 350 nm
- the wire grid period in the fourth wire grid unit 123 is 200 nm to 500 nm.
- the transmittance of the first wire grid unit 120 at the center peak corresponding to the red light band, the transmittance of the second wire grid unit 121 at the center peak corresponding to the green light band, and the third wire grid unit 122 can be made by such an arrangement.
- the transmittance at the center peak corresponding to the blue light band is greater than 70%, and the lowest transmittance outside the band is less than 10%; the transmittance of the fourth wire grid unit 123 in the full band is greater than 70%.
- the black matrix unit 12b located between any two adjacent first wire grid cells 120, second wire gate cells 121, third wire gate cells 122, and fourth wire gate cells 123 has the same width.
- the display device of the present embodiment further includes an OC planarization layer 8 between the wire grid layer 12 and the liquid crystal layer 3, and an OC planarization layer 8 covering the upper surface of the wire grid layer 12 for adding The smoothness of the upper surface of the wire grid layer 12 and the anti-pollution effect on the liquid crystal layer 3.
- the arrangement of the first wire grid unit 120, the second wire grid unit 121, the third wire grid unit 122, and the fourth wire grid unit 123 in each of the wire grid structures 12a can be set according to actual display requirements, FIG. This is given by way of example only and is not intended to be limiting.
- the case where the material of the wire grid layer 12 is aluminum and the height of the wire grid layer 12 is fixed is taken as an example to specifically describe the R sub-pixel, the G sub-pixel, and the width of the wire grid 100 by changing the pitch of each wire grid unit.
- B subimage The process of matching the white light color coordinates of the primed color with the white light color coordinates of the W sub-pixel.
- the entire matching process includes the following steps:
- Step S1 selecting a first parameter range such that the transmittance of the first wire grid unit 120 at the center peak corresponding to the red light band is greater than 70%, and the minimum transmittance outside the band is less than 10%
- the second wire grid unit 121 is a second parameter range in which the transmittance at the center peak corresponding to the green light band is greater than 70% and the lowest transmittance outside the band is less than 10%
- the third wire grid unit 122 is at the center peak corresponding to the blue light band.
- the transmittance of the fourth line gate unit 123 in the full-wavelength corresponding to the visible light is greater than the fourth parameter range of 70%.
- the parameters herein include the wire grid period and duty cycle of the wire grid cell, wherein the duty cycle represents the ratio of the width of the wire grid 100 to the wire grid period.
- Step S2 selecting different parameters in the first, second, and third parameter ranges, and calculating color coordinates of the white light color coordinates synthesized by the R sub-pixel, the G sub-pixel, and the B sub-pixel under the selected parameters in different gray levels
- the curve is changed to obtain a first color coordinate change curve set of the R sub-pixel, the G sub-pixel, and the B sub-pixel under the first, second, and third parameter ranges.
- Step S3 selecting different parameters in the fourth parameter range, and calculating a color coordinate curve of the white light under different gray levels of the W sub-pixel under the selected parameter, thereby obtaining a second sub-pixel in the fourth parameter range. Color coordinate curve set.
- Step S4 selecting, as the first wire grid unit 120, the second wire grid unit 121, and the third wire grid, parameters corresponding to the two color coordinate curve with the smallest deviation among the first color coordinate change curve set and the second color coordinate change curve set.
- the wire grid parameters of the unit 122 and the fourth wire grid unit 123 are such that the white light color coordinates of the R sub-pixel, the G sub-pixel, and the B sub-pixel synthesis are matched with the white light color coordinates of the W sub-pixel.
- the white light color coordinates synthesized by the sub-pixel, the G sub-pixel, and the B sub-pixel are matched with the white light color coordinates of the W sub-pixel, thereby improving the white point drift phenomenon of the display device.
- the difference between this embodiment and the embodiment 1 is that the filter 1 is located under the TFT array 7 and below. Between the polarizers 6, the wire grid layer 12 is located between the dielectric layer 11 and the TFT array 7.
- the display device of the present embodiment can omit the OC in the display device of the first embodiment by arranging the filter 1 between the TFT array 7 and the lower polarizer 6.
- the planarization layer 8 isolates the filter 1 from the liquid crystal layer 3 through the TFT array, thereby preventing the wire grid layer 12 from contaminating the liquid crystal layer 3.
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Abstract
Description
Claims (14)
- 一种滤光片,其包括介质层以及设置于所述介质层上的线栅结构阵列,其中,所述线栅结构阵列包括多个线栅结构,每个所述线栅结构包括第一线栅单元、第二线栅单元、第三线栅单元以及第四线栅单元,所述第一线栅单元、第二线栅单元、第三线栅单元以及第四线栅单元分别包括多个间隔设置的线栅,所述第一线栅单元、第二线栅单元、第三线栅单元以及第四线栅单元的栅距均不相等,所述第一线栅单元、第二线栅单元、第三线栅单元以及第四线栅单元分别用于对入射光进行滤光而得到四种不同的颜色的光。
- 根据权利要求1所述的滤光片,其中,所述第一线栅单元、第二线栅单元、第三线栅单元的栅距依次减小。
- 根据权利要求2所述的滤光片,其中,所述线栅沿与所述介质层及所述线栅垂直的方向上的截面的形状为方形、梯形或三角形。
- 根据权利要求1所述的滤光片,其中,所述线栅的材质为铝、银或金。
- 一种显示装置,包括背光模组以及依次设置于所述背光模组上的下基板、液晶层以及上基板,所述上基板包括基底以及位于所述基底上的上偏光片,所述下基板包括下偏光片、位于所述下偏光片上的TFT阵列,其中,所述下基板还包括如权利要求1所述的滤光片,所述滤光片设置于所述TFT阵列上,所述线栅结构阵列位于所述介质层与所述液晶层之间,所述第一线栅单元、第二线栅单元、第三线栅单元以及第四线栅单元分别用于对入射光进行滤光而得到颜色为红色的R子像素、颜色为绿色的G子像素、颜色为蓝色的B子像素以及颜色为白色的W子像素。
- 根据权利要求5所述的显示装置,其中,所述第一线栅单元、第二线栅单元、第三线栅单元的栅距依次减小。
- 根据权利要求6所述的显示装置,其中,所述第一线栅单元用于对入射光进行滤光后得到R子像素,所述第二线栅单元用于对入射光进行滤光后得到G子像素,所述第三线栅单元用于对入射光进行滤光后得到B子像素,所述第四线栅单元用于对入射光进行滤光后得到W子像素。
- 根据权利要求5所述的显示装置,其中,每个线栅单元中的线栅长度相等。
- 根据权利要求5所述的显示装置,其中,任意两个相邻的所述第一线栅单元、第二线栅单元、第三线栅单元以及第四线栅单元之间的间距相等。
- 根据权利要求5所述的显示装置,其中,所述显示装置还包括OC平坦化层,所述OC平坦化层位于所述基底与所述液晶层之间。
- 根据权利要求6所述的显示装置,其中,所述显示装置还包括OC平坦化层,所述OC平坦化层位于所述基底与所述液晶层之间。
- 根据权利要求7所述的显示装置,其中,所述显示装置还包括OC平坦化层,所述OC平坦化层位于所述基底与所述液晶层之间。
- 根据权利要求8所述的显示装置,其中,所述显示装置还包括OC平坦化层,所述OC平坦化层位于所述基底与所述液晶层之间。
- 根据权利要求9所述的显示装置,其中,所述显示装置还包括OC平坦化层,所述OC平坦化层位于所述基底与所述液晶层之间。
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EP16914708.9A EP3505981B1 (en) | 2016-08-29 | 2016-09-20 | Display device and filter thereof |
US15/301,340 US10146082B2 (en) | 2016-08-29 | 2016-09-20 | Display devices and the color filters thereof |
KR1020197007839A KR102235896B1 (ko) | 2016-08-29 | 2016-09-20 | 디스플레이 스크린 및 이의 광 필터 |
JP2019508964A JP2019526831A (ja) | 2016-08-29 | 2016-09-20 | 表示装置およびそのフィルタ |
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CN201610761251.0A CN106125179B (zh) | 2016-08-29 | 2016-08-29 | 显示装置及其滤光片 |
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EP (1) | EP3505981B1 (zh) |
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CN109582162B (zh) * | 2017-09-28 | 2024-06-04 | 京东方科技集团股份有限公司 | 触控显示模组及其制作方法、触控显示装置 |
CN107664881B (zh) * | 2017-10-31 | 2020-07-24 | 武汉华星光电技术有限公司 | 液晶显示器及其显示模组 |
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US11249232B2 (en) * | 2018-08-14 | 2022-02-15 | Innolux Corporation | Electronic device |
CN110308582B (zh) * | 2019-06-29 | 2022-03-22 | 上海中航光电子有限公司 | 显示装置序列及其制作方法 |
CN114371572A (zh) * | 2020-10-14 | 2022-04-19 | 京东方科技集团股份有限公司 | 显示面板及其制备方法、显示装置 |
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CN106125179B (zh) | 2019-02-26 |
US10146082B2 (en) | 2018-12-04 |
KR102235896B1 (ko) | 2021-04-02 |
CN106125179A (zh) | 2016-11-16 |
EP3505981A4 (en) | 2020-03-18 |
JP2019526831A (ja) | 2019-09-19 |
US20180196304A1 (en) | 2018-07-12 |
EP3505981A1 (en) | 2019-07-03 |
EP3505981B1 (en) | 2022-08-24 |
KR20190037337A (ko) | 2019-04-05 |
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