WO2015192384A1 - Black matrix unequal-width color filter substrate and liquid crystal display - Google Patents

Black matrix unequal-width color filter substrate and liquid crystal display Download PDF

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Publication number
WO2015192384A1
WO2015192384A1 PCT/CN2014/080541 CN2014080541W WO2015192384A1 WO 2015192384 A1 WO2015192384 A1 WO 2015192384A1 CN 2014080541 W CN2014080541 W CN 2014080541W WO 2015192384 A1 WO2015192384 A1 WO 2015192384A1
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Prior art keywords
pixel
sub
color filter
black matrix
filter substrate
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PCT/CN2014/080541
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French (fr)
Chinese (zh)
Inventor
吴川
郭晋波
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深圳市华星光电技术有限公司
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Priority to US14/370,775 priority Critical patent/US20150370121A1/en
Publication of WO2015192384A1 publication Critical patent/WO2015192384A1/en

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    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors

Definitions

  • the present invention relates to a color filter substrate, and more particularly to a curved surface black matrix unequal width color filter substrate and liquid crystal display.
  • a black matrix 11 is usually formed on the side of a color filter substrate (CF, Color Filter) 10 (BM).
  • Black matrix avoids color mixing and light leakage, and for curved liquid crystal display (LCD), the curvature of the panel causes the CF substrate 10 and the TFT substrate (Thin Film Transistor) 20 to be relatively misaligned, that is, the position is relatively shifted (shift) Moreover, the shift direction is not the left/right shift of the entire CF substrate 10 with respect to the TFT substrate 20, but the CF substrate 10 is slid to the left and right sides with respect to the TFT substrate 20 on the left and right sides, respectively, and therefore, when the radius of curvature is relatively In the hour, the curvature of the panel is large, and the relative shift amount of the left and right sides of the two substrates is relatively large, so that the actual aperture ratio of the pixel at the left and right positions of the panel is smaller than that of the central region.
  • the RGB pixel unit includes Three side-by-side red sub-pixels ⁇ green sub-pixel G and blue sub-pixel B with black matrix (BM) 11 distributed between them
  • BM black matrix
  • the actual opening area is the area where the shift amount c is subtracted.
  • c indicates the amount of shift at that point, which is not a value, nor does it mean that c in the figure is equal, so the pixel brightness in the left and right areas is centered.
  • the area is small, and the macroscopic representation is a dark group, as shown in Figure 2. If the radius of curvature is further reduced, the amount of shift on both sides is further increased, and color shift may occur.
  • the present invention provides a solution to the problem of dark clusters or color shifts produced by a curved liquid crystal display due to offset of a CF substrate relative to a TFT substrate in order to solve the above disadvantages.
  • one of the objects of the present invention is to provide a color filter of unequal width of a black matrix.
  • the color filter substrate is a curved surface, wherein the color filter substrate is provided with a black matrix, wherein a portion not covered by the black matrix forms a sub-pixel display area, wherein the color filter substrate is from a vertical direction
  • the width of the black matrix on both sides of the central axis gradually increases, and accordingly, the width of the display region of the sub-pixel gradually decreases.
  • the color filter substrate is divided into several regions according to a fixed width from both sides of the longitudinal center axial direction, and the black matrix width of the central region to which the central axis belongs or the region closest to the central axis remains unchanged, and
  • the black matrix width increment of the area where the central axis belongs to the central region or the closest region of the central axis is a, and the black matrix width of the region sequentially arranged to the both sides is respectively larger than the black matrix of the adjacent inner region.
  • the width increment is a.
  • the sub-pixel includes a red sub-pixel, a green sub-pixel, and a blue sub-pixel.
  • the sub-pixel includes a red sub-pixel, a green sub-pixel, a blue sub-pixel, and a white sub-image.
  • Another object of the present invention is to provide a liquid crystal display comprising a curved color filter substrate, wherein a color matrix is provided with a black matrix, wherein a portion not covered by the black matrix forms a sub-pixel display region, wherein The width of the black matrix on both sides of the longitudinal center axial direction of the color filter substrate is gradually increased, and accordingly, the width of the display region of the sub-pixel is gradually decreased.
  • the color filter substrate is divided into several regions according to a fixed width from both sides of the longitudinal center axial direction, and the black matrix width of the central region to which the central axis belongs or the region closest to the central axis remains unchanged, and
  • the black matrix width increment of the area where the central axis belongs to the central region or the closest region of the central axis is a, and the black matrix width of the region sequentially arranged to the both sides is respectively larger than the black matrix of the adjacent inner region.
  • the width increment is a.
  • a backlight panel wherein the backlight panel is disposed on a back surface of the liquid crystal cell, and performs light compensation according to the corresponding area.
  • the sub-pixel includes a red sub-pixel, a green sub-pixel, and a blue sub-pixel.
  • the sub-pixel includes a red sub-pixel, a green sub-pixel, a blue sub-pixel, and a white sub-image.
  • FIG. 1 is a schematic view of shift between a curved CF substrate and a TFT substrate.
  • 2 is a schematic view showing a dark group occurring between a curved CF substrate and a TFT substrate.
  • FIG. 3 is a schematic view showing a color shift between a curved CF substrate and a TFT substrate.
  • 4 is a schematic view showing the width adjustment of the BM of the CF substrate in the first embodiment.
  • Fig. 5 is a schematic view showing an increase in the width of BM of different regions of the CF substrate in the first embodiment.
  • 6 is a schematic view of a liquid crystal display of Embodiment 1.
  • Fig. 7 is a schematic view showing the BM width of the CF substrate sections in the second embodiment.
  • Fig. 8 is a schematic view showing an increase in the width of BM of different regions of the CF substrate in the second embodiment.
  • the liquid crystal display includes a TFT substrate 20 (Thin Film Transistor) and a CF substrate 10 (Color Filter substrate, Color Filter) which are connected in parallel, wherein CF A black matrix 11 is disposed on the substrate 10, and a sub-pixel display area is formed at a place not covered by the black matrix 11.
  • TFT substrate 20 Thin Film Transistor
  • CF substrate 10 Color Filter substrate, Color Filter
  • CF A black matrix 11 is disposed on the substrate 10
  • a sub-pixel display area is formed at a place not covered by the black matrix 11.
  • the resulting parallax can make the image you see clearer, more natural, and more realistic.
  • the size of the pixel is fixed, that is, the area of the sub-pixel and the black matrix 11 (BM) wrapped around the periphery is relatively unchanged, as shown in the figure, in RGB pixels.
  • the sub-pixel includes a side-by-side red sub-pixel R, a green sub-pixel G, and a blue sub-pixel B.
  • the solution provided by the embodiment is to increase the width of the black matrix 11 for increasing the width of the black matrix 11 when the shift occurs, and still opening the sub-pixel to the opening of the bottom TFT substrate. Partial occlusion prevents the color mixing caused by the display of two different colors in the same TFT opening area. It can be understood that when the CF substrate 10 is bent, the amount of shift occurring from the longitudinal central axis 12 to both sides is gradually increased, and the area of a single pixel unit (including the sub-pixel and the black matrix) is constant. The width of the lower black matrix is gradually increased, and accordingly, the width of the display area of the sub-pixel is gradually decreased.
  • the CF substrate 10 is divided into a plurality of regions from the longitudinal central axis 12 to the two sides by a fixed width.
  • the width of the black matrix of the central region hi to which the central axis belongs remains unchanged, and the width of the black matrix of the two regions h2 connected to the central region increases.
  • the amount of a, the black matrix widths of the regions h3...hn (n is a natural number greater than 1) arranged in order to the both sides are respectively greater than the width of the black matrix of the adjacent inner region, and the width is a, that is, when the region hn When the increment is b.
  • the black matrix 11 is widened and the pixel pitch is constant, the sub-pixel display area is reduced, and the aperture ratio is lowered.
  • the direct effect is that the luminance is lowered. For this reason, it can be provided through the back surface of the liquid crystal cell.
  • the backlight 30 performs light compensation, and the amount of light compensation can be adjusted by the change in aperture ratio.
  • the aperture ratio of the normal hi region of the panel center is 85.7% (rough calculation)
  • the actual aperture ratio should consider the com line at the center of the pixel, the area of shield metal, etc., so the actual aperture ratio will be lower.
  • the aperture ratio of % and 2.7% is equalized by the backlight area corresponding to the h2 and hn areas by the backlight.) This can solve the color shift problem and the dark group problem of the curved LCD under the premise of ensuring uniform brightness of the module. .
  • Embodiment 2 As shown in FIG. 7 and FIG.
  • this embodiment takes an RGBW pixel as an example, and the sub-pixel includes a red sub-pixel R, a green sub-pixel G, a blue sub-pixel B, and a white sub-pixel W which are arranged side by side.
  • the degree of the radius of the curved surface if the radius of curvature is relatively large, the amount of shift from the relatively large area of the central axis 12 of the color filter substrate is relatively small, and can be fixed from the longitudinal central axis 12 to both sides.
  • the width is divided into several regions, and the width of the black matrix of the region t1 on the two sides closest to the central axis 12 remains unchanged, and the width of the black matrix to the two-edge region t2 connected to the central regions of the two regions is correspondingly increased, and the fact On the upper side, the shift increments a' and b' of the adjacent areas on both sides are not linearly increased due to the influence of materials, processes and surrounding environment, but the basic law is foreseeable, and the experimental data is obtained.
  • the LCD screen has a width of 1.2 meters. When the radius of curvature is 5m, the maximum Shift of the 0.7mm thick glass is 21.25 ⁇ m, and the maximum Shift of the 0.5mm thick glass is 14.96 ⁇ m.

Abstract

Provided are a black matrix unequal-width color filter substrate and a liquid crystal display containing the color filter; the color filter substrate (10) is a curved surface; a black matrix (11) is disposed on the color filter substrate (10), and the area not covered by the black matrix forms a subpixel display region; the width of the color filter substrate (10) gradually increases from the longitudinal central axis toward the black matrix at both sides. The invention effectively resolves the phenomenon of a relative offset occurring between the front and rear color filter substrate (10) and TFT substrate (20) caused by the display screen being curved, and effectively solves the problem of the aperture ratio becoming relatively small and the brightness being inadequate as a result of widening the black matrix; the problem of consistency in the display performance of the display screen is solved by means of backlight compensation.

Description

黑矩阵不等宽的彩色滤光片基板及液晶显示器  Black matrix unequal width color filter substrate and liquid crystal display
¾术领域 本发明涉及一种彩色滤光片基板， 特别指一种曲面的黑矩阵不等宽的彩色 滤光片基板及液晶显示器。 背景技术 在薄膜场效应晶体管液晶显示器 （ TFT-LCD， Thin Film Transistor Liquid Crystal Display)领域， 参见图 1， 于彩色滤光片基板 （CF， Color Filter) 10侧通 常做一层黑矩阵 11 (BM， Black matrix)避免混色和漏光， 而对于曲面液晶显示 器 （LCD) , 面板的弯曲弧度导致 CF基板 10、 TFT基板 （Thin Film Transistor, 薄膜晶体管基板） 20相对错位， 即位置相对发生偏移 （shift) , 而且， shift方向 并不是整个 CF基板 10相对于 TFT基板 20统一向左 /右 shift, 而是 CF基板 10 在左右两边相对于 TFT基板 20分别向左右两侧滑动，因此，当曲率半径较小时， 面板的弯曲程度较大， 两块基板的左右两侧相对 shift量较大， 以致面板左右位 置像素（pixel ) 的实际开口率较中心区域偏小， 以 RGB像素为例， RGB像素单 元包括三个并排的红色子像素^ 绿色子像素 G和蓝色子像素 B , 它们之间分布 有黑矩阵 （BM) 11， 在弯曲发生 shift后， 实际开口区域为减去 shift量 c的区 域， 图中 c表示该处 shift量， 并不是一个数值， 也不代表图中的 c是相等的， 因此左右两侧区域 pixel亮度较中心区域偏小， 宏观表现为暗团， 见图 2 ; 若进 一步减小曲率半径， 两侧的 shift量进一步加大， 就还可能会出现色偏现象， 参 见图 3， 显示绿色画面时， 中间区域由于 shift量没有或很小， 只有绿色像素亮， 而左侧区域则是绿色和蓝色的部分区域 e亮 （亮的区域用黑线框表示）， 右侧区 域则是绿色和红色的部分区域 f亮 （亮的区域用黑线框表示）， 因此左右两边漏 光颜色不同， 且此种色偏在纯色画面时尤其明显。 发明内容 本发明为解决以上不足而提供一种可以解决曲面液晶显示器由于 CF基板 相对 TFT基板偏移而生产的暗团或色偏的问题。 为解决以上问题， 本发明的目的之一是提供一种黑矩阵不等宽的彩色滤光 片基板， 其中， 彩色滤光片基板为曲面， 其中彩色滤光片基板上设有黑矩阵， 其中未被黑矩阵覆盖的地方形成子像素显示区域， 其中， 所述彩色滤光片基板 自纵向中心轴向两侧的黑矩阵的宽度逐渐增大， 相应地， 子像素的显示区域的 宽度逐渐减小。 其中， 所述彩色滤光片基板自纵向中心轴向两侧分别按固定宽度分为若干 区域， 所述中心轴所属的中心区域或与中心轴最接近的区域的黑矩阵宽度保持 不变， 与中心轴所属的中心区域或中心轴最接近的区域相连接的区域的黑矩阵 宽度增量为 a，依次向两侧边排列的区域的黑矩阵宽度分别比其相邻的内侧的区 域的黑矩阵宽度增量为 a。 其中， 所述子像素包括红色子像素、 绿色子像素和蓝色子像素。 其中， 所述子像素包括红色子像素、 绿色子像素、 蓝色子像素和白色子像 FIELD OF THE INVENTION The present invention relates to a color filter substrate, and more particularly to a curved surface black matrix unequal width color filter substrate and liquid crystal display. BACKGROUND OF THE INVENTION In the field of thin film transistor liquid crystal display (TFT-LCD), referring to FIG. 1, a black matrix 11 (BM) is usually formed on the side of a color filter substrate (CF, Color Filter) 10 (BM). , Black matrix) avoids color mixing and light leakage, and for curved liquid crystal display (LCD), the curvature of the panel causes the CF substrate 10 and the TFT substrate (Thin Film Transistor) 20 to be relatively misaligned, that is, the position is relatively shifted (shift) Moreover, the shift direction is not the left/right shift of the entire CF substrate 10 with respect to the TFT substrate 20, but the CF substrate 10 is slid to the left and right sides with respect to the TFT substrate 20 on the left and right sides, respectively, and therefore, when the radius of curvature is relatively In the hour, the curvature of the panel is large, and the relative shift amount of the left and right sides of the two substrates is relatively large, so that the actual aperture ratio of the pixel at the left and right positions of the panel is smaller than that of the central region. Taking RGB pixels as an example, the RGB pixel unit includes Three side-by-side red sub-pixels ^ green sub-pixel G and blue sub-pixel B with black matrix (BM) 11 distributed between them After shifting, the actual opening area is the area where the shift amount c is subtracted. In the figure, c indicates the amount of shift at that point, which is not a value, nor does it mean that c in the figure is equal, so the pixel brightness in the left and right areas is centered. The area is small, and the macroscopic representation is a dark group, as shown in Figure 2. If the radius of curvature is further reduced, the amount of shift on both sides is further increased, and color shift may occur. See Figure 3, when the green screen is displayed, the middle area Since the shift amount is not small or small, only the green pixel is bright, while the left area is green and the blue part area is bright (the bright area is indicated by the black line frame), and the right area is the green and red part area. f is bright (the bright area is indicated by a black line frame), so the left and right sides have different light leakage colors, and this color deviation is especially noticeable in the solid color picture. SUMMARY OF THE INVENTION The present invention provides a solution to the problem of dark clusters or color shifts produced by a curved liquid crystal display due to offset of a CF substrate relative to a TFT substrate in order to solve the above disadvantages. In order to solve the above problems, one of the objects of the present invention is to provide a color filter of unequal width of a black matrix. The color filter substrate is a curved surface, wherein the color filter substrate is provided with a black matrix, wherein a portion not covered by the black matrix forms a sub-pixel display area, wherein the color filter substrate is from a vertical direction The width of the black matrix on both sides of the central axis gradually increases, and accordingly, the width of the display region of the sub-pixel gradually decreases. Wherein, the color filter substrate is divided into several regions according to a fixed width from both sides of the longitudinal center axial direction, and the black matrix width of the central region to which the central axis belongs or the region closest to the central axis remains unchanged, and The black matrix width increment of the area where the central axis belongs to the central region or the closest region of the central axis is a, and the black matrix width of the region sequentially arranged to the both sides is respectively larger than the black matrix of the adjacent inner region. The width increment is a. The sub-pixel includes a red sub-pixel, a green sub-pixel, and a blue sub-pixel. The sub-pixel includes a red sub-pixel, a green sub-pixel, a blue sub-pixel, and a white sub-image.
本发明的另一个目的是提供一种液晶显示器， 包括曲面彩色滤光片基板， 其中彩色滤光片基板上设有黑矩阵， 其中未被黑矩阵覆盖的地方形成子像素显 示区域， 其中， 所述彩色滤光片基板自纵向中心轴向两侧的黑矩阵的宽度逐渐 增大， 相应地， 子像素的显示区域的宽度逐渐减小。 其中， 所述彩色滤光片基板自纵向中心轴向两侧分别按固定宽度分为若干 区域， 所述中心轴所属的中心区域或与中心轴最接近的区域的黑矩阵宽度保持 不变， 与中心轴所属的中心区域或中心轴最接近的区域相连接的区域的黑矩阵 宽度增量为 a，依次向两侧边排列的区域的黑矩阵宽度分别比其相邻的内侧的区 域的黑矩阵宽度增量为 a。 其中， 还包括背光板， 所述背光板设于液晶盒的背面， 根据对应的区域进 行光补偿。 其中， 所述子像素包括红色子像素、 绿色子像素和蓝色子像素。 其中， 所述子像素包括红色子像素、 绿色子像素、 蓝色子像素和白色子像 Another object of the present invention is to provide a liquid crystal display comprising a curved color filter substrate, wherein a color matrix is provided with a black matrix, wherein a portion not covered by the black matrix forms a sub-pixel display region, wherein The width of the black matrix on both sides of the longitudinal center axial direction of the color filter substrate is gradually increased, and accordingly, the width of the display region of the sub-pixel is gradually decreased. Wherein, the color filter substrate is divided into several regions according to a fixed width from both sides of the longitudinal center axial direction, and the black matrix width of the central region to which the central axis belongs or the region closest to the central axis remains unchanged, and The black matrix width increment of the area where the central axis belongs to the central region or the closest region of the central axis is a, and the black matrix width of the region sequentially arranged to the both sides is respectively larger than the black matrix of the adjacent inner region. The width increment is a. There is further included a backlight panel, wherein the backlight panel is disposed on a back surface of the liquid crystal cell, and performs light compensation according to the corresponding area. The sub-pixel includes a red sub-pixel, a green sub-pixel, and a blue sub-pixel. The sub-pixel includes a red sub-pixel, a green sub-pixel, a blue sub-pixel, and a white sub-image.
本发明可以有效地解决因为显示屏由于弯曲而产生前后的 CF基板和 TFT基 板间相对偏移的现象， 并且有效地解决了在加宽黑矩阵宽度后导致开口率相对 变小而亮度不足的问题， 通过背光板的补偿来解决显示屏显示效果一致的问题。 低成本解决了大尺寸显示器曲面制作中生产的显示效果不佳的问题。 附图说明 图 1是曲面 CF基板和 TFT基板间的 shift示意图。 图 2是曲面 CF基板和 TFT基板间发生暗团示意图。 图 3是曲面 CF基板和 TFT基板间发生色偏示意图。 图 4是实施例 1中 CF基板分区分别调节 BM宽度示意图。 图 5是实施例 1中 CF基板的不同区域 BM宽度增大示意图。 图 6是实施例 1一种液晶显示器示意图。 图 7是实施例 2中 CF基板分区分别调节 BM宽度示意图。 图 8是实施例 2中 CF基板的不同区域 BM宽度增大示意图。 具体实施方式 下面将结合附图用实施例对本发明进一步说明。 实施例 1 如图 4、图 5、图 6所示，液晶显示器包括平行连接的 TFT基板 20(Thin Film Transistor, 薄膜晶体管基板） 和 CF基板 10 (彩色滤光片基板， Color Filter) , 其中 CF基板 10上设有黑矩阵 11，未被黑矩阵 11覆盖的地方形成子像素显示区 域， 制作超大尺寸显示器时， 如果使用曲面， 即内凹弧面的显示器， 可以消除 因人到像距离不同而产生的视差， 可以让看到的图像更清晰、 自然、 逼真。 但 是， 在现有的液晶显示器制程中， 像素的大小是固定不变的， 即子像素和包覆 于周边的黑矩阵 11 (BM) 的面积是相对不变的， 如图中， 以 RGB像素为例， 子像素包括并排的红色子像素 R、 绿色子像素 G和蓝色子像素 B。 当 CF基板 10和 TFT基板 20同时弯曲时， 原来位于 CF基板 10两侧的子 像素和 TFT基板 20上的开口将发生错位， 即偏移 shift, 偏移的结果有两种，一 是生产暗团的情况， 另一种情况是出现色偏现象。 为解决以上问题， 本实施例 提供的解决方案是将黑矩阵 11的宽度加大， 用于当发生 shift时， 增大宽度的黑 矩阵 11依然可以对子像素对底部 TFT基板上跨区的开口部分进行遮挡，避免同 一 TFT开口区域有 2种不同的颜色显示而导致的混色的情况发生。 可以理解， 在 CF基板 10弯曲时， 自纵向中心轴 12向两侧发生的 shift的 量是逐渐加大的， 在单一像素单元 （包括子像素和黑矩阵） 的面积不变的情况 下黑矩阵的宽度逐渐增大， 相应地， 子像素的显示区域的宽度逐渐减小。 将 CF 基板 10自纵向中心轴 12向两侧分别按固定宽度分为若干区域， 如中心轴所属 的中心区域 hi的黑矩阵宽度保持不变， 中心区域相连接的两边区域 h2的黑矩 阵宽度增量为 a， 依次向两侧边排列的区域 h3…… hn (n为大于 1的自然数）的 黑矩阵宽度分别比其相邻的内侧的区域的黑矩阵宽度增量为 a，即当区域 hn时， 增量为 b。 以上可知在黑矩阵 11加宽而像素间距不变的情况下， 会导致子像素显示区 域减小， 开口率降低， 直接的影响就是亮度下降， 为此， 可以在通过设于液晶 盒的背面的背光板 30来进行光补偿，光补偿的多少可以通过开口率变化来调整。 假设面板的黑矩阵宽度为 30 rn, 子像素宽度为 180 rn, 那么一个子像素单 元的宽度为 30 μ m+180 μ m=210 rn, 那么面板中心正常 hi区域开口率为 85.7% (大致计算为 180/210，实际开口率要考虑像素中心的 com线， shield metal 等地区的遮光， 所以实际开口率会更低）， 然而在 h2和 hn区域， 假设所需加宽 的黑矩阵宽度分别为 5 μ m和 10 μ m，那么此时 h2和 hn区域的开口率简单计算 为 175/210=83.3%和 170/210=81%， h2和 hn区域相对于正常区域的 85.7%减小 的 2.4%和 2.7%的开口率，通过 h2和 hn区域对应的背光区域通过背光板增亮进 行等比例补偿）这样就可以在保证模组亮度均匀的前提下解决曲面 LCD 的色偏 问题和暗团问题。 实施例 2 如图 7、 图 8所示， 本实施例以 RGBW像素为例， 子像素包括并排的红色 子像素 R、 绿色子像素 G、 蓝色子像素 B和白色子像素 W。 根据曲面的半径的大 小程度， 如果曲率半径相对比较大， 那么离彩色滤光片基板中心轴 12相对比较 大的区域的 shift的量还比较小，可以自纵向中心轴 12向两侧分别按固定宽度分 为若干区域， 中心轴 12最接近的两侧的区域 tl的黑矩阵宽度保持不变， 与这两 个区域中心区域相连接的向两边区域 t2的黑矩阵的宽度相应增大， 而事实上， 向两侧的相邻区域的 shift增量 a'和 b'的值由于受到材料、 工艺和周边环境的影 响并非呈规律的线性增长， 不过基本规律是可以预见的， 以模拟实验数据得到 的数据为例， 液晶显示屏宽度为 1.2米， 曲率半径为 5m时， 采用 0.7mm厚的玻 璃最大 Shift量为 21.25 μ m， 而采用 0.5mm厚的玻璃最大 Shift量为 14.96 μ m， 也就是说， 如要采用以上两种不同厚度玻璃进行曲面加工， 则需要分别对黑矩 阵加宽的最大数值为 21.25 μ m和 14.96 μ m，而背光板对其相应位置的补偿可以 通过实施例的计算方法得出。 虽然本发明是参照其示例性的实施例被具体描述和显示的， 但是本领域的 普通技术人员应该理解， 在不脱离由权利要求限定的本发明的精神和范围的情 况下， 可以对其进行形式和细节的各种改变。 The invention can effectively solve the phenomenon that the front and rear CF substrates and the TFT substrate are relatively offset due to the bending of the display screen, and effectively solves the problem that the aperture ratio is relatively small and the brightness is insufficient after widening the black matrix width. Through the compensation of the backlight board to solve the problem that the display screen display effect is consistent. The low cost solves the problem of poor display performance in the production of large-size display surfaces. BRIEF DESCRIPTION OF DRAWINGS FIG. 1 is a schematic view of shift between a curved CF substrate and a TFT substrate. 2 is a schematic view showing a dark group occurring between a curved CF substrate and a TFT substrate. 3 is a schematic view showing a color shift between a curved CF substrate and a TFT substrate. 4 is a schematic view showing the width adjustment of the BM of the CF substrate in the first embodiment. Fig. 5 is a schematic view showing an increase in the width of BM of different regions of the CF substrate in the first embodiment. 6 is a schematic view of a liquid crystal display of Embodiment 1. Fig. 7 is a schematic view showing the BM width of the CF substrate sections in the second embodiment. Fig. 8 is a schematic view showing an increase in the width of BM of different regions of the CF substrate in the second embodiment. BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, the present invention will be further described by way of embodiments with reference to the accompanying drawings. Embodiment 1 As shown in FIG. 4, FIG. 5 and FIG. 6, the liquid crystal display includes a TFT substrate 20 (Thin Film Transistor) and a CF substrate 10 (Color Filter substrate, Color Filter) which are connected in parallel, wherein CF A black matrix 11 is disposed on the substrate 10, and a sub-pixel display area is formed at a place not covered by the black matrix 11. When a super-large display is used, if a curved surface, that is, a concave curved display, is used, the distance from the human to the image can be eliminated. The resulting parallax can make the image you see clearer, more natural, and more realistic. However, in the existing liquid crystal display process, the size of the pixel is fixed, that is, the area of the sub-pixel and the black matrix 11 (BM) wrapped around the periphery is relatively unchanged, as shown in the figure, in RGB pixels. As an example, the sub-pixel includes a side-by-side red sub-pixel R, a green sub-pixel G, and a blue sub-pixel B. When the CF substrate 10 and the TFT substrate 20 are simultaneously bent, the sub-pixels originally located on both sides of the CF substrate 10 and the openings on the TFT substrate 20 are misaligned, that is, offset shift, and there are two kinds of offset results. In the case of the regiment, another case is the phenomenon of color shift. In order to solve the above problem, the solution provided by the embodiment is to increase the width of the black matrix 11 for increasing the width of the black matrix 11 when the shift occurs, and still opening the sub-pixel to the opening of the bottom TFT substrate. Partial occlusion prevents the color mixing caused by the display of two different colors in the same TFT opening area. It can be understood that when the CF substrate 10 is bent, the amount of shift occurring from the longitudinal central axis 12 to both sides is gradually increased, and the area of a single pixel unit (including the sub-pixel and the black matrix) is constant. The width of the lower black matrix is gradually increased, and accordingly, the width of the display area of the sub-pixel is gradually decreased. The CF substrate 10 is divided into a plurality of regions from the longitudinal central axis 12 to the two sides by a fixed width. For example, the width of the black matrix of the central region hi to which the central axis belongs remains unchanged, and the width of the black matrix of the two regions h2 connected to the central region increases. The amount of a, the black matrix widths of the regions h3...hn (n is a natural number greater than 1) arranged in order to the both sides are respectively greater than the width of the black matrix of the adjacent inner region, and the width is a, that is, when the region hn When the increment is b. As described above, when the black matrix 11 is widened and the pixel pitch is constant, the sub-pixel display area is reduced, and the aperture ratio is lowered. The direct effect is that the luminance is lowered. For this reason, it can be provided through the back surface of the liquid crystal cell. The backlight 30 performs light compensation, and the amount of light compensation can be adjusted by the change in aperture ratio. Assuming that the black matrix width of the panel is 30 rn and the sub-pixel width is 180 rn, then the width of one sub-pixel unit is 30 μ m+180 μ m=210 rn, then the aperture ratio of the normal hi region of the panel center is 85.7% (rough calculation) For 180/210, the actual aperture ratio should consider the com line at the center of the pixel, the area of shield metal, etc., so the actual aperture ratio will be lower. However, in the h2 and hn regions, the width of the black matrix to be widened is assumed to be 5 μ m and 10 μ m, then the aperture ratios of the h2 and hn regions are simply calculated as 175/210 = 83.3% and 170/210 = 81%, and the h2 and hn regions are reduced by 2.4.7% relative to the normal region. The aperture ratio of % and 2.7% is equalized by the backlight area corresponding to the h2 and hn areas by the backlight.) This can solve the color shift problem and the dark group problem of the curved LCD under the premise of ensuring uniform brightness of the module. . Embodiment 2 As shown in FIG. 7 and FIG. 8, this embodiment takes an RGBW pixel as an example, and the sub-pixel includes a red sub-pixel R, a green sub-pixel G, a blue sub-pixel B, and a white sub-pixel W which are arranged side by side. According to the degree of the radius of the curved surface, if the radius of curvature is relatively large, the amount of shift from the relatively large area of the central axis 12 of the color filter substrate is relatively small, and can be fixed from the longitudinal central axis 12 to both sides. The width is divided into several regions, and the width of the black matrix of the region t1 on the two sides closest to the central axis 12 remains unchanged, and the width of the black matrix to the two-edge region t2 connected to the central regions of the two regions is correspondingly increased, and the fact On the upper side, the shift increments a' and b' of the adjacent areas on both sides are not linearly increased due to the influence of materials, processes and surrounding environment, but the basic law is foreseeable, and the experimental data is obtained. For example, the LCD screen has a width of 1.2 meters. When the radius of curvature is 5m, the maximum Shift of the 0.7mm thick glass is 21.25 μm, and the maximum Shift of the 0.5mm thick glass is 14.96 μm. To say that if you want to use the above two different thickness glasses for surface processing, you need to widen the maximum value of the black matrix separately to 21.25 μ m and 14.96 μ m, and the backlight pair Compensation corresponding position can be obtained by calculating method of this embodiment. While the invention has been particularly shown and described with reference to the exemplary embodiments of the embodiments of the invention Various changes in form and detail.

Claims

权 利 要 求 书 Claim
1、 一种黑矩阵不等宽的彩色滤光片基板， 其中， 彩色滤光片基板为曲面， 其中彩色滤光片基板上设有黑矩阵， 其中未被黑矩阵覆盖的地方形成子像素显 示区域， 其中， 所述彩色滤光片基板自纵向中心轴向两侧的黑矩阵的宽度逐渐 增大。  A color filter substrate having a black matrix unequal width, wherein the color filter substrate is a curved surface, wherein the color filter substrate is provided with a black matrix, wherein a portion not covered by the black matrix forms a sub-pixel display a region in which the width of the black matrix on both sides of the longitudinal center axial direction of the color filter substrate is gradually increased.
2、根据权利 1所述的彩色滤光片基板， 其中， 所述子像素的显示区域的宽 度逐渐减小。 The color filter substrate according to claim 1, wherein a width of a display region of the sub-pixel is gradually decreased.
3、根据权利 1所述的彩色滤光片基板， 其中， 所述彩色滤光片基板自纵向 中心轴向两侧分别按固定宽度分为若干区域， 所述中心轴所属的中心区域或与 中心轴最接近的区域的黑矩阵宽度保持不变， 与中心轴所属的中心区域或中心 轴最接近的区域相连接的区域的黑矩阵宽度增量为 a，依次向两侧边排列的区域 的黑矩阵宽度分别比其相邻的内侧的区域的黑矩阵宽度增量为 a。 The color filter substrate according to claim 1, wherein the color filter substrate is divided into a plurality of regions at a fixed width from both sides in a longitudinal center axial direction, and a center region or a center to which the central axis belongs The black matrix width of the region closest to the axis remains unchanged, and the black matrix width increment of the region connected to the region closest to the central region or the central axis to which the central axis belongs is a, and the black of the regions arranged in order to the both sides The width of the matrix of the matrix whose width is respectively larger than the area of the inner side adjacent thereto is incremented by a.
4、根据权利 1所述的彩色滤光片基板，其中，所述子像素包括红色子像素、 绿色子像素和蓝色子像素。  4. The color filter substrate of claim 1, wherein the sub-pixels comprise a red sub-pixel, a green sub-pixel, and a blue sub-pixel.
5、根据权利 2所述的彩色滤光片基板，其中，所述子像素包括红色子像素、 绿色子像素和蓝色子像素。 5. The color filter substrate of claim 2, wherein the sub-pixels comprise a red sub-pixel, a green sub-pixel, and a blue sub-pixel.
6、根据权利 3所述的彩色滤光片基板，其中，所述子像素包括红色子像素、 绿色子像素和蓝色子像素。 6. The color filter substrate of claim 3, wherein the sub-pixels comprise a red sub-pixel, a green sub-pixel, and a blue sub-pixel.
7、根据权利 1所述的彩色滤光片基板，其中，所述子像素包括红色子像素、 绿色子像素、 蓝色子像素和白色子像素。 7. The color filter substrate of claim 1, wherein the sub-pixels comprise a red sub-pixel, a green sub-pixel, a blue sub-pixel, and a white sub-pixel.
8、根据权利 2所述的彩色滤光片基板，其中，所述子像素包括红色子像素、 绿色子像素、 蓝色子像素和白色子像素。 8. The color filter substrate of claim 2, wherein the sub-pixels comprise a red sub-pixel, a green sub-pixel, a blue sub-pixel, and a white sub-pixel.
9、根据权利 3所述的彩色滤光片基板，其中，所述子像素包括红色子像素、 绿色子像素、 蓝色子像素和白色子像素。 9. The color filter substrate of claim 3, wherein the sub-pixels comprise a red sub-pixel, a green sub-pixel, a blue sub-pixel, and a white sub-pixel.
10、 一种液晶显示器， 包括曲面彩色滤光片基板， 其中彩色滤光片基板上 设有黑矩阵， 其中未被黑矩阵覆盖的地方形成子像素显示区域， 其中， 所述彩 色滤光片基板自纵向中心轴向两侧的黑矩阵的宽度逐渐增大， 相应地， 子像素 的显示区域的宽度逐渐减小。 A liquid crystal display comprising a curved color filter substrate, wherein a color matrix substrate is provided with a black matrix, wherein a portion not covered by the black matrix forms a sub-pixel display region, wherein the color filter substrate The width of the black matrix from both sides of the longitudinal center axial direction gradually increases, and accordingly, the width of the display region of the sub-pixel gradually decreases.
11、根据权利 10所述的液晶显示器， 其中， 所述彩色滤光片基板自纵向中 心轴向两侧分别按固定宽度分为若干区域， 所述中心轴所属的中心区域或与中 心轴最接近的区域的黑矩阵宽度保持不变， 与中心轴所属的中心区域或中心轴 最接近的区域相连接的区域的黑矩阵宽度增量为 a，依次向两侧边排列的区域的 黑矩阵宽度分别比其相邻的内侧的区域的黑矩阵宽度增量为 a。 The liquid crystal display according to claim 10, wherein the color filter substrate is from a longitudinal direction The two sides of the axial axis are respectively divided into several regions according to a fixed width, and the central region to which the central axis belongs or the black matrix width of the region closest to the central axis remains unchanged, and is closest to the central region or the central axis to which the central axis belongs. The black matrix width increment of the region connected to the region is a, and the black matrix width of the region sequentially arranged to the both sides is increased by a larger than the black matrix width of the adjacent inner region.
12、 根据权利 10所述的液晶显示器， 其中， 还包括背光板， 所述背光板设 于液晶盒的背面， 根据对应的区域进行光补偿。  12. The liquid crystal display according to claim 10, further comprising a backlight panel, wherein the backlight panel is disposed on a back surface of the liquid crystal cell, and performs light compensation according to the corresponding region.
13、 根据权利 11所述的液晶显示器， 其中， 还包括背光板， 所述背光板设 于液晶盒的背面， 根据对应的区域进行光补偿。 13. The liquid crystal display according to claim 11, further comprising a backlight panel, wherein the backlight panel is disposed on a back surface of the liquid crystal cell, and performs light compensation according to the corresponding area.
14、 根据权利 10所述的液晶显示器， 其中， 所述子像素包括红色子像素、 绿色子像素和蓝色子像素。 14. The liquid crystal display of claim 10, wherein the sub-pixels comprise a red sub-pixel, a green sub-pixel, and a blue sub-pixel.
15、 根据权利 11所述的液晶显示器， 其中， 所述子像素包括红色子像素、 绿色子像素和蓝色子像素。 15. The liquid crystal display of claim 11, wherein the sub-pixels comprise a red sub-pixel, a green sub-pixel, and a blue sub-pixel.
16、 根据权利 10所述的液晶显示器， 其中， 所述子像素包括红色子像素、 绿色子像素、 蓝色子像素和白色子像素。 16. The liquid crystal display of claim 10, wherein the sub-pixels comprise a red sub-pixel, a green sub-pixel, a blue sub-pixel, and a white sub-pixel.
17、 根据权利 11所述的液晶显示器， 其中， 所述子像素包括红色子像素、 绿色子像素、 蓝色子像素和白色子像素。 17. The liquid crystal display of claim 11, wherein the sub-pixels comprise a red sub-pixel, a green sub-pixel, a blue sub-pixel, and a white sub-pixel.
PCT/CN2014/080541 2014-06-18 2014-06-23 Black matrix unequal-width color filter substrate and liquid crystal display WO2015192384A1 (en)

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