CN202141873U - Color filter and LCD panel - Google Patents

Abstract

Translated fromChinese

本实用新型涉及液晶显示技术领域，提供了一种彩色滤光片及液晶面板。所述彩色滤光片包括：形成有公共电极层的玻璃基板，以及在所述形成有公共电极层的玻璃基板的一面上依次形成的黑矩阵、彩色滤光膜；其中，所述公共电极层的图案与所述黑矩阵的图案相同。本实用新型利用成形后的黑矩阵图案作为构图母版对公共电极层进行刻蚀，从而形成与黑矩阵图案相同的公共电极层，由此得到的彩色滤光片由于在黑矩阵的开口区没有公共电极层的阻挡，可以显著提高彩色滤光片的透过率，从而提高了液晶显示器件的亮度、节约了功耗并降低了成本。

The utility model relates to the technical field of liquid crystal display and provides a color filter and a liquid crystal panel. The color filter includes: a glass substrate formed with a common electrode layer, and a black matrix and a color filter film sequentially formed on one side of the glass substrate formed with the common electrode layer; wherein the common electrode layer The pattern of is the same as that of the black matrix. The utility model uses the formed black matrix pattern as a composition master to etch the common electrode layer, thereby forming the same common electrode layer as the black matrix pattern, and the color filter thus obtained has no The blocking of the common electrode layer can significantly increase the transmittance of the color filter, thereby improving the brightness of the liquid crystal display device, saving power consumption and reducing cost.

Description

Translated fromChinese

彩色滤光片及液晶面板Color filter and LCD panel

技术领域technical field

本实用新型涉及液晶显示技术领域，特别涉及一种彩色滤光片及液晶面板。 The utility model relates to the technical field of liquid crystal display, in particular to a color filter and a liquid crystal panel. the

背景技术Background technique

LCD(Liquid Crystal Display，液晶显示)装置具有重量轻、厚度薄、功耗低和辐射小等优点，已被广泛用于信息技术、多媒体技术等领域，并逐渐成为各种显示装置的主流。随着显示技术的发展，高透过率、大尺寸、低功耗、低成本的液晶显示器成为未来发展的方向。 LCD (Liquid Crystal Display) devices have the advantages of light weight, thin thickness, low power consumption, and low radiation. They have been widely used in information technology, multimedia technology and other fields, and have gradually become the mainstream of various display devices. With the development of display technology, liquid crystal displays with high transmittance, large size, low power consumption and low cost have become the direction of future development. the

要想使液晶面板实现彩色显示，彩色滤光片(CF，Color Filter)是重要的部件之一，其性能对液晶显示的效果有着重要的影响。由于彩色滤光片决定了显示器的彩色显示质量和亮度，因而分光透射率和色调等色彩显示性能对彩色滤光片来说非常重要。 In order to realize the color display of the liquid crystal panel, the color filter (CF, Color Filter) is one of the important components, and its performance has an important influence on the effect of the liquid crystal display. Since color filters determine the color display quality and brightness of a display, color display properties such as spectral transmittance and hue are very important for color filters. the

图1是现有技术中彩色滤光片常见的一个像素单元的平面结构示意图，在黑矩阵(BM，Black Matrix)围成的一个像素单元中形成有红(R)、绿(G)、蓝(B)三个彩色子像素单元，此外，在黑矩阵某区域上还形成有用于支撑的隔垫物(PS，Photo Spacer)，隔垫物通常为柱状。 Fig. 1 is a schematic plan view of a common pixel unit of a color filter in the prior art, in which a pixel unit surrounded by a black matrix (BM, Black Matrix) is formed with red (R), green (G), blue (B) Three color sub-pixel units. In addition, a spacer (PS, Photo Spacer) for support is formed on a certain area of the black matrix. The spacer is usually columnar. the

在现有工艺中，彩色滤光片的制造一般包括依次形成公共电极(通常为ITO或IZO等透明导电膜)、黑矩阵、RGB彩色滤光膜、保护层(OC，OverCoat，又称覆盖层)、隔垫物的制备流程。由此得到的彩色滤光片一种常见的层次结构如图2所示，图2为沿图1中A-A方向获得的截面示意图，该常见的层次结构主要由公共电极层(ITO膜)2、玻璃基板1、黑矩阵3、彩色滤光膜4、保护层5和隔垫物6依次构成。 In the existing process, the manufacture of color filters generally includes sequentially forming a common electrode (usually a transparent conductive film such as ITO or IZO), a black matrix, an RGB color filter film, and a protective layer (OC, OverCoat, also known as a cover layer). ), the preparation process of the spacer. A common hierarchical structure of the resulting color filter is shown in Figure 2. Figure 2 is a schematic cross-sectional view obtained along the A-A direction in Figure 1. This common hierarchical structure is mainly composed of a common electrode layer (ITO film) 2,A glass substrate 1 , ablack matrix 3 , acolor filter film 4 , aprotective layer 5 and aspacer 6 are sequentially formed. the

在图2的层次结构中公共电极层2形成于玻璃基板1背面(即与BM 等所在面不同的面)的整个表面上，在制备的最初或最后的步骤时形成。当然也公共电极层2可以形成于玻璃基板1正面(即BM等所在的面)位于保护层5之上的整个表面上，在保护层之后制备形成。 In the hierarchical structure of FIG. 2, thecommon electrode layer 2 is formed on the entire surface of the back of the glass substrate 1 (that is, a surface different from the surface where the BM etc. are located), and is formed during the initial or final step of preparation. Of course, thecommon electrode layer 2 can also be formed on the entire surface of the front surface of the glass substrate 1 (that is, the surface where the BM etc. are located) above theprotective layer 5, and be prepared and formed after the protective layer. the

无论是上述哪种结构，现有技术的不足主要体现在：由于公共电极层2形成于彩色滤光片的整个表面上，即在黑矩阵的开口区(即彩色子像素单元所在区域)也存在有公共电极层，在光线透射时必然会造成一定损失从而影响面板的透过率，影响液晶面板的亮度和显示效果。如果要克服此缺陷就需要增加背光源数目提高背光的亮度，这又会造成功耗的消耗，浪费成本。 Regardless of the above-mentioned structure, the deficiency of the prior art is mainly reflected in that: since thecommon electrode layer 2 is formed on the entire surface of the color filter, it also exists in the opening area of the black matrix (ie, the area where the color sub-pixel unit is located). There is a common electrode layer, which will inevitably cause a certain loss when the light is transmitted, thereby affecting the transmittance of the panel, and affecting the brightness and display effect of the liquid crystal panel. If this defect is to be overcome, the number of backlight sources needs to be increased to increase the brightness of the backlight, which in turn causes consumption of power consumption and wastes costs. the

实用新型内容Utility model content

(一)要解决的技术问题 (1) Technical problems to be solved

针对上述缺点，本实用新型为了解决现有技术中公共电极造成彩色滤光片透过率低的问题，提供了一种彩色滤光片及液晶面板，通过简单的结构和工艺形成与黑矩阵相同图案的公共电极层，使得光线在透射过彩色子像素单元区域时尽可能减少损失，提高了彩色滤光片的透过率。 In view of the above-mentioned shortcomings, the utility model provides a color filter and a liquid crystal panel in order to solve the problem of low transmittance of the color filter caused by the common electrode in the prior art, which is formed by a simple structure and process, which is the same as the black matrix. The patterned common electrode layer reduces the loss of light as much as possible when it is transmitted through the color sub-pixel unit area, and improves the transmittance of the color filter. the

(二)技术方案 (2) Technical plan

为解决上述技术问题，本实用新型具体采用如下方案进行： In order to solve the problems of the technologies described above, the utility model specifically adopts the following scheme to carry out:

首先，本实用新型提供一种彩色滤光片，所述彩色滤光片包括： First of all, the utility model provides a color filter, and the color filter includes:

在某一面上形成有公共电极层的玻璃基板， A glass substrate with a common electrode layer formed on one side,

以及在所述形成有公共电极层的玻璃基板的一面上依次形成的黑矩阵、彩色滤光膜； And a black matrix and a color filter film sequentially formed on one side of the glass substrate on which the common electrode layer is formed;

其中，所述公共电极层的图案与所述黑矩阵的图案相同。 Wherein, the pattern of the common electrode layer is the same as that of the black matrix. the

优选地，所述黑矩阵与所述公共电极层位于所述玻璃基板的同一面，所述黑矩阵覆盖于所述公共电极层之上。 Preferably, the black matrix and the common electrode layer are located on the same surface of the glass substrate, and the black matrix covers the common electrode layer. the

优选地，所述黑矩阵形成于与所述公共电极层相对的所述玻璃基板的相对面上。 Preferably, the black matrix is formed on an opposite surface of the glass substrate opposite to the common electrode layer. the

优选地，所述公共电极层为ITO或IZO形成的透明导电薄膜。 Preferably, the common electrode layer is a transparent conductive film formed of ITO or IZO. the

优选地，在所述黑矩阵、彩色滤光膜上形成有保护层、隔垫物。 Preferably, a protective layer and a spacer are formed on the black matrix and the color filter film. the

优选地，以所述黑矩阵的图案作为构图母版的所述公共电极层具有与所述黑矩阵完全重合的图案。 Preferably, the common electrode layer using the pattern of the black matrix as a pattern master has a pattern that completely overlaps with the black matrix. the

更进一步地，本实用新型同时提供一种液晶面板，所述液晶面板中包含如上所述的彩色滤光片。 Further, the utility model also provides a liquid crystal panel, the liquid crystal panel includes the above-mentioned color filter. the

(三)有益效果 (3) Beneficial effects

本实用新型利用成形后的黑矩阵图案作为构图母版对公共电极层进行刻蚀，从而形成与黑矩阵图案相同的公共电极层，由此得到的彩色滤光片由于在黑矩阵的开口区没有公共电极层的阻挡，可以显著提高彩色滤光片的透过率，从而提高了液晶显示器件的亮度、节约了功耗并降低了成本。 The utility model uses the formed black matrix pattern as a composition master to etch the common electrode layer, thereby forming the same common electrode layer as the black matrix pattern, and the color filter thus obtained has no The blocking of the common electrode layer can significantly increase the transmittance of the color filter, thereby improving the brightness of the liquid crystal display device, saving power consumption and reducing cost. the

附图说明Description of drawings

图1为彩色滤光片常见的一个像素单元的平面结构示意图； Figure 1 is a schematic plan view of a pixel unit common to color filters;

图2为现有技术中的彩色滤光片常见的层次结构示意图； FIG. 2 is a schematic diagram of a common hierarchical structure of color filters in the prior art;

图3为本实用新型中实施例1的彩色滤光片的层次结构示意图； Fig. 3 is the hierarchical structure schematic diagram of the color filter ofembodiment 1 in the utility model;

图4为本实用新型实施例1中形成公共电极层之后的平面示意图； Fig. 4 is the schematic plan view after forming common electrode layer in theutility model embodiment 1;

图5为本实用新型实施例1中形成黑矩阵图案之后的平面示意图； Fig. 5 is the schematic plan view after forming black matrix pattern in theutility model embodiment 1;

图6为本实用新型实施例1中形成黑矩阵图案之后的层次结构示意图； Fig. 6 is the hierarchical structure schematic diagram after forming black matrix pattern in theutility model embodiment 1;

图7为本实用新型实施例1中形成公共电极层图案之后的层次结构示意图； Figure 7 is a schematic diagram of the hierarchical structure after the common electrode layer pattern is formed inEmbodiment 1 of the utility model;

图8为本实用新型中实施例2的彩色滤光片的层次结构示意图。 FIG. 8 is a schematic diagram of the layered structure of the color filter inEmbodiment 2 of the present invention. the

具体实施方式Detailed ways

下面将结合本实用新型实施例中的附图，对本实用新型实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例是本实用新型的一部分实施例，而不是全部的实施例。基于本实用新型中的实 施例，本领域普通技术人员在没有做出创造性劳动的前提下所获得的所有其他实施例，都属于本实用新型保护的范围。 The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of them. example. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts all belong to the protection scope of the present invention. the

本实用新型利用成形后的黑矩阵图案作为构图母版对公共电极层进行刻蚀，从而形成与黑矩阵图案相同的公共电极层，由此可以得到在黑矩阵的开口区(即彩色子像素单元所在区域)没有公共电极层阻挡的彩色滤光片，由于不存在阻挡彩色子像素单元区域透射光的公共电极层，因而本实用新型中的彩色滤光片的透过率得到了显著的提升。 The utility model uses the formed black matrix pattern as a composition master to etch the common electrode layer, thereby forming the same common electrode layer as the black matrix pattern, thereby obtaining area) without the color filter blocked by the common electrode layer, since there is no common electrode layer blocking the transmitted light in the color sub-pixel unit area, the transmittance of the color filter in the utility model has been significantly improved. the

具体地，本实用新型中的彩色滤光片可以采取下述实施例中描述的方式构成。 Specifically, the color filter in the present invention can be constructed in the manner described in the following embodiments. the

实施例1 Example 1

本实用新型的实施例1如图3所示，图3同样为沿图1中A-A方向获得的截面示意图，其表示了本实用新型实施例1的层次结构，在图3所示的层次结构中，彩色滤光片由玻璃基板1以及在玻璃基板1的一面上依次形成的公共电极层2、黑矩阵3、彩色滤光膜4、保护层5和隔垫物6构成；其中，公共电极层2的图案与黑矩阵3的图案相同。在本实施例1中，公共电极层2与黑矩阵3形成于玻璃基板1的同一面上，黑矩阵3直接覆盖于公共电极层2之上。 Embodiment 1 of the present utility model is shown in Figure 3, and Figure 3 is a schematic cross-sectional view obtained along the A-A direction in Figure 1, which shows the hierarchical structure ofEmbodiment 1 of the present utility model, in the hierarchical structure shown in Figure 3 , the color filter is composed of aglass substrate 1 and acommon electrode layer 2, ablack matrix 3, acolor filter film 4, aprotective layer 5 and aspacer 6 formed sequentially on one side of theglass substrate 1; wherein the common electrode layer The pattern of 2 is the same as the pattern ofblack matrix 3. In the first embodiment, thecommon electrode layer 2 and theblack matrix 3 are formed on the same surface of theglass substrate 1 , and theblack matrix 3 directly covers thecommon electrode layer 2 . the

本实施例1的彩色滤光片具体采用如下方式制备： The color filter of thepresent embodiment 1 is specifically prepared in the following manner:

首先，如图4所示，在玻璃基板1的一面上溅射一层ITO或IZO的透明导电薄膜以形成公共电极层2； First, as shown in Figure 4, a transparent conductive film of ITO or IZO is sputtered on one side of theglass substrate 1 to form acommon electrode layer 2;

其次，如图5所示，在公共电极层2之上采用常规的方式进行黑矩阵工艺(如涂布、曝光、显影等一系列处理)，得到具有特定图案的黑矩阵3；此时得到产品的层次结构如图6所示，图6是沿图5中B-B方向获得的截面图； Next, as shown in Figure 5, the black matrix process (such as a series of treatments such as coating, exposure, and development) is carried out in a conventional manner on thecommon electrode layer 2 to obtain ablack matrix 3 with a specific pattern; at this time, the product The hierarchical structure of is shown in Figure 6, and Figure 6 is a cross-sectional view obtained along the B-B direction in Figure 5;

随后，利用黑矩阵3的图案作为刻蚀公共电极层2的构图母版，对公共电极层2进行刻蚀，从而使得公共电极层2的图案与黑矩阵3的图 案完全相同；此时得到的产品的层次结构如图7所示； Subsequently, the pattern of theblack matrix 3 is used as the pattern master for etching thecommon electrode layer 2, and thecommon electrode layer 2 is etched, so that the pattern of thecommon electrode layer 2 is exactly the same as that of theblack matrix 3; The hierarchical structure of the product is shown in Figure 7;

最后，再在黑矩阵3之上依次形成彩色滤光膜4、保护层5和隔垫物6，形成如图3所示的彩色滤光片。 Finally, acolor filter film 4 , aprotection layer 5 and aspacer 6 are sequentially formed on theblack matrix 3 to form a color filter as shown in FIG. 3 . the

实施例2 Example 2

本实用新型的实施例2如图8所示，图8同样为沿图1中A-A方向获得的截面示意图，其表示了本实用新型实施例2的层次结构，在图8所示的层次结构中，与实施例1的区别仅在于公共电极层2与黑矩阵3分别位于玻璃基板1的上下两个面上，在黑矩阵3之上的其余各层的层次结构没有区别。 Embodiment 2 of the present utility model is shown in Figure 8, and Figure 8 is also a schematic cross-sectional view obtained along the A-A direction in Figure 1, which shows the hierarchical structure ofEmbodiment 2 of the present utility model, in the hierarchical structure shown in Figure 8 The difference fromEmbodiment 1 is only that thecommon electrode layer 2 and theblack matrix 3 are respectively located on the upper and lower surfaces of theglass substrate 1 , and there is no difference in the hierarchical structure of the other layers above theblack matrix 3 . the

在本实施例2中，首先分别在玻璃基板1的两个面上形成公共电极层2和具有特定图案的黑矩阵3，与实施例1不同的是，公共电极层2并不一定严格要求在制备黑矩阵3之前形成，在准备制备彩色滤光膜4之前的任一步骤中溅射一层ITO或IZO的透明导电薄膜形成公共电极层2即可。 In thisembodiment 2, thecommon electrode layer 2 and theblack matrix 3 with a specific pattern are firstly formed on the two surfaces of theglass substrate 1 respectively. Unlike theembodiment 1, thecommon electrode layer 2 is not necessarily strictly required It is formed before theblack matrix 3 is prepared, and a layer of transparent conductive film of ITO or IZO is sputtered to form thecommon electrode layer 2 in any step before the preparation of thecolor filter film 4 . the

在得到具有特定图案的黑矩阵3之后，利用黑矩阵3的图案作为刻蚀公共电极层2的构图母版(本实施例2中可作为掩膜版，由于玻璃基板1和公共电极层2透明，可使得光线透过而进行曝光)，对公共电极层2进行刻蚀，从而使得公共电极层2的图案与黑矩阵3的图案完全相同； After obtaining theblack matrix 3 with a specific pattern, use the pattern of theblack matrix 3 as a pattern master for etching the common electrode layer 2 (can be used as a mask plate in thisembodiment 2, because theglass substrate 1 and thecommon electrode layer 2 are transparent , allowing light to pass through for exposure), thecommon electrode layer 2 is etched, so that the pattern of thecommon electrode layer 2 is exactly the same as the pattern of theblack matrix 3;

最后，再在黑矩阵3之上依次形成彩色滤光膜4、保护层5和隔垫物6，形成如图8所示的彩色滤光片。 Finally, acolor filter film 4 , aprotective layer 5 and aspacer 6 are sequentially formed on theblack matrix 3 to form a color filter as shown in FIG. 8 . the

在本实用新型中，由于公共电极层与黑矩阵的图案完全相同，因而在黑矩阵的开口区(即彩色子像素单元所在区域)不存在公共电极层的阻挡，使得背光源发出的光在透射过彩色子像素单元所在区域时降低了损失，因而可以显著地提升彩色滤光片的透过率，无需增加背光源数目或强度即可提高液晶显示器件的亮度，节约了功耗并降低了成本。本实用新型中的彩色滤光片由于制备工艺简单、性能优越且显 示效果好，可广泛地应用于液晶面板和液晶显示装置中。 In the utility model, since the pattern of the common electrode layer is exactly the same as that of the black matrix, there is no barrier of the common electrode layer in the opening area of the black matrix (that is, the area where the color sub-pixel unit is located), so that the light emitted by the backlight is transmitted When passing through the area where the color sub-pixel unit is located, the loss is reduced, so the transmittance of the color filter can be significantly improved, and the brightness of the liquid crystal display device can be improved without increasing the number or intensity of the backlight source, saving power consumption and reducing costs . The color filter in the utility model can be widely used in liquid crystal panels and liquid crystal display devices due to its simple preparation process, superior performance and good display effect. the

以上实施方式仅用于说明本实用新型，而并非对本实用新型的限制，有关技术领域的普通技术人员，在不脱离本实用新型的精神和范围的情况下，还可以做出各种变化和变型，因此所有等同的技术方案也属于本实用新型的范畴，本实用新型的实际保护范围应由权利要求限定。 The above embodiments are only used to illustrate the utility model, but not to limit the utility model. Those of ordinary skill in the relevant technical fields can also make various changes and modifications without departing from the spirit and scope of the utility model. , so all equivalent technical solutions also belong to the category of the utility model, and the actual protection scope of the utility model should be defined by the claims. the

Claims (7)

Translated fromChinese

1.一种彩色滤光片，其特征在于，所述彩色滤光片包括：1. A color filter, characterized in that the color filter comprises:形成有公共电极层的玻璃基板，a glass substrate formed with a common electrode layer,以及在所述形成有公共电极层的玻璃基板的一面上依次形成的黑矩阵、彩色滤光膜；And a black matrix and a color filter film sequentially formed on one side of the glass substrate on which the common electrode layer is formed;其中，所述公共电极层的图案与所述黑矩阵的图案相同。Wherein, the pattern of the common electrode layer is the same as that of the black matrix.2.根据权利要求1所述的彩色滤光片，其特征在于，所述黑矩阵与所述公共电极层位于所述玻璃基板的同一面，所述黑矩阵覆盖于所述公共电极层之上。2. The color filter according to claim 1, wherein the black matrix and the common electrode layer are located on the same surface of the glass substrate, and the black matrix covers the common electrode layer .3.根据权利要求1所述的彩色滤光片，其特征在于，所述黑矩阵形成于与所述公共电极层相对的所述玻璃基板的相对面上。3. The color filter according to claim 1, wherein the black matrix is formed on an opposite surface of the glass substrate opposite to the common electrode layer.4.根据权利要求1所述的彩色滤光片，其特征在于，所述公共电极层为ITO或IZO形成的透明导电薄膜。4. The color filter according to claim 1, wherein the common electrode layer is a transparent conductive film formed of ITO or IZO.5.根据权利要求1-4任一项所述的彩色滤光片，其特征在于，在所述黑矩阵、彩色滤光膜上形成有保护层、隔垫物。5 . The color filter according to claim 1 , wherein a protective layer and a spacer are formed on the black matrix and the color filter film.6.根据权利要求1-4任一项所述的彩色滤光片，其特征在于，以所述黑矩阵的图案作为构图母版的所述公共电极层具有与所述黑矩阵完全重合的图案。6. The color filter according to any one of claims 1-4, wherein the common electrode layer using the pattern of the black matrix as a pattern master has a pattern that completely overlaps with the black matrix .7.一种液晶面板，其特征在于，所述液晶面板中包含如权利要求1-6任一项所述的彩色滤光片。7. A liquid crystal panel, characterized in that the liquid crystal panel comprises the color filter according to any one of claims 1-6.

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