This application is a National Phase of PCT Patent Application No. PCT/CN2014/088721 having International filing date of Oct. 16, 2014, which claims the benefit of priority of Chinese Patent Application No. 201410534282.3 filed on Oct. 11, 2014. The contents of the above applications are all incorporated by reference as if fully set forth herein in their entirety.
1. Field of the Invention
The present invention generally relates to a display field, and more particularly to a manufacture method of a color filter, the color filter and a liquid crystal display panel.
2. Description of Prior Art
A liquid crystal display panel comprises an array substrate, a color filter and a liquid crystal layer positioned between the array substrate and the color filter.
The array substrate comprises data lines, scan lines, pixel electrodes (i.e. transparent electrodes), thin film transistors and an array substrate common electrode. The color filter comprises a black matrix, RGB color filters and a color filter common electrode (also transparent electrode). Storage capacitors are formed between the array substrate common electrode of the non active area of the liquid crystal display panel and the pixel electrodes. Liquid crystal capacitors are formed between the color filter common electrodes and the pixel electrodes.
When the liquid crystal display panel proceeds normal display, the voltage of the color filter common electrode can easily influenced by the data signals on the data lines and the scan signals on the scan lines. Meanwhile, the resistance of the color filter common electrode is larger. Therefore, the stability of the common voltage at the common electrode of the of the color filter is worse to lead to that the bias voltage of the liquid crystal molecules in the liquid crystal layer is instable and the display quality of the liquid crystal display panel descends.
Therefore, there is a need to provide a manufacture method of a color filter, the color filter and a liquid crystal display panel for solving the aforesaid existing issue in prior arts.
An objective of the present invention is to provide a manufacture method of a color filter, the color filter and a liquid crystal display panel which are capable of preferably releasing the common voltage at the common electrode of the color filter to resolve the technical issue of unstable bias voltage of the liquid crystal molecules in the liquid crystal layer caused by the worse stability of the common voltage at the common electrode of the of the color filter and the liquid crystal display panel according to prior arts.
For solving the aforesaid issue, the present invention provides the following technical solution:
the embodiment of the present invention provides a manufacture method of the color filter, comprising:
In the manufacture method of the color filter of the present invention, the step of removing the metal layer in the color filter area and the black matrix layer in the through hole area comprises:
In the manufacture method of the color filter of the present invention, the step of removing the metal layer in the color filter area and the black matrix layer in the through hole area comprises:
In the manufacture method of the color filter of the present invention, the transparent electrode is connected to the metal layer via the through hole.
In the manufacture method of the color filter of the present invention, the black matrix area encircles the through hole area.
In the manufacture method of the color filter of the present invention, the through hole area of the substrate is positioned between the RGB color filters of the same color.
In the manufacture method of the color filter of the present invention, the through hole area of the substrate is positioned between the RGB color filters of different colors.
The present invention further provides a color filter, comprising:
In the color filter of the present invention, the black matrix area encircles the through hole area.
In the color filter of the present invention, the transparent electrode is connected to the metal layer via the through hole.
In the color filter of the present invention, the through hole area of the substrate is positioned between the RGB color filters of the same color.
In the color filter of the present invention, the through hole area of the substrate is positioned between the RGB color filters of different colors.
The present invention further provides a liquid crystal display panel, comprising an array substrate, a color filter and a liquid crystal layer positioned between the array substrate and the color filter;
wherein the color filter comprises:
In the liquid crystal display panel of the present invention, the black matrix area encircles the through hole area.
In the liquid crystal display panel of the present invention, the transparent electrode is connected to the metal layer via the through hole.
In the liquid crystal display panel of the present invention, the through hole area of the substrate is positioned between the RGB color filters of the same color.
In the liquid crystal display panel of the present invention, the through hole area of the substrate is positioned between the RGB color filters of different colors.
Compared with the color filter and the liquid crystal display panel according to prior arts, the manufacture method of a color filter, the color filter and the liquid crystal display panel of the present invention are capable of rapidly releasing the electric charges accumulated at the transparent electrode of the color filter (the common electrode of the color filter) by connecting the transparent electrode of the color filter and the metal layer via the through hole for making the bias voltage of the liquid crystal molecules in the liquid crystal layer stable to improve the display quality of the liquid crystal display panel; the technical issue of unstable bias voltage of the liquid crystal molecules in the liquid crystal layer caused by the worse stability of the common voltage at the common electrode of the of the color filter and the liquid crystal display panel according to prior arts can be solved.
For a better understanding of the aforementioned content of the present invention, preferable embodiments are illustrated in accordance with the attached figures for further explanation:
The following descriptions for the respective embodiments are specific embodiments capable of being implemented for illustrations of the present invention with referring to appended figures. For example, the terms of up, down, front, rear, left, right, interior, exterior, side, etcetera are merely directions of referring to appended figures. Therefore, the wordings of directions are employed for explaining and understanding the present invention but not limitations thereto.
In figures, the elements with similar structures are indicated by the same number.
The present invention provides a manufacture method of the color filter. Please refer to
The manufacture method of a color filter according to the preferred embodiment comprises:
The specific procedures of respective steps of the manufacture method of the color filter according to the preferred embodiment of the present invention are described below.
In the Step S101, a substrate 21, such as a glass substrate is provided. A metal layer 22 and a black matrix layer 23 are sequentially deposed on the substrate. The material of the metal layer 22 can be nobelium, molybdenum, aluminum, copper, titanium, tantalum, tungsten, et cetera. Specifically as shown in
In the Step S102, a half tone mask 24 (HTM) is employed to implement a patterning process to the black matrix layer 23 (the half tone mask 24 is employed to implement exposure, development and photo resist stripping operations). The color filter area of the substrate 21 corresponds to the shielding area 241 of the half tone mask 24. The black matrix area of the substrate 21 corresponds to the full light transmittance area 242 of the half tone mask 24. The through hole area of the substrate 21 corresponds to the half light transmittance area 243 of the half tone mask 24. Please refer to
After the photo resist stripping operation, the black matrix layer 23 corresponding to the color filter area of the substrate 21 is entirely removed. The black matrix layer 23 in the through hole area of the substrate 21 is partially removed. The black matrix layer 23 in the black matrix area of the substrate 21 is entirely reserved. The specific detail is shown in
In the Step S103, the metal layer 22 corresponding to the color filter area of the substrate 21 and the black matrix layer 23 corresponding to the through hole area of the substrate 21 are removed to form a black matrix 26 and a through hole 27. Specifically, a wet etching method is employed to remove the metal layer 22 in the color filter area of the substrate 21. As shown in
In the Step S104, a RGB color filter layer can be directly coated in the color filter area of the substrate because the metal layer 22 corresponding to the color filter area of the substrate 21 has been removed. Accordingly, a RGB color filter 25 is formed on the color filter area of the substrate 21 as shown in
In the Step S105, a transparent metal layer is deposed on the color filter area, the black matrix area and the through hole area of the substrate 21. The transparent metal layer can be formed with ITO (indium-tin-oxide). Thereby, a transparent electrode 28 of the color filter is formed on the top of the substrate as shown in
Accordingly, the manufacture procedures of the color filter according to the preferred embodiment are accomplished.
The manufacture method of the color filter according to the preferred embodiment is capable of rapidly releasing the electric charges accumulated at the transparent electrode of the color filter (the common electrode of the color filter) by connecting the transparent electrode of the color filter and the metal layer via the through hole for making the bias voltage of the liquid crystal molecules in the liquid crystal layer stable to improve the display quality of the liquid crystal display panel.
The present invention further provides a color filter as shown in
By connecting the transparent electrode 28 to the metal layer 22 via the through hole 27 in the preferred embodiment, the electric charges accumulated at the transparent electrode 28 of the color filter can he rapidly released to prevent the instability of the common voltage at the transparent electrode 28 of the color filter.
Meanwhile, the black matrix area of the substrate 21 encircles the through hole area of the substrate 21. Please refer to
Please refer to
The color filter according to the preferred embodiment is capable of rapidly releasing the electric charges accumulated at the transparent electrode of the color filter (the common electrode of the color filter) by connecting the transparent electrode of the color filter and the metal layer via the through hole for making the bias voltage of the liquid crystal molecules in the liquid crystal layer stable to improve the display quality of the liquid crystal display panel.
The present invention further provides a liquid crystal display panel. The liquid crystal display panel comprises an array substrate, a color filter and a liquid crystal layer positioned between the array substrate and the color filter. The color filter comprises a substrate, a RGB color filter, a metal layer, a black matrix and a transparent electrode; the substrate comprises a color filter area, a black matrix area and a through hole area; the RGB color filter is positioned in the color filter area; the metal layer is positioned in the black matrix area and the through hole area of the substrate; the black matrix is positioned on the metal layer in the black matrix area; the transparent electrode is positioned on the RGB color filter, the metal layer in the through hole area and the black matrix.
Preferably, the black matrix area of the substrate of the color filter encircles the through hole area of the color filter in the liquid crystal display panel of the present invention.
Preferably, the through hole area of the substrate of the color filter is positioned between the RGB color filters of different colors in the liquid crystal display panel of the present invention.
Preferably, the through hole area of the substrate of the color filter is positioned between the RGB color filters of the same color in the liquid crystal display panel of the present invention.
The specific working principle of the liquid crystal display panel is the same or similar to that of the preferred embodiment of the aforesaid color filter. Please refer to the related description in the preferred embodiment of the aforesaid color filter for the specific detail.
The manufacture method of a color filter, the color filter and the liquid crystal display panel of the present invention are capable of rapidly releasing the electric charges accumulated at the transparent electrode of the color filter (the common electrode of the color filter) by connecting the transparent electrode of the color filter and the metal layer via the through hole for making the bias voltage of the liquid crystal molecules in the liquid crystal layer stable to improve the display quality of the liquid crystal display panel; the technical issue of unstable bias voltage of the liquid crystal molecules in the liquid crystal layer caused by the worse stability of the common voltage at the common electrode of the of the color filter and the liquid crystal display panel according to prior arts can be solved.
As is understood by a person skilled in the art, the foregoing preferred embodiments of the present invention are illustrative rather than limiting of the present invention. It is intended that they cover various modifications and similar arrangements be included within the spirit and scope of the appended claims, the scope of which should be accorded the broadest interpretation so as to encompass all such modifications and similar structures.
Number | Date | Country | Kind |
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2014 1 0534282 | Oct 2014 | CN | national |
Filing Document | Filing Date | Country | Kind |
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PCT/CN2014/088721 | 10/16/2014 | WO | 00 |
Publishing Document | Publishing Date | Country | Kind |
---|---|---|---|
WO2016/054834 | 4/14/2016 | WO | A |
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Number | Date | Country | |
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20160103355 A1 | Apr 2016 | US |