COA (color filter on array) substrate, production method thereof and display device

Abstract

An embodiment of the invention provides a COA (color filter on array) substrate, a production method thereof and a display device and relates to the technical field of display. By the aid of the COA substrate, the production method thereof and the display device, the problem that large parasitic capacitance can be generated between a common electrode and a grid line and / or between the common electrode and a data line in the prior art is solved, signal delay is avoided, normal transmission of signals is guaranteed, and the display quality of pictures of the display device is improved. The COA substrate comprises a grid line, a data line, a common electrode layer and a black matrix, wherein the black matrix is arranged between the grid line and the common electrode layer and / or between the data line and the common electrode layer and is made of metal materials. The COA substrate, the production method thereof and the display device are applied to the display device production technology.

Description

technical field [0001] The invention relates to the field of display technology, in particular to a COA substrate, a manufacturing method thereof, and a display device. Background technique [0002] Display devices such as Liquid Crystal Display (LCD for short) and Organic electroluminescent device (OLED for short) have become necessities in people's lives. With the improvement of people's needs, in order to improve the display quality of display devices To avoid the deviation of the array substrate and the color filter substrate when the box is aligned, affecting the aperture ratio of the display device and the problem of light leakage, the integrated technology (Color Filter on Array, COA for short) that integrates the color filter and the array substrate is born. COA technology is to arrange black matrix and color filter on the array substrate. [0003] The existing black matrix is ​​generally composed of resin coated with carbon black particles, and the carbon black par...

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Problems solved by technology

[0004] Embodiments of the present invention provide a COA substrate, its manufacturing method, and a display device, which solve the problem of large parasitic capacitance between the common electrode and the gate line and / or between the common electrode and the data line in the prior art solution , to avoid signal delay, to ensure the normal transmission of the signal, and to improve the display quality of the screen of the display device

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