COA (color-filter on array) substrate

A technology of array substrates and common electrode lines, applied in nonlinear optics, instruments, optics, etc., can solve the problems of accumulation on the periphery of deep holes, affecting product quality, and uneven brightness of products, so as to improve product quality and save equipment renovation and upgrading The cost, the effect of improving the problem of twill mura

Active Publication Date: 2017-06-13
SHENZHEN CHINA STAR OPTOELECTRONICS TECH CO LTD
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Problems solved by technology

[0009] However, due to the introduction of deep holes in the pixel structure, the corresponding requirements for the performance of PI coating equipment will also increase, because in the general case of PI coating equipment capabilities (the minimum amount of PI droplets spit out is 75ng), Due to the surface tension of PI liquid, poor diffusion of PI liquid near the deep hole will occu

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[0039] In order to further illustrate the technical means adopted by the present invention and its effects, the following describes in detail in conjunction with preferred embodiments of the present invention and accompanying drawings.

[0040] DBS (that is, Data Line BM Less) pixel design is covered with ITO (that is, indium tin oxide) traces above the data lines. Lines) to form the DBS common electrode lines. When the liquid crystal panel is working normally, the electric field formed by these ITO lines can keep the liquid crystal molecules in a non-deflected state, thereby achieving the purpose of shading, and thus saving the data lines in the liquid crystal panel. The black matrix at the position increases the aperture ratio, so this design is being used more and more.

[0041] Then, for the COA liquid crystal display panel adopting 3T design and DBS design at the same time, on the array substrate, since the DBS common electrode line and the floating ITO in the deep hole a...

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Abstract

The invention provides a COA (color-filter on array) substrate. 3T design and DBS (data line BM less) design are adopted simultaneously, in each pixel unit, a source of a shared thin film transistor is electrically connected with the corresponding metal common electrode wire through a floating block arranged in a first via hole, and the floating block is electrically connected with a DBS common electrode wire through a first lead introduced into the first via hole where the floating block is located. By means of the characteristic that DBS common electrode wires are idiostaic with floating blocks, the DBS common electrode wires are electrically connected with the floating blocks through the first leads, that is, the first leads are introduced into the first via holes where the floating blocks are located, so that a PI (polyimide) liquid flows conveniently into the first via holes where the floating blocks are located in a PI process under the drainage action of the first leads, mura of sloping grains can be improved effectively, product quality is improved, and cost for equipment transformation and upgrading is saved.

Description

technical field [0001] The present invention relates to the field of display technology, in particular to a COA type array substrate. Background technique [0002] A liquid crystal display (Liquid Crystal Display, LCD) has many advantages such as a thin body, power saving, and no radiation, and has been widely used. Such as: LCD TV, mobile phone, personal digital assistant (PDA), digital camera, computer screen or laptop screen, etc. [0003] Generally, a liquid crystal display device includes a housing, a liquid crystal panel disposed in the housing, and a backlight module disposed in the housing. Among them, the structure of the liquid crystal panel is mainly composed of a thin film transistor array (Thin Film Transistor Array, TFT Array) substrate, a color filter (Color Filter, CF) substrate, and a liquid crystal layer (Liquid Crystal Layer) arranged between the two substrates. Its working principle is to control the rotation of the liquid crystal molecules in the liqui...

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Application Information

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IPC IPC(8): G02F1/1335G02F1/1343
Inventor 廖炳杰柴立雷兴王茂林熊梅李埈
Owner SHENZHEN CHINA STAR OPTOELECTRONICS TECH CO LTD
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