Liquid crystal display panel and manufacturing method thereof

Abstract

The invention provides a liquid crystal display panel and a manufacturing method thereof. In the liquid crystal display panel, a COA (Color Filter on Array) and POA (PS on Array) design is adopted, so that the problem of formation of Mura due to a non-uniform box thickness since post spacers tend to fall into through holes on an TFT (Thin Film Transistor) array substrate in a panel bending process is solved. A black matrix of an upper substrate is arranged on an ITO (Indium Tin Oxide) electrode layer, so that a manufacturing method is simple, AOI (Automatic Optic Inspection) equipment and repairing equipment are omitted, and the production cost is low. The manufacturing method of the liquid crystal display panel comprises the following steps: forming the ITO electrode layer of the upper substrate, and forming the black matrix on the ITO electrode layer; performing AOI and repairing processes by using the AOI equipment and the repairing equipment on a yellow line where the black matrix is positioned. The AOI equipment and the repairing equipment under a production line at which the ITO electrode layer is positioned are omitted, the AOI and repairing processes only need to be performed once, the process flow of the upper substrate is simplified, the equipment space is saved, and the purchasing cost is reduced.

Description

technical field [0001] The invention relates to the field of display technology, in particular to a liquid crystal display panel and a manufacturing method thereof. Background technique [0002] Active thin film transistor liquid crystal display (ThinFilmTransistor-LCD, TFT-LCD) has been developed rapidly and widely used in recent years. Most of the liquid crystal display devices currently on the market are backlight liquid crystal display devices, which include a liquid crystal display panel and a backlight module. Usually, the liquid crystal display panel is composed of a color filter (ColorFilter, CF) substrate, a thin film transistor (ThinFilmTransistor, TFT) array substrate, a liquid crystal (LiquidCrystal, LC) sandwiched between the color filter substrate and the TFT array substrate, and a sealant (Sealant). ; Its working principle is to control the rotation of the liquid crystal molecules in the liquid crystal layer by applying a driving voltage on the two glass subs...

AI Technical Summary

Problems solved by technology

[0003] In the development process of TFT-LCD, large size, high resolution and curved surface are the technological development trend, but with the current design, the PS is designed on the color filter substrate, and the PS is easy to fall into the TFT array substrate during the bending process of the curved liquid crystal panel. At the through hole (Viahole) on the top, the thickness of the box is uneven, resulting in uneven brightness (Mura)

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