Fringe-field switching mode thin film transistor array substrate and manufacturing method thereof

Abstract

The invention discloses a fringe-field switching mode thin film transistor array substrate and a manufacturing method thereof. The array substrate comprises a first insulating layer formed on a transparent substrate, a second insulating layer formed on the first insulating layer, a first electrode layer formed on the second insulating layer, a third insulating layer formed on the first electrode layer and a second electrode layer formed on the third insulating layer, wherein the second insulating layer comprises multiple insulating protrusive portions arranged at intervals; the multiple insulating protrusive portions protrude out of the surface of the first insulating layer; the first electrode layer comprises multiple electrode flat portions and multiple electrode convex portions; the multiple electrode flat portions cover the surface, not provided with the insulating protrusive portions, of the first insulating layer; the multiple electrode convex portions cover the multiple insulating protrusion portions respectively; the upper surfaces of the electrode convex portions are not covered with the third insulating layer and exposed; the second electrode layer comprises multiple electrode portions arranged at intervals; the multiple electrode portions are located above the multiple electrode flat portions respectively; the electrode portions and the electrode convex portions are arranged in a staggered and alternate mode.

Description

technical field [0001] The invention relates to the field of display technology, in particular to a fringe field switching mode thin film transistor array substrate and a manufacturing method thereof. Background technique [0002] Liquid Crystal Display (LCD) has the advantages of good picture quality, small size, light weight, low driving voltage, low power consumption, no radiation and relatively low manufacturing cost, and it occupies a dominant position in the field of flat panel display. With the development of technology, people's demand for liquid crystal displays with high transmittance, high contrast, wide viewing angle and low power consumption continues to increase. The traditional twisted nematic mode (Twisted Nematic, TN) liquid crystal display panel has the problem of narrow viewing angle. In order to realize liquid crystal display with a wide viewing angle, the liquid crystal display panel of the in-plane switching mode (In-Plane Switching, IPS) using the tran...

AI Technical Summary

Problems solved by technology

When there is a DC bias, the ionic impurities remaining on the alignment layer are mixed into the liquid crystal molecules because they cannot be released in time, forming ion residues and causing afterimages

That is to say, due to the existence of DC bias, the ionic impurities accumulated in the liquid crystal molecules cannot be quickly released through the alignment layer, which may easily cause the ionic impurities to remain in the liquid crystal molecules, resulting in afterimage problems

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