In Cell touch control display panel

Abstract

The invention provides an In Cell touch control display panel. With respect to the In Cell touch control display panel, only a first flat layer (14) is arranged between a pixel electrode (15) and a source / drain electrode (45) which are arranged at one side of a TFT substrate (1), and the pixel electrode (15) is contacted with the source / drain electrode (45) through a second via hole (141) in the first flat layer (14). Compared with the prior art, the In Cell touch control display panel is advantaged in that the thickness of two passivation layers between the pixel electrode (15) and the source / drain electrode (45) is reduced, harmful effect generated by that a via hole of a first passivation layer (16) and the first flat layer (14), and a via hole of a second passivation layer (18) and the first flat layer (14) are mutually overlapped is avoided, and the pixel aperture ratio is greatly increased; at the same time, the number of the via holes is low, the structure is simple, and therefore the difficulty level of the manufacture procedure is reduced, and the product yield is risen.

Description

technical field [0001] The present invention relates to the field of display technology, in particular to an InCell touch display panel. Background technique [0002] With the rapid development of display technology, touch display panels have been widely accepted and used by people, for example, smart phones, tablet computers, etc. all use touch display panels. The touch display panel adopts embedded touch technology to integrate the touch panel and the liquid crystal display panel, and embeds the function of the touch panel into the liquid crystal display panel, so that the liquid crystal display panel has the functions of displaying and sensing touch input at the same time. According to different structures, the touch display panel can be divided into a type in which the touch electrodes cover the liquid crystal cell (OnCell), a type in which the touch electrodes are embedded in the liquid crystal cell (InCell), and an external type. Among them, the InCell type has the ad...

AI Technical Summary

Problems solved by technology

[0009] In order to connect the pixel electrode 190 with the source / drain 450, before depositing the pixel electrode 190, three steps are performed on the first flat layer 140, the first passivation layer 160, and the second passivation layer 180 in sequence. The hole-digging process makes it necessary to consider the change of line width (CD) between the holes of each layer and the influence of overlap (overlay) in the design, thus limiting the increase of the aperture ratio, and the hole-digging process is very difficult in the process. The most complex, which greatly increases the difficulty of production and affects product yield

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