Touch display panel

A touch display panel and touch electrode technology, which is applied in the fields of instruments, computing, electrical and digital data processing, etc., can solve the problems of uneven distribution of via holes and display mura in the touch display panel, achieve good display effect, prevent display mura, the effect of simplifying the process
CN107168582AActive Publication Date: 2017-09-15SHANGHAI TIANMA MICRO ELECTRONICS CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
SHANGHAI TIANMA MICRO ELECTRONICS CO LTD
Publication Date
2017-09-15

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Abstract

The invention provides a touch display panel, comprising a first substrate, a plurality of pixel units arranged on the first substrate, the pixel units being arranged in an array manner, a touch electrode layer arranged on the first substrate, and an insulating layer between the touch electrode layer and a touch signal line layer. The touch electrode layer comprises a plurality of touch electrodes. The touch electrodes are arranged in an array manner and are insulated to each other. The insulating layer is provided with a plurality of via holes. The touch electrode and the touch signal line realize electric connection through the via holes. Value range of density of the via holes is smaller than or equal to 0.1. Definition of density of the via hole is ratio of number of via holes covered by a touch electrode to number of pixel units covered by a touch electrode. Through limiting density of the via hole to be smaller than or equal to 0.1, good display effect can be obtained, preventing display mura generated by visible via holes. Arranging methods of the via holes are not limited in uniform distribution in the prior art, so that process and design requirements of the touch display panel are greatly simplified.
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Description

technical field

[0001] The present invention relates to the field of display, in particular to a touch display panel. Background technique

[0002] As an input medium, the touch screen is the most simple, convenient and natural way of human-computer interaction. Integrating touch functions on display devices has become a research and development hotspot for more and more flat panel display manufacturers.

[0003] Capacitive touch is a touch technology that is widely used at present. In order to reduce the thickness of the display panel and realize the touch function, the touch structure is usually integrated in the display panel, and a plurality of touch electrodes are formed in the display area. The control electrodes can be multiplexed with the common electrodes of the display pixels and driven in time division. The common electrodes receive common signals in the display stage, and the common electrodes receive touch signals in the touch stage. In the prior art, the sign...

Claims

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