Touch display panel, preparation method thereof and touch display device

Abstract

The invention discloses a touch display panel, a preparation method thereof and a touch display device, the touch display panel comprises a touch display area and a peripheral area, the touch displayarea comprises a through hole, a through hole detection area surrounding the through hole and a transition connection area located between the through hole detection area and the peripheral area, andthe through hole detection area comprises an annular crack detection line and an annular isolation line; wherein the transition connection area comprises a transition crack detection line and a transition isolation line, the peripheral area comprises an edge crack detection line and an edge isolation line, the annular crack detection line is electrically connected with the edge crack detection line through the transition crack detection line, and the annular isolation line is electrically connected with the edge isolation line through the transition isolation line; the edge isolation lines arepositioned between the touch electrodes and the edge crack detection lines; the transition isolation line is positioned between the transition crack detection line and the touch electrode; and the annular crack detection line is located on the inner side of the annular isolation line. According to the touch display panel, the touch noise is effectively reduced, and the touch performance of the whole touch display panel is improved.

Description

technical field [0001] The present application relates to but not limited to the field of display technology, and in particular relates to a touch display panel, a manufacturing method thereof, and a touch display device. Background technique [0002] With the rapid development of display technology, touch technology has been applied to various electronic devices and various fields, and is more and more sought after by users. According to the working principle, the touch screen can be divided into: capacitive, resistive, infrared, surface acoustic wave, electromagnetic, vibration induction and frustrated total internal reflection optical induction, etc. Among them, the capacitive touch screen is widely used in various electronic interactive scene devices due to its unique touch principle, high sensitivity, long life, high light transmittance and other advantages. [0003] In order to achieve a larger screen-to-body ratio, some display panels use in-screen hole-digging techn...

AI Technical Summary

Problems solved by technology

For the display panel with integrated touch function, since the position of the hole is designed with a crack detection (Pannel Crack Detection, PCD) line for detecting whether the edge of the hole is cracked (Crack) caused by hole cutting, however, the crack detection line will be related to the touch screen. The electrodes generate coupling, which brings noise to the normal touch signal, and finally leads to the phenomenon of "disorderly report point" and "disorderly operation" at the hole position, which reduces the touch performance

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