Array substrate and manufacturing method thereof, touch display panel and touch display device

Abstract

The invention discloses an array substrate and a manufacturing method thereof, a touch display panel and a touch display device, and relates to the technical field of touch display. The array substrate and the manufacturing method thereof, the touch display panel and the touch display device are used for avoiding the situation that a sputtering cavity is contaminated when a metal touch electrode is formed on an organic material while lowering the power dissipation when the touch display panel works. The array substrate comprises thin film transistors formed on a substrate body, insulating planarization layers, pixel electrodes, touch electrodes and public electrodes, wherein the insulating planarization layers are located on the thin film transistors, and are provide with via holes which are exposed out of the thin film transistors, and the pixel electrodes are located at the sides, back to the thin film transistors, of the insulating planarization layers, and are connected with drainelectrodes of the thin film transistors through the via holes in the insulating planarization layers; the touch electrodes are located at the sides, back to the insulating planarization layers, of thetouch electrodes; the public electrodes are located at the sides, back to the pixel electrodes, of the touch electrodes, and are connected with the corresponding touch electrodes.

Description

technical field [0001] The present invention relates to the technical field of touch display, in particular to an array substrate and a manufacturing method thereof, a touch display panel, and a touch display device. Background technique [0002] A touch display device is a device that can realize both display and touch control. At present, a touch display device usually includes a touch display panel, and a touch display panel usually includes a display panel and a touch panel. According to the touch panel and The relative positional relationship of the display panel can be divided into a built-in touch display panel and an out-cell touch display panel (Out-cell). Touch display panel (In-cell, also known as in-cell touch display panel) and built-in surface touch display panel (On-cell), because the built-in in-surface touch display panel (In-cell) is convenient Manufacture of light and thin products has been extensively researched and applied. [0003] An existing built-i...

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Problems solved by technology

[0004] However, in the above-mentioned array substrate, the pixel electrode is located on the side of the common electrode facing away from the thin film transistor. When the touch display panel provided with the above-mentioned array substrate is in operation, in the display stage, there It is easy to form a large capacitance. Therefore, in order to achieve a good display of the touch display panel, it is usually necessary to increase the size of the common voltage signal provided for the common electrode, resulting in an increase in power consumption of the touch display panel; at the same time, the above array In the substrate, the touch electrodes are formed on the insulating planarization layer. At present, the material of the touch electrode is usually metal, and the touch electrode is usually formed by a sputtering process. The material of the insulating planarization layer is usually an organic material, so sputtering is used. When the touch electrode is formed by the sputtering process, it is easy to cause the insulating planarization layer to decompose in the sputtering chamber with a higher temperature, resulting in pollution of the sputtering chamber

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