Capacitance-type built-in touch screen and display device

Abstract

The invention discloses a capacitance-type built-in touch screen and a display device. A touch sensing electrode is arranged on a colorful film substrate; a whole-surface connection public electrode layer in a TFT (thin film transistor) array substrate is divided into strips to be used as touch driving electrodes; and metal driving electrodes directly and electrically connected with each corresponding touch driving electrode are arranged so as to lower the resistance value of the touch driving electrodes. Because the touch screen provided by the embodiment of the invention is characterized in that the public electrode layer structure of the TFT array substrate is changed to form the touch driving electrodes, no additional technologies need to be added on the basis of the traditional TFT array substrate preparation technology, the production cost is saved, and the production efficiency is improved. In addition, because the functions of time-sharing touch and display are adopted, a display driving chip and a touch driving chip can be integrated into a whole to further lower the production cost, the mutual interference between display and touch can be lowered by time-sharing driving, and the picture quality and the touch accuracy can be improved.

Description

technical field [0001] The invention relates to the field of display technology, in particular to a capacitive embedded touch screen and a display device. Background technique [0002] With the rapid development of display technology, touch screen panels (Touch Screen Panels) have gradually spread throughout people's lives. At present, touch screens can be divided into three types according to their structure: Add on Mode Touch Panel, On Cell Touch Panel, and In Cell Touch Panel. Among them, the plug-in touch screen is produced separately from the touch screen and Liquid Crystal Display (LCD), and then bonded together to form a touch-enabled LCD screen. The plug-in touch screen has high production costs and low light transmittance. Low, thick modules and other shortcomings. The embedded touch screen embeds the touch electrodes of the touch screen inside the liquid crystal display, which can reduce the overall thickness of the module and greatly reduce the production cost o...

AI Technical Summary

Problems solved by technology

[0004] The structural design of the above-mentioned capacitive embedded touch screen needs to add a new film layer on the existing TFT array substrate, which makes the structure of the TFT array substrate relatively complicated, and also needs to add a new process when manufacturing the TFT array substrate, which reduces the production cost. increase; and the structural design of the above-mentioned capacitive embedded touch screen needs to use two driver chips (IC) to realize touch driving and display driving respectively, and the cost is also high

Images