Handwriting device, method and tft display based on tft display

Abstract

The invention relates to a handwriting device and method based on a TFT display screen and a TFT display screen, wherein the TFT display screen is composed of a Source line and a Gate line, which includes: an x-coordinate detection unit for detecting the position of the stylus sensed by the Source line The strength of the emitted electromagnetic wave, find out the Source line with the strongest induction, and use it as the x-axis positioning coordinate point of the stylus tip on the TFT display; the y-axis coordinate detection unit is used to detect the stylus emitted by the Gate line. The intensity of the electromagnetic wave, find wherein the Gate line with the strongest induction, as the y-axis positioning coordinate point of the stylus nib on the TFT display screen, so as to achieve the function of the stylus on the display screen, the TFT display screen in the present invention The image display is not easy to be distorted, and the display effect is not easily affected by the interference of the external environment, and the cooperation of the existing common TFT display screen and the stylus will not increase the production cost.

Description

technical field [0001] The present invention relates to the technical field of TFT (Thin Film Transistor, Thin Film Field Effect Transistor, thin film transistor for short) display screen, in particular to a handwriting device and method based on a TFT display screen and a TFT display screen. Background technique [0002] The touch screen or tablet enables people to conveniently input terminal information by handwriting. At present, the ways of touch screens and handwriting pads used in the market to realize handwriting input include: resistive, capacitive, infrared, ultrasonic, and electromagnetic, among which: [0003] The touch screen with infrared technology is cheap, but its frame is fragile, easy to generate light interference, and easy to be distorted in the case of a curved surface; [0004] The touch screen design concept of capacitive technology is more reasonable, but its image distortion problem is difficult to be fundamentally solved; [0005] The touch screen...

AI Technical Summary

Problems solved by technology

The characteristic of the electromagnetic tablet is that it has high resolution and is in line with people’s writing habits. However, the cooperation effect of the tablet with computers or other terminals such as mobile phones is not good, and it cannot be used with large-screen display devices; If the plate is made of transparent ITO (Indium-Tin Oxide, indium tin oxide, transparent conductive film glass) pole, it will increase the production cost and processing difficulty

[0008] Therefore, existing touch screens or handwriting pads have defects such as easy distortion of images or being easily affected by the external environment so that they cannot work normally.

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