Touch screen, active pen, active pen touch-control system and relevant driving method

Abstract

The invention discloses a touch screen, an active pen, an active pen touch-control system and a relevant driving method. The touch screen comprises touch-control electrodes, auxiliary electrodes and a driving chip, wherein the auxiliary electrodes and the driving chip are positioned among the touch-control electrodes; and the driving chip detects capacitance value changes of the touch-control electrodes according to a touch-control driving signal received by the touch-control electrodes at a touch-control stage of the active pen to judge a touch-control position, and decodes an encoding signal received by the auxiliary electrodes to determine a pressure magnitude. The active pen comprises an active pen body, a pressure sensor for detecting the pressure magnitude and generating an encoding signal, an encoding signal transmission unit for transmitting the encoding signal through a pen hoop of the body, a coordinate driving transmission unit for transmitting a touch-control driving signal through a pen point of the body, and a phase-locking synchronizing unit for controlling the coordinate driving transmission unit and the encoding signal transmission unit to transmit signals simultaneously. The encoding signal and the touch-control driving signal are transmitted and received simultaneously, so that the time of a touch-control stage of the active pen can be shortened.

Description

technical field [0001] The invention relates to the field of display technology, in particular to a touch screen, an active pen, an active pen touch system and a related driving method. Background technique [0002] With the development of touch technology, more and more mobile terminals use touch to perform human-computer interaction. In addition to touch operation with fingers, the touch screen can also be operated with a touch pen. [0003] Touch pens include passive pens and active pens. Among them, the function of the passive stylus is equivalent to that of a human finger. When the passive stylus touches the touch screen, a small part of the current flows from the touch point into the passive stylus, which is equivalent to the change of the electrode capacitance at the touch point. The control chip of the screen can determine the position of the touch point by detecting the change of the electrode capacitance. The nib of the passive pen is usually designed to be larg...

AI Technical Summary

Problems solved by technology

[0005] The embodiment of the present invention provides a touch screen, an active pen, an active pen touch system and a related driving method to solve the problem in the prior art that the active pen touch stage takes a long time

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