Capacitive screen, capacitive screen and touch pen interaction method and storage medium

Abstract

The embodiment of the invention relates to the technical field of microelectronics, and discloses a capacitive screen, an interaction method of the capacitive screen and a touch pen and a storage medium. The capacitive screen comprises a touch control chip and a screen body coil, the touch chip is used for generating a first current signal; the screen body coil is a metal coil integrated on the capacitive screen and is used for generating a first electromagnetic signal according to the current signal and sending the first electromagnetic signal to the touch pen, so that the touch pen sends a second electromagnetic signal to the screen body coil after receiving the first electromagnetic signal; the screen body coil is further used for receiving the second electromagnetic signal and converting the second electromagnetic signal into a second current signal sent to the touch control chip; the touch control chip is further used for obtaining the actual distance between the capacitive screen and the touch control pen based on the magnitude of the second current signal. According to the embodiment of the invention, the distance between the capacitive screen and the touch pen can be monitored in real time while low cost and low power consumption are ensured, so that communication interaction between the capacitive screen and the touch pen is started in time.

Description

technical field [0001] Embodiments of the present invention relate to the technical field of microelectronics, and in particular, to a capacitive screen, an interaction method between a capacitive screen and a touch pen, and a storage medium. Background technique [0002] For most capacitive screens that support stylus, in order to monitor the distance between the capacitive screen and the stylus, so as to timely start the communication interaction between the capacitive screen and the stylus, it is necessary to perform high-voltage coding on the capacitive screen, or even It is ultra-high voltage coding; another way is to add an electromagnetic screen and use the electromagnetic screen to send signals to monitor the distance between the capacitive screen and the stylus. [0003] However, the hardware cost of the electromagnetic screen is relatively high. In addition, high-voltage coding also has the following defects: [0004] (1) High-voltage coding will lead to increased...

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Problems solved by technology

[0003] However, the hardware cost of the electromagnetic screen is relatively high. In addition, high-voltage coding also has the following defects:

[0004] (1) High-voltage coding will lead to increased power consumption;

[0005] (2) High-voltage coding requires a special process to support high-voltage output, and the cost is high;

[0006] (3) High-voltage coding will interfere with the display of the screen, making it impossible to accurately monitor the distance between the capacitive screen and the stylus

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