Capacitive pen, capacitive touch panel and touch device

Abstract

The invention provides a capacitance pen used for carrying out the operation on a capacitance touch panel (200). The capacitance pen comprises a receiving unit (1), a control processing unit (6) and a sending unit (2). The receiving unit (1) is used for receiving an order signal sent by the capacitance touch panel (200). The control processing unit (6) is used for generating a high-voltage signal according to the order signal received by the receiving unit (1). The sending unit (2) is used for sending the high-voltage signal to the capacitance touch panel (200) to enable the capacitance touch panel (200) to obtain the touch information of the capacitance pen (100). According to the capacitance pen, the touch capacitance panel can still precisely determine the position information of the capacitance pen when the pen point is sharp, the capacitance pen has the pressure character, and the writing fluency and using experience of the capacitance pen are greatly improved.

Description

technical field [0001] The invention relates to capacitive touch technology, in particular to a capacitive pen, a capacitive touch panel and a touch device. Background technique [0002] At present, because the capacitive touch screen is easy to operate and has high sensitivity, it has become the first choice for touch devices at this stage. Capacitive touch screens used in capacitive touch screens are generally made of transparent conductive ITO (indium tin oxide) films in glass or other transparent materials to form a criss-cross structure of conductive films, which can be used as sending electrodes and receiving electrodes. When a finger taps the screen, it will form a coupling capacitance with both the sending electrode and the receiving electrode, and absorb part of the current from the contact point, thereby causing the signal of the receiving electrode to change. That is, when the conductor touches the capacitive touch screen, the touch position of the conductor on t...

AI Technical Summary

Problems solved by technology

[0003] However, if a capacitive touch screen is operated with a thin pen tip made of conductive material, although the pen tip will also absorb part of the current from the contact point, because the pen tip is very thin, the absorption current has little effect on the receiving electrode and is difficult to detect, making the capacitive touch screen impossible. determine touch position

In order to have a greater impact on the receiving electrode, the tip of the capacitive pen must be very thick in addition to its conductive properties, which makes the pen have problems such as poor writing fluency, difficulty in precise clicking, and no pressure-sensitive characteristics, so it cannot achieve the purpose of writing and drawing. Effect

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