Method, Device, and System for Detecting Transmitter Approaching or Touching Touch Sensitive Display

摘要

A method is provided for detecting a transmitter approaching or touching a touch sensitive display. The transmitter transmits an electrical signal which is mixed from a plurality of signals having different frequencies. The display includes a liquid crystal layer between pixel electrodes and common electrodes and a plurality of second electrodes. The common electrodes include a plurality of first electrodes. A plurality of sensing points is located in the intersections of the plurality of first electrodes and the plurality of second electrodes. The method includes: calculating the total signal strength of a received signal with respect to each of the first electrodes; calculating the total signal strength of a received signal with respect to each of the second electrodes; calculating a relative position between the transmitter and the display according to the calculated total signal strengths of the received signals with respect to each of the first and second electrodes.

主权项

1. A method for detecting a transmitter approaching or touching a touch sensitive display, the transmitter transmitting an electrical signal mixed from a plurality of frequencies, the touch sensitive display including a liquid crystal layer disposed between pixel electrodes and common electrodes and a plurality of second electrodes, wherein the common electrodes include a plurality of first electrodes and a plurality of sensing points are formed at intersections of the first and second electrodes; the method including the following steps of:
calculating the total signal strength of a received signal with respect to each of the first electrodes; calculating the total signal strength of a received signal with respect to each of the second electrodes; and calculating a relative position between the transmitter and the touch sensitive display according to the calculated total signal strengths of the received signals with respect to each of the first electrodes and the second electrodes.