Capacitive in-cell touch-screen panel, touch-positioning method, and display device

  • US 9,436,323 B2
  • Filed: 11/08/2012
  • Issued: 09/06/2016
  • Est. Priority Date: 06/29/2012
  • Status: Active Grant
First Claim
Patent Images

1. A capacitive in-cell touch-screen panel, comprising:

  • a thin film transistor (TFT) array substrate comprising data lines and gate lines; and

    a color-filter substrate provided above the TFT array substrate,at least one of the gate lines is elected as a touch scanning line, and at least one of the data lines is elected as a touch sensing line;

    alternatively, at least one of the data lines is elected as a touch scanning line, and at least one of the gate lines is elected as a touch sensing line;

    wherein,the touch scanning line is used to transmit a touch scan signal;

    the touch sensing line is used to obtain a voltage signal which is formed through coupling with the touch scan signal via an inductive capacitor and output the voltage signal;

    the inductive capacitor is formed at a non-coplanar intersection between the touch scanning line and the touch sensing line, andwherein the color-filter substrate comprises a metallic layer which is conductive on the side facing away the TFT array substrate for shielding an external electric field; and

    the metallic layer is distributed in a region other than the corresponding region of the inductive capacitor.

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