In-cell touch screen panel, driving method thereof, and display device

  • US 9,910,537 B2
  • Filed: 09/29/2015
  • Issued: 03/06/2018
  • Est. Priority Date: 06/23/2015
  • Status: Active Grant
First Claim
Patent Images

1. An in-cell touch screen panel, comprising:

  • an array substrate;

    a plurality of sub-pixels located on the array substrate, each of the plurality of sub-pixels comprising an organic light-emitting device and a sub-pixel circuit electrically connected with the organic light-emitting device, the organic light-emitting device comprising an anode layer, a light-emitting layer and a cathode layer that are located on the array substrate in turn; and

    a driving chip;

    wherein the plurality of sub-pixels are grouped into sub-pixel groups each comprising at least two sub-pixels, wherein the cathode layers of different sub-pixel groups are independent of one another; and

    wherein the driving chip is configured to output signals to signal terminals of each sub-pixel circuit and to the cathode layer of each sub-pixel group, wherein each of the signals output in a touch scanning phase is a superposition of the signal output in a preceding phase with a touch scanning signal such that each sub-pixel circuit operates in the touch scanning phase in the same state as in the preceding phase,wherein the sub-pixel circuit comprises a data write module, a reset module, a light-emitting control module, a driving control module, a compensating module, a data signal terminal, a write control signal terminal, a reset signal terminal, a reset control signal terminal, a light-emitting control signal terminal, and a reference signal terminal, wherein;

    the driving control module has a control terminal, an input terminal, and an output terminal;

    the data write module has an input terminal connected with the data signal terminal, a control terminal connected with the write control signal terminal, and an output terminal connected with the input terminal of the driving control module;

    the reset module has an input terminal connected with the reset signal terminal, a control terminal connected with the reset control signal terminal, and an output terminal connected with the control terminal of the driving control module;

    the compensating module has a first input terminal connected with the reference signal terminal, a second input terminal connected with the output terminal of the driving control module, a control terminal connected with the write control signal terminal, and an output terminal connected with the control terminal of the driving control module; and

    the light-emitting control module has a first input terminal connected with the reference signal terminal, a second input terminal connected with the output terminal of the driving control module, a control terminal connected with the light-emitting control signal terminal, a first output terminal connected with the input terminal of the driving control module, and a second output terminal connected with the anode layer of a corresponding organic light-emitting device; and

    wherein the cathode layer of each of the sub-pixel groups is connected with the driving chip via a respective wire.

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