Pixel circuit, driving method, display module, driving method and display device

A technology for pixel circuits and pixels, applied in the fields of driving methods, pixel circuits, display modules, driving methods and display devices, capable of solving the problems of complex process steps and low precision

Active Publication Date: 2019-04-30
BOE TECH GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The main purpose of the present invention is to provide a pixel circuit, a driving method, a display module, a driving method and a display device, so as to solve the problem of the existing AMOLED (Active-matrix organic light emitting diode) that can realize touch control. The display device adopts an external capacitive touch method, which leads to complex process steps and low precision

Method used

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  • Pixel circuit, driving method, display module, driving method and display device
  • Pixel circuit, driving method, display module, driving method and display device
  • Pixel circuit, driving method, display module, driving method and display device

Examples

Experimental program
Comparison scheme
Effect test

specific Embodiment approach

[0078] According to a specific implementation manner, the photosensitive touch unit may include a photosensitive transistor, a touch capacitor unit and a touch transistor, wherein,

[0079] The gate of the phototransistor is connected to the photoreset control terminal, the first pole of the phototransistor is connected to the first terminal of the touch capacitance unit, and the second pole of the phototransistor is connected to the photoreset signal input terminal connection;

[0080] The second end of the touch capacitor unit is connected to the first level input end;

[0081] The gate of the touch transistor is connected to the first pole of the photosensitive transistor, the first pole of the touch transistor is connected to the first level input end, the second pole of the touch transistor is connected to the The touch sensing current signal output terminal is connected.

[0082] In actual operation, the display compensation stage includes a reset time period and a pho...

Embodiment approach

[0086] According to a specific implementation manner, the pixel driving unit may include a driving transistor, a display capacitor unit, a data writing unit, and a light emission control unit, wherein,

[0087] The first end of the display capacitor unit is connected to the gate of the driving transistor, and the second end of the display capacitor unit is connected to the first electrode of the driving transistor;

[0088] The second pole of the driving transistor is connected to the compensation signal output terminal;

[0089] The data writing unit is respectively connected to the gate of the drive transistor, the corresponding row gate line and the corresponding column data line, and is used to control whether the gate of the drive transistor is connected to the corresponding column data line under the control of the corresponding row gate line. line connection;

[0090] The light emission control unit is respectively connected to the light emission control terminal, the ...

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PUM

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Abstract

The invention provides a pixel circuit, a driving method, a display module, a driving method and a display device. The pixel circuit includes a touch pixel driving sub-circuit; the touch pixel driving sub-circuit includes a pixel driving unit, a control unit and a light-sensitive touch unit; the light-sensitive touch unit outputs the touch sensing current signal; the pixel drive unit is used for Extract the threshold voltage signal of the driving transistor included in it, and output the threshold voltage signal; the control unit controls whether the output terminal of the touch sensing current signal is connected to the touch display signal line under the control of the touch reading control terminal, and the display compensation Under the control of the control terminal, it controls whether the compensation signal output terminal is connected to the touch display signal line. The invention saves process steps and has high touch precision.

Description

technical field [0001] The present invention relates to the field of display technology, in particular to a pixel circuit, a driving method, a display module, a driving method and a display device. Background technique [0002] The existing AMOLED (Active-matrix organic light emitting diode, active-matrix organic light-emitting diode) display devices all use the On Cell (plug-in) capacitive touch method, which requires two independent process steps : One is a capacitive touch substrate process, and the other is an OLED (Organic LightEmitting Diode, active matrix organic light emitting diode) display substrate process. And at the same time, currently, the number of capacitive touch units is not as large as the number of display pixel units, and the function of high-precision fingerprint recognition cannot be realized. Contents of the invention [0003] The main purpose of the present invention is to provide a pixel circuit, a driving method, a display module, a driving met...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G09G3/3225H01L27/32G06F3/041G06F3/042
CPCG06F3/0412G06F3/042G09G3/3225H10K59/40G09G3/3233G09G3/3275G09G2320/045G06F3/0416H10K59/1213H10K59/1216
Inventor 马占洁
Owner BOE TECH GRP CO LTD
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