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Pixel circuit, driving method thereof, display panel and display device

A pixel circuit and circuit technology, applied in static indicators, instruments, etc., can solve the problems of not ensuring good TFT uniformity and uneven pixel brightness.

Active Publication Date: 2019-06-04
BOE TECH GRP CO LTD +1
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] For example, in the pixel driving circuit of an AMOLED (Active Matrix Organic Light Emitting Diode) display device, due to the ELA (Excimer Laser Annealing, excimer laser annealing) and doping (Doping) processes cannot guarantee the good uniformity of TFT, so there is a phenomenon of threshold voltage Vth deviation of the drive transistor
For example, for the basic 2T1C (two thin-film transistors and one capacitor) pixel circuit in an AMOLED display, when the same data (Data) signal is written, due to the different Vth in the current formula of the light-emitting element, each pixel (pixel) ) uneven brightness

Method used

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  • Pixel circuit, driving method thereof, display panel and display device
  • Pixel circuit, driving method thereof, display panel and display device
  • Pixel circuit, driving method thereof, display panel and display device

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Embodiment Construction

[0050] In order to make the objectives, technical solutions, and advantages of the embodiments of the present disclosure clearer, the technical solutions in the embodiments of the present disclosure will be described clearly and completely in conjunction with the accompanying drawings in the embodiments of the present disclosure. Obviously, the described embodiments are part of the embodiments of the present disclosure, but not all of them. Based on the described embodiments of the present disclosure, all other embodiments obtained by those of ordinary skill in the art without creative labor are within the protection scope of the present disclosure. It should be noted that throughout the drawings, the same elements are represented by the same or similar reference signs. In the following description, some specific embodiments are only used for descriptive purposes, and should not be construed as limiting the present disclosure, but are merely examples of the embodiments of the p...

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Abstract

The embodiment of the invention discloses a pixel circuit and a driving method thereof, a display panel and a display device. The pixel circuit includes: a driving sub-circuit configured to provide acurrent for causing a light emitting element to emit light to the light emitting element under the control of a light emitting control signal; a reset sub-circuit which is provided with a reset signalend for receiving a reset signal, is connected to the driving sub-circuit and is configured to reset the driving sub-circuit under the control of the reset signal, and the data write-in sub-circuit is connected to the driving sub-circuit and is used for writing data voltage into the driving sub-circuit under the control of a first control signal; a sensing sub-circuit which is configured to receive the data signal through the first signal end and transmit the data signal to the data writing sub-circuit under the control of the second control signal and sense an external input to read the sensed external input to the reading signal line under the control of the reading control signal.

Description

Technical field [0001] The present disclosure relates to the display field, and in particular to a pixel circuit and a driving method thereof, a display panel and a display device. Background technique [0002] For example, in the pixel driving circuit of AMOLED (Active Matrix Organic Light Emitting Diode) display devices, the ELA (Excimer) used in the actual production of the TFT (Thin Film Transistor) used in the AMOLED display Laser Annealing (excimer laser annealing) and doping (Doping) processes cannot guarantee good uniformity of the TFT, so there is a phenomenon of deviation of the threshold voltage Vth of the driving transistor. For example, for the basic 2T1C (two thin film transistors and one capacitor) pixel circuit in an AMOLED display screen, when the same data (Data) signal is written, the current formula of the light-emitting element has a different Vth, which causes each pixel (pixel ) Uneven brightness. In addition, it is hoped that biometric functions such as ...

Claims

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Application Information

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IPC IPC(8): G09G3/3225
CPCG09G2300/0819G09G2300/0861G09G2300/0842G09G2320/0238G09G3/3233G09G2354/00G09G3/3266G09G3/3291G09G2310/0278
Inventor 徐映嵩
Owner BOE TECH GRP CO LTD
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