A pixel circuit and its driving method, display substrate and display device
A technology of a pixel circuit and a driving method, applied in the display field, can solve problems such as insufficient compensation accuracy, and achieve the effects of improving the compensation accuracy and avoiding abnormal charging voltage
Active Publication Date: 2022-06-07
HEFEI BOE ZHUOYIN TECH CO LTD +1
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Problems solved by technology
[0005] In view of the shortcomings of the existing methods, the present application proposes a pixel circuit and its driving method, a display substrate and a display device to solve the technical problem of insufficient compensation accuracy caused by the introduction of an external compensation circuit in the prior art
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[0057] The application is described in detail below, and examples of embodiments of the application are illustrated in the accompanying drawings, wherein the same or similar reference numerals refer to the same or similar components or components having the same or similar functions throughout. Also, detailed descriptions of known technologies are omitted if they are not necessary for illustrating features of the present application. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present application, but not to be construed as a limitation on the present application.
[0058] It will be understood by those skilled in the art that, unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. It should also be understood that terms, such as those defined in a g...
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Embodiments of the present application provide a pixel circuit, a driving method thereof, a display substrate, and a display device. The pixel circuit includes: a data writing module, a driving module, a storage module and a detection module; the data writing module is used to provide the data voltage of the data signal terminal to the first node under the control of the first scanning signal terminal; the storage module is used for Keep the voltage difference between the first node and the second node stable; the detection module is connected to the storage module, the drive module, the second node, the second scanning signal terminal and the sensing signal line respectively, and is used for controlling the second scanning signal terminal Next, the reference voltage output by the reference signal terminal is received through the induction signal line, and the reference voltage is provided to the second node; and the charging voltage charged by the second node is transmitted to the induction signal line, and the current on the induction signal line is prevented from flowing to second node. The embodiment of the present application can avoid the problem of abnormal charging voltage on the sensing signal line, and further can improve compensation accuracy.
Description
technical field [0001] The present application relates to the field of display technology, and in particular, the present application relates to a pixel circuit and a driving method thereof, a display substrate and a display device. Background technique [0002] An organic light-emitting diode (Organic Light Emitting Diode, OLED) display device is a display device that uses an organic light-emitting material to emit light by carrier injection and recombination under the drive of an electric field. The advantages of response speed and other advantages are recognized by the industry as the display device with the most development potential. [0003] In the OLED display, each pixel unit includes a pixel circuit, which can provide a driving current to the light-emitting unit to drive the light-emitting unit to emit light. Due to the long-term operation of the pixel circuit, the driving transistor included in the pixel circuit is subjected to severe voltage stress. Threshold vol...
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IPC IPC(8): G09G3/3225G09G3/00
CPCG09G3/3225G09G3/006
Inventor 冯雪欢李永谦
Owner HEFEI BOE ZHUOYIN TECH CO LTD