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Pixel drive circuit and OLED display panel

A technology of pixel driving circuit and driving module, applied in static indicators, instruments, etc., can solve the problem of uneven brightness of the picture, and achieve the effect of uniform display brightness

Active Publication Date: 2022-07-12
SHENZHEN CHINA STAR OPTOELECTRONICS SEMICON DISPLAY TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] The embodiment of the present application provides a pixel driving circuit and an OLED display panel to alleviate the technical problem of uneven brightness of the picture in the existing OLED display panel

Method used

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  • Pixel drive circuit and OLED display panel
  • Pixel drive circuit and OLED display panel
  • Pixel drive circuit and OLED display panel

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Embodiment Construction

[0041] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, but not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without creative efforts shall fall within the protection scope of this application.

[0042] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", " rear, left, right, vertical, horizontal, top, bottom, inside, outside, clockwise, counterclockwise, etc., or The positional relationship is based on the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the ...

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Abstract

The present application provides a pixel driving circuit and an OLED display panel. The pixel driving circuit includes a data signal input module, a light-emitting device, a driving module, a detection module and a storage module; the data signal input module is used for inputting a data signal to a first point; The anode of the device is connected to the first power supply signal; the first input end of the driving module is connected to the data signal input module through the first point, the second input end is connected to the second power supply signal, and the output end is connected to the cathode of the light-emitting device, for The light-emitting device is driven to emit light; the detection module is connected to the driving module through the second point for detecting the threshold voltage of the driving module; the storage module is connected to the driving module through the first point and the second point for storing the threshold voltage of the driving module ; In the light-emitting stage, in the pixel driving circuits corresponding to different pixels, the current values ​​of the output terminals of the driving modules are all within the preset range. The cathode current of each light-emitting device in the present application is less affected by the voltage drop of the power supply, and the display brightness is uniform.

Description

technical field [0001] The present application relates to the field of display technology, and in particular, to a pixel driving circuit and an OLED display panel. Background technique [0002] like figure 1 As shown, it is an existing 3T1C pixel driving circuit, including a data signal input module 101, a light-emitting device 102, a driving module 103, a detection module 104 and a storage module 105, wherein the data signal input module 101 is used in the data writing stage , under the control of the first control signal WR, a data signal is input to the first point g, the cathode of the light-emitting device 102 is connected to the second power supply signal VSS, and the first input terminal of the driving module 103 is input to the data signal through the first point g The module 101 is connected, the second input terminal of the driving module 103 is connected to the anode of the light emitting device 102 through the second point s, the output terminal of the driving m...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G09G3/3208
CPCG09G3/3208G09G2320/0233
Inventor 杨波梁鹏飞
Owner SHENZHEN CHINA STAR OPTOELECTRONICS SEMICON DISPLAY TECH CO LTD
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