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Compensation circuit and display for oled drive circuit

A compensation circuit and driving circuit technology, applied in the field of compensation circuits, can solve the problems of traces, uneven brightness of the display, affecting the quality of light emission, etc.

Active Publication Date: 2021-05-11
GUANGDONG OPPO MOBILE TELECOMM CORP LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, the compensation circuit for driving OLED is 7T1C circuit. The main purpose of this compensation circuit is to compensate the uneven threshold voltage Vth of driving thin film transistors (TFT, Thin Film Transistors) due to manufacturing process, and the uneven threshold voltage Vth will cause display Uneven brightness will eventually cause various trace phenomena, and the threshold voltage Vth drift will affect the current of the OLED light-emitting device, thereby affecting the quality of light emission; it can be seen from this that the compensation effect of the compensation circuit of the existing OLED drive circuit is not good.

Method used

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  • Compensation circuit and display for oled drive circuit
  • Compensation circuit and display for oled drive circuit
  • Compensation circuit and display for oled drive circuit

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Embodiment Construction

[0028] The technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application.

[0029] An embodiment of the present application provides a compensation circuit for an OLED drive circuit, figure 1 For a schematic structural diagram of an optional compensation circuit for an OLED driving circuit provided in an embodiment of the present application, refer to figure 1 As shown, the compensation circuit includes: a first switching tube 11, a second switching tube 12, a third switching tube 13, a fourth switching tube 14, a fifth switching tube 15, a sixth switching tube 16, a storage capacitor 17, and a drive transistor 18 and control circuit 19; wherein,

[0030] The control terminal 181 of the driving transistor 18 is respectively connected to one terminal 191 of the control circuit 19, the first terminal 122 of the second switching tube 12 and the second...

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Abstract

The embodiment of the present application discloses a compensation circuit for an OLED drive circuit, including: a first switch tube, a second switch tube, a third switch tube, a fourth switch tube, a fifth switch tube, a sixth switch tube, a storage capacitor, The drive transistor and the control circuit, wherein one end of the control circuit is connected to the control end of the drive transistor, and the other end of the control circuit is connected to the other end of the storage capacitor, for: when the second switch tube, the fifth switch tube and the sixth switch tube are closed , when the first switch tube, the third switch tube and the fourth switch tube are turned on, the branch where the storage capacitor is located is controlled to be disconnected to compensate the threshold voltage of the drive transistor, and when the fifth switch tube and the sixth switch tube are turned on, the second switch tube is turned on. When the first switch tube, the second switch tube, the third switch tube and the fourth switch tube are turned off, the branch where the storage capacitor is located is turned on, so that the OLED displays light. The embodiment of the present application also provides a display at the same time.

Description

technical field [0001] The present application relates to a technology for driving a compensation circuit of an organic light-emitting diode (OLED, Organic Light-Emitting Diode), in particular to a compensation circuit for an OLED driving circuit and a display. Background technique [0002] At present, the compensation circuit for driving OLED is 7T1C circuit. The main purpose of this compensation circuit is to compensate the uneven threshold voltage Vth of driving thin film transistors (TFT, Thin Film Transistors) due to manufacturing process, and the uneven threshold voltage Vth will cause display The uneven brightness will eventually cause various traces, and the threshold voltage Vth drift will affect the current of the OLED light-emitting device, thereby affecting the quality of light emission; it can be seen that the compensation effect of the compensation circuit of the existing OLED driving circuit is not good. Contents of the invention [0003] Embodiments of the ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G09G3/3208
CPCG09G3/3208
Inventor 聂诚磊
Owner GUANGDONG OPPO MOBILE TELECOMM CORP LTD