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Pixel circuit, pixel driving method, and display device

A pixel circuit and circuit technology, applied in the field of circuits, can solve problems such as poor display effect of display devices, achieve the effect of improving display effect and avoiding leakage current

Active Publication Date: 2022-08-05
VIVO MOBILE COMM CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the embodiments of the present application is to provide a pixel circuit, a pixel driving method and a display device, which can solve the technical problem of poor display effect of existing display devices

Method used

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

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Embodiment Construction

[0017] 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 part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the protection scope of the present application.

[0018] The terms "first", "second" and the like in the description and claims of the present application are used to distinguish similar objects, and are not used to describe a specific order or sequence. It is to be understood that data so used may be interchanged under appropriate circumstances so that embodiments of the application can be practiced in sequences other than those illustrated or described herein. In addition, "and / or" in the de...

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Abstract

The present application provides a pixel circuit, a pixel driving method and a display device. The pixel circuit includes a light-emitting element, a first switch tube, a second switch tube and a voltage control circuit; the first switch tube is used to control the connection or disconnection between the first drive node and the second drive node; the second switch tubes connected in series with each other The sum voltage control circuit is arranged between the second driving node and the light emitting element. In the embodiment of the present application, the voltage control circuit is configured to reduce the voltage when the first driving node is connected to the first voltage signal, the second driving node is connected to the light-emitting element, and the first driving node and the second driving node are disconnected. The voltage of the second driving node avoids the leakage current of the first switch tube. In the embodiment of the present application, the voltage of the second driving node in the pixel circuit corresponding to the black state area of ​​the display device is reduced, so as to avoid the leakage current generated by the first switch tube, thereby improving the display effect of the display device.

Description

technical field [0001] The present application belongs to the technical field of circuits, and in particular relates to a pixel circuit, a pixel driving method and a display device. Background technique [0002] Active Matrix / Organic Light Emitting Diode (AMOLED) has the advantages of high definition, high brightness and low energy consumption, and is considered to be a new technology to replace liquid crystal displays. A plurality of light-emitting elements (Organic Light-Emitting Diode, OLED) are configured in the AMOLED display device, and each OLED device corresponds to a pixel circuit. [0003] When the voltage provided by the power supply voltage terminal connected to the cathode of the OLED in the AMOLED display device increases, that is, when the voltage connected to the cathode of the OLED device increases, the transistors in the pixel circuit corresponding to the black state area of ​​the display device may generate leakage current, As a result, the OLED device is...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G09G3/3225G09G3/3258
CPCG09G3/3225G09G3/3258
Inventor 马伟欣
Owner VIVO MOBILE COMM CO LTD