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Pixel circuit and display device

A pixel circuit and capacitor technology, applied in the field of organic light-emitting display, can solve problems such as uneven lighting, eliminate the influence of adverse factors, improve lighting uniformity and display effect, and improve lighting unevenness.

Inactive Publication Date: 2016-04-13
SHANGHAI TIANMA AM OLED +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In actual use, it is found that organic light-emitting diode display devices have uneven light emission

Method used

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Embodiment Construction

[0041] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0042] As mentioned in the background art, in actual use, it is found that organic light-emitting diode display devices have non-uniform light emission. Among them, the pixel circuit of the existing organic light emitting diode display device cannot compensate the threshold voltage of the driving transistor, so that the threshold voltage of the driving transistor affects the driving current, and the driving transistors of different pixel units have different th...

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Abstract

The invention discloses a pixel circuit and a display device. The pixel circuit comprises a first transistor, a second transistor, a third transistor, a fourth transistor, a fifth transistor, a driving transistor, a first capacitor, and a second capacitor. According to the pixel circuit and the display device, the driving current and the driving transistor are finally prevented from being influenced by threshold voltage via cooperative driving of the transistors and the two capacitors, the influence of adverse factors is eliminated, the problem of non-uniform light emission of the display device is effectively improved, and the light-emitting uniformity and the display effect of the display device are improved.

Description

technical field [0001] The present invention relates to the technical field of organic light-emitting display, and more specifically, to a pixel circuit and a display device. Background technique [0002] With the continuous development of multimedia, organic light emitting diode (Organic Light Emitting Diode, OLED) display device has attracted attention in the display device market due to its simple structure and excellent advantages of operating temperature, contrast, and viewing angle. Organic light emitting diode display devices include passive matrix OLED display devices and active matrix OLED display devices, and active matrix OLED display devices are widely used due to low power consumption. In actual use, it is found that the organic light emitting diode display device has a phenomenon of uneven light emission. Contents of the invention [0003] In view of this, the present invention provides a pixel circuit and a display device. By compensating the threshold volt...

Claims

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Application Information

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IPC IPC(8): G09G3/3233
CPCG09G3/3233
Inventor 吴桐钱栋
Owner SHANGHAI TIANMA AM OLED
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