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Pixel circuit, driving method thereof, display panel, display device

A technology of a pixel circuit and a driving method, applied in the display field, can solve the problems of uneven luminous brightness and the like

Active Publication Date: 2020-04-03
KUNSHAN GO VISIONOX OPTO ELECTRONICS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Based on this, it is necessary to provide a pixel circuit and its driving method, a display panel, and a display device for the problem of uneven luminous brightness caused by different threshold voltages of the driving transistors on the display panel.

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  • Pixel circuit, driving method thereof, display panel, display device
  • Pixel circuit, driving method thereof, display panel, display device
  • Pixel circuit, driving method thereof, display panel, display device

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Embodiment Construction

[0030] In order to make the above objects, features and advantages of the present invention more comprehensible, specific implementations of the present invention will be described in detail below in conjunction with the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. However, the present invention can be implemented in many other ways different from those described here, and those skilled in the art can make similar improvements without departing from the connotation of the present invention, so the present invention is not limited by the specific embodiments disclosed below.

[0031] It should be noted that when an element is referred to as being “disposed on” another element, it may be directly on the other element or there may also be an intervening element. When an element is referred to as being "connected to" another element, it can be directly connected t...

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PUM

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Abstract

The invention relates to a pixel circuit comprising a transistor T1, a transistor T2, a transistor T3, a transistor T4, a transistor T5, a transistor T6, a transistor T7, a transistor T8, a capacitorC1, a capacitor C2 and a light-emitting diode D1. The pixel circuit has a compensation function; threshold voltage compensation can be carried out on the transistor T1 through the transistor T2, the transistor T1 and the transistor T3 by using a data signal, so that a driving current flowing through the transistor T1 is independent of the threshold voltage of the transistor T1 and thus the currentflowing through the light-emitting diode D1 is independent of the threshold voltage. Therefore, the light-emitting uniformity of the screen is improved.

Description

technical field [0001] The invention relates to the display field, in particular to a pixel circuit and a driving method thereof, a display panel, and a display device. Background technique [0002] Organic light-emitting display panels are increasingly used in the display field because of their advantages such as high contrast ratio, low power consumption, light viewing angle, and fast response speed. Generally, an organic light-emitting display panel includes pixel circuits arranged in an array. The pixel circuit usually includes a light-emitting diode D1 and a power supply. The current flowing through the light-emitting diode D1 is related to the power supply voltage. However, in the manufacturing process of the display panel, the threshold voltage of each driving transistor on the display panel is different due to technological reasons, so that the driving current flowing through the driving transistor is different, and the current flowing through the light-emitting diod...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G09G3/3208G09G3/3266G09G3/3233
CPCG09G3/3208G09G3/3233G09G3/3266G09G2320/0233
Inventor 赵国华贾溪洋朱晖
Owner KUNSHAN GO VISIONOX OPTO ELECTRONICS CO LTD