Pixel driving circuit, pixel driving method, display panel and display device
A pixel driving circuit and a driving circuit technology are applied in the fields of pixel driving methods, pixel driving circuits, display panels and display devices, and can solve the problems of non-uniform threshold voltage and non-uniform display.
Active Publication Date: 2021-02-05
BOE TECH GRP CO LTD
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Problems solved by technology
[0003] The main purpose of the present invention is to provide a pixel driving circuit, a pixel driving method, a display panel and a display device to solve the problems caused by the non-uniform threshold voltage of different light-emitting elements in the display panel and the non-uniform threshold voltage of different first driving transistors. The problem of uneven display caused by
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[0070] 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.
[0071] The transistors used in all embodiments of the present invention may be triodes, thin film transistors or field effect transistors or other devices with the same characteristics. In the embodiment of the present invention, in order to distinguish the two poles of the transistor except the control pole, one pole is called the first pole, and the other pole is called the second pole.
[0072] In actual operation, when the transistor is a triode, the contr...
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The invention provides a pixel driving circuit, a pixel driving method, a display panel and a display device. The pixel drive circuit includes a current control circuit and a time control circuit, the current control circuit is used to control generation and output drive current through the drive current output terminal; the time control circuit includes a first data writing circuit and a drive time control circuit; The first data writing circuit is used to control writing the first data voltage provided by the first data line into the driving time control circuit under the control of the first gate driving signal provided by the first gate line; The driving time control circuit is electrically connected to the reference voltage terminal, the current control circuit, the first data writing circuit and the light-emitting element, and is used to control the driving current through the driving current according to the reference voltage and the first data voltage. The time when the light-emitting element emits light; the reference voltage terminal is used to provide the reference voltage. The present invention improves display uniformity.
Description
technical field [0001] The present invention relates to the field of display technology, in particular to a pixel driving circuit, a pixel driving method, a display panel and a display device. Background technique [0002] In the self-luminous display control technology, because the current control capability is limited, it is difficult to balance high brightness and high contrast, so the gray scale control needs to be controlled simultaneously by current and time. However, in the prior art, due to the non-uniform threshold voltages of different light-emitting elements in the display panel and the non-uniform threshold voltage of the first driving transistor in the timing control circuit, the problem of non-uniform display may occur. Contents of the invention [0003] The main purpose of the present invention is to provide a pixel driving circuit, a pixel driving method, a display panel and a display device to solve the problems caused by the non-uniform threshold voltages...
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IPC IPC(8): G09G3/3258
CPCG09G3/3258G09G3/3241G09G3/3283G09G2300/0814G09G2300/0819G09G2300/0842G09G2300/0866G09G2310/0251G09G2320/045G09G3/325G09G3/3291G09G3/3659
Inventor 岳晗玄明花张粲王灿丛宁陈小川
Owner BOE TECH GRP CO LTD