Pixel circuit, driving method, display panel and display device
A technology for pixel circuits and driving circuits, applied in the fields of pixel circuits, driving methods, display panels and display devices, which can solve the problems that pixel circuits do not have threshold voltage and IR drop compensation functions, and cannot meet the brightness uniformity of AMOLED display screens, etc. , to achieve the effect of compensating the influence of display uniformity
Active Publication Date: 2020-07-10
BOE TECH GRP CO LTD +1
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Problems solved by technology
[0005] The main purpose of the present invention is to provide a pixel circuit, a driving method, a display panel and a display device, so as to solve the problem that the existing pixel circuit does not have threshold voltage and IR voltage drop compensation functions, and cannot meet the requirements of brightness uniformity of AMOLED display screens.
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[0045] 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.
[0046] 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.
[0047] In actual operation, when the transistor is a triode, the control...
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The invention provides a pixel circuit, a driving method, a display panel and a display device. The pixel circuit comprises a light-emitting element, a driving circuit, an energy storage circuit, a data write-in circuit, a compensation circuit and a light-emitting control circuit. The data write-in circuit is controlled by the data write-in control signal to write data voltage into the first end of the driving circuit and write initialization voltage into the second node; the compensation circuit controls the control end of the driving circuit to be communicated with the second end of the driving circuit under the control of the compensation control signal; and the light-emitting control circuit controls the first end of the driving circuit to be communicated with the first voltage end under the control of the light-emitting control signal, controls the second end of the driving circuit to be communicated with the light-emitting element, and controls the first voltage end to be communicated with the second node. The display uniformity can be improved.
Description
technical field [0001] The present invention relates to the field of display technology, in particular to a pixel circuit, a driving method, a display panel and a display device. Background technique [0002] AMOLED (Active-matrix organic light-emitting diode, active-matrix organic light-emitting diode) display is one of the hotspots in the display field at present. Its advantages of low energy consumption, self-illumination, wide viewing angle and high response speed make it not far away It is very likely that LCD screens will be completely replaced in the future. Therefore, the pixel circuit, which is one of the core technologies of AMOLED display, has important research significance. [0003] Limited by the manufacturing process and materials of thin-film transistors, the TFT (Thin Film Transistor, thin-film transistor) characteristics of each area of the AMOLED display screen will be different, that is, the threshold voltage of each TFT will be different; and with the...
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IPC IPC(8): G09G3/3291
CPCG09G3/3291G09G2320/0233
Inventor 梁雪波唐秀珠吴海龙陈帅唐滔良熊丽军董兴魏其源李琦田振国钱谦
Owner BOE TECH GRP CO LTD