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Pixel circuit, pixel driving method, and display device

A pixel circuit and circuit technology, applied in static indicators, instruments, etc., can solve the problems of large number of transistors and unfavorable layout space, etc., and achieve the effect of reducing the number and saving layout space

Active Publication Date: 2022-08-09
BOE TECH GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Existing pixel circuits that provide large light-emitting currents use a large number of transistors, which is not conducive to saving layout space

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

[0042] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, but not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0043] The transistors used in all the embodiments of the present invention may be triodes, thin film transistors, 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.

[0044] In actual operation, when the tran...

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Abstract

The present invention provides a pixel circuit, a pixel driving method and a display device. The pixel circuit includes an energy storage circuit, a first initialization circuit, a data writing circuit, a compensation circuit, a light-emitting element and N driving branches, where N is an integer greater than 1; the first end of the energy storage circuit is electrically connected to the driving node, and the storage The second terminal of the energy circuit is electrically connected to the first voltage terminal; the first initialization circuit is electrically connected to the reset control terminal, the initial voltage terminal and the driving node respectively, and is used for writing the initial voltage under the control of the reset control signal a drive node; the compensation circuit is respectively electrically connected to the scan control terminal, the drive node and a specific second node among the N second nodes, and is used for controlling the drive node and the specific second node under the control of the scan control signal connection between. The present invention can reduce the number of used transistors and save layout space on the premise of increasing the light-emitting current of the light-emitting element.

Description

technical field [0001] The present invention relates to the field of display technology, and in particular, to a pixel circuit, a pixel driving method and a display device. Background technique [0002] In the related art, for low PPI (pixels per inch, the number of pixels per inch), low aperture ratio OLED (organic light emitting diode) display products, under the same brightness, the luminous current of the sub-pixels needs to be extremely large (light emitting). The current value of the current reaches uA level), the light-emitting current is 50-100 times that of the conventional sub-pixels, and multiple pixel driving circuits need to be used to drive the same light-emitting element to emit light, so as to improve the light-emitting element of the light-emitting element. current. The existing pixel circuit that provides a large light-emitting current adopts a large number of transistors, which is not conducive to saving layout space. SUMMARY OF THE INVENTION [0003] ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G09G3/3258
CPCG09G3/3258G09G3/3233G09G2300/0819G09G2300/0842G09G2300/0861G09G2310/061G09G2320/0233
Inventor 王丽
Owner BOE TECH GRP CO LTD