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A pixel circuit, display device and pixel compensation method

A technology of pixel circuit and switching circuit, applied in the field of pixel circuit and pixel compensation, to achieve the effects of stable lighting stage, precise control of lighting duration, and high lighting precision

Active Publication Date: 2022-05-06
INST OF MICROELECTRONICS CHINESE ACAD OF SCI
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a pixel circuit, a display device and a pixel compensation method, which are used to solve the problem that in the prior art, in the PAM+PWM combination driving mode for μLED high grayscale display, the PWM part can only realize positive threshold value compensation The problem

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  • A pixel circuit, display device and pixel compensation method
  • A pixel circuit, display device and pixel compensation method
  • A pixel circuit, display device and pixel compensation method

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Embodiment Construction

[0026] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0027] It should be noted that when an element is referred to as being “fixed” or “disposed on” another element, it may be directly on the other element or be indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.

[0028] In addition, the terms "first" and "second" are used for descriptive purposes only, and cannot be interpreted as indicating or implying relative importance or implicitly specifying the quantity of indic...

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Abstract

The invention discloses a pixel circuit, a display device and a pixel compensation method, which relate to the technical field of display circuits and are used to solve the problem that in the prior art, in the PAM+PWM combination driving mode for μLED high grayscale display, the PWM part can only realize The problem of positive threshold compensation. The pixel circuit includes: a first switch circuit, a second switch circuit, a first capacitor, a comparison circuit, a drive circuit and a light-emitting device. The second end of the first switch circuit is electrically connected to the first end of the first capacitor and the control end of the comparison circuit. The second end of the first capacitor is electrically connected to the second end of the comparison circuit. The second end of the second switch circuit is electrically connected to the first end of the comparison circuit and the control end of the driving circuit. The second end of the driving circuit is electrically connected with the light emitting device. The display device includes the above-described pixel circuit. The pixel compensation method applies the pixel compensation circuit described above.

Description

technical field [0001] The invention relates to the technical field of display circuits, in particular to a pixel circuit, a display device and a pixel compensation method. Background technique [0002] Compared with AMOLED (full name in English: Active-matrix organic light-emitting diode, full name in Chinese: active matrix organic light-emitting diode or active matrix organic light-emitting diode), μLED has smaller size, faster response speed, and luminous efficiency. Higher, stronger stability and longer service life. Therefore, the field of display applications based on μLEDs has been rapidly developed. In this field, oxide thin-film transistors (full English name: oxidethin-film transistor, English abbreviation: TFT) represented by amorphous indium gallium zinc oxide (English abbreviation: Amorphous indium gallium zinc oxide, English abbreviation: a-IGZO) Due to the advantages of small leakage, low manufacturing temperature and low cost, the material has become an imp...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G09G3/32
CPCG09G3/32
Inventor 耿玓黄施捷苏悦李泠卢年端刘明
Owner INST OF MICROELECTRONICS CHINESE ACAD OF SCI
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