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Pixel circuit, display device and pixel compensation method

A technology of pixel circuit and switching circuit, applied in the field of pixel compensation and pixel circuit, to achieve the effect of precise control of light-emitting duration, high light-emitting precision, and stable light-emitting stage

Active Publication Date: 2021-10-08
INST OF MICROELECTRONICS CHINESE ACAD OF SCI
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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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  • Pixel circuit, display device and pixel compensation method
  • 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, relates to the technical field of display circuits, and is used for solving the problem that a PWM part can only realize positive threshold compensation in a PAM + PWM combined driving mode for mu LED high-gray-scale display in the prior art. The pixel circuit comprises a first switching circuit, a second switching circuit, a first capacitor, a comparison circuit, a driving circuit and a light-emitting device. The second end of the first switching circuit is electrically connected with 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 with the second end of the comparison circuit. The second end of the second switching circuit is electrically connected with 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 comprises the pixel circuit. The pixel compensation method is applied to the pixel compensation circuit.

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 Applications(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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