A kind of driving method of pixel circuit, display panel and pixel circuit

A technology of a pixel circuit and a driving method, which is applied in the display field, and can solve problems such as poor image layering and affecting the improvement of the display quality of the display panel, and achieve the effect of expanding the brightness range, fine low-gray-scale driving current, and realizing fine control

Active Publication Date: 2021-07-09
SHANGHAI AVIC OPTOELECTRONICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the existing display panels have the problem of poor image layering at low gray levels, which affects the improvement of the display quality of the display panels.

Method used

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  • A kind of driving method of pixel circuit, display panel and pixel circuit
  • A kind of driving method of pixel circuit, display panel and pixel circuit
  • A kind of driving method of pixel circuit, display panel and pixel circuit

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Embodiment Construction

[0026] 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, but not to limit the present invention. In addition, it should be noted that, for the convenience of description, only some structures related to the present invention are shown in the drawings but not all structures.

[0027] As mentioned in the background technology, the existing display panels have the problem of poor image layering at low gray scales. The inventors have found through research that the reason for this problem is that the existing pixel circuits affect the light-emitting elements at low gray scales. It is difficult to control.

[0028] The following uses Micro Light Emitting Diode (micro-LED / μLED) as an example to illustrate, figure 1 A schematic diagram of a curve showing the luminous efficiency of a micro li...

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Abstract

The embodiment of the invention discloses a pixel circuit, a display panel and a driving method for the pixel circuit. The pixel circuit includes a first drive transistor and a second drive transistor; the second pole of the first switch transistor is electrically connected to the gate of the first drive transistor and the gate of the second drive transistor; the first pole of the first drive transistor And the first pole of the second driving transistor is electrically connected to the first power input terminal, and the second pole of the first driving transistor and the second pole of the second driving transistor are both connected to the light-emitting element; wherein, the threshold of the first driving transistor The voltage is greater than the threshold voltage of the second driving transistor, and the carrier mobility of the second driving transistor is lower than that of the first driving transistor. Compared with the prior art, the embodiments of the present invention improve the image layering of the display panel at low grayscale, expand the brightness range of the light-emitting element, and improve the display quality of the display panel.

Description

technical field [0001] Embodiments of the present invention relate to display technologies, and in particular, to a pixel circuit, a display panel, and a driving method for the pixel circuit. Background technique [0002] With the continuous development of display technology, the application range of display panels is becoming wider and wider, and people's requirements for display panels are also getting higher and higher. In particular, the display quality of a display panel has always been one of the important indicators for consumers and panel manufacturers to measure the quality of a display panel. However, the existing display panels have the problem of poor image layering at low gray levels, which affects the improvement of the display quality of the display panels. Contents of the invention [0003] The present invention provides a pixel circuit, a display panel and a driving method for the pixel circuit, so as to improve the image layering of the display panel at ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G09G3/32G09G3/3208
CPCG09G3/32G09G3/3208
Inventor 吴天一
Owner SHANGHAI AVIC OPTOELECTRONICS
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