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Pixel circuit and display panel

A pixel circuit and electrical connection technology, which is applied in the display field, can solve the problems of slow control speed of light-emitting devices, slow on-off switching speed, poor transistor characteristics, etc., and achieves good display effect, small on-resistance, The effect of fast turn-on and turn-off speeds

Pending Publication Date: 2021-12-31
CHENGDU VISTAR OPTEOLECTRONICS CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, existing display panels have the problems of poor transistor characteristics and slow on-off switching speed, which makes the control speed of light-emitting devices slow and makes the display effect poor.

Method used

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  • Pixel circuit and display panel

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Embodiment Construction

[0040] 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.

[0041]As mentioned in the background art, existing display panels have the problems of poor transistor characteristics and slow on-off switching speed, resulting in poor display effect. The inventors have found through research that the reason for the above problems is that the existing display panel includes multiple pixel circuits, and each pixel circuit usually includes multiple transistors. During the manufacturing process of the display panel, due to process factors, some transistors will inevitably There is ...

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Abstract

The embodiment of the invention discloses a pixel circuit and a display panel. The pixel circuit comprises a data write-in module, a storage module, a voltage selection module and a light emitting module. The voltage selection module comprises a first transmission gate and a second transmission gate, and each of the first transmission gate and the second transmission gate comprises at least two transistors which are connected in parallel and have different channel types; compared with a single transistor, the transistors with different channel types can realize characteristic complementation; the invention has smaller on-resistance, so that the semiconductor device has higher on-off speed; the first power supply voltage and the second power supply voltage are quickly selected, so that the bright and dark states of the light-emitting module are accurately and quickly controlled; the light-emitting duration of the light-emitting module can be accurately controlled, so that the gray scale is accurately displayed in each frame, and a good display effect is ensured.

Description

technical field [0001] Embodiments of the present invention relate to the field of display technology, and in particular, to a pixel circuit and a display panel. Background technique [0002] With the development of display technology, the requirements for display effect are getting higher and higher. [0003] Existing pixel circuits usually include a plurality of transistors and light emitting devices, and the transistors control the brightness of the light emitting devices, thereby controlling the switching of gray scales. [0004] However, existing display panels have the problems of poor transistor characteristics and slow on-off switching speed, which makes the control speed of the light-emitting device light and dark states slow, resulting in poor display effect. Contents of the invention [0005] The present invention provides a pixel circuit and a display panel to realize fast control of the bright and dark states of a light-emitting device, realize fast switching...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G09G3/30G09G3/32G09G3/3225
CPCG09G3/30G09G3/32G09G3/3225
Inventor 黄飞钱先锐张东豪李路康李春红
Owner CHENGDU VISTAR OPTEOLECTRONICS CO LTD
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