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A digital driving pixel circuit, display panel and display device

A pixel circuit and digital drive technology, which is applied to static indicators, instruments, etc., can solve the problems affecting the display effect of the display device and the light emission of the light-emitting device, so as to achieve a good display effect and ensure the display effect

Active Publication Date: 2021-03-12
CHENGDU VISTAR OPTEOLECTRONICS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, in the digitally driven pixel circuit, there is a phenomenon that the light-emitting device emits light when the pixel is in the off state, which affects the display effect of the display device.

Method used

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  • A digital driving pixel circuit, display panel and display device
  • A digital driving pixel circuit, display panel and display device
  • A digital driving pixel circuit, display panel and display device

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Embodiment Construction

[0038] 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.

[0039] As mentioned in the background art, there is a problem in the digital driving pixel circuit that the light emitting device emits light when the pixel is in the off state, which affects the display effect. The inventor found that the reason for this problem is that in the existing digital drive pixel circuit, the drive transistor and the switch transistor are usually made of LTPS technology, and the leakage current is relatively large, which causes the light-emitting device to fail when the drive transistor i...

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Abstract

The embodiment of the present invention discloses a digitally driven pixel circuit, a display panel, and a display device. The digitally driven pixel circuit includes: a data writing module, a storage module, a driving module, a light emitting module, and a false light emission suppression module; The voltage at the control terminal is turned on or off, and drives the light-emitting module to emit light when it is turned on; the false light-emitting suppression module includes a control terminal, a first end and a second end, the first end of the false light-emitting suppression module and the first end of the light-emitting module Electrical connection, the second end of the false light emission suppression module is electrically connected to the second end of the light emitting module, the control end of the false light emission suppression module is used to input control signals, so that the first end and the second end of the false light emission suppression module are driving When the module is turned off, it is turned on, so that when the driving module is turned off, the potentials at both ends of the light-emitting device are the same, so that the light-emitting device is completely turned off, so that the light-emitting duration corresponding to each display gray scale can be accurately controlled to ensure a good display Effect.

Description

technical field [0001] The embodiments of the present invention relate to the field of display technology, and in particular to a digitally driven pixel circuit, a display panel and a display device. Background technique [0002] In recent years, display technology has developed rapidly, and the driving of display devices has become a hot topic in research and development. [0003] In the prior art, driving of a display device includes analog driving and digital driving. Compared with the analog drive, the digital drive has the advantages of low power consumption, less interference to the signal, and high tolerance to the consistency of the drive device. However, in the digitally driven pixel circuit, there is a phenomenon that the light-emitting device emits light when the pixel is in an off state, which affects the display effect of the display device. Contents of the invention [0004] The invention provides a digitally driven pixel circuit, a display panel and a disp...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G09G3/3225
Inventor 盖翠丽
Owner CHENGDU VISTAR OPTEOLECTRONICS CO LTD
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