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Pixel driving circuit and display device

A pixel driving circuit and transistor driving technology, applied in static indicators, instruments, etc., can solve problems such as low contrast, abnormal display brightness, etc.

Active Publication Date: 2020-05-19
KUNSHAN GO VISIONOX OPTO ELECTRONICS CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] In view of this, embodiments of the present invention provide a pixel driving circuit, a pixel driving method, and a display device, which solve the technical problems of abnormal display brightness and low contrast of high-resolution and large-screen display screens in the prior art

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  • Pixel driving circuit and display device

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Embodiment Construction

[0023]As mentioned in the background, there are technical problems in the prior art that the display screen with high resolution and large screen has abnormal display brightness and low contrast ratio. The inventor found that the reason for this problem is as follows. The resolution of the display screen is getting higher and higher, which leads to the reduction of the writing time of the pixel circuit and the insufficient driving voltage of the pixel, so that the pixel circuit cannot correctly display the corresponding brightness, and even the black state is not black enough, which reduces the contrast of the display screen. .

[0024] In order to solve the above problems, the present invention provides a pixel driving circuit, which is used to drive high-resolution and large-screen display screens to emit light, by receiving a pixel driving voltage close to the pixel driving voltage of the row before driving the light-emitting module to receive the driving voltage Driving t...

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Abstract

The embodiment of the invention provides a pixel driving circuit, a pixel driving method and a display device. The technical problems that in the prior art, the display brightness of a high-resolutionand large-screen display screen is abnormal, and the contrast ratio is low are solved. The pixel driving circuit provided by the embodiment of the invention comprises a driving light-emitting module,a light-emitting device, a data storage control module and a driving light-emitting expansion module used for providing driving light-emitting expansion voltage for the driving light-emitting module.Before the driving light-emitting module receives the driving voltage, the driving light-emitting expansion module already writes the driving light-emitting expansion voltage into the driving light-emitting module, so that the driving light-emitting module receives the voltage twice, the writing time of the driving voltage is prolonged, the driving voltage value is increased, and the charging rate in one process is increased. Therefore, the pixel circuit can correctly display corresponding brightness, the black state is black enough, and the contrast ratio of a display screen is increased.

Description

technical field [0001] The present invention relates to the field of display technology, in particular to a pixel driving circuit, a driving method and a display device. Background technique [0002] At present, electronic products have higher and higher requirements on the resolution of display screens. The increase in the size of the display screen and the improvement in the resolution greatly shorten the writing time of the pixel circuit, resulting in insufficient pixel driving voltage, which makes the pixel circuit unable to correctly display the corresponding brightness, and even the black state is not black enough. The contrast ratio of the display screen of the electronic product is reduced. Contents of the invention [0003] In view of this, the embodiments of the present invention provide a pixel driving circuit, a pixel driving method, and a display device, which solve the technical problems of abnormal display brightness and low contrast of high-resolution and ...

Claims

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Application Information

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IPC IPC(8): G09G3/3208
CPCG09G3/3208
Inventor 李威龙张露胡思明韩珍珍
Owner KUNSHAN GO VISIONOX OPTO ELECTRONICS CO LTD
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