Pixel driving circuit and a display device

A pixel driving circuit and driving transistor technology, applied in static indicators, instruments, etc., can solve the problems of low contrast of large-screen display screens, and achieve the effects of prolonging the time of no light, increasing the contrast, and reducing the brightness

Active Publication Date: 2019-05-28
KUNSHAN GO VISIONOX OPTO ELECTRONICS CO LTD
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Problems solved by technology

[0003] In view of this, the embodiment of the present invention provides a pixel driving circuit and a display device, w...

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  • Pixel driving circuit and a display device

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Embodiment Construction

[0023] As mentioned in the background technology, the contrast ratio of the high-resolution and large-screen display screen in the prior art is low, which affects the display effect of the display screen. The inventors found that the reason for this problem is that the resolution of the display screen is increasing The higher the value, the less time it takes to charge the pixels, which increases the average current of the display screen during the light-emitting process, thereby reducing the contrast of the display screen.

[0024] Based on this, the present invention provides a pixel driving circuit, which is applied to drive high-resolution and large-screen display screens to emit light, by prolonging the time when the light-emitting devices in the display screen do not emit light (that is, the time when the display screen displays a black picture) , and then reduce the average current of the zero gray scale, so that the brightness of the display screen is reduced when the s...

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Abstract

The embodiment of the invention provides a pixel driving circuit and a display device. The pixel driving circuit and the display device solve the technical problem that in the prior art, the contrastratio of a high-resolution and large-screen display screen is low. The embodiment of the invention provides a pixel driving circuit including a voltage storage module, a light emitting device and a light emitting driving module, and driving the light-emitting module to drive the light-emitting device to emit light, the voltage storage module shunts the driving current generated by driving the light-emitting module, that is, the driving current charges the voltage storage module, when the charging is started, the anode voltage of the light-emitting device does not reach the starting voltage ofthe light-emitting device, the light-emitting device does not emit light, and when the voltage storage module is charged with a certain electric quantity, the light-emitting device emits light; The driving circuit provided by the embodiment of the invention actually prolongs the non-light-emitting time of the light-emitting device, and further reduces the average current of zero gray scale, so that the brightness of the display screen in a black picture is reduced, and the contrast ratio of the 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 and a display device. Background technique [0002] At present, the resolution of display screens of electronic products is getting higher and higher, but as the size of the display screen increases, the charging time decreases and the load increases, thereby reducing the contrast ratio of the display screens of electronic products. Contents of the invention [0003] In view of this, the embodiments of the present invention provide a pixel driving circuit and a display device, which solve the technical problem of low contrast ratio of a high-resolution and large-screen display screen in the prior art. [0004] In order to make the purpose, technical means and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings. Apparently, the described embodi...

Claims

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Application Information

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IPC IPC(8): G09G3/3208
Inventor 朱杰韩珍珍胡思明张元波
Owner KUNSHAN GO VISIONOX OPTO ELECTRONICS CO LTD
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