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Pixel driving circuit, driving method thereof, and display device

A technology of pixel driving circuit and driving terminal, which is applied to static indicators, instruments, etc., can solve problems such as uneven threshold voltage and affect image display effect, and achieve the effect of small pixel layout, improved resolution, and increased contrast

Active Publication Date: 2018-09-18
CHENGDU BOE OPTOELECTRONICS TECH CO LTD +1
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  • Abstract
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  • Claims
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AI Technical Summary

Problems solved by technology

Due to the process and device aging, the threshold voltage (Vth) of the driving TFT of each pixel is uneven, and the threshold voltage of the driving TFT of each pixel is uneven, which leads to the flow through each pixel. The current of the OLED changes, which affects the display effect of the entire image

Method used

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  • Pixel driving circuit, driving method thereof, and display device
  • Pixel driving circuit, driving method thereof, and display device
  • Pixel driving circuit, driving method thereof, and display device

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Embodiment Construction

[0032] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of patent protection of the present invention.

[0033] Such as figure 2 As shown, according to one aspect of the present invention, an embodiment of the present invention provides a pixel driving circuit. The pixel driving circuit includes: a light emitting device L, a storage capacitor Cst, a driving unit D and five switch units S1, S2, S3, S4 and S5; each switch unit includes a control terminal, a first signal terminal and a second signal terminal The control terminal of the switch unit is use...

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Abstract

Provided are a pixel driving circuit, a driving method thereof, and a display device. In the embodiment of the present invention, the drive circuit is realized by using one storage capacitor, one drive unit and five switch units, and a smaller pixel layout can be obtained, which helps to improve the resolution of the display; When the display effect, increased contrast.

Description

technical field [0001] The present invention relates to the field of display technology, in particular to a pixel driving circuit, a driving method thereof, and a display device. Background technique [0002] Active Matrix Organic Light Emitting Diode (AMOLED) display is one of the hotspots in the field of flat panel display research. Compared with liquid crystal displays, organic light-emitting diodes (OLEDs) have the advantages of low energy consumption, low production cost, self-illumination, wide viewing angle and fast response speed. Replace traditional LCD display. Pixel drive circuit design is the core technical content of AMOLED display, which has important research significance. [0003] Unlike TFT-LCD (Thin Film Transistor Liquid Crystal Display, Thin Film Transistor Liquid Crystal Display), which uses a stable voltage to control brightness, OLED is current-driven and requires a stable current to control light emission. Due to reasons such as process technology ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G09G3/3266G09G3/3258
CPCG09G3/3258G09G3/3266G09G3/3233G09G2300/0819G09G2300/0842G09G2300/0861G09G2320/0238
Inventor 冯佑雄
Owner CHENGDU BOE OPTOELECTRONICS TECH CO LTD
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