Pixel driving circuit, driving method thereof, array substrate and display device

一种像素驱动电路、驱动周期的技术，应用在显示装置,像素驱动电路及其驱动方法,阵列基板领域，能够解决驱动方法复杂、功耗高等问题

Active Publication Date: 2015-06-10
HEFEI XINSHENG OPTOELECTRONICS TECH CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] During the actual application of the above-mentioned pixel driving circuit, the inventors of the present application found that the power consumption of the above-mentioned pixel driving circuit is relatively high, and the driving method is complicated

Method used

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

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Embodiment Construction

[0038] As mentioned in the background technology, the existing pixel driving circuit has high power consumption and complicated driving method. After a lot of experiments and research, the inventors of the present application found that one of the reasons for the aforementioned problems is: figure 2 As shown, it is a control timing diagram of an existing pixel driving circuit, and one frame (ie, one driving cycle) includes a reset period P1, a compensation period P2, a signal writing period P3 and a light emitting period P4.

[0039] In the reset period P1, when the gate control signal Sc is at a high potential, the control switch Tc is turned on, and at the same time, the data signal Data is at the reference potential Vref( figure 2 The low potential of the data signal Data is the reference potential Vref), so that the potential Vn=Vref of the input node n drives the gate-source voltage Vgs of the switching tube Td=Vn-Vp=Vref-Vp>Vth (wherein Vp is the voltage of the output n...

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Abstract

The invention provides a pixel driving circuit, a driving method thereof, an array substrate and a display device, and relates to the technical field of displaying. The pixel driving circuit, the driving method, the array substrate and the display device are used for reducing the power consumption of the pixel driving circuit and simplifying the driving method of the pixel driving circuit. The pixel driving circuit comprises a reset unit, a data writing unit, a compensation unit and a light emitting unit. The reset unit is used for outputting a reference signal. The data writing unit is used for outputting a data signal. The compensation unit is connected with the reset unit, connected with the data writing unit and further connected with an output node. A voltage signal of a power source is received by the compensation unit, and the compensation unit is used for resetting the potential of the output node to the reset potential, upwards pulling the potential of the output node to the first potential from the reset potential, upwards pulling the potential of the output node to the second potential from the first potential, generating a light emitting driving signal and outputting the light emitting driving signal to the output node. The light emitting unit is connected with the output node, further connected with the negative electrode of the power source and used for being driven by the light emitting driving signal to emit light in the light emitting period. The pixel driving circuit is used for driving the light emitting unit to emit light.

Description

technical field [0001] The present invention relates to the field of display technology, in particular to a pixel driving circuit and a driving method thereof, an array substrate, and a display device. Background technique [0002] AMOLED (Active Matrix Organic Light-Emitting Diode, Active Matrix Organic Light-Emitting Diode) display has many advantages such as self-illumination, ultra-thin, fast response, high contrast, wide viewing angle, etc., and is currently a display device that has attracted widespread attention. [0003] An AMOLED display includes a plurality of pixels arranged in a matrix, and driving and controlling each pixel to display gray scales depends on a pixel driving circuit inside the pixel. The pixel drive circuit mainly includes: a switch tube, a capacitor, and an OLED (Organic Light-Emitting Diode, organic light-emitting diode) light-emitting device, such as figure 1 As shown, it is a common pixel driving circuit. The pixel driving circuit includes th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G09G3/32G09G3/3275
CPCG09G3/3233G09G2300/0819G09G2300/0842G09G2300/0866G09G2300/0852G09G2310/0251G09G2300/043G09G2330/021G09G3/32G09G3/325G09G3/3258G09G3/3291G09G2310/08
Inventor 徐攀李永谦
Owner HEFEI XINSHENG OPTOELECTRONICS TECH CO LTD
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