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Pixel circuit, driving method thereof, and display device

A technology of a pixel circuit and a driving method, applied in the field of a driving method of a pixel circuit and a display device, can solve the problems of non-identity, non-uniform brightness, etc., and achieve the effect of eliminating degradation

Active Publication Date: 2017-12-22
HEFEI XINSHENG OPTOELECTRONICS TECH CO LTD +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, different light-emitting elements in the display device are affected by the process conditions, and their V oled are not exactly the same, resulting in uneven brightness

Method used

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

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Embodiment Construction

[0051] Specific embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings. It should be understood that the specific embodiments described here are only used to illustrate and explain the present invention, and are not intended to limit the present invention.

[0052] As an aspect of the present invention, a pixel circuit is provided, such as figure 2 As shown, it includes: a driving transistor Tr, a storage capacitor Cs, a data writing module 10, a light emitting element 20 and a predetermined voltage writing module 30;

[0053] The first end of the storage capacitor Cs is connected to the gate of the drive transistor Tr, the second end of the storage capacitor Cs is connected to the second pole of the drive transistor Tr, the first pole of the drive transistor Tr is connected to the high-level input terminal ELVDD, and the drive The second pole of the transistor Tr is connected to the anode of the light-emitting el...

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Abstract

The invention discloses a pixel circuit, a driving method thereof, and a display device. The pixel circuit includes: a driving transistor, a storage capacitor, a data writing module, a light-emitting element, and a predetermined voltage writing module; One end is connected to the gate of the driving transistor, the second end of the storage capacitor is connected to the second pole of the driving transistor, and the predetermined voltage writing module is used to make the second pole of the driving transistor The pre-charging phase and the compensation phase reach a predetermined potential; the data writing module is used to store the data voltage on the data line into the storage capacitor during the compensation phase. The invention can eliminate the influence of the cross-voltage of the light-emitting element on the driving current.

Description

technical field [0001] The present invention relates to the field of display technology, in particular to a pixel circuit, a driving method for the pixel circuit and a display device. Background technique [0002] Organic Light-Emitting Diode (OLED) display devices have the advantages of self-illumination, high contrast, wide color gamut, etc., and because of their low power consumption and easy realization of flexible displays, they have broad application prospects. [0003] Each pixel circuit of the organic light emitting diode display device integrates a set of thin film transistors and storage capacitors, and through the driving control of the thin film transistors and storage capacitors, the control of the current passing through the light emitting elements is realized. Such as figure 1 Shown is a schematic structural diagram of a pixel circuit in the prior art, including four thin film transistors T1, T2, T3 and Tr and a storage capacitor Cs, ELVDD is a high-level inp...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G09G3/3233
CPCG09G2300/0819G09G2310/08G09G3/3241G09G2300/0842G09G2310/0248G09G2320/0233G09G2320/043G09G3/3258
Inventor 徐攀吴仲远张玉婷李永谦
Owner HEFEI XINSHENG OPTOELECTRONICS TECH CO LTD
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