Pixel driving circuit and organic light emitting display device

A technology of pixel driving circuit and organic light-emitting element, applied in static indicators, instruments, etc., can solve the problems of hysteresis effect and afterimage of organic light-emitting display device

Active Publication Date: 2020-11-13
WUHAN TIANMA MICRO ELECTRONICS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] In the prior art, organic light-emitting display devices have hysteresis effect and image sticking

Method used

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  • Pixel driving circuit and organic light emitting display device
  • Pixel driving circuit and organic light emitting display device
  • Pixel driving circuit and organic light emitting display device

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Embodiment Construction

[0056] In order to better understand the technical solutions of the present invention, the embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0057] It should be clear that the described embodiments are only some of the embodiments of the present invention, not all of them. 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 protection scope of the present invention.

[0058] Terms used in the embodiments of the present invention are only for the purpose of describing specific embodiments, and are not intended to limit the present invention. As used in the embodiments of the present invention and the appended claims, the singular forms "a", "said" and "the" are also intended to include the plural forms unless the context clearly indicates otherwise.

[0059] It should be understood that the ter...

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Abstract

The invention provides a pixel driving circuit and an organic light-emitting display device. The pixel driving circuit comprises a driving transistor, a first light-emitting control transistor, a second light-emitting control transistor, an organic light-emitting element, a first power supply signal terminal, a transmitting signal terminal and a first node, wherein the first node is electrically connected with the drain of the driving transistor, and the first node is electrically connected with the first electrode of the second light-emitting control transistor. The pixel driving circuit alsocomprises a first reset transistor, a first scanning signal terminal and a first reset signal terminal, wherein the gate of the first reset transistor is electrically connected with the first scanning signal terminal; the first electrode of the first reset transistor is electrically connected with the first node; and the second electrode of the first reset transistor is electrically connected with the first reset signal terminal. The pixel driving circuit executes a first initialization stage, current flows through the driving transistor from the source of the driving transistor to the drainof the driving transistor, threshold voltage offset caused by bias stress is eliminated, and the hysteresis effect and the ghost image phenomenon are alleviated.

Description

【Technical field】 [0001] The present invention relates to the technical field of organic light emitting display, in particular to a pixel driving circuit and an organic light emitting display device. 【Background technique】 [0002] In the prior art, organic light emitting display devices have hysteresis effect and afterimage phenomenon. 【Content of invention】 [0003] In order to solve the above technical problems, the present invention provides a pixel driving circuit and an organic light emitting display device. [0004] In one aspect, the present invention provides a pixel driving circuit. [0005] The pixel driving circuit includes a driving transistor, a first light emitting control transistor, a second light emitting control transistor, an organic light emitting element, a first power signal terminal, an emission signal terminal, and a first node; [0006] The first node is electrically connected to the drain of the driving transistor, and the first node is electri...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G09G3/3208G09G3/3233G09G3/3266
CPCG09G3/3208G09G3/3233G09G3/3266G09G2320/0233G09G2320/0257
Inventor 刘丽媛张翠翠安平
Owner WUHAN TIANMA MICRO ELECTRONICS CO LTD
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