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Pixel circuit, driving method, display panel and display device

A pixel circuit and display panel technology, which is applied in the direction of circuits, lighting devices, electric light sources, etc., can solve problems such as uneven display of the display screen, improve uniformity of light emission and display effect, eliminate adverse effects, and improve uneven light emission Effect

Active Publication Date: 2015-03-25
WUHAN TIANMA MICRO ELECTRONICS CO LTD +2
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  • Abstract
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to solve the above-mentioned technical problems, embodiments of the present invention provide a pixel circuit, a driving method, a display panel, and a display device including the display panel, so as to alleviate the display unevenness in the display screen of the organic light-emitting display device. phenomenon, improving the display effect of the organic light-emitting display device

Method used

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

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Embodiment Construction

[0033] 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 protection scope of the present invention.

[0034] As mentioned in the background section, the display screen of the organic light-emitting display device in the prior art has the phenomenon of non-uniform display.

[0035] The inventors found that the driving current of the light-emitting element in the organic light-emitting display device is proportional to the square of the difference between the gate-source voltage and the threshold voltage of the driving transistor, that is, Ioled∝(Vgs-Vth)^2. Whe...

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Abstract

The invention provides a pixel circuit, a driving method, a display panel and a display device. The pixel circuit comprises a first transistor, a second transistor, a third transistor, a fourth transistor, a fifth transistor, a sixth transistor, a driving transistor, a storage capacitor and a light emitting element. Through cooperative driving of all the transistors and the storage capacitor, the driving current of the driving transistor can be unrelated to the gate-source voltage and the threshold voltage of the driving transistor, so adverse influences are eliminated, the phenomenon that the display panel and the display device are non-uniform in light emission is effectively relieved, and the light emission uniformity and the display effect of pictures displayed by the display panel and the display device are improved.

Description

technical field [0001] The present invention relates to the technical field of organic light-emitting display, and in particular to a pixel circuit, a driving method, a display panel and a display device including the display panel. Background technique [0002] Organic Light Emitting Display (OLED) refers to the phenomenon in which organic semiconductor materials and light-emitting materials are driven by an electric field to cause light emission through carrier injection and recombination. The principle is to use ITO transparent electrodes and metal electrodes as devices respectively. Driven by a certain voltage, electrons and holes are injected from the cathode and anode into the electron and hole transport layer respectively, when the electrons and holes migrate to the light emitting layer through the electron and hole transport layer respectively , and meet in the light-emitting layer, they will form excitons and excite photomolecules to form excitation light. [0003]...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L27/32G09G3/32G09G3/3208G09G3/3233G09G3/3266H05B44/00
CPCG09G3/3233G09G3/3283G09G2300/0819G09G2300/0842G09G2300/0861G09G2320/043G09G2320/0233G09G3/3659
Inventor 陈丹钱栋顾寒昱
Owner WUHAN TIANMA MICRO ELECTRONICS CO LTD
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