Pixel circuit and driving method thereof and organic light emitting display

A pixel circuit and organic technology, applied in the field of organic light-emitting displays, can solve problems such as image sticking, and achieve the effect of avoiding threshold voltage deviation and threshold voltage drift.
CN106887207AInactive Publication Date: 2017-06-23KUNSHAN NEW FLAT PANEL DISPLAY TECH CENT +1
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
KUNSHAN NEW FLAT PANEL DISPLAY TECH CENT
Publication Date
2017-06-23
Estimated Expiration
Not applicable · inactive patent

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Abstract

In the pixel circuit and its driving method and the organic light emitting display provided by the present invention, the threshold voltage of the third transistor is compensated by the fourth transistor, so that the current output by the third transistor is provided by the data voltage provided by the data line and the first power supply The provided first power supply voltage is determined regardless of the threshold voltage of the third transistor, so that brightness unevenness caused by threshold voltage deviation can be avoided, thus, the organic light-emitting display using the pixel circuit and its driving method can simultaneously Avoid display problems caused by threshold voltage drift.
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Description

technical field

[0001] The present invention relates to the field of flat panel display technology, in particular to a pixel circuit, a driving method for the pixel circuit and an organic light-emitting display with the pixel circuit. Background technique

[0002] Organic light-emitting display (OLED) is a new type of flat-panel display, which has many advantages such as active light emission, high contrast, fast response, thin and light, and is known as a new generation of display that can replace liquid crystal display (LCD).

[0003] Please refer to figure 1 , which is a schematic structural diagram of a pixel circuit of an organic light emitting display in the prior art. Such as figure 1 As shown, the existing pixel circuit 10 includes a first transistor T1, a second transistor T2 and a storage capacitor Cs, the gate of the first transistor T1 is connected to the scan line Sn, and the source of the first transistor T1 is connected to the data The line Dm is connected,...

Claims

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