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Pixel compensation circuit, array substrate and display device

A compensation circuit, pixel technology, applied in static indicators, instruments, etc., can solve the problems of TFT stability decline, signal line voltage attenuation, affecting the current uniformity in the display area, etc., to compensate for the influence of signal voltage attenuation on current, compensation Effect of OLED Current Bias

Active Publication Date: 2016-04-06
BOE TECH GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] At present, in the field of AMOLED display, especially in the design of large-size substrates, there are TFT uniformity and stability problems in the production process of the backplane TFT (Thin Film Transistor, thin film transistor), which will not only make the driving OLED current uneven, Causes a shift in threshold voltage, and also has a problem with TFT stability degradation after a long time of biasing on
[0004] In the prior art, there are many AMOLED compensation circuit designs that only consider the problem of threshold voltage shift, but ignore the trend of increasing the size of AMOLED, the load of the signal line will also become larger and larger, resulting in signal lines There will be voltage attenuation on the display area, which will affect the current uniformity of the display area.

Method used

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  • Pixel compensation circuit, array substrate and display device
  • Pixel compensation circuit, array substrate and display device

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Embodiment 1

[0029] An embodiment of the present invention proposes a pixel compensation circuit, see figure 1 , the circuit includes: organic light emitting diode D1, driving transistor M1, first to fifth switching elements M2 to M6, and storage capacitor C1, wherein:

[0030] The cathode of the organic light emitting diode D1 is connected to the second end of the first switch element M2; the first end of the first switch element M2 is connected to the output end of the driving transistor M1 and the first end of the fifth switch element M6;

[0031] The control terminal of the driving transistor M1 is connected to the second terminal of the third switching element M4, the second terminal of the fifth switching element M6, and the first terminal of the storage capacitor C1 (at figure 1 in point B);

[0032] The second end of the storage capacitor C1 is connected to the second end of the fourth switch element M5 and the second end of the second switch element M3 (at figure 1 point A).

...

Embodiment 2

[0058] Based on the same inventive concept, an embodiment of the present invention further provides an array substrate, which includes any one of the above pixel compensation circuits. Since the array substrate provided by the embodiment of the present invention has the same technical features as any of the above-mentioned pixel compensation circuits, it can also solve the same technical problem and produce the same technical effect.

Embodiment 3

[0060] Based on the same inventive concept, an embodiment of the present invention further provides a display device, the display device comprising any of the above array substrates. The display device can be any product or component with display function, such as electronic paper, OLED panel, mobile phone, tablet computer, TV, monitor, notebook computer, digital photo frame, and navigator.

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Abstract

The invention relates to the field of liquid crystal display manufacture, and provides a pixel compensation circuit, an array substrate and a display device. Aiming at the problems in the prior art of uneven luminescence caused by threshold voltage offset, TFT stability decline after turning on the bias voltage for a long time, and voltage attenuation on the signal line affecting the current uniformity of the display area, the present invention uses a The pixel compensation circuit of 6T1C is an example, so that it not only has the function of compensating the threshold voltage shift, but also has the function of compensating the influence of signal voltage attenuation on the current, and also greatly reduces the influence of the signal between frames.

Description

technical field [0001] The invention relates to the field of liquid crystal display manufacturing, and in particular provides a pixel compensation circuit, an array substrate and a display device. Background technique [0002] Active Matrix / Organic Light Emitting Diode (AMOLED) display is a display technology used in TVs and mobile devices. With its low power consumption, low cost and large size, it is used in power-sensitive portable electronic devices. has broad application prospects. [0003] At present, in the field of AMOLED display, especially in the design of large-size substrates, the backplane TFT (ThinFilmTransistor, thin film transistor) has problems with the uniformity and stability of the TFT during the production process, which will not only make the driving OLED current uneven, This leads to a shift in the threshold voltage, and the problem of TFT stability degradation after a long time of turning on the bias voltage. [0004] In the prior art, there are man...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G09G3/3233
CPCG09G3/3233G09G2300/0819G09G2300/0842G09G2300/0861G09G2310/08G09G2320/0223G09G3/3258G09G2310/061
Inventor 马占洁
Owner BOE TECH GRP CO LTD
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