A light emitting device, a pixel circuit, its control method and corresponding device

A technology for light-emitting devices and pixel circuits, which is applied in semiconductor/solid-state device manufacturing, circuits, semiconductor devices, etc., and can solve problems such as blurred display images and uneven display of display panels.

Active Publication Date: 2020-03-03
BOE TECH GRP CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The embodiment of the present invention provides a light-emitting device, a pixel circuit, its control method, and a corresponding device, which are used to solve the problems of uneven display and blurred display screen in low-grayscale display in the prior art.

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  • A light emitting device, a pixel circuit, its control method and corresponding device
  • A light emitting device, a pixel circuit, its control method and corresponding device
  • A light emitting device, a pixel circuit, its control method and corresponding device

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Embodiment Construction

[0058] Specific implementations of the above-mentioned light-emitting device, pixel circuit, control method, array substrate, and display device provided by the embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0059] An embodiment of the present invention provides a light emitting device, such as figure 1 As shown, it may include: cathode 01, anode 02 and light emitting layer 03; wherein, cathode 01 includes first sub-cathode 011 and second sub-cathode 012 arranged in the same layer; anode 02 includes first sub-anode 021 and second sub-cathode 012 arranged in the same layer The second sub-anode 022 ; the light-emitting layer 03 is located between the cathode 01 and the anode 02 .

[0060] In the above-mentioned light-emitting device provided by the embodiment of the present invention, the cathode and the anode are partitioned to form two sub-cathodes and two sub-anodes, so that the light-emitting area of ​​th...

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Abstract

The invention discloses a light-emitting device, a pixel circuit, its control method and a corresponding device. The light-emitting device divides the cathode and the anode into two sub-cathodes and two sub-anodes, so that the light-emitting area of ​​the light-emitting device can be controlled. Driving different light-emitting areas of the light-emitting device to emit light can help slow down the attenuation speed of the light-emitting layer and prolong the service life of the light-emitting device; at the same time slowing down the attenuation speed of the light-emitting layer can help reduce the light emission of different colors of light-emitting devices during use The difference in attenuation between layers can reduce the problems of uneven display and afterimage caused by inconsistent attenuation of different color luminescent materials. In addition, the above-mentioned light-emitting device is applied to the pixel circuit, and the different light-emitting areas of the light-emitting device are driven by the driving current, so that the display of high, medium and low light-emitting brightness can be realized, and the difference of the driving current corresponding to different light-emitting brightness is small, avoiding low The problem of uneven and blurred display under grayscale display.

Description

technical field [0001] The present invention relates to the field of display technology, in particular to a light emitting device, a pixel circuit, a control method thereof and a corresponding device. Background technique [0002] With the advancement of display technology, Organic Light Emitting Diode (OLED) is one of the hotspots in the field of flat panel display research today, and more and more Active Matrix Organic Light Emitting Diode (AMOLED) display Panels have entered the market. Compared with traditional thin film transistor liquid crystal display panels (Thin Film Transistor Liquid Crystal Display, TFT LCD), AMOLED has faster response speed, higher contrast ratio and wider viewing angle. [0003] The traditional AMOLED is displayed by current control. Since the material of OLED itself is an organic material, the material will attenuate under long-term driving, resulting in a decrease in the brightness of the display panel and insufficient life; The drift of volt...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01L51/52H01L27/32G09G3/3233
CPCG09G3/3233G09G2320/043G09G2320/0233G09G2300/0804H10K50/813H10K50/822G09G3/3241G09G2300/0426G09G2320/045G09G2300/0809G09G2320/0626
Inventor 梁恒镇孙佳
Owner BOE TECH GRP CO LTD
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