Organic electroluminesence display panel and display device

An electroluminescent display and display panel technology, which is applied to static indicators, instruments, etc., can solve the problems of unfavorable high-resolution display panel production, increased drive chip area, and increased display panel wiring, so as to reduce the drive chip area , improve uniformity, and reduce the number of signal channels

Active Publication Date: 2015-07-29
BOE TECH GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, in the above-mentioned display panel, since each sub-pixel is connected with a sense line, the wiring in the display panel increases, which is not conducive to the manufacture

Method used

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  • Organic electroluminesence display panel and display device
  • Organic electroluminesence display panel and display device
  • Organic electroluminesence display panel and display device

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Embodiment Construction

[0036] In order to clearly illustrate the solutions of the embodiments of the present invention, the principles of the embodiments of the present invention will be firstly described below.

[0037] For the light-emitting device in each sub-pixel, its luminous efficiency decreases continuously with the aging of time. Different light-emitting devices, with the same initial luminous efficiency, have different degrees of reduction in luminous efficiency over time. However, after obtaining the aging conditions of each light emitting device, the initial grayscale value of the corresponding sub-pixel is compensated according to the aging conditions of the light emitting device in each sub-pixel, so that the actual luminous brightness of the light emitting device is the same as that of the light emitting device at Under the initial luminous efficiency, the luminous brightness is the same when the gray scale input to the sub-pixel is the above initial gray scale value.

[0038] For an ...

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Abstract

The invention discloses an organic electroluminesence display panel and a display device. A first preset voltage is written into a grid of a drive transistor through a data writing unit; drive current of the drive transistor is received through a detection unit; the drive current is computed through a detection line, and the grid voltage of the drive transistor is adjusted until the changing quantity of the voltage on the detection line becomes a preset value, so that the changing quantity of the drive voltage of a light emitting device is computed through computing the changing quantity of the grid voltage of the drive transistor, and thus the ageing condition corresponding to the light emitting device is obtained. An original gray value corresponding to each sub-pixel is compensated according to the ageing condition of the light emitting device in each sub-pixel, so that the uniformity of the brightness of the display panel is improved. Furthermore, a plurality of sub-pixels belonging to one pixel group in the display panel share one detection line, so that the wiring number in the display panel can be reduced, and thus the number of signal channels of a drive chip can be reduced, and the area of the drive chip is decreased to reduce the production cost.

Description

technical field [0001] The invention relates to the field of display technology, in particular to an organic electroluminescent display panel and a display device. Background technique [0002] Organic Light Emitting Diode (OLED), as a current-mode light-emitting device, has been increasingly used in high-performance displays. Traditional passive matrix organic light emitting diode (Passive Matrix OLED, PMOLED) displays require a shorter driving time of a single pixel as the display size increases, and thus need to increase transient current and increase power consumption. At the same time, the application of high current will cause the voltage drop on the ITO line to be too large, and the working voltage of the OLED will be too high, thereby reducing its efficiency. However, active matrix organic light-emitting diode (Active Matrix OLED, AMOLED) displays input OLED current through progressive scanning of switching tubes, which can well solve these problems. [0003] Among...

Claims

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Application Information

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IPC IPC(8): G09G3/32
CPCG09G3/3233G09G2300/0426G09G2300/0465G09G2300/0842G09G2320/0295G09G2300/0819G09G2320/0233G09G2320/045G09G3/3241G09G3/3291G09G2320/048G09G2330/12
Inventor 宋丹娜
Owner BOE TECH GRP CO LTD
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