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Positive type organic light emitting diode display

A technology for light-emitting diodes and displays, applied in static indicators, electroluminescent light sources, instruments, etc., can solve the problems of small area of ​​organic light-emitting bodies and color shift, and achieve the effect of increasing the aperture ratio and avoiding color shift.

Active Publication Date: 2008-02-20
AU OPTRONICS CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

From the figure, we can find that the single-color organic light-emitting body occupies a small area, and generally using such pixels, the aperture ratio of a single color is often lower than 10%, and it is easy to cause color shift.

Method used

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  • Positive type organic light emitting diode display
  • Positive type organic light emitting diode display
  • Positive type organic light emitting diode display

Examples

Experimental program
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Embodiment Construction

[0040] FIG. 2 is a schematic diagram of a pixel formed by using stacked OLEDs. The organic red LED 23 , the organic green LED 25 and the organic blue LED 27 form a stacked structure. In addition to the stacked structure, the pixel 21 also includes a first thin film transistor 12 (hereinafter referred to as TFT1 ), a second thin film transistor 14 (hereinafter referred to as TFT2 ), and a third thin film transistor 16 (hereinafter referred to as TFT3 ). Transistors TFT1, TFT2 and TFT3 respectively drive the organic red light emitting diode 23, the organic green light emitting diode 25 and the organic blue light emitting diode 27, and can be connected with the organic red light emitting diode 23, the organic green light emitting diode 25 and the organic blue light emitting diode respectively. 27 are located on the same floor. The use of stacked organic light emitting diodes can greatly increase the aperture ratio of pixels and avoid color shift.

[0041] FIG. 3 is a schematic ...

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PUM

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Abstract

The utility model relates to an active organic light emitting diode display, comprising an image elements array which is provided with a plurality of image elements, wherein every single image elements comprises a luminescence device, a driving device and a selector unit. The luminescence device comprises a first organic light emitting diode, a second organic light emitting diode and a third organic light emitting diode, wherein the organic light emitting diode is formed in the image elements in a superpositioned mode. The drive device is in coupling connection with the voltage source, receiving digital signal and driving the luminescence device according to the displayed data. A unit is chosen and the corresponding organic light emitting diode is chosen and connected according to a control signal. The utility model has the advantages that the opening ratio of the image elements is greatly improved and the color cast can be avoided.

Description

technical field [0001] The invention relates to a display, in particular to an active organic light emitting diode display. Background technique [0002] Organic Light Emitting Diode (OLED) has self-illumination, low driving voltage, power saving, fast response rate, high brightness, high contrast, wide viewing angle, full color, light and thin, and wide operating temperature range (compared to Liquid crystal display) and other good characteristics, so it is currently recognized as one of the most promising emerging flat-panel display technologies. Most of the traditional OLED pixels have a bottom-emitting structure, and often thin-film transistors (TFTs) and data lines (data lines) will become obstacles that block the passage of light, making the aperture ratio of OLED pixels too low; if the display brightness reaches a predetermined value , then a larger voltage must be applied to the OLED pixel, which will shorten the lifetime of the OLED pixel. FIG. 1 is a schematic di...

Claims

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Application Information

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IPC IPC(8): G09G3/32G09G3/30H05B33/08H05B33/14G09G3/3225H05B44/00
CPCY02B20/346Y02B20/30
Inventor 张孟祥陈纪文
Owner AU OPTRONICS CORP
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