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Organic light emitting display

A display and organic technology, applied in the field of manufacturing the organic light-emitting display, can solve problems such as threshold voltage changes

Active Publication Date: 2006-02-15
LG DISPLAY CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This problem is caused by variations in the threshold voltage of the individual drive transistors in the non-uniformly crystallized substrate of the display

Method used

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  • Organic light emitting display
  • Organic light emitting display
  • Organic light emitting display

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Embodiment Construction

[0041] Preferred embodiments of the present invention will now be described in detail, examples of which are shown in the accompanying drawings. Wherever possible, the same reference numbers will be used throughout the drawings to refer to the same or like parts.

[0042] Figure 4A and 4B They are respectively the circuit diagram and driving waveform of the unit pixel in the AM organic light emitting display screen according to the first embodiment of the present invention. Although only one unit pixel is shown in these two drawings and subsequent drawings, it should be understood that the organic light emitting diode display device includes an OLED panel including a plurality of such unit pixels formed in a matrix structure, with There are multiple signal lines properly set up as described below.

[0043] refer to Figure 4A and 4B , in the unit pixel of the organic light emitting display screen according to the first embodiment of the present invention, the first transis...

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Abstract

The present invention provides an organic light emitting display screen capable of preventing deterioration of image quality, and a method of manufacturing the organic light emitting display screen. A unit pixel for such an organic light emitting display includes: a first transistor connected to a data line and having a first voltage threshold; a second transistor connected to the first and third transistors and controlled by a second selection signal a third transistor, which is connected to the first transistor and controlled by the first selection signal; and a fourth transistor, which is connected to the third transistor and has a fourth voltage threshold, so that the first transistor can be controlled independently of the fourth voltage threshold drive current for four transistors.

Description

technical field [0001] The present invention relates to an organic light emitting display, and more particularly, to an organic light emitting display capable of preventing deterioration of image quality, and a method of manufacturing the organic light emitting display. Background technique [0002] An organic light-emitting display is a self-luminous display that emits light by electrically exciting fluorescent organic compounds and displays images by driving N×M organic light-emitting diodes (OLEDs). [0003] There are two driving methods used in organic light emitting displays, namely, a passive matrix (PM) method and an active matrix (AM) method. In the case of the passive matrix method, an anode and a cathode are formed perpendicularly to each other and a display screen is driven through selection lines. In the case of the active matrix method, transistors and capacitors are connected to pixel electrodes formed of indium tin oxide (ITO), and the display is driven by ma...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H05B33/08H05B33/12G09G3/30H05B44/00
CPCG09G2300/0842G09G2300/0861G09G2310/0251G09G3/3233G09G2300/0819H05B33/0896H05B45/60Y02B20/30G09G3/30
Inventor 许晋
Owner LG DISPLAY CO LTD
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