Pixel, pixel circuit and organic light emitting display including the same

A technology of light-emitting displays and pixel circuits, applied in electroluminescent light sources, circuits, electric light sources, etc., can solve the problems of easy change, uneven picture quality, etc., and achieve the effect of uniform capacitance ratio

Active Publication Date: 2011-09-21
SAMSUNG DISPLAY CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, the capacitance ratio of the storage capacitor and the boost capacitor is easily changed
Therefore, the picture quality will become uneven

Method used

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  • Pixel, pixel circuit and organic light emitting display including the same
  • Pixel, pixel circuit and organic light emitting display including the same
  • Pixel, pixel circuit and organic light emitting display including the same

Examples

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Embodiment Construction

[0026] Reference will now be made in detail to the present embodiments of the invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to like elements throughout. The embodiments are described below to explain the present invention by referring to the figures.

[0027] figure 1 is a block diagram schematically showing the structure of an organic light emitting display according to an embodiment of the present invention. refer to figure 1 , the organic light emitting display includes a scan driver 110 , an emission control driver 120 , a data driver 130 and a pixel unit 140 .

[0028] The scan driver 110 sequentially supplies scan signals to the scan lines S1 to Sn to correspond to control signals supplied from an external control circuit (not shown), such as a timing controller. Then, the pixels 150 are selected using the scan signal to sequentially receive data signals from the data lines D1 to Dm.

[0029] The emis...

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PUM

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Abstract

The invention discloses a pixel, a pixel circuit and an organic light emitting display including the same. The pixel capable includes an organic light emitting diode (OLED) coupled between first and second power sources, and a pixel circuit coupled between the first power source and the OLED to control driving current supplied to the OLED. The pixel circuit includes a first transistor with a first electrode coupled to a data line, a second electrode coupled to a first node, and a gate electrode coupled to a current scan line, a second transistor with a first electrode coupled to the first power source via the first node, a second electrode coupled to the OLED, and a gate electrode coupled to a second node, a first capacitor coupled between the first power source and the second node, and a second capacitor coupled between the second node and the current scan line. An aperture is formed in at least one electrode of the two electrodes of the first capacitor.

Description

[0001] This application claims the benefit of Korean Patent Application No. 10-2010-0023343 filed with the Korean Intellectual Property Office on March 16, 2010, the contents of which are hereby incorporated by reference. technical field [0002] Aspects of the present invention relate to a pixel and an organic light emitting display including the pixel, and more particularly, to a pixel capable of displaying an image with uniform picture quality and an organic light emitting display including the pixel. Background technique [0003] Organic light emitting displays display images using organic light emitting diodes (OLEDs), which are self-emissive elements. Organic light emitting displays can be made thin and have high brightness and color purity. Therefore, organic light emitting displays are attracting attention as next-generation displays. [0004] A pixel of an organic light emitting display includes an OLED and a pixel circuit. The pixel circuit supplies a driving cur...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G09G3/32H01L27/32H05B44/00
CPCG09G2300/0852G09G2300/0814G09G2320/043G09G2310/0251H01L27/3265G09G3/3233G09G2300/0819H10K59/1216H10K59/121
Inventor 裴汉成白智媛郭源奎
Owner SAMSUNG DISPLAY CO LTD
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