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Pixel and organic light emitting display device using the same

一种发光显示、有机的技术，应用在静态指示器、仪器、电气元件等方向，能够解决阈值电压/迁移率不均匀性、不能显示具有均匀亮度的图像等问题

Inactive Publication Date: 2010-10-13
SAMSUNG DISPLAY CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Another problem of the conventional organic light emitting display device is that an image with uniform brightness cannot be displayed due to non-uniformity in threshold voltage / mobility of the driving transistor M2 included in each pixel 4.

Method used

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  • Pixel and organic light emitting display device using the same
  • Pixel and organic light emitting display device using the same
  • Pixel and organic light emitting display device using the same

Examples

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Embodiment Construction

[0030]In the following detailed description, only certain exemplary embodiments of the present invention have been shown and described, by way of illustration. As those skilled in the art will appreciate, the invention may be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Also, in the context of the present application, when an element is referred to as being "connected" or "coupled" to another element, the element may be directly connected or coupled to the other element, or there may be one or more elements between them. An intermediate element is indirectly connected or coupled to another element. Throughout the specification, the same reference numerals refer to the same elements.

[0031] Below, will refer to Figure 2 to Figure 8 Exemplary embodiments of the present invention are described in more detail for the purpose of enabling those of ordinary skill in the art to easily implement the present invention....

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Abstract

The invention provides a pixel and organic light emitting display device using the same. A display device displays an image having a substantially uniform brightness by compensating for variations of the threshold voltages of driving transistors and compensating for the deterioration of an organic light emitting diode. A pixel includes an organic light emitting diode, two transistors, a storage capacitor, and a compensation unit. A driving transistor supplies a current to an OLED corresponding to the voltage in the storage capacitor. The compensation unit controls a voltage of a gate electrode of the driving transistor corresponding to a deterioration of the organic light emitting diode, and couples one electrode of the driving transistor to the data line during a compensation period, during which a threshold voltage of the driving transistor is compensated.

Description

[0001] This application claims priority and benefit from Korean Patent Application No. 10-2009-0028438 filed with the Korean Intellectual Property Office on Apr. 2, 2009, the entire contents of which are hereby incorporated by reference. technical field [0002] The invention relates to a pixel and an organic light-emitting display device using the pixel. Background technique [0003] Recently, various flat panel display devices that are lighter in weight and smaller in volume than cathode ray tubes have been developed. Among flat panel display devices, there are liquid crystal display devices, field emission display devices, plasma display panels, organic light emitting display devices, and the like. [0004] Among flat panel display devices, organic light emitting display devices display images using organic light emitting diodes that generate light through recombination of electrons and holes. The organic light emitting display device is driven with low power consumption...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G09G3/32H01L27/32
CPCG09G2320/045G09G2320/0295G09G2300/0852G09G2320/043G09G2300/0809G09G3/3233G09G2300/0819G09G3/30G09G3/20
Inventor 金阳完崔雄植
Owner SAMSUNG DISPLAY CO LTD
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