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Light emission device and power supply therefor

A technology of power supply equipment and emission display, which is applied in the direction of light source, electric light source, identification device, etc., and can solve the problems of data voltage rising or falling, data voltage affecting panel brightness and contrast, etc.

Active Publication Date: 2005-11-30
SAMSUNG DISPLAY CO LTD
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  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

However, the data voltage may rise or fall when the external power supply suddenly drops or noise occurs, and the instability of the data voltage will affect the brightness and contrast of the panel

Method used

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  • Light emission device and power supply therefor
  • Light emission device and power supply therefor
  • Light emission device and power supply therefor

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Experimental program
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Embodiment Construction

[0033] now refer to image 3 , the OLED according to the embodiment of the present invention includes an OLED display panel 600 , a data driver 400 and a scan driver 500 .

[0034]The OLED display panel 600 includes data lines D1 to Dm arranged in columns, scan lines S1 to Sn arranged in rows, and n×m pixel circuits. The data lines D1 to Dm transmit data signals as image signals to the pixel circuits, and the scan lines S1 to Sn transmit selection signals to the pixel circuits. Here, a pixel circuit is formed on a single pixel region 610 defined by two adjacent data lines D1 to Dm and two adjacent scan lines S1 to Sn.

[0035] The scan driver 400 sequentially applies selection signals to the scan lines S1 to Sn, and the data driver 500 applies data voltages corresponding to image signals to the data lines D1 to Dm.

[0036] The scan driver 400 and / or the data driver 500 are coupled to the OLED display panel 600 . Alternatively, the scan driver 400 and / or the data driver 500...

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Abstract

A power supply device supplying power to a data driver of a light emission display device. The power supply device includes: an external reference voltage supply supplying an external reference voltage; a reference voltage generator converting external power into a regulated direct current (DC) reference voltage and outputs the regulated DC reference voltage when the external power is changed. A reference voltage selector selects one of the reference voltages output from the external reference voltage supply and the reference voltage generator and outputs a selected reference voltage. A voltage converter converts the regulated reference voltage output from the reference voltage selector into a plurality of internal DC power sources to be supplied to the drivers.

Description

technical field [0001] The present invention relates to a power supply device for a light-emitting display device, in particular, the present invention relates to a power supply device including a stabilizing circuit with a standard voltage to stably supply an integrated circuit of a data driver of a light-emitting display device data voltage. Background technique [0002] In general, an organic electroluminescent (hereinafter referred to as "EL") display device classifies phosphorous organic components into pixels arranged in a matrix format, and visualizes images by controlling the amount of current flowing to the phosphorous organic components. This organic EL display device is an advanced display with high response, low power consumption, and large viewing angle. The organic EL display is therefore expected to be a next-generation display. [0003] figure 1 A light emission mechanism of an organic EL display (hereinafter referred to alternatively as OLED) is shown. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G09G3/30G09G3/20H05B44/00
CPCY02B20/345G09G3/30G06F1/26H10K59/35G09G2330/028H03F2200/234
Inventor 朴星千李京洙
Owner SAMSUNG DISPLAY CO LTD
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