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Apparatus and method for drving electroluminescent panel

A technology that drives equipment, electroluminescence, and is used in instruments, static indicators, etc.

Inactive Publication Date: 2009-05-06
LG DISPLAY CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0013] However, since a very small current is used as the driving current Id, it is difficult for conventional EL panel driving devices to change the driving current Id into a corresponding voltage by charging and discharging the capacitor Cst through the driving current Id within a limited scan time of the gate line.

Method used

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  • Apparatus and method for drving electroluminescent panel
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  • Apparatus and method for drving electroluminescent panel

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Embodiment Construction

[0030] Figure 4 The structure of a current-driven EL panel according to one embodiment of the present invention is schematically shown.

[0031] see Figure 4 , The EL panel driving device includes: an EL panel 20 ; a data driver 24 and a gate driver 22 . The data driver includes: a precharger 26 for precharging data input from the outside; and a data driving integrated circuit (IC) 28 for normally supplying pixel signals through the data lines DL1 to DLn.

[0032] as figure 2 Like the conventional EL panel shown, the EL panel of the present invention includes: gate lines GL1 to GLm and data lines DL1 to DLn arranged on a glass substrate in a manner to cross each other; Pixels (PE) 30 are arranged in the intersecting area between DLn. Each picture element 30 is driven when the gate signal on the gate lines GL1 to GLm is activated, thereby generating light corresponding to the amount of the pixel signal on the data line DL.

[0033] In order to drive this EL panel, the g...

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Abstract

An apparatus and method for driving an electro-luminescence panel wherein pixels in a current driving type electrode-luminescence panel are pre-charged to change a storage voltage of the pixel into the corresponding voltage within a limited scanning time. In the apparatus, a plurality of electro-luminescence cells are arranged at crossings between gate lines and data lines. A gate driver is connected to the gate lines to sequentially drive the gate lines. A data driver is connected to the data lines to apply pixel signals, via the data lines, to the electro-luminescence cells. A pre-charger is provided within the data driver to pre-charge a current into the data lines before the pixel signals are applied via the data lines.

Description

[0001] This application claims the benefit of Korean Patent Application No. 2001-51569 filed on Aug. 25, 2001, which is hereby incorporated by reference in its entirety. technical field [0002] The present invention relates to electroluminescent displays (ELDs), and more particularly to an apparatus and method for driving an electroluminescent panel, wherein pixels located in the gate lines of a current-driven electroluminescent panel are pre-charged so that the pixel's The stored voltage becomes the corresponding voltage. Background technique [0003] Recently, various light-weight and small-sized flat panel display devices capable of eliminating disadvantages of cathode ray tubes (CRTs) have been developed in the industry. Such flat panel display devices include liquid crystal displays (LCDs), field emission displays (FEDs), plasma display panels (PDPs), electroluminescence (EL) panels, and the like. [0004] Active research has been conducted in the industry to improve ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G09G3/30G02F1/133G09G3/32
CPCG09G2300/0842G09G2310/0251G09G3/3241G09G3/3283G09G3/30
Inventor 金昌渊李汉相李明镐
Owner LG DISPLAY CO LTD
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