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Apparatus and method for automatically adjusting reset ramp waveform of plasma display panel

A ramp waveform and plasma technology, applied in the field of gradient devices, can solve the problems of difficult image adjustment, complex image adjustment process, etc.

Inactive Publication Date: 2003-10-22
SAMSUNG ELECTRONICS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In this way, there is a problem that the image adjustment process is complicated and it is difficult to perform accurate image adjustment in mass production,

Method used

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  • Apparatus and method for automatically adjusting reset ramp waveform of plasma display panel
  • Apparatus and method for automatically adjusting reset ramp waveform of plasma display panel
  • Apparatus and method for automatically adjusting reset ramp waveform of plasma display panel

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Embodiment Construction

[0028] Such as Figure 5 As shown in , according to the present invention, the device for automatically adjusting the reset ramp waveform of a plasma display panel includes: a plasma display panel 510, a sensor 520, a control circuit 530, an X rising ramp waveform generating circuit 540, and a scan electrode driver Circuit 550.

[0029] The control circuit 530 includes: an analog-to-digital converter (ADC) 530A; digital-to-analog converters 530B, 530C, and 530D; a control unit 530E and a look-up table 530F. The X rising ramp waveform generation unit 540 includes: a gate driver 540A, a regulator 540B, a push-pull buffer 540C, a switch circuit 540D and an optocoupler 540E.

[0030] The switch circuit 540D includes: resistors Rg and Rf, capacitor Cgd, diode D2, and MOSFET switch X31, and has the function of converting a square wave signal into a ramp waveform signal.

[0031] The lookup table 530F is designed to match image information related to gradient adjustment of the reset ...

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Abstract

A look up table (530F) stores digital image information related to gradient adjustment, and corresponding reset ramp waveform gradient reference data. A controller (530) digitizes sensed image information, and converts corresponding reference data read from the table, into analog signal. A generating circuit (540) changes gradient of the reset ramp waveform according to the level of the signal. Independent claims are included for the following: (1) an apparatus for driving a plasma display panel; and (2) method for controlling driving of plasma display.

Description

technical field [0001] The present invention relates to a device and method for driving a plasma display panel, in particular, to a device and method for automatically adjusting the gradient of a reset ramp waveform of a plasma display panel, so as to automatically adjust the The generated ramp waveform and the reset period are used for offset adjustment between circuit components and between panels. Background technique [0002] A plasma display panel (PDP) is generally considered to be a next-generation flat display device that expresses characters and images using plasma generated by gas discharge. In the plasma display panel, hundreds of thousands to several million or more pixels are arranged in a matrix according to the size of the plasma display panel. [0003] Such as figure 1 As shown in , a conventional plasma display panel driving circuit includes: a scan electrode driving board 110 , a plasma display panel 120 , a common electrode driving board 130 , and an add...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G09G3/292G09G3/296
CPCG09G3/2927G09G3/296G09G2310/066G09G2320/0693
Inventor 卢政煜李尚勋金惠廷
Owner SAMSUNG ELECTRONICS CO LTD