Browse Prior Art Database

Gas Panel Delay Line Drive

IP.com Disclosure Number: IPCOM000045487D
Original Publication Date: 1983-Mar-01
Included in the Prior Art Database: 2005-Feb-07
Document File: 1 page(s) / 12K

Publishing Venue

IBM

Related People

Baldauf, DR: AUTHOR [+2]

Abstract

In conventional plasma panel displays, the conductors which define the cell locations on the glass plates are generally made of chrome copper chrome, in which the copper functions as the conductor, while the chrome layers provide adherence to the glass and protect the copper from attack by the glass during fabrication. As described in (* R. Altimeri, F. J. Campagna, D. Parker, and N. Poley, "Anodized Aluminum Plated Copper Gas Panel Conductors," IBM Technical Disclosure Bulletin 24, 5193 (March 1982), it has also been proposed to use discrete conductors bonded to the glass plates.

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Gas Panel Delay Line Drive

In conventional plasma panel displays, the conductors which define the cell locations on the glass plates are generally made of chrome copper chrome, in which the copper functions as the conductor, while the chrome layers provide adherence to the glass and protect the copper from attack by the glass during fabrication. As described in (* R. Altimeri, F. J. Campagna, D. Parker, and N. Poley, "Anodized Aluminum Plated Copper Gas Panel Conductors," IBM Technical Disclosure Bulletin 24, 5193 (March 1982), it has also been proposed to use discrete conductors bonded to the glass plates.

This publication proposes to design the gas panel matrix lines as delay lines consisting of a distributed RC network with cells fabricated from a highly-resistive transparent conductive material which provides small cell size and thus low cell current for a given light output for a large size high resolution plasma display device. The delay line used is a conventional RC network in which the resistance of the matrix lines in conjunction with the capacitance of the cells causes the firing time of each successive cell to be delayed slightly from the previous cell, thereby spreading the cell firing currents over time. The drive lines are driven with a conventional high voltage square-wave sustain waveform.

The combined lower peak currents due to the transparent conductors reduced cell spreading and time delays causing the resulting voltage drops and associated wa...