Electric lamp and discharge devices – With gas or vapor – Three or more electrode discharge device
Patent
1997-02-21
1999-11-23
O'Shea, Sandra
Electric lamp and discharge devices
With gas or vapor
Three or more electrode discharge device
313622, 345 60, 345 87, H01J 1749
Patent
active
059906197
ABSTRACT:
A plasma addressed liquid crystal display system (10) includes improved electrode structures (90, 100, 130) that are nonuniform parallel to their surfaces and may also be nonuniform perpendicular to their major surfaces. The nonuniformities include surface nonuniformities (92, 94), bulk nonuniformities (108, 110, 112, 112), and geometric nonuniformities (132, 134). Electrodes having such nonuniformities provide localized sites of preferential and nonpreferential surface and bulk properties of the electrodes, which, in turn, provide improved and locally tailored plasma discharge characteristics. PALC displays having the nonuniform electrodes have improved quality because of reduced firing voltages in one plasma channel region compared to another, reduced sputtering damage, reduced total current between electrodes, decreased discharge initiation time, and decreased ionized gas decay time.
REFERENCES:
patent: 4896149 (1990-01-01), Buzak et al.
patent: 5453660 (1995-09-01), Martin et al.
patent: 5783906 (1998-07-01), Moore et al.
Buzak Thomas S.
Ilcisin Kevin J.
Martin Paul C.
Gerike Matthew J.
O'shea Sandra
Preiss Richard B.
Tektronix Inc.
Winkelman John D.
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