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Auto Pilot

IP.com Disclosure Number: IPCOM000078506D
Original Publication Date: 1973-Jan-01
Included in the Prior Art Database: 2005-Feb-26
Document File: 2 page(s) / 33K

Publishing Venue

IBM

Related People

Lamoureux, WR: AUTHOR

Abstract

In the operation of a plasma display panel, a quantity of charge particles and metastables must be initially available in the gas to initiate the discharge. One source of such charge particles is a light source provided by pilot cells disposed within the panel, this pilot cell facility utilizing auxiliary pairs of electrodes having an independent power supply. A method for providing the pilot cell facility, utilizing the conventional sustain voltage normally applied to all cells in a gas panel operation is constructed as follows.

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Auto Pilot

In the operation of a plasma display panel, a quantity of charge particles and metastables must be initially available in the gas to initiate the discharge. One source of such charge particles is a light source provided by pilot cells disposed within the panel, this pilot cell facility utilizing auxiliary pairs of electrodes having an independent power supply. A method for providing the pilot cell facility, utilizing the conventional sustain voltage normally applied to all cells in a gas panel operation is constructed as follows.

Referring to the drawing, a plasma display/storage panel 1 is shown in simplified form as consisting of a single 7 x 9 character matrix configuration, having horizontal lines H1 through H9 and vertical lines V1 through V7, although in practice much larger panels are contemplated. Horizontal and vertical sustain voltages are applied from sustain drivers 3 and 5 to maintain selected cells in their discharge condition, to provide the desired display capability, while individual cells are initially selected by applying write signals to the associated orthogonal conductors for the selected cells, in time coincidence with the sustain signals. A set of pilot lines comprising lines 7, 9 and 11, 13 are shown on the upper and lower portions of the display surface for ease of description, although they could be positioned in the vertical direction or both directions depending on the size of the display. Normally, the pilot lines are posi...