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Browse Prior Art Database

AC Self Scan Gas Panel With Memory

IP.com Disclosure Number: IPCOM000078624D
Original Publication Date: 1973-Feb-01
Included in the Prior Art Database: 2005-Feb-26
Document File: 3 page(s) / 66K

Publishing Venue

IBM

Related People

Criscimagna, TN: AUTHOR [+2]

Abstract

A gas panel which combines the driving economy of a scanning gas panel with the memory capability inherent in the conventional AC gas panel is constructed and operates as follows. Referring to Fig. 1, a gas panel is composed of glass substrates 3 and 5, on which conductor arrays 7 and 9 are formed and suitably insulated from direct contact with a gas by dielectric insulated members 11 and 13, respectively. The plates are sealed by conventional sealant techniques at their edge portions 15 to form the gas chamber 17. The conductor arrays 7 and 9 are substantially orthogonal with respect to each other, each array being composed of a plurality of parallel conductors.

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AC Self Scan Gas Panel With Memory

A gas panel which combines the driving economy of a scanning gas panel with the memory capability inherent in the conventional AC gas panel is constructed and operates as follows. Referring to Fig. 1, a gas panel is composed of glass substrates 3 and 5, on which conductor arrays 7 and 9 are formed and suitably insulated from direct contact with a gas by dielectric insulated members 11 and 13, respectively. The plates are sealed by conventional sealant techniques at their edge portions 15 to form the gas chamber 17. The conductor arrays 7 and 9 are substantially orthogonal with respect to each other, each array being composed of a plurality of parallel conductors.

Referring to Fig. 2, the operation of the panel is substantially different than the operation of the conventional plasma display panel. In the conventional plasma display panel, writing is accomplished by applying a signal of sufficient amplitude to a pair of orthogonal conductors to deionize the gas, the resulting discharge between these conductors identifying a gas cell and producing a spot of light for display purposes.

Logic circuitry identified as horizontal selection circuits 21 are used to select which of the horizontal lines the horizontal drive signal on line 23 will be applied to, two of the horizontal lines 25 and 27 identified as lines 1 and M being shown in the drawing.

Panel operation is initiated by applying a write zero signal to vertical line 29, which when combined with a signal on reference line 31 transfers a charge from the write zero drive line 29 to reference line 31. The driving signals shown as phi 1 drive, 02 drive and 03 drive are AC signals displaced in phase by 120 degrees which are sequentially applied to all 1, 2 and 3 lines, as indicated in the drawing. The 1 drive li...