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Buffered high frequency plasma display system

  • US 4,200,868 A
  • Filed: 04/03/1978
  • Issued: 04/29/1980
  • Est. Priority Date: 04/03/1978
  • Status: Expired due to Term
First Claim
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1. A refresh buffer plasma display system comprising in combination,a plasma display device comprising first and second glass plates,said plates being sealed under pressure and containing an ionizable gas,said first and second plates having first and second dielectric coated arrays of parallel conductors respectively formed thereon,said first and second conductor arrays being orthogonally disposed with respect to each other whereby the intersections of said orthogonal conductors define a matrix of gaseous discharge cells,a high frequency signal source having a repetition rate above the wall charge response time of said gaseous discharge cells to prevent the accumulation of wall charge on said cells during operation of said device,first and second drive-selection circuits associated with said first and second conductor arrays,means responsive to control signals applied to said first drive-selection circuits for selectively conditioning conductors on one of said arrays in response to data signals applied thereto, andmeans responsive to control signals applied to said second drive-selection circuits for selectively and sequentially scanning a plurality of conductors in said second array with said high frequency signal source and applying drive signals referenced to said high frequency signal source to selected lines whereby selected cells in said array are ionized by coincidence of said conditioning and said scanning signals.

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