The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jan. 06, 1998
Filed:
May. 13, 1996
Jun Iwama, Kanagawa, JP;
Sony Corporation, Tokyo, JP;
Abstract
To optimize a discharge current flowing in each of discharge channels for performing linear sequential scan of a display cell, a panel 0 has a laminated structure in which a display cell having signal electrodes D arranged in columns and a plasma cell having discharge channels (K,A) arranged in rows are laminated to each other. Pixels 1 are defined in a matrix at positions where the signal electrodes D cross the discharge channels (K,A). A vertical drive circuit 2 repeatedly performs field scans in each of which pixels 1 are selected in a row-sequential manner by sequentially applying drive pulses each to the signal channels (K,A) for generating plasma discharges. A horizontal drive circuit 3 applies image signals each to the signal electrodes D, to write the image signals in the selected pixels 1. The vertical drive circuit 2 includes a detecting resistance 14 for detecting a discharge state of each discharge channel (K,A) for each field scan. The vertical drive circuit 2 also includes a control means having a comparator 17, a memory 19, a flip-flop 13 and the like for controlling, on the basis of a detected result obtained in the previous field scan, a width of each of the drive pulses Q1 to Qn to be applied in the next field scan for each discharge channel.