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:
Feb. 24, 2004
Filed:
Jun. 27, 2001
Mitsuhiro Ishizuka, Tokyo, JP;
NEC Corporation, Tokyo, JP;
Abstract
By inserting a pre-discharge erasing voltage holding time of more than 5 microseconds after a potential change of a pre-discharge erasing pulse, and by inserting a pre-sustaining erasing period between the scanning period and the sustaining period, the residual wall charge is made constant regardless of the discharge characteristics of each cell and it becomes possible to reduce the erroneous discharge without eliminating the effective voltage distribution due to superposing the residual wall charge and the scanning voltage. By increasing the scanning pulse voltage due to the finally attained voltage of the pre-discharge erasing pulse and by superposing the wall charge corresponding to the potential difference of the finally attained voltage of the pre-discharge erasing pulse and the scanning pulse voltage, on the scanning pulse voltage, it is possible to reduce the data voltage and the scanning voltage.