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:
Mar. 14, 1989
Filed:
Apr. 02, 1986
Hiroshi Miyama, Yokohama, JP;
Yoshikazu Kawauchi, Kawasaki, JP;
Kaoru Tomii, Isehara, JP;
Jun Nishida, Tokyo, JP;
Matsushita Electric Industrial Co., Ltd., Kadoma, JP;
Abstract
In a flat type cathode ray tube having one or plural parallel (vertical) line cathodes (10) and a plurality of scanning electrodes (12) consisting of insulated parallel (horizontal) metal strips, which are to be impressed with respective scanning pulses (FIG. 6, FIG. 21) to make vertical scanning of electron beams from the line cathodes: undesirable vibrations of the line cathode (10) are suppressed by touching wire-shaped dampers (28, 38A, 38B, 48, 64, 65) on the line cathode (10), and by selecting the frequency of the scanning pulses higher than natural vibration frequency of the line cathode (10).