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:
Sep. 02, 2003
Filed:
Feb. 07, 2001
Kiyoshi Nishimura, Yokosuka, JP;
Masuo Shibuya, Yokosuka, JP;
Yuichiro Takahara, Yokosuka, JP;
Kouichi Honda, Yokosuka, JP;
Toshiba Lighting & Technology Corporation, Tokyo, JP;
Abstract
An internal electrode ( ) is formed on the inner wall surface of a tube-shaped light emitting body ( ) along the longitudinal direction of the light emitting tube ( ). An external electrode ( ) is formed on the exterior surface of the light emitting tube ( ) along the longitudinal direction of the light emitting tube ( ). An electric discharge starts between the internal electrode ( ) and the external electrode ( ) by applying a high-frequency voltage therebetween. Only one tube wall of the light emitting tube ( ) lies between the internal electrode ( ) and the external electrode ( ), and the internal electrode ( ) and the external electrode ( ) can be brought close to each other. The limitation of an electric current running between the internal electrode ( ) and the external electrode ( ) can be reduced, and a starting voltage or a discharge-maintaining voltage can be lowered. In addition, the internal electrode ( ) can be easily processed with high accuracy.