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. 07, 1989
Filed:
May. 23, 1988
Applicant:
Inventors:
Soichiro Ogawa, Tokyo, JP;
Toshihiko Sano, Ome, JP;
Assignee:
Hitachi, Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01J / ; H01J / ; G02F / ;
U.S. Cl.
CPC ...
313493 ; 313117 ; 313635 ; 350345 ;
Abstract
Disclosed is a fluorescent lamp arrangement for uniformly illuminating a display panel wherein a fluorescent lamp having a glass tube is provided with electrodes at opposite sides thereof, a fluorescent layer is formed over an inner surface of the glass tube, and mercury and a rare gas are sealed in the glass tube; and a light-shading patterned layer is formed along a surface of the glass tube so as to make luminance on a display panel substantially uniform when the fluorescent lamp and the display panel are parallelly disposed to a plane which includes a longitudinal axis of the glass tube.