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:
May. 12, 1998
Filed:
Nov. 17, 1995
Hiroshi Komatsu, Suwa, JP;
Seiko Epson Corporation, Tokyo, JP;
Abstract
A fluorescent display apparatus performs a desired display by, in a vacuum state, irradiating its fluorescent layer with electrons discharged from electric-field electron discharge devices. The fluorescent layer is formed by a fluorescent substance and low-fusing-point glass, serves as an adhesive agent for the fluorescent substance. Paste obtained by mixing, for example, fluorescent substance powder, low-fusing-point glass powder and a binder is applied to a substrate or the like, followed by sintering at a temperature higher than the fusing point of the low-fusing-point glass. Solder is used to seal the space in the apparatus. An exhaust port is placed on a frame in a vacuum chamber while making the exhaust port face downwards. Then, spherical solder disposed between the frame and the foregoing exhaust port is heated and melted to be injected into the exhaust port. In order to raise the degree of vacuum, getter material is formed on the inner surface of the foregoing space to have a thin film shape. The getter material is irradiated with laser beams to be vaporized and activated after air in the foregoing space has been exhausted and the space has been sealed up.