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:
Nov. 20, 2007
Filed:
Aug. 31, 2004
Yoshie Kodera, Chigasaki, JP;
Masakazu Sagawa, Inagi, JP;
Toshiaki Kusunoki, Tokorozawa, JP;
Tetsu Ohishi, Hiratsuka, JP;
Yuichi Sawai, Hitachi, JP;
Yoshie Kodera, Chigasaki, JP;
Masakazu Sagawa, Inagi, JP;
Toshiaki Kusunoki, Tokorozawa, JP;
Tetsu Ohishi, Hiratsuka, JP;
Yuichi Sawai, Hitachi, JP;
Hitachi, Ltd., Tokyo, JP;
Abstract
A flat type display device is provided which is capable of accurately and easily assembling a spacer when arranging the spacer while reducing the danger of damaging the metal back. In the display device, a plurality of fine holes each having a fluorescent materials are formed on a light transparency substrate and a metal sheet is arranged by a black oxide film formed on the surface of the light transparency substrate side so as to obtain a light absorbing layer. A plurality of concave portions are provided on a surface of the metal sheet of the rear substrate side. A metal back having an openings corresponding to predetermined areas containing each of the concave portions is superimposed on the metal sheet, thereby constituting an acceleration electrode of two-layer structure. The spacer is inserted into the concave portion on the metal sheet exposed in the opening of the metal back.