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. 23, 2003
Filed:
Jan. 02, 2001
Applicant:
Inventor:
Sung-Hun Ji, Pusan, KR;
Assignee:
Samsung SDI Co., Ltd., Suwon, KR;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01J 2/980 ;
U.S. Cl.
CPC ...
H01J 2/980 ;
Abstract
A color cathode-ray tube is provided for easily detaching a mask assembly when manufacturing a phosphor screen by expanding the gap (Q-value) between the shadow mask and a phosphor screen by a number times while maintaing the resolution degree. The cathode-ray tube includes a phosphor screen formed on the inner surface of a panel and repeatedly forms a plurality of red, green and blue phosphor stripes, an electron gun emitting three electron beams toward the phosphor screen, and a shadow mask arranged in front of the phosphor screen facing the electron gun and forming a plurality of beam passage apertures for separating the electron beams.