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:
Mar. 03, 1998
Filed:
Nov. 19, 1996
Applicant:
Inventors:
Min-ho Kim, Suwon, KR;
Bong-mo Jeong, Seoul, KR;
Jae-ho Shim, Seoul, KR;
Wan-woo Park, Yongin, KR;
Deuk-yong Yang, Suwon, KR;
Assignee:
Samsung Display Devices Co., Ltd., Kyungki-do, KR;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C09K / ;
U.S. Cl.
CPC ...
25230136 ; 2523 / ; 428403 ; 427212 ; 427220 ;
Abstract
A phosphor for a color cathode ray tube (CRT) characterized in which the phosphor is coated with a charge regulator such as nigrosine or quaternary ammonium salt and manufacturing method thereof are provided. The phosphor according to the present invention can be positively charged to a level suitable for forming a fluorescent screen by an electrophotographic process.