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. 20, 2005
Filed:
May. 14, 2003
Applicants:
Chi-neng MO, Chungli, TW;
Pei-kuang Lin, Taipei Hsien, TW;
Yung-wei Yang, Taipei, TW;
Li-na Chang, Taoyuan Hsien, TW;
Inventors:
Chi-Neng Mo, Chungli, TW;
Pei-Kuang Lin, Taipei Hsien, TW;
Yung-Wei Yang, Taipei, TW;
Li-Na Chang, Taoyuan Hsien, TW;
Assignee:
Chunghwa Picture Tubes, Ltd., Taipei, TW;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01J029/50 ; H01J029/10 ;
U.S. Cl.
CPC ...
Abstract
The present invention is to provide an electron gun of a monochromic CRT comprising at least two electron emission sources (e.g., cathodes) for emitting beams having a small beam spot size and being adapted to impinge on the same spot of a screen of the monochromic CRT after having been focused by a focusing lens or common lens in the electron gun. As an end, the resolution, focusing quality and brightness of the screen of the monochromic CRT are improved.