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:
Jun. 16, 1998
Filed:
Jun. 19, 1996
Applicant:
Inventor:
Koji Onodaka, Mobara, JP;
Assignee:
Futaba Denshi Kogyo K.K., Mobara, JP;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01J / ; H01J / ;
U.S. Cl.
CPC ...
313495 ; 313309 ; 313497 ; 313336 ;
Abstract
To decrease the number of a cathode power source for operating a portion between the cathode and the gate, a structure is employed in which three gate lines for red, green and blue filters are provided, the filter being arranged such that the red optical filter has a lowest radiant efficiency, the blue optical filter has a secondly low radiant efficiency and the green optical filter has a highest radiant efficiency. In inverse proportion to the radiant efficiencies, the numbers of emitters in field-emission arrays formed in the three gate lines are determined.