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:
Dec. 05, 1995
Filed:
Sep. 08, 1993
Applicant:
Inventors:
Michio Okajima, Neyagawa, JP;
Takao Tohda, Ikoma, JP;
Assignee:
Matsushita Electric Industrial Co., Ltd., Kadoma, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G03D / ;
U.S. Cl.
CPC ...
353122 ; 348786 ; 353 74 ;
Abstract
A novel type projection TV has a large size fluorescent screen bearing three kinds of dots or stripes of fluorescent material which emits visible lights of red, green and blue at excitation by UV-rays, which are emitted from UV-emitting CRTs' for red, green and blue pixel of image, respectively; and a mask having UV-light passing apertures or a lens array is disposed on light paths of the UV-rays to improve color purity,