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. 08, 1987
Filed:
Jul. 08, 1985
Masatoshi Wada, Osaka, JP;
Tetsuo Sakai, Tokyo, JP;
Okuno Chemical Industries Co. Ltd., , JP;
Nippon Hoso Kyokai, , JP;
Abstract
Light-emitting cells of a display device are individually provided with inner walls at least partially covered by white reflectors consisting of glass material containing transparent particles having different refractive index by 5 to 80% by weight, so that extremely high luminous efficiency similar as that of optical integrating sphere can be realized. Also, openings for emitting colored light can be applied with color filters while the front surface other than those openings of the display device is covered with light-absorbing black material, so that the reflectance for incident ambient light can be extremely reduced. According to the multiplexed effect of the above structure, remarkably high display contrast can be readily realized.