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:
Jul. 31, 1990
Filed:
Mar. 11, 1988
Kazuo Taguchi, Tokyo, JP;
Moriaki Fuyama, Hitachi, JP;
Kenichi Onisawa, Hitachi, JP;
Katsumi Tamura, Hitachi, JP;
Yoshimasa Ono, Mito, JP;
Yoshio Abe, Hitachi, JP;
Takahiro Nakayama, Hitachi, JP;
Akira Sato, Takahagi, JP;
Kenichi Hashimoto, Katsuta, JP;
Hitachi, Ltd., Tokyo, JP;
Abstract
In an electroluminescence element including light emitting layers emitting light by applying AC voltages thereto the light emitting layer consists of a light emitting layer emitting red light and a light emitting layer emitting bluish green light and a blue filter transmitting blue light and a green filter transmitting green light are disposed on the light emitting surface side of the bluish green light emitting layer. In this way it is possible to take out red, blue and green lights at an approximately equal brightness level and to realize full color.