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. 07, 1993
Filed:
Oct. 10, 1991
Applicant:
Inventor:
Takashi Sato, Nagano, JP;
Assignee:
Seiko Epson Corporation, Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G02F / ; G09G / ;
U.S. Cl.
CPC ...
359 57 ; 359 58 ; 359 74 ; 345 87 ;
Abstract
An active element on an insulating substrate of an electro-optical display device includes a layer of ferroelectric material as an active layer between two electrodes for each pixel in the display. The active device includes a first electrode formed on an insulating substrate, the ferroelectric layer covering the first electrode and the insulating substrate, and the second electrode disposed on the ferroelectric layer for overlapping a portion of the first electrode with the ferroelectric material therebetween. Preferably, the ferroelectric material is an organic ferroelectric material.