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:
Jan. 16, 1992
Applicant:
Inventors:
Robert P Wenz, Cottage Grove, MN (US);
Michael F Weber, Shoreview, MN (US);
Timothy L Hoopman, River Falls, WI (US);
Assignee:
Minnesota Mining and Manufacturing Company, St. Paul, MN (US);
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G02F / ;
U.S. Cl.
CPC ...
359 81 ; 359 82 ;
Abstract
Substrate elements for making liquid crystal display devices are disclosed as well as display devices using such elements. The substrate elements are polymeric sheets which include spacing elements physically and chemically integral with the substrate so that when mated with a second substrate element, a precise, uniform spacing can be maintained between substrates. This allows large area displays to be fabricated which will provide uniform display properties throughout the display area.