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. 24, 1990
Filed:
Aug. 16, 1989
Applicant:
Inventor:
Nicholas P Economou, Lexington, MA (US);
Assignee:
Micrion Corporation, Peabody, MA (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G01N / ;
U.S. Cl.
CPC ...
250572 ; 250563 ;
Abstract
Methods and apparatus for locating defects in liquid crystal display (LCD) panels include scanning the panel with a laser, detecting reflected, refracted, scattered or transmitted light, and processing signals representative of the detected light utilizing a digital processor, to detect discontinuities in the arrays of LCD elements on the panel.