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:
Mar. 07, 2000
Filed:
Apr. 15, 1998
Applicant:
Inventor:
Guillermo L Toro-Lira, Sunnyvale, CA (US);
Assignee:
Other;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01L / ;
U.S. Cl.
CPC ...
445 63 ;
Abstract
A system for testing field effect flat panel displays (FEFPDs) disposes the FEFPD in a vacuum and measures electron stream emission from selectively activated pixels of the FEFPD. Selective activation is effected using a linear stage mechanism associated with each contact pad of the FEFPD. Each linear stage mechanism comprises an electrically conducting ball bearing which is rolled over the associated contact pad to thereby complete an electrical circuit between an activation signal source and the electrodes of the pixel under test.