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:
Oct. 06, 1998
Filed:
Sep. 09, 1997
Evan George Colgan, Chestnut Ridge, NY (US);
Robert Lee Melcher, Mt. Kisco, NY (US);
Teruhiro Nakasogi, Shiga-ken, JP;
Chandrasekhar Narayan, Hopewell Junction, NY (US);
James Lawrence Sanford, Chappaqua, NY (US);
Kei-Hsiung Yang, Katonah, NY (US);
IBM Corporation, Armonk, NY (US);
Abstract
A spatial light modulator designed to use a minimum area on the surface of a silicon substrate. This invention comprises a silicon substrate on a back plate with a glass cover that is used to seal liquid crystal between the glass cover and the silicon substrate. Most importantly, the glue seal formed to contain the liquid crystal material is between the cover glass plate and the Si substrate on only one side and the back plate on the remaining three sides. This structure allows a smaller semiconductor substrate to be used.