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.:

US 8164821 B1

PDF
Full Text
Expired
Date of Patent:
Apr. 24, 2012

Filed:

Feb. 22, 2008
Applicants:

Sauri Gudlavalleti, San Jose, CA (US);

Clarence Chui, San Jose, CA (US);

Inventors:

Sauri Gudlavalleti, San Jose, CA (US);

Clarence Chui, San Jose, CA (US);

Assignee:

QUALCOMM MEMS Technologies, Inc., San Diego, CA (US);

Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G02B 26/00 (2006.01);
U.S. Cl.
CPC ...
Abstract

An interferometric modulating device is provided with a thermal expansion balancing layer on a side of the movable flexible layer opposite the movable reflector such that when temperature changes the distance between the movable reflector and the optical stack does not change significantly, thereby leading to stable color. Additionally, an interferometric modulating device is provided with a stiffening layer between the movable flexible layer and the movable reflector and at least one hollow void exists on the surface where the movable reflector and the stiffening layer contact each other so that the movable reflector is more rigid to bending, thereby reducing the temperature sensitivity of the movable reflector.


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Gudlavalleti, Sauri. (2012). Microelectromechanical device with thermal expansion balancing layer or stiffening layer (U.S. Patent No. 8164821). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/8164821

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