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:
Jun. 04, 2013
Filed:
Dec. 02, 2011
Applicants:
Steven Adler, Saratoga, CA (US);
Peter Johnson, Sunnyvale, CA (US);
Ira Oaktree Wygant, Palo Alto, CA (US);
Inventors:
Steven Adler, Saratoga, CA (US);
Peter Johnson, Sunnyvale, CA (US);
Ira Oaktree Wygant, Palo Alto, CA (US);
Assignee:
Texas Instruments Incorporated, Dallas, TX (US);
Primary Examiner:
Int. Cl.
CPC ...
H01L 21/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
A capacitive micromachined ultrasonic transducer (CMUT), which has a conductive structure that can vibrate over a cavity, utilizes a thick oxide layer to substantially increase the volume of the cavity which, in turn, allows the CMUT to receive and transmit low frequency ultrasonic waves. In addition, the CMUT can include a back side bond pad structure that eliminates the need for and cost of one patterned photoresist layer.