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. 31, 2020
Filed:
Mar. 12, 2018
Interface Technology (Chengdu) Co., Ltd., Sichuan, CN;
Interface Optoelectronics (Shenzhen) Co., Ltd., Guangdong, CN;
General Interface Solution Limited, Miaoli County, TW;
Chih-Lin Liao, Guangdong, CN;
I-Chang Kuan, Guangdong, CN;
INTERFACE TECHNOLOGY (CHENGDU) CO., LTD., Sichuan, CN;
INTERFACE OPTOELECTRONICS (SHENZHEN) CO., LTD., Guangdong, CN;
GENERAL INTERFACE SOLUTION LIMITED, Miaoli County, TW;
Abstract
Ultrasonic wave sensing device includes a reading transistor, an ultrasonic wave transducer, and an input circuit. The reading transistor includes a first node, a second node, and a control node, wherein the first node receives a reference voltage, the second node couples with a reading node, and the control node couples with a first signal node. The ultrasonic wave transducer couples between the first signal node and a first input node, and receives a first control signal from the first input node. The input circuit couples between the first signal node and a second input node, and receives a second control signal from the second input node. The ultrasonic wave transducer generates an ultrasonic wave according to the first control signal and the second control signal, and outputs a sensing signal to the control node according to a reflected sound wave.