Shin Sung C&t Co., Ltd.

Keun Jung Youn

Yong Kook Kim

Ci Moo Song

Jae Hyun Ahn

Kyu Dong Jung

Sang Woo Lee

Muhammad Ali Shah

Provided is a MEMS acoustic sensor including a substrate and a cavity, a back plate supported on the substrate and including a plurality of through-holes, at least one anchor projecting from the back plate toward the substrate, and a diaphragm supported by the at least one anchor and deformed by a sound wave introducing from the outside through the cavity, wherein no part of the deformed diaphragm comes into contact with the substrate.

MEMS acoustic sensor

Fingerprint sensing technology of a fingerprint sensor for authenticating whether a fingerprint of a subject is forged or falsified by using a waveform reflected from the subject, such as an ultrasonic wave. The fingerprint authentication apparatus includes a fingerprint sensor configured to apply a wave signal to a subject and receive a wave signal reflected from the subject, a local waveform detector configured to detect local waveforms by dividing the received wave signal by a reception time, and a forgery detection unit configured to count the number of local waveforms and detect whether a fingerprint provided from the subject is forged or not based on the counted number of local waveforms.

Method and apparatus for authenticating fingerprints using reflected wave

Growing community of inventors

Incheon, South Korea

Keun Jung Youn