Samsung Electronics Co., Ltd.

Hayoung Ko

Kwanhee Lee

Jongsung Lee

Daeyoung Chung

Minchul Lee

Sanghyun Cho

Kwanghyuk Bae

Chulwoong Lee

Heechang Hwang

Wonho Cho

Muncheon Kang

Duckchan Seo

A method of calibrating errors in a time-of-flight (ToF) sensor includes illuminating a test object with a transmission light that is modulated based on a modulation signal; generating, using a buffer chain circuit, a plurality of demodulation signals having different local delay phases; providing a plurality of measured phase differences by providing the plurality of demodulation signals to a plurality of pixel groups included in a ToF sensor to sample a reception light reflected from the test object based on the plurality of demodulation signals; determining a wiggling error based on the plurality of measured phase differences, the wiggling error depending on a phase difference between the transmission light and the reception light; and calibrating a measured distance from the ToF sensor to a target object based on the wiggling error.

Time-of-flight sensor and method of calibrating errors in the same

An optics-based fingerprint sensor may include a first photodiode, a first metal shield structure that is formed on the first photodiode and includes a first opening, a first color filter structure that is formed on the first metal shield structure and including a second opening exposing the first opening, a second photodiode that is spaced apart from the first photodiode by a predetermined distance, a first nano-optical filter structure that is formed on the second photodiode, and a first band limit filter structure that is formed on the nano-optical filter structure.

Optics-based fingerprint sensor, electric device including optics-based fingerprint sensor, and operation method of electric device

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Seoul, South Korea

Hayoung Ko