Title:
SEMICONDUCTOR DEVICE, ELECTRONIC APPARATUS, AND METHOD FOR DRIVING SEMICONDUCTOR DEVICE
Document Type and Number:
WIPO Patent Application WO/2023/285905
Kind Code:
A1
Abstract:
Provided are a semiconductor device that is able to perform authentication in a short time, and a method for driving the same. Provided are a semiconductor device having a light-emitting device and an imaging device, and a method for driving said semiconductor device. The imaging device has pixels arrayed in a matrix and a row driver circuit that has a shift register circuit. The method for driving has a first mode and a second mode. The first mode has a step for detecting the position of a finger of a user. The second mode has a step for reading an image of the fingerprint of the finger of the user one row at a time from the pixels in the first row to the row where the position of the finger of the user was detected in the first mode. When the first mode and the second mode are finished, the operation of the shift register circuit stops.
Inventors:
KAWASHIMA SUSUMU (JP)
ATSUMI TOMOAKI (JP)
ATSUMI TOMOAKI (JP)
Application Number:
PCT/IB2022/056087
Publication Date:
January 19, 2023
Filing Date:
June 30, 2022
Export Citation:
Assignee:
SEMICONDUCTOR ENERGY LAB (JP)
International Classes:
G06V40/12; A61B5/1172; G06F3/041; G06F3/042; G06F21/32
Foreign References:
| JP2020525891A | 2020-08-27 | |||
| JP2020184226A | 2020-11-12 | |||
| US20170024597A1 | 2017-01-26 |
Other References:
TAO FENG ; ZIYI LIU ; BOGDAN CARBUNAR ; DAINIS BOUMBER ; WEIDONG SHI: "Continuous Remote Mobile Identity Management Using Biometric Integrated Touch-Display", MICROARCHITECTURE WORKSHOPS (MICROW), 2012 45TH ANNUAL IEEE/ACM INTERNATIONAL SYMPOSIUM ON, IEEE, 1 December 2012 (2012-12-01), pages 55 - 62, XP032339574, ISBN: 978-1-4673-4920-8, DOI: 10.1109/MICROW.2012.9
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