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:
Oct. 21, 2025
Filed:
Mar. 10, 2023
Magnolia White Corporation, Tokyo, JP;
Masataka Ikeda, Tokyo, JP;
MAGNOLIA WHITE CORPORATION, Tokyo, JP;
Abstract
An authentication device includes a display device and a control circuit. The display device includes a first transistor having a gate and a source electrode, a photoelectric conversion element having a first electrode connected to a drain electrode of the first transistor, and a capacitive element connected between the gate electrode and the drain electrode. The control circuit controls resetting the drain electrode, initializing the gate electrode, storing first charge corresponding to the threshold of the first transistor in the capacitive element, setting the threshold of the first transistor, transmitting a signal including data for causing the photoelectric conversion element to emit to the gate electrode, adding second charge corresponding data to the first charge, causing the photoelectric conversion element to emit, reading a voltage corresponding to the first charge and the second charge, and generating a PUF-ID using the voltage.