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. 23, 2021
Filed:
Dec. 18, 2018
Applicant:
Lg Display Co., Ltd., Seoul, KR;
Inventors:
Manhyeop Han, Paju-si, KR;
Jiho Cho, Paju-si, KR;
Assignee:
LG Display Co., Ltd., Seoul, KR;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G06K 9/00 (2006.01); G06F 3/041 (2006.01); G02B 6/12 (2006.01); G06F 21/32 (2013.01); H01L 27/32 (2006.01);
U.S. Cl.
CPC ...
G06K 9/0004 (2013.01); G02B 6/12004 (2013.01); G06F 3/0412 (2013.01); G06F 21/32 (2013.01); G06K 9/0008 (2013.01); G06K 9/00087 (2013.01); H01L 27/3234 (2013.01);
Abstract
A fingerprint recognition system may comprise: a display panel configured to display an image on a screen; a light source device configured to irradiate light onto a transparent substrate disposed on the screen of the display panel; an image sensor configured to obtain a fingerprint image with light reflected from a fingerprint contacting the transparent substrate on the screen; and an image sensor controller configured to control an exposure time of the image sensor to obtain the fingerprint image based on a contrast ratio of the fingerprint image.