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:
May. 13, 2025
Filed:
Mar. 14, 2024
3m Innovative Properties Company, St. Paul, MN (US);
Bharat R. Acharya, Woodbury, MN (US);
Robert D. Taylor, Stacy, MN (US);
Joseph P. Attard, Woodbury, MN (US);
Benjamin J. Forsythe, Stillwater, MN (US);
David T. Yust, Woodbury, MN (US);
Matthew E. Sousa, Rosemount, MN (US);
Jason S. Petaja, Hudson, WI (US);
Anthony M. Renstrom, Forest Lake, MN (US);
William Blake Kolb, Stillwater, MN (US);
Matthew S. Cole, Woodbury, MN (US);
Matthew S. Stay, Bloomington, MN (US);
Matthew R. D. Smith, Woodbury, MN (US);
Jeremy O. Swanson, Woodbury, MN (US);
Tri D. Pham, Woodbury, MN (US);
David A. Rosen, North St. Paul, MN (US);
Qunyi Chen, St. Paul, MN (US);
Lisa A. DeNicola, St. Paul, MN (US);
Quinn D. Sanford, Mosinee, WI (US);
Carl A. Stover, St. Paul, MN (US);
Lin Zhao, Woodbury, MN (US);
Gilles J. Benoit, Minneapolis, MN (US);
3M INNOVATIVE PROPERTIES COMPANY, St. Paul, MN (US);
Abstract
A display system for sensing a finger of a user applied to the display system includes a display panel; a sensor for sensing the finger; a sensing light source configured to emit a first light having a first wavelength W1; and a reflective polarizer disposed between the display panel and the sensor. For a substantially normally incident light, an optical transmittance of the reflective polarizer versus wavelength for a first polarization state has a band edge such that for a first wavelength range extending from a smaller wavelength L1 to a greater wavelength L2 and including W1, where 30 nm≤L2−L1≤50 nm and L1 is greater than and within about 20 nm of a wavelength L3 corresponding to an optical transmittance of about 50% along the band edge, the optical transmittance has an average of greater than about 75%.