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:
Aug. 26, 2025
Filed:
Jun. 20, 2023
Taiwan Semiconductor Manufacturing Company Ltd, Hsinchu, TW;
Chunhao Lin, Tainan, TW;
Yun-Wei Cheng, Taipei, TW;
Kuo-Cheng Lee, Tainan, TW;
Chien Nan Tu, Kaohsiung, TW;
TAIWAN SEMICONDUCTOR MANUFACTURING COMPANY, LTD., Hsinchu, TW;
Abstract
A near infrared sensing device includes a near infrared light sensor configured to detect infrared light at least at a design-basis infrared wavelength, and a surface plasmon polariton structure including at least an embedded grating that is embedded in a light-receiving surface of the near infrared light sensor. The surface plasmon polariton structure is configured to couple with light at the design-basis infrared wavelength to form a surface plasmon polariton at the light-receiving surface of the near infrared light sensor. The surface plasmon polariton structure may further include a metal grating disposed on the light-receiving surface of the near infrared light sensor and aligned with the embedded grating. The embedded grating may comprise an embedded metal grating that is embedded in the light-receiving surface of the near infrared light sensor, or trenches formed in the light-receiving surface of the near infrared light sensor and at least partially filled with air.