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:
Jan. 20, 2026
Filed:
Feb. 17, 2021
Sony Semiconductor Solutions Corporation, Kanagawa, JP;
Koji Sekiguchi, Kanagawa, JP;
Kenichi Murata, Kanagawa, JP;
Tomiyuki Yukawa, Kanagawa, JP;
Masahiro Joei, Kanagawa, JP;
Hideaki Togashi, Kanagawa, JP;
SONY SEMICONDUCTOR SOLUTIONS CORPORATION, Kanagawa, JP;
Abstract
A multilayer film according to an embodiment of the present disclosure includes: semiconductor layers; and dielectric layers. In each of the semiconductor layers, a value of an optical constant k1 for light having a wavelength in a visible light region among optical constants k is larger than a value of an optical constant k2 for light having a wavelength in an infrared light region. The optical constants k each serves as an extinction coefficient that includes an imaginary part of a complex refractive index. The semiconductor layers and the dielectric layers are alternately stacked and the multilayer film has an optical distance of 0.3 μm or more and 10 μm or less in a stack direction and absorbs at least a portion of visible light and transmits infrared light.