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. 02, 2024
Filed:
Mar. 27, 2020
Sakai Display Products Corporation, Sakai, JP;
Shintaro Yamada, Sakai, JP;
Yukio Yoshida, Sakai, JP;
Atsuko Maeda, Sakai, JP;
Sumire Hombo, Sakai, JP;
Hideki Nakagawa, Sakai, JP;
Mitsuhiro Takeba, Sakai, JP;
Toshihiro Yamashita, Sakai, JP;
Katsumi Kondo, Sakai, JP;
SAKAI DISPLAY PRODUCTS CORPORATION, Sakai, JP;
Abstract
An optical stack includes: a light scattering film converting light received at a light receiving surface into scattering light therein and then outputting the scattering light outside from a light output surface, and a sheet provided on the light output surface side of the light scattering film. The light scattering film includes: a functional layer formed of a light-transmissive composition including an organic polymer compound and light scattering particles. The functional layer includes a first surface receiving the light and a second surface from which the scattering light is output. The functional layer includes a particle layer formed of light scattering particles having a content of 60% by volume or higher among the light scattering particles, the particle layer expanding along the first surface and being concentrated in a direction perpendicular to the first surface.