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. 25, 2021
Filed:
Jan. 19, 2018
Oji Holdings Corporation, Tokyo, JP;
Kotaro Dai, Tokyo, JP;
Kei Shinotsuka, Tokyo, JP;
Oji Holdings Corporation, Tokyo, JP;
Abstract
An antireflective structure having multiple light absorbing units each of which has a bottomed cylindrical shape, the light absorbing unit includes a bottom portion including an outer edge portion having a substantially circular shape, and a wall portion rising along the outer edge portion, and an upper side of the bottom portion is an opening portion, the average height of the wall portions being greater than or equal to 5 μm and smaller than or equal to 100 μm, an average opening diameter of the opening portions being greater than or equal to 1 μm and smaller than or equal to 10 μm, and a pinching structure configured with minute projections that stand in a group with an average pitch greater than or equal to 10 nm and smaller than or equal to 500 nm is formed on the bottom portion.