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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.:

US 10656495 B1

PDFFull Text
Expired
Date of Patent:
May. 19, 2020

Filed:

Oct. 07, 2016

Optical sheet, screen, and display apparatus

Applicant:

Dai Nippon Printing Co., Ltd., Tokyo, JP;

Inventors:

Shogo Kubota, Tokyo, JP;

Makio Kurashige, Tokyo, JP;

Kaori Nakatsugawa, Tokyo, JP;

Assignee:

DAI NIPPON PRINTING Co., Ltd., Tokyo, JP;

Attorney:

Michael Best & Friedrich LLP

Primary Examiner:

Jie Lei

Int. Cl.
CPC ...
G02F 1/19 (2019.01); G03B 21/62 (2014.01); G02B 27/48 (2006.01); G02B 5/02 (2006.01); H04N 5/74 (2006.01); G03B 21/10 (2006.01); H04N 9/31 (2006.01);
U.S. Cl.
CPC ...
G02F 1/19 (2013.01); G02B 5/02 (2013.01); G02B 27/48 (2013.01); G03B 21/10 (2013.01); G03B 21/62 (2013.01); H04N 5/74 (2013.01); H04N 9/31 (2013.01);
Abstract

An optical sheet, a screen, and a display apparatus capable of reducing speckles are provided. An optical sheet () includes a particle layer () including a transparent retaining part () having a predetermined thickness and a particle () that is accommodated in a cavity () formed in the retaining part () and includes a first portion () and a second portion () having different dielectric constants. The first portion () includes a transparent first main portion () and a first diffusion component () that diffuses light. The second portion () includes a transparent second main portion () and a second diffusion component () that diffuses light. The first diffusion component () and the second diffusion component () have a diameter d satisfying the following conditional expression (1):0.1 μm≤d≤15 μm  (1).

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Kubota, Shogo. (2020). Optical sheet, screen, and display apparatus (U.S. Patent No. 10656495). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/10656495

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