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. 05, 2021
Filed:
Aug. 10, 2018
Fujifilm Corporation, Tokyo, JP;
Yukito Saitoh, Minami-ashigara, JP;
Yujiro Yanai, Minami-ashigara, JP;
Junichi Hirakata, Minami-ashigara, JP;
Ryota Matsubara, Tokyo, JP;
Kotaro Yasuda, Minami-ashigara, JP;
Jun Watanabe, Minami-ashigara, JP;
FUJIFILM Corporation, Tokyo, JP;
Abstract
Provided is a display device capable of switching between a wide viewing angle and a narrow viewing angle with a simple configuration and simple control. The problem is solved by providing a display element and an optical switching element which is disposed on a visible side of the display element, in which the optical switching element has a light guiding plate and a light source for causing light to be incident on an end surface of the light guiding plate, and 80% or more of the light emitted from the light guiding plate when the light source is turned on is emitted to a region at an angle of 30° or more with respect to a normal line of the light guiding plate on a surface on the opposite side of the display element.