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:
Apr. 07, 2026
Filed:
Nov. 06, 2024
Display device backlight with laser source and light guide plate having curved surface line sections
Magnolia White Corporation, Tokyo, JP;
Koji Fujisawa, Tokyo, JP;
Ken Kagabu, Tokyo, JP;
Koichi Okuda, Tokyo, JP;
Hiroaki Kijima, Tokyo, JP;
MAGNOLIA WHITE CORPORATION, Tokyo, JP;
Abstract
A backlight includes a light guide plate, a laser, and a reflector. The laser light incident on the first end face is reflected off the front surface, the rear surface, and the reflector, propagates inside the light guide plate, and exits from the front surface. The front surface has line sections each in a protruding or recessed shape in a region where the laser light is reflected. The line sections extend in a first direction between the first end face and the second end face, and are adjacent in a second direction perpendicular to the first direction. Each of the line sections has a curved surface formed by moving a straight line, parallel to an axis extending in the first direction, around the axis. An adjacent pair of the line sections has respective tips in the first direction that are not aligned with each other.