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:
Nov. 05, 2024
Filed:
Nov. 22, 2023
Sergiy Vasylyev, Elk Grove, CA (US);
Sergiy Vasylyev, Elk Grove, CA (US);
S.V.V. TECHNOLOGY INNOVATIONS, INC., Sacramento, CA (US);
Abstract
A method for making a backlight unit for LCD displays is disclosed, involving a thin and flexible light transmissive sheet with first and second broad-area surfaces, and opposing first and second edges. A patterned light extraction area, comprising a two-dimensional pattern of microstructures, and a light mixing area, are formed on the sheet. A side-emitting LED strip is provided, with a flexible printed circuit, a linear array of side-emitting LED packages, and electrical contacts for power supply connection. The circuit's major surface is oriented parallel to the sheet and positioned in contact with one broad-area surface. A reflector is placed on one side of the sheet. The circuit and part of the light mixing area are covered with an opaque, heat-conductive housing. The light mixing area's width exceeds the sheet's thickness, and the light-emitting surface of each LED package is at least 1.5 times the sheet's thickness.