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. 07, 2024
Filed:
Feb. 06, 2023
Coretronic Corporation, Hsin-Chu, TW;
Coretronic Corporation, Hsin-Chu, TW;
Abstract
A backlight module including a light guide plate, a light source, an upper prism sheet, and a lower prism sheet is provided. The light guide plate has a light incident surface and a light emitting surface. The upper prism sheet is disposed at a side of the light emitting surface of the light guide plate. The upper prism sheet includes an upper substrate and first prism microstructures. Cross-sections of the first prism microstructures are isosceles triangles, and apex angles thereof fall within a range of 80 to 90 degrees. The lower prism sheet is disposed between the light guide plate and the upper prism sheet. The lower prism sheet includes a lower substrate and second prism microstructures. Cross-sections of the second prism microstructures are isosceles triangles, and apex angles thereof fall within a range of 100 to 130 degrees.