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:
Feb. 18, 2025
Filed:
Jun. 04, 2024
Brightview Technologies, Inc., Durham, NC (US);
Kenneth L. Walker, Semora, NC (US);
Matthew K. Pope, Durham, NC (US);
BrightView Technologies, Inc., Durham, NC (US);
Abstract
A BLU includes a 2D array of LEDs, wherein a number of rows in the two-dimensional array is less than a number of columns in the two-dimensional array, and at least one LED in the two-dimensional array produces light with an angular distribution of nominally ±90 degrees around a center of the at least one LED. A transparent solid material layer is positioned with a bottom surface over the 2D array of LEDs that is configured to transform the light produced by the 2D array of LEDs into light having an angular distribution of nominally less than ±90 degrees around the center of the at least one LED at a top surface of the transparent solid material layer. A diffuser film is positioned over the top surface of the transparent solid material layer and is configured to provide a FWHM of greater than 60 degrees and configured to diffuse the light produced at the top surface of the transparent solid material layer to produce diffused light at a top surface of the diffuser film. A pair of cross BEFs is positioned over the top surface of the diffuser film and includes a plurality of prism microstructures where at least some prism microstructures have an apex angle of approximately ninety degrees. A polarizer reflector film is positioned over the pair of cross BEF and is configured to transmit one polarization and to reflect another polarization.