US 11,988,859 B2
Reflective wire grid polarizer with shaped ribs
Daniel Bacon-Brown, Orem, UT (US); Michael Black, Orem, UT (US); R. Stewart Nielson, Pleasant Grove, UT (US); Bradley R. Williams, Pocatello, ID (US); Benjamin Downard, Draper, UT (US); Jeffrey H. Rice, South Jordan, UT (US); and Jim Pierce, Sandy, UT (US)
Assigned to Moxtek, Inc., Orem, UT (US)
Filed by Moxtek, Inc., Orem, UT (US)
Filed on Oct. 26, 2022, as Appl. No. 17/974,318.
Application 17/974,318 is a continuation of application No. 16/919,513, filed on Jul. 2, 2020, granted, now 11,513,271.
Claims priority of provisional application 62/875,093, filed on Jul. 17, 2019.
Prior Publication US 2023/0046399 A1, Feb. 16, 2023
This patent is subject to a terminal disclaimer.
Int. Cl. G02B 5/30 (2006.01)
CPC G02B 5/3058 (2013.01) [G02B 5/3075 (2013.01)] 15 Claims
OG exemplary drawing
 
1. A reflective wire grid polarizer (WGP) comprising:
an array of wires on a face of a substrate, with channels between adjacent wires;
each wire consists essentially of a reflective rib; and
the reflective rib being wider at a distal end farthest from the substrate than at a proximal end closest to the substrate, a taper angle of sidewalls of the reflective rib, relative to a plane perpendicular to the face of a substrate and parallel with the array of wires, is within the following range: 2°≤taper angle≤4°.