US 11,709,397 B2
Backlight including patterned reflectors, diffuser plate, and method for fabricating the backlight
Kirk Richard Allen, Elmira, NY (US); Fedor Dmitrievich Kiselev, Saint-Petersburg (RU); Dmitri Vladislavovich Kuksenkov, Elmira, NY (US); Christopher Michael Lynn, Liberty, PA (US); Pamela Arlene Maurey, Savona, NY (US); Xiang-Dong Mi, Pittsford, NY (US); Scott Christopher Pollard, Big Flats, NY (US); Nikolay Timofeyevich Timofeev, St. Petersburg (RU); and Andrii Varanytsia, Corning, NY (US)
Assigned to Corning Incorporated, Corning, NY (US)
Appl. No. 17/292,790
Filed by Corning Incorporated, Corning, NY (US)
PCT Filed Nov. 5, 2019, PCT No. PCT/US2019/059820
§ 371(c)(1), (2) Date May 11, 2021,
PCT Pub. No. WO2020/101946, PCT Pub. Date May 22, 2020.
Prior Publication US 2021/0397049 A1, Dec. 23, 2021
Int. Cl. G02F 1/13357 (2006.01); G02F 1/1335 (2006.01)
CPC G02F 1/133606 (2013.01) [G02F 1/133524 (2013.01); G02F 1/133605 (2013.01)] 13 Claims
OG exemplary drawing
 
1. A backlight comprising:
a substrate;
a plurality of light sources proximate the substrate;
a reflective layer on the substrate;
a light guide plate proximate the plurality of light sources;
a pattern of light extractors on the light guide plate, the pattern of light extractors comprising a varying density that is highest at locations that are farthest away from the plurality of light sources;
a plurality of patterned reflectors on the light guide plate, each patterned reflector aligned with a corresponding light source; and
a diffusive layer directly on a surface of the light guide plate,
wherein the diffusive layer comprises a plurality of first portions comprising a first diffusive pattern, each first portion aligned with a corresponding light source, and
a second portion surrounding each of the plurality of first portions, the second portion comprising a second diffusive pattern, the second diffusive pattern comprising a transmittance less than a transmittance of the first diffusive pattern.