Phase plate and fabrication method for color-separated laser backlight in display systems

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United States of America Patent

PATENT NO 12124070
APP PUB NO 20230244023A1
SERIAL NO

18128497

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Abstract

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According to examples, a phase plate may include a transparent substrate and a photopolymer layer attached to the transparent substrate. The photopolymer layer may adjust a backlight via a phase adjustment and focusing. The phase plate may focus a plurality of red, green, and blue components of the backlight onto respective red, green, and blue subpixels of a thin-film-transistor (TFT) layer deposited thereon. A distance between the photopolymer layer of the phase plate and the plurality of red, green, and blue subpixels of the thin-film-transistor (TFT) layer may be in a range from about 200 μm to about 500 μm. In some examples, the phase plate may be part of a liquid crystal display (LCD) apparatus along with a red, green, blue (RGB) laser to provide backlight; a grating light guide to transmit the backlight; and a liquid crystal display (LCD) layer on the thin-film-transistor (TFT) layer.

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Patent Owner(s)

Patent OwnerAddress
FACBOOK TECHNOLOGIES LLC1601 WILLOW ROAD MENLO PARK CA 94025

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Geng, Ying Bellevue, US 160 976
Gollier, Jacques Sammamish, US 258 2246
Tu, Xingzhou Redmond, US 10 1
Xu, Jian Redmond, US 831 9277

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