Optical sheet, backlight unit, liquid crystal display apparatus, and information device

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 11966117
APP PUB NO 20230052606A1
SERIAL NO

17978632

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ATTORNEY / AGENT: (SPONSORED)

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Abstract

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An optical sheet 5 is an optical sheet, at least a first surface of the optical sheet has unevenness. A sparkle contrast of the first surface measured in conformity with JIS C 1006: 2019 is 4% or less. An arithmetic average roughness Ra of the first surface measured in conformity with JIS B 0601: 2001 (with an assessment length set to 290 μm) may be 0.6 μm or less. A peak count RPc of the first surface measured in conformity with JIS B 0601: 2001 (with an assessment length set to 290 μm) may be 16 or more.

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Patent Owner(s)

  • KEIWA INC.

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Sasa, Kenta Tokyo, JP 2 2

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