Lighting device

Number of patents in Portfolio can not be more than 2000

United States of America

PATENT NO 12196410
APP PUB NO 20230417392A1
SERIAL NO

18244545

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ATTORNEY / AGENT: (SPONSORED)

Importance

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Abstract

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Disclosed is a lighting device including a light guide plate, a plurality of LEDs, a prism sheet disposed on a side toward the upper surface of the light guide plate, and a reflective sheet disposed on a side toward the lower surface of the light guide plate. The plurality of LEDs are arrayed on a side surface corresponding to a first side of the light guide plate in a first direction along the first side. The prism sheet includes a first prism array that is formed on a surface facing the light guide plate. The first prism array includes prisms that are extended in the first direction and arrayed in a second direction perpendicular to the first direction. The upper surface of the light guide plate and the prism sheet sandwich a diffusion sheet therebetween. The diffusion sheet has a haze value between 30% and 65% when measured in compliance with JIS K7361. The prisms on the first prism array have an apex angle between 55 degrees and 66 degrees.

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Patent Owner(s)

Patent OwnerAddress
JAPAN DISPLAY INC3-7-1 NISHI-SHINBASHI MINATO-KU TOKYO 105-0003

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Hasegawa, Makoto Tokyo, JP 250 3977
Okada, Masafumi Tokyo, JP 60 1611
Suzuki, Nobuyuki Tokyo, JP 350 3701

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