Invention Grant
- Patent Title: Illumination device including a first and a second light reduction portion and a display device including the same
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Application No.: US17690553Application Date: 2022-03-09
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Publication No.: US11789311B2Publication Date: 2023-10-17
- Inventor: Takeshi Masuda , Hisashi Watanabe , Hirotoshi Yasunaga
- Applicant: Sharp Display Technology Corporation
- Applicant Address: JP Kameyama
- Assignee: Sharp Display Technology Corporation
- Current Assignee: Sharp Display Technology Corporation
- Current Assignee Address: JP Kameyama
- Agency: ScienBiziP, P.C.
- Priority: JP 21055846 2021.03.29
- Main IPC: G02F1/13357
- IPC: G02F1/13357 ; F21V8/00 ; G02F1/1335
Abstract:
An illumination device includes a light source, a wavelength conversion sheet configured to perform wavelength conversion on light from the light source, and a first light reduction portion disposed in a frame shape as a whole overlapping an outer peripheral portion of the wavelength conversion sheet in a plan view between the light source and the wavelength conversion sheet, and configured to reduce a light amount of incident light.
Public/Granted literature
- US20220308399A1 ILLUMINATION DEVICE AND DISPLAY DEVICE Public/Granted day:2022-09-29
Information query
IPC分类:
