Invention Grant
- Patent Title: Quantum dot protective film, and wavelength conversion sheet and backlight unit obtained by using the same
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Application No.: US15719712Application Date: 2017-09-29
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Publication No.: US10557970B2Publication Date: 2020-02-11
- Inventor: Koji Murata , Kenji Matsumasa , Kengo Okamura , Satoshi Iwata , Masato Kurokawa
- Applicant: TOPPAN PRINTING CO., LTD.
- Applicant Address: JP Tokyo
- Assignee: TOPPAN PRINTING CO., LTD.
- Current Assignee: TOPPAN PRINTING CO., LTD.
- Current Assignee Address: JP Tokyo
- Agency: Foley & Lardner LLP
- Priority: JP2015-075753 20150402
- Main IPC: G02B1/14
- IPC: G02B1/14 ; F21V9/30 ; B32B7/04 ; F21V8/00
Abstract:
A quantum dot protective film for sealing a phosphor, including: a protective layer having foreign matter, the maximum size of which is 100 to 500 μm; and a coating layer formed on one surface of the protective layer, wherein the abundance ratio of the foreign matter with the maximum size of 100 to 500 μm is 0.01 to 5.0 particles/m2 in the protective layer, and the haze value is 20% or higher.
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