Invention Grant
- Patent Title: Optical laminate, polarizer, and display apparatus
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Application No.: US16053502Application Date: 2018-08-02
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Publication No.: US10539720B2Publication Date: 2020-01-21
- Inventor: Naoki Serizawa , Takayuki Nakanishi
- Applicant: TOPPAN TOMOEGAWA OPTICAL FILMS CO., LTD.
- Applicant Address: JP Tokyo
- Assignee: TOPPAN TOMOEGAWA OPTICAL FILMS CO., LTD.
- Current Assignee: TOPPAN TOMOEGAWA OPTICAL FILMS CO., LTD.
- Current Assignee Address: JP Tokyo
- Agency: Squire Patton Boggs (US) LLP
- Priority: JP2016-023845 20160210
- Main IPC: G02B5/02
- IPC: G02B5/02 ; B32B27/20 ; B32B3/30 ; G02B5/30 ; G02B1/111 ; B32B7/02 ; G02B1/16 ; G02B1/18 ; B32B27/06 ; B32B27/30 ; G02F1/1335

Abstract:
An optical laminate includes a translucent substrate, and at least one optical functional layer provided on of the translucent substrate. The optical functional layer has a concave-convex shape on at least one surface. The optical functional layer contains two types of inorganic fine particles, and resin particles. The optical laminate has an internal haze X and a total haze Y satisfying (1) Y>X, (2) Y≤X+17, (3) Y≤57, and (4) 19≤X≤40. The optical laminate has a transmitted image clarity of 30% to 70% as measured using a 0.5-mm width optical comb. The number of projections having a height of not smaller than 0.1 μm is not less than 600 per mm2 of measurement area in the concave-convex shape as measured by optical interferometry at an outermost surface of the optical functional layer.
Public/Granted literature
- US20180341049A1 OPTICAL LAMINATE, POLARIZER, AND DISPLAY APPARATUS Public/Granted day:2018-11-29
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