Invention Grant
- Patent Title: Optical laminate, polarizer, and display apparatus
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Application No.: US16058891Application Date: 2018-08-08
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Publication No.: US10591644B2Publication Date: 2020-03-17
- 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: JP2016-027340 20160216
- Main IPC: G02B1/111
- IPC: G02B1/111 ; G02B1/16 ; G02B1/18 ; B32B3/30 ; G02B5/30 ; B32B27/20 ; G02F1/1335 ; B32B7/02 ; G02B5/02 ; G09F9/00

Abstract:
An optical laminate includes a translucent substrate, and at least one optical functional layer provided on 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+25, (3) Y≤50, and (4) 7≤X≤25. The optical laminate has a transmitted image clarity of 15% to 55% 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 900 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
- US20180348408A1 OPTICAL LAMINATE, POLARIZER, AND DISPLAY APPARATUS Public/Granted day:2018-12-06
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