发明名称 |
OPTICAL SHEET AND BACKLIGHT UNIT USING THE SAME |
摘要 |
PROBLEM TO BE SOLVED: To provide an optical sheet reducing interference fringes of light even when a rear surface-covering layer such as a sticking preventing layer is provided and to provide a backlight unit preventing uneven brightness by using the optical sheet. SOLUTION: The optical sheet 1 is provided with a transparent base material layer 2, an optical functional layer 3 formed on the front surface side of the base material layer 2 and the rear surface-covering layer 4 composed of a transparent resin laminated on the rear surface side of the base material layer 2 where the thickness of the rear surface-covering layer 4 is >=4.5 μm and <=6.4 μm. An acrylic resin is preferably used as the transparent resin constituting the rear surface-covering layer 4. The rear surface-covering layer 4 is formed by coating with a resin composition containing the transparent resin. The coating amount (expressed in terms of solid matter) is preferably >=5.6 g/m<2> and <=9.5 g/m<2> . |
申请公布号 |
JP2003004912(A) |
申请公布日期 |
2003.01.08 |
申请号 |
JP20010185813 |
申请日期 |
2001.06.20 |
申请人 |
KEIWA INC |
发明人 |
HIRAKAWA KEIKO;MINEO YUTAKA |
分类号 |
G02B6/00;F21V8/00;F21Y103/00;G02B1/10;G02B5/02;G02F1/13357 |
主分类号 |
G02B6/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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