OPTICAL FILM
An object of the present invention is to provide an optical film capable of satisfactorily peeling a surface protection film even when having a cutout. The optical film includes a polarizing plate, and a surface protection film which is detachably bonded to one side surface of the polarizing plate....
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| Main Author | |
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| Format | Patent |
| Language | English Korean |
| Published |
11.03.2020
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| Subjects | |
| Online Access | Get full text |
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| Summary: | An object of the present invention is to provide an optical film capable of satisfactorily peeling a surface protection film even when having a cutout. The optical film includes a polarizing plate, and a surface protection film which is detachably bonded to one side surface of the polarizing plate. In addition, the surface protection film has a base layer and an adhesive layer. The optical film is a square or a rounded square having the cutout on at least one side when viewed in a plane. The optical film has an adhesive lacking unit formed to allow at least an end unit of the surface, at a polarizing plate side, of the adhesive layer to be located inward 15 μm or more from an end unit of the base layer, and the adhesive lacking unit is formed on at least a part of one side having the cutout.
[과제] 절결부를 갖는 경우에도, 표면 보호 필름을 양호하게 박리할 수 있는 광학 필름을 제공한다. [해결수단] 광학 필름은, 편광판과, 편광판의 한쪽 표면에 박리 가능하게 접합된 표면 보호 필름을 포함하고, 표면 보호 필름은 기재층과 점착제층을 갖는다. 광학 필름은, 평면에서 봤을 때, 적어도 한 변에 절결부를 갖는 사각형 또는 라운딩된 사각형이다. 광학 필름은, 점착제층의 적어도 편광판 측의 표면의 단부가 기재층의 단부에서부터 15 ㎛ 이상 내측에 위치하도록 형성된 점착제 결여부를 갖고, 점착제 결여부는 절결부를 갖는 한 변의 적어도 일부에 형성되어 있다. |
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| Bibliography: | Application Number: KR20190107344 |