Nitta Corporation

Takashi Megumi

Takumi Kato

Koji Yamashita

Satoshi Yamaguchi

Kosuke Marutani

Hikaru Ito

A light shielding member of the present invention may include a first polarizing plate, a second polarizing plate facing the first polarizing plate, and a thermosensitive sheet interposed between the first polarizing plate and the second polarizing plate, in which the first polarizing plate and the second polarizing plate may be positioned so that their respective transmission axes are different from each other. The thermosensitive sheet may include a side chain crystal polymer that crystallizes at a temperature lower than the melting point and exhibits fluidity at a temperature of the melting point or higher where the side chain crystal polymer is oriented in one direction.

Light shielding member

A light shielding member of the present invention includes a first polarizing plate, a second polarizing plate facing the first polarizing plate, and a thermosensitive sheet interposed between the first polarizing plate and the second polarizing plate, in which the first polarizing plate and the second polarizing plate are positioned so that their respective transmission axes are different from each other, and the thermosensitive sheet contains a side chain crystal polymer that crystallizes at a temperature lower than the melting point and exhibits fluidity at a temperature of the melting point or higher. The light shielding member may transmit light at a temperature lower than the melting point and may not transmit light at a temperature of the melting point or higher, when light travels from one of the first polarizing plate and the second polarizing plate toward the other.

Thermosensitive fine particles of the present invention include a side chain crystal polymer which is crystallized at a temperature lower than a melting point and which exhibits fluidity at a temperature equal to or more than the melting point. The side chain crystal polymer may include, as a monomer component, a (meth)acrylate having a straight-chain alkyl group having 14 or more carbon atoms. A mean particle diameter of the fine particles may be 0.1 to 50 μm. The thermosensitive fine particles may include no organic solvents.

Growing community of inventors

Yamatokohriyama, Japan

Takashi Megumi