Dic Corporation

Ryo Kanda

Shinichi Hirata

Masaomi Kimura

Hirokazu Sugiyama

Hyobok Cha

It is a method for manufacturing a liquid crystal display device in which an anchoring force causing liquid crystal molecules to be vertically aligned can be exerted sufficiently. A liquid crystal display device () including two substrates AM and CF and a liquid crystal layer () sandwiched therebetween can be manufactured. The liquid crystal display device manufacturing method includes: a first step of subjecting a surface of one of the substrates AM and CM that is to be in contact with the liquid crystal layer () to hydrophilization treatment; and a second step of disposing the two substrates AM and CF so as to face each other such that the two substrates are in contact with a liquid crystal composition containing liquid crystal molecules and an alignment aid having a polar group and having the function of causing the liquid crystal molecules to be aligned spontaneously.

Method for manufacturing liquid crystal display device

Provided are a substrate that can exert an anchoring force causing liquid crystal molecules to be vertically aligned and a liquid crystal display device. The substrate of the present invention is to be used in contact with a liquid crystal composition containing liquid crystal molecules and an alignment aid having a polar group and having the function of causing the liquid crystal molecules to be aligned spontaneously. The substrate includes an insulating film having a contact surface to be in contact with the liquid crystal composition. The static contact angle of water on the contact surface at 25&#xb0; C. is 70&#xb0; or less and/or the surface free energy of the contact surface is 50 mN/m or more. The substrate is preferably a substrate in direct contact with the liquid crystal composition with no alignment film therebetween.

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Kita-adachi-gun, Japan

Ryo Kanda