Hitachi Displays, Ltd.

Aki Sakai

Noboru Kunimatsu

Hidehiro Sonoda

Yoshitada Oshida

Shigeru Matsuyama

In a liquid crystal display device using a photodecomposition type light orientation film, the deterioration of display performance due to an impurity resulting from a light orientation treatment of the orientation film is suppressed to enable high-quality image display. In the orientation film to which a liquid crystal orientation function is provided, the amount of decomposition product due to the orientation film is 3957.5 ng or less per 100 cm.

Liquid crystal display device

It is possible to enhance the utilization efficiency of a light source and impart an orientation control performance and a pretilt angle to an orientation film in a short treatment time. Substrates to which orientation films are applied are mounted on stages which are sequentially transported to a main irradiation region and a sub-irradiation region. Light flux irradiated from a light source device having a single light source receives polarization treatment at a polarization unit, thus generating main polarized light and sub-polarized light. The main polarized light is irradiated to the orientation film formed on the substrate which is transported to a main irradiation region, thus imparting orientation control performance to the orientation film. Subsequently, the substrate is transported to a sub-irradiation region, and sub-polarized light is irradiated to the orientation film to which orientation control performance is already imparted, thus imparting a pretilt angle to the orientation film.

Method and apparatus for imparting alignment to alignment layer through generation of two kinds of polarized light from a single light source and treatment with both

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Mobara, Japan

Aki Sakai