ULTRA-VIOLET LIGHT POLARIZING LIGHT SOURCE DEVICE AND MANUFACTURING METHOD OF LIQUID CRYSTAL ORIENTATION FILM USING IT

PROBLEM TO BE SOLVED: To provide an ultra-violet light polarizing light source device in which large-area polarized light easily obtained at a low cost, the ultra-violet light of wide wavelength region is used so that the selective range of an orientation film forming material is wide, the operation is easy having a slim format, the irradiation amount of the polarized ultra-violet light is adjusted smaller than the output lower limit value, and which is adaptable to form a low-irradiaion type light orientation film, and also to provide a manufacturing method of the liquid orientation film using the ultra-violet light polarizing light source device. SOLUTION: The ultra-violet light polarizing light source device wherein a polarizing film including materials showing dicroism in an ultra violet region, an optical filter for cutting the ultra-violet light of a short wavelength and an ultra-violet light irradiation device are combined together, is provided with a light shielding slit between the polarizing film and the ultra-violet light irradiation device. By using this device to manufacture the liquid crystal orientation film, a monodomain-oriented liquid layer and an obliquely oriented liquid layer is formed. COPYRIGHT: (C)2004,JPO