Patent ID: 9063376
Filing Date: 2015-06-23
Classification: B29C,G02B,G02F,G03F

Abstract:
1. An exposure device, in which each of sections of an alignment material film corresponding to picture elements of a liquid crystal display device is split into two parts in a width direction of the picture elements and the two parts are exposed from different directions of each other, whereby the alignment material film is photoaligned, the exposure device comprising: a first light source and a second light source for outputting exposure light; a mask in which there are formed a first light transmission region group in which a plurality of light transmission regions for transmitting the exposure light from said first light source are arrayed in a single row and a second light transmission region group in which a plurality of light transmission regions for transmitting the exposure light from said second light source are arrayed in a single row; a mask support portion for supporting said mask, the mask support portion being disposed towards said first light source; and a movement device for causing the alignment material film and said mask to move relative to each other so that the alignment material film is scanned using said exposure light; said first and second light transmission region groups being disposed spaced apart in a direction of relative scanning of said alignment material film with respect to said mask; the plurality of light transmission regions respectively corresponding to regions equivalent to one-half of one picture element split in the width direction; the light transmission regions of said first light transmission region group and the light transmission regions of said second light transmission region group being arrayed, in a direction perpendicular to said scanning direction, with intervals therebetween such that there is no overlap in said scanning direction; and the exposure light from said first light source and said second light source being caused to be inclined so as to mutually intersect above said mask on an optical path between said first and second light sources and said mask and being transmitted through said first light transmission region group and said second light transmission region group of said mask so that regions of said alignment material film which correspond to split regions of picture elements are irradiated.