| 摘要 |
A tension apparatus for extending a patterning slit sheet included in a thin film deposition apparatus that can be simply applied to produce large-sized display devices on a mass scale and that improves manufacturing yield. The tension apparatus, wherein a plurality of patterning slits are formed along a first direction in the patterning slit sheet, and distances between adjacent patterning slits are different from each other, includes: a light source disposed to face the patterning slit sheet and irradiating light toward the patterning slit sheet; a tension member combined to at least one end of the patterning slit sheet, and applying a predetermined tensile force on the patterning slit sheet; and a master glass onto which light irradiated from the light source and passed through the patterning slit sheet is projected.
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