Fill port seal with first and second photosensitizers

Claim 1

A liquid crystal display device comprising a pair of substrates which are placed in parallel and at least one of which is transparent, the peripheries of said substrates being sealed by a sealant to form an inner cavity with a fill port, said inner cavity being filled with a liquid crystal composition, the inner surfaces of said substrates facing each other having electrodes and orientation controlling films thereon, and said fill port being sealed by using a photo-setting resin composition comprising an acrylic or methacrylic type resin as a major resin component and two or more photosensitizers different in quality, wherein the photosensitizers different in quality are comprised of at least one first photosensitizer which can reduce the curing time of the resin composition greatly and at least one second photosensitizer which can reduce the curing time of the resin composition not so greatly as the first photosensitizer, and wherein the at least one first photosensitizer is selected from the group consisting of β-naphthalene sulfochloride, 1-butylnaphthalene-sulfonic acid-2-chloride, 1,4-dibutylnaphthalene sulfonic acid-2-chloride, p,p-ditolyl disulfide, β,β-dinaphthalene disulfide, decyl chloride, benzoin methyl ether, benzoin ethyl ether, benzoin isopropyl ether, benzoin n-butyl ether, benzoin sec-butyl ether, benzoin isobutyl ether, di-tert-butyl peroxide, 2-methylanthraquinone, 1,5-dinitroanthraquinone, and anthraquinone, and the at least one second photosensitizer is selected from the group consisting of benzene-sulfochloride, diphenyl disulfide, tetramethylthiuram disulfide, bis(2-benzthiazyl) disulfide, dibenzyl ketone, Michler's ketone, phenyl acetone, benzophenone, 4-methoxy benzophenone, acetophenone, acetylacetone, benzoin phenyl acetate, benzoin tert-butyl ether, furoin, furoin methyl ether and tert-butyl perbenzoate.