Production process of liquid crystal display panel, seal material for liquid crystal cell and liquid crystal display

A production process of liquid crystal display panels comprising the steps of:

• preparing a seal material comprising (meth)acrylate monomers or oligomers derived from epoxy compound, (meth)acrylic acid ester, a photoinitiator, a thermosetting agent and an inorganic filler, wherein the (meth)acrylic acid ester includes 5 to 10 weight % based on the seal material of (meth)acrylic acid ester having a plurality of (meth)acrylic acid residues per molecule and 2 to 10 weight % based on the seal material of (meth)acrylic acid ester having one (meth)acrylic acid residue per molecule, the seal material being capable of ultraviolet ray curing and thermosetting, and wherein the seal material undergoes polymerization,
• forming said seal material containing a curing resin and a curing agent to initiate curing of the curing resin at a portion to be sealed on the surface of a first transparent substrate on which electrodes have been installed,
• dropping a liquid crystal in the region surrounded by said seal material,
• attaching the surface of a second transparent substrate on which electrodes have been installed to the surface of the first transparent substrate with electrodes,
• attaching the two transparent substrates with electrodes by means of the above mentioned seal material, wherein the production process comprises a first process of irradiating an ultraviolet ray to the seal material, and a second process for increasing the curing by heating the seal material after the first process, and wherein the curing resin of the seal material is cured to have a curing ratio of 50% or more after said first process and a curing ratio of 80% or more after said second process.