Method for manufacturing liquid crystal display device

摘要

It is an object to provide a method for manufacturing a liquid crystal display device including a liquid crystal layer which exhibits a stable blue phase. The following steps are performed: a first step of forming a thermosetting first sealant so as to form a frame over a first substrate; a second step of forming a photocurable and thermosetting second sealant on an outer side than the first sealant over the first substrate; a third step of dropping a liquid crystal material which exhibits a blue phase at a given temperature on an inner side than the first sealant; a fourth step of attaching a second substrate to the first substrate in a reduced-pressure atmosphere; a fifth step of performing polymer stabilization treatment on the liquid crystal material; and a sixth step of curing the first sealant through heat treatment.

主权项

1. A method for manufacturing a liquid crystal display device, comprising the steps of:
forming a first sealant so as to form a frame over a first substrate; forming a second sealant so as to form a frame over a second substrate; after forming the first sealant, pre-curing the first sealant through a first heat treatment; after pre-curing the first sealant, dropping a liquid crystal material on an inner side of the first sealant; after dropping the liquid crystal material, attaching the second substrate to the first substrate in a reduced-pressure atmosphere with the first sealant, the second sealant and the liquid crystal material interposed therebetween so that the second sealant is outside of and apart from the first sealant, wherein the liquid crystal material is not in contact with the first sealant; performing polymer stabilization treatment including a second heat treatment on the liquid crystal material interposed between the first substrate and the second substrate, wherein viscosity of each of the liquid crystal material and the second sealant is reduced by the second heat treatment, whereby the liquid crystal material spreads to be in contact with the first sealant and a width of the second sealant is increased, and wherein the polymer stabilization treatment is performed before the second sealant is pre-cured; curing the first sealant through a third heat treatment; and cutting the first substrate and the second substrate between the first sealant and the second sealant, wherein the first sealant is a thermosetting sealant, and wherein the second sealant is a photocurable and thermosetting sealant.