Process for producing liquid crystal display device and liquid crystal display device
View Patent ↗A process for producing a liquid crystal display device enabling to produce with simple process, and such a liquid crystal display device, are provided. A process for producing a liquid crystal display device comprising: a step of forming transparent electrodes ( 41, 42 ) on first and second substrates ( 11, 12 ); a step of applying an uncured raw seal material; a step of dropping a first functional material; a step of dropping a second functional material; a step of sandwiching the raw seal material ( 13 a, 14 a ), the first functional material ( 32 a ) and the second functional material ( 31 a ) between the first and second substrates under a predetermined reduced pressure atmosphere, and thereby forming a sealed product wherein the first functional material is isolated from the second functional material by the raw seal material and sealed between the first and the second substrates; a step of exposing the sealed product to a normal atmospheric pressure; and a step of curing at least the raw seal material.
1. A liquid crystal display device, comprising first and second substrates that are disposed so as to oppose each other and each having a transparent electrode;
a first seal material for forming a first space between the first and second substrates;
a second seal material for forming a second space between the first and second substrates;
a composite layer positioned in the first space and containing liquid crystal and a cured product; and
a transparent resin layer provided in the second space and containing no liquid crystal;
wherein the composite layer and the first and second seal materials each has a visible light transmittance of at least 70% in a transparent state;
the second space enclosed by the first and second substrates and the first and second seal materials is filled with the transparent resin layer without gap; and
wherein the second space is larger than the first space.
2. The liquid crystal display device according to claim 1 , wherein the seal material comprises a polyene-polythiol system polymer.
3. The liquid crystal display device according to claim 1 , wherein an absolute value of the difference between a haze value of the first and second seal materials and a haze value of the composite layer in a transparent state is at most 3%.
4. The liquid crystal display device according to claim 1 , wherein the composite layer shows a scattering state at a time of voltage application and the composite layer shows a transparent state at a time of no voltage application.
5. The liquid crystal display device according to claim 4 , wherein the transparent resin layer has a visible light transmittance of at least 70%, and
at a time of no voltage application, the composite layer shows a transparent state and the entire liquid crystal display device becomes transparent.
6. The liquid crystal display device according to claim 1 , wherein the transparent resin layer, the first seal material, and the second seal material comprise a UV curable resin.
7. The liquid crystal display device according to claim 1 , wherein the transparent resin layer, the first seal material and the second seal material comprise a thermosetting resin.