Liquid crystal display apparatus, manufacturing method thereof, and liquid crystal projector
A highly moisture-resistant liquid crystal display apparatus which is capable of suppressing display deterioration due to occurrence of image retention without impairing properties including gap controllability and alignment stability maintenance, and a manufacturing method thereof, are provided. The liquid crystal display apparatus includes: a first sealing member 15 arranged at an outer periphery of a liquid crystal layer 17 sandwiched between a pair of substrates 11 and 12 ; and a second sealing member 16 arranged at an outer periphery of the first sealing member 15 in contact with the pair of substrates 11 and 12 . The second sealing member 16 is formed from an alkylsiloxane compound as a main ingredient which is formed into an inorganic film by irradiation with an ultraviolet radiation. The alkylsiloxane compound is a di-alkylsiloxane compound or di-methyl-siloxane compound.
1. A liquid crystal display apparatus comprising:
a first sealing member arranged at an outer periphery of a liquid crystal layer sandwiched between a pair of substrates; and
a second sealing member arranged at an outer periphery of the first sealing member in contact with the pair of substrates,
wherein the second sealing member is formed from an alkylsiloxane compound as a main ingredient which is at a state of an alkylsiloxane structure at a temperature equal to or lower than a glass transition temperature of the first sealing member, and which is formed into an inorganic film by irradiation with an ultraviolet radiation.
2. The liquid crystal display apparatus according to claim 1 , wherein the first sealing member includes an injection region in which an injection region sealing member is inserted, the alkysiloxane compound is at a state of the alkysiloxane structure at a temperature equal to or lower than a glass transition temperature of the injection region sealing member, and the second sealing member covers an outer periphery of the first sealing member and also an outer periphery of the injection region sealing member, and contacts the pair of substrates.
3. The liquid crystal display apparatus according to claim 1 , wherein the alkylsiloxane compound is a di-alkylsiloxane compound, or di-methyl-siloxane compound.
4. The liquid crystal display apparatus according to claim 1 , wherein the alkylsiloxane compound is a di-methyl-silicone.
5. The liquid crystal display apparatus according to claim 1 , wherein one of the pair of substrates is a single crystalline semiconductor substrate having, inside of the first sealing member, an effective pixel region wherein a plurality of pixels each including a switching element and a reflective electrode are arranged in a two-dimensional array.
6. The liquid crystal display apparatus according to claim 1 , wherein the pair of substrates have, at opposing surfaces thereof, alignment films respectively, at least one of the alignment films of the pair of substrates is arranged in contact with the inorganic film, and the alignment film and the inorganic film are formed from the same material.
7. The liquid crystal display apparatus according to claim 1 , wherein the inorganic film is silicon oxide.
8. A liquid crystal projector comprising:
a liquid crystal display apparatus according to claim 1 .
9. A method of manufacturing a liquid crystal display apparatus comprising:
a first step of injecting a liquid crystal into a space defined by a pair of substrates and a first sealing member bonding together the pair of substrates to form a first structure; and
a second step of forming an alkylsiloxane compound which is at a state of an alkylsiloxane structure at a temperature equal to or lower than a glass transition temperature of the first sealing member at an outer periphery of the first sealing member in contact with the pair of substrates, and irradiating the alkylsiloxane compound with an ultraviolet radiation to set at the temperature equal to or lower than the glass transition temperature of the first sealing member to form a second structure having a second sealing member which is an inorganic film.
10. The method of manufacturing a liquid crystal display apparatus according to claim 9 , further comprising:
a third step of thermally treating the first structure at a temperature equal to or lower than a phase transition temperature from a liquid crystal phase to a liquid phase of the liquid crystal, after the first step before the second step,
wherein the first sealing member includes an injection region in which an injection region sealing member is inserted, the alkylsiloxane compound is at a state of the alkylsiloxane structure at a temperature equal to or lower than a glass transition temperature of the injection region sealing member, and
during the second step, the second sealing member is placed to cover an outer periphery of the first sealing member and also an outer periphery of the injection sealing member and to contact the pair of substrates.
11. The method of manufacturing a liquid crystal display apparatus according to claim 9 , further comprising:
a fourth step of thermally treating the second structure at a temperature equal to or lower than a phase transition temperature from a liquid crystal phase to a liquid phase of the liquid crystal, after the second step.