US5552913A
Expired / Lapsed
US
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Liquid crystal device and method for producing the same
Assignee: Semiconductor Energy Laboratory Co Ltd
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Filing: 1994-06-01
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Granted: 1996-09-03
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Expires: 2014-06-01
Abstract
Abstract In a liquid crystal device using a ferroelectric liquid crystal, in the case that a liquid crystal material is injected in a space between a pair of substrates (at least one of the substrates having an alignment film), a liquid crystal mixture of a liquid crystal material and an uncured resin material having a hydrophilicity is injected in the space from an injection inlet formed between the substrates. By the above process, the uncured resin material is remained in the vicinity of the injection inlet, and the space is filled with the liquid crystal material. Subsequently, the resin material is cured to seal the injection inlet. Further, a space between a pair of the substrates is filled with a mixture of the liquid crystal material, the uncured resin material and spacer particles, the liquid crystal material is oriented, the uncured resin material is precipitated from the mixture and cured, and the liquid crystal material and the spacer particles are removed. Subsequently, the liquid crystal material (or a mixture of the liquid crystal material and the uncured resin material) is again injected in the space, the liquid crystal material is oriented, and the uncured resin material is precipitated to be cured.
Inventors
- 👤 Michio Shimizu
- 👤 Toshimitsu Konuma
- 👤 Takeshi Nishi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 15:50
CPC Classifications
G; G02; G02F; G02F1/00; G02F1/01; G02F1/13; G02F1/133; G02F1/1333; G02F1/1341
Claims Analysis
Total Claims: 24
Claim 1
Independent Claim
95 words
A method for producing a liquid crystal device, comprising the steps of: injecting a mixture of a liquid crystal material and an uncured resin material having a hydrophilicity from an injection inlet formed between a pair of substrates, to hold the uncured resin material in a vicinity of an inside of the injection inlet and fill a space between the substrates with the liquid crystal material, and curing the uncured resin material, to seal the injection inlet, wherein aligning means for orienting the liquid crystal material is formed on at least one of the substrates.
Claim 2
Independent Claim
95 words
A method for producing a liquid crystal device, comprising the steps of: injecting a mixture of a liquid crystal material and an uncured resin material having a hydrophilicity from an injection inlet formed between a pair of substrates, to hold the uncured resin material in a vicinity of an inside of the injection inlet and fill a space between the substrates with the liquid crystal material, and curing the uncured resin material, to seal the injection inlet, wherein aligning means for orienting the liquid crystal material is formed on at least one of the substrates.
Claim 3
Dependent Claim
26 words
The method of claim 1, wherein the step for curing the uncured resin material comprises a step for irradiating the uncured resin material with ultraviolet ray.
Claim 4
Dependent Claim
14 words
The method of claim 1, wherein the liquid crystal material comprises a ferroelectric material.
Claim 5
Independent Claim
92 words
A method for producing a liquid crystal device, comprising the steps of: injecting a mixture of a liquid crystal material and an uncured resin material from an injecting inlet formed between a pair of substrates; irradiating an alignment film placed in a vicinity of an inside of the injection inlet with a radiation, to hold the uncured resin material in the vicinity of the inside of the injection inlet and fill a space between the substrates with the liquid crystal material; and curing the uncured resin material, to seal the injection inlet.
Claim 6
Independent Claim
92 words
A method for producing a liquid crystal device, comprising the steps of: injecting a mixture of a liquid crystal material and an uncured resin material from an injecting inlet formed between a pair of substrates; irradiating an alignment film placed in a vicinity of an inside of the injection inlet with a radiation, to hold the uncured resin material in the vicinity of the inside of the injection inlet and fill a space between the substrates with the liquid crystal material; and curing the uncured resin material, to seal the injection inlet.
Claim 7
Dependent Claim
16 words
The method of claim 4, wherein the radiation comprises a ultraviolet ray or a laser beam.
Claim 8
Dependent Claim
26 words
The method of claim 4, wherein the step for curing the uncured resin material comprises a step for irradiating the uncured resin material with ultraviolet ray.
Claim 9
Dependent Claim
14 words
The method of claim 4, wherein the liquid crystal material comprises a ferroelectric material.
Claim 10
Dependent Claim
15 words
The method of claim 4, further comprising a step for orienting the liquid crystal material.
Claim 11
Independent Claim
115 words
A method for producing a liquid crystal device, comprising the steps of: injecting a mixture of a liquid crystal material, an uncured resin material having a hydrophilicity and an uncured resin material having a hydrophobicity from an injection inlet formed between a pair of substrates, to hold the uncured resin material having the hydrophilicity in a vicinity of an inside of the injection inlet and fill a space between the substrates with the liquid crystal material; orienting the liquid crystal material filled in the space; scattering and precipitating the uncured resin material having the hydrophobicity in the space; and curing the uncured resin material having the hydrophilicity and the uncured resin material having the hydrophobicity.
Claim 12
Independent Claim
115 words
A method for producing a liquid crystal device, comprising the steps of: injecting a mixture of a liquid crystal material, an uncured resin material having a hydrophilicity and an uncured resin material having a hydrophobicity from an injection inlet formed between a pair of substrates, to hold the uncured resin material having the hydrophilicity in a vicinity of an inside of the injection inlet and fill a space between the substrates with the liquid crystal material; orienting the liquid crystal material filled in the space; scattering and precipitating the uncured resin material having the hydrophobicity in the space; and curing the uncured resin material having the hydrophilicity and the uncured resin material having the hydrophobicity.
Claim 13
Dependent Claim
26 words
The method of claim 9, wherein the step for curing the uncured resin materials comprises a step for irradiating the uncured resin materials with ultraviolet ray.
Claim 14
Independent Claim
75 words
A method for producing a liquid crystal device, comprising the steps of: filling a space between a pair of substrates with a mixture of a liquid crystal material, an uncured resin material and spacer particles; orienting the liquid crystal material; precipitating the uncured resin material from the mixture; curing the precipitated uncured resin material; removing the liquid crystal material and other spacer particles from the mixture; and filling the space with another liquid crystal material.
Claim 15
Independent Claim
75 words
A method for producing a liquid crystal device, comprising the steps of: filling a space between a pair of substrates with a mixture of a liquid crystal material, an uncured resin material and spacer particles; orienting the liquid crystal material; precipitating the uncured resin material from the mixture; curing the precipitated uncured resin material; removing the liquid crystal material and other spacer particles from the mixture; and filling the space with another liquid crystal material.
Claim 16
Dependent Claim
26 words
The method of claim 11, wherein the step for curing the uncured resin material comprises a step for irradiating the uncured resin material with ultraviolet ray.
Claim 17
Dependent Claim
23 words
The method of claim 11, wherein the step for curing the uncured resin material comprises a step for heating the uncured resin material.
Claim 18
Dependent Claim
37 words
The method of claim 11, further comprising the steps of: filling an uncured another resin material; orienting the filled another liquid crystal material; precipitating the uncured another resin material; and curing the precipitated uncured another resin material.
Claim 19
Dependent Claim
22 words
The method of claim 11, wherein the removing step comprises a step of peeling one of the substrates from the other substrate.
Claim 20
Independent Claim
93 words
A method for producing a liquid crystal device having a pair of substrates, wherein a liquid crystal material is held in a space between the substrates, the method comprising the steps of: orienting the liquid crystal material; and performing at the same process a sealing of an injection inlet which is formed between the substrates and from which the liquid crystal material is injected to the space and maintaining of a substrate interval of the substrates, wherein a hydrophilic resin material and a hydrophobic resin material are mixed with the liquid crystal material.
Claim 21
Independent Claim
93 words
A method for producing a liquid crystal device having a pair of substrates, wherein a liquid crystal material is held in a space between the substrates, the method comprising the steps of: orienting the liquid crystal material; and performing at the same process a sealing of an injection inlet which is formed between the substrates and from which the liquid crystal material is injected to the space and maintaining of a substrate interval of the substrates, wherein a hydrophilic resin material and a hydrophobic resin material are mixed with the liquid crystal material.
Claim 22
Dependent Claim
14 words
The method of claim 16, wherein the liquid crystal material comprises a ferroelectric material.
Claim 23
Dependent Claim
45 words
The method of claim 16, wherein the sealing of the injection inlet is performed by the hydrophilic resin material mixed with the liquid crystal material, and the maintaining of the substrate interval is performed by the hydrophobic resin material mixed with the liquid crystal material.
Claim 24
Dependent Claim
25 words
The method of claim 16, wherein each of the hydrophilic resin material and the hydrophobic resin material are a resin curable by an ultraviolet ray.
References Cited (Backward Citations)
US4563059A
Cited
US4640583A
Cited
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