US5473450A
Expired / Lapsed
US
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Liquid crystal display device with a polymer between liquid crystal regions
Assignee: Sharp Corp
•
Filing: 1993-04-27
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Granted: 1995-12-05
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Expires: 2013-04-27
Abstract
Abstract A liquid crystal display device of the present invention includes: two substrates facing each other, at least one of the substrates being transparent; electrodes disposed on inside surfaces of the respective substrates; a display medium which is provided between the two substrates and formed of polymer walls containing a polymer as their main component and liquid crystal regions containing liquid crystal as their main component; and a plurality of pixels, wherein the liquid crystal regions are partitioned by the polymer walls and are close to the substrates, portions of the liquid crystal regions close to the substrates being in parallel with the substrates, an interval a between the center of one liquid crystal region and the center of an adjacent liquid crystal region in a direction along the surface of the substrate is within a width of one pixel along the direction, and 80% or more of the intervals a satisfy the relationship: 3b/2>a>b/2, where b is an average of the intervals a.
Inventors
- 👤 Nobuaki Yamada
- 👤 Tomoaki Kuratate
- 👤 Tokihiko Shinomiya
- 👤 Toshiyuki Hirai
- 👤 Kohichi Fujimori
- 👤 Masahiko Kondo
- 👤 Noriaki Onishi
- 👤 Shuichi Kohzaki
- 👤 Kenji Majima
- 👤 Katunobu Awane
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 23:38
CPC Classifications
G; G02; G02F; G02F1/00; G02F1/01; G02F1/13; G02F1/133; G02F1/1333; G02F1/133377; G02F1/1337; G02F1/133711; G02F1/133753; G02F1/133757
Claims Analysis
Total Claims: 103
Claim 1
Independent Claim
118 words
A liquid crystal display device comprising: two substrates facing each other, at least one of the substrates being transparent; electrodes disposed on inside surfaces of the respective substrates; a display medium which is provided between the two substrates and formed of polymer walls and liquid crystal regions partitioned by the polymer walls; and a plurality of pixels, wherein an interval a between a center of one liquid crystal region and a center of an adjacent liquid crystal region in a direction along a surface of the substrate is within a width of one pixel along the direction, and 80% or more of the intervals a satisfy the relationship: 3b/2>a>b/2, where b is an average of the intervals a.
Claim 2
Dependent Claim
118 words
A liquid crystal display device comprising: two substrates facing each other, at least one of the substrates being transparent; electrodes disposed on inside surfaces of the respective substrates; a display medium which is provided between the two substrates and formed of polymer walls and liquid crystal regions partitioned by the polymer walls; and a plurality of pixels, wherein an interval a between a center of one liquid crystal region and a center of an adjacent liquid crystal region in a direction along a surface of the substrate is within a width of one pixel along the direction, and 80% or more of the intervals a satisfy the relationship: 3b/2>a>b/2, where b is an average of the intervals a.
Claim 3
Independent Claim
112 words
A method for manufacturing a liquid crystal display device having a plurality of pixels, comprising the steps of: providing a mixture containing a photopolymerizable compound and a liquid crystal material between a pair of substrates, two substrates facing each other, at least one of the substrates being transparent, electrodes being disposed on inside surfaces of the respective substrates; and irradiating light to the mixture with a light intensity distribution in which light intensity of at least one portion of each pixel is 90% or less of a maximum illuminance in a circular area which corresponds to 10 times the pixel area and whose center is situated in a center of the pixel.
Claim 4
Independent Claim
112 words
A method for manufacturing a liquid crystal display device having a plurality of pixels, comprising the steps of: providing a mixture containing a photopolymerizable compound and a liquid crystal material between a pair of substrates, two substrates facing each other, at least one of the substrates being transparent, electrodes being disposed on inside surfaces of the respective substrates; and irradiating light to the mixture with a light intensity distribution in which light intensity of at least one portion of each pixel is 90% or less of a maximum illuminance in a circular area which corresponds to 10 times the pixel area and whose center is situated in a center of the pixel.
Claim 5
Dependent Claim
41 words
A method for manufacturing a liquid crystal display device according to claim 2, wherein a photomask having a pattern with regularity is placed on the transparent substrate, and light is irradiated through the photomask to the mixture provided between the substrates.
Claim 6
Dependent Claim
35 words
A method for manufacturing a liquid crystal display device according to claim 3, wherein the pattern with regularity is formed on the photomask, and the pattern covers 30% or more of at least each pixel.
Claim 7
Dependent Claim
74 words
A method for manufacturing a liquid crystal display device according to claim 3, wherein the pattern with regularity is formed on the photomask, a minimum repeating unit of the pattern has a size within a circle having a diameter in the range of 1 μm to 50 μm, and an interval between a center of one unit and a center of an adjacent unit is in the range of 1 μm to 50 μm.
Claim 8
Dependent Claim
42 words
A method for manufacturing a liquid crystal display device according to claim 2, wherein the photomask having a pattern with regularity is placed inside one of the substrates, and light is irradiated through the photomask to the mixture provided between the substrates.
Claim 9
Dependent Claim
35 words
A method for manufacturing a liquid crystal display device according to claim 6, wherein the pattern with regularity is formed on the photomask, and the pattern covers 30% or more of at least each pixel.
Claim 10
Dependent Claim
74 words
A method for manufacturing a liquid crystal display device according to claim 7, wherein the pattern with regularity is formed on the photomask, a minimum repeating unit of the pattern has a size within a circle having a diameter in the range of 1 μm to 50 μm, and an interval between a center of one unit and a center of an adjacent unit is in the range of 1 μm to 50 μm.
Claim 11
Dependent Claim
95 words
A liquid crystal display device comprising: two substrates facing each other, at least one of the substrates being transparent, electrodes disposed on inside surfaces of the respective substrates; and a display medium which is provided between the two substrates and formed of polymer walls containing a polymer as their main component and liquid crystal regions containing liquid crystal as their main component; wherein the liquid crystal regions are partitioned by the polymer walls and are close to the substrates, portions of the liquid crystal regions close to the substrates being in parallel with the substrates.
Claim 12
Dependent Claim
95 words
A liquid crystal display device comprising: two substrates facing each other, at least one of the substrates being transparent, electrodes disposed on inside surfaces of the respective substrates; and a display medium which is provided between the two substrates and formed of polymer walls containing a polymer as their main component and liquid crystal regions containing liquid crystal as their main component; wherein the liquid crystal regions are partitioned by the polymer walls and are close to the substrates, portions of the liquid crystal regions close to the substrates being in parallel with the substrates.
Claim 13
Dependent Claim
44 words
A liquid crystal display device according to claim 9, wherein an orientation direction of a plurality of liquid crystal molecules contained in each of the liquid crystal regions is concentric along the polymer walls within a plane which is in parallel with the substrates.
Claim 14
Dependent Claim
50 words
A liquid crystal display device according to claim 9, wherein each of the liquid crystal regions has a plurality of liquid crystal domains and an orientation direction of each of the liquid crystal domains is concentric along the polymer walls within a plane which is in parallel with the substrates.
Claim 15
Dependent Claim
77 words
A liquid crystal display device according to claim 9, wherein each of the liquid crystal regions has an inside liquid crystal domain situated in a center thereof, a polymer region surrounding an outside of the inside liquid crystal domain, and a plurality of outside liquid crystal domains surrounding an outside of the polymer region; and the respective outside liquid crystal domains are aligned in a radial manner within a plane which is in parallel with the substrates.
Claim 16
Dependent Claim
44 words
A liquid crystal display device according to claim 9, wherein the liquid crystal regions have a plurality of liquid crystal domains, and an orientation direction of each of the liquid crystal domains is different within a plane which is in parallel with the substrates.
Claim 17
Dependent Claim
59 words
A liquid crystal display device according to claim 9, wherein the liquid crystal regions have a polymer region positioned in the center thereof and a plurality of liquid crystal domains surrounding an outside of the polymer region, and the respective liquid crystal domains are aligned in a radial manner within a plane which is in parallel with the substrates.
Claim 18
Dependent Claim
26 words
A liquid crystal display device according to claim 9, comprising a plurality of pixels, wherein the liquid crystal regions are provided in at least one pixel.
Claim 19
Dependent Claim
34 words
A liquid crystal display device according to claim 15, wherein at least one liquid crystal region contained in the at least one pixel has a size of 30% or more of the pixel size.
Claim 20
Dependent Claim
44 words
A liquid crystal display device according to claim 15, wherein an orientation direction of a plurality of liquid crystal molecules contained in each of the liquid crystal regions is concentric along the polymer walls within a plane which is in parallel with the substrates.
Claim 21
Dependent Claim
50 words
A liquid crystal display device according to claim 15, wherein each of the liquid crystal regions has a plurality of liquid crystal domains, and an orientation direction of each of the liquid crystal domains is concentric along the polymer walls within a plane which is in parallel with the substrates.
Claim 22
Dependent Claim
75 words
A liquid crystal display device according to claim 15, wherein the liquid crystal regions have an inside liquid crystal domain positioned in a center thereof, a polymer region surrounding an outside of the inside liquid crystal domain, and a plurality of outside liquid crystal domains surrounding an outside of the polymer region; and the respective outside liquid crystal domains are aligned in a radial manner within a plane which is in parallel with the substrates.
Claim 23
Dependent Claim
44 words
A liquid crystal display device according to claim 15, wherein the liquid crystal regions have a plurality of liquid crystal domains, and an orientation direction of each of the liquid crystal domains is different within a plane which is in parallel with the substrates.
Claim 24
Dependent Claim
59 words
A liquid crystal display device according to claim 15, wherein the liquid crystal regions have a polymer region positioned in a center thereof and a plurality of liquid crystal domains surrounding an outside of the polymer region; and the respective liquid crystal domains are aligned in a radial manner within a plane which is in parallel with the substrates.
Claim 25
Dependent Claim
31 words
A liquid crystal display device according to claim 9, comprising a plurality of pixels, wherein two or more of the liquid crystal regions are entirely or partially provided in one pixel.
Claim 26
Dependent Claim
21 words
A liquid crystal display device according to claim 22, wherein the pixel has a longitudinal side of 200 μm or more.
Claim 27
Dependent Claim
42 words
A liquid crystal display device according to claim 22, wherein an orientation direction of a plurality of liquid crystal molecules contained in the liquid crystal regions are concentric along the polymer walls within a plane which is in parallel with the substrates.
Claim 28
Dependent Claim
50 words
A liquid crystal display device according to claim 22, wherein each of the liquid crystal regions has a plurality of liquid crystal domains, and an orientation direction of each of the liquid crystal domains is concentric along the polymer walls within a plane which is in parallel with the substrates.
Claim 29
Dependent Claim
76 words
A liquid crystal display device according to claim 22, wherein each of the liquid crystal domains has an inside liquid crystal domain positioned in a center thereof, a polymer region surrounding an outside of the inside liquid crystal domain, and a plurality of liquid crystal domains surrounding an outside of the polymer region; and the respective outside liquid crystal domains are aligned in a radial manner within a plane which is in parallel with the substrates.
Claim 30
Dependent Claim
44 words
A liquid crystal display device according to claim 22, wherein the liquid crystal region has a plurality of liquid crystal domains, and an orientation direction of each of the liquid crystal domains is different within a plane which is in parallel with the substrates.
Claim 31
Dependent Claim
61 words
A liquid crystal display device according to claim 22, wherein each of the liquid crystal regions has a polymer region positioned in a center thereof and a plurality of liquid crystal domains surrounding an outside of the polymer region, and the respective liquid crystal domains are aligned in a radial manner within a plane which is in parallel with the substrates.
Claim 32
Dependent Claim
42 words
A liquid crystal display device according to claim 9, wherein a plurality of liquid crystal molecules contained in each of the liquid crystal regions are aligned in a helical manner along a helical axis which is vertical with respect to the substrates.
Claim 33
Dependent Claim
36 words
A liquid crystal display device according to claim 29, wherein the plurality of .liquid crystal molecules contained in each of the liquid crystal regions are provided with a helical pitch of 15 μm to 100 μm.
Claim 34
Dependent Claim
60 words
A liquid crystal display device according to claim 9, wherein d×Δn is in the range of 0.4 μm to 1.1 μm; and a distance between the substrates is in the range of 3 μm to 10 μm, where d is a thickness between horizontal portions in each of the liquid crystal regions and Δn is anisotropy of refractive index thereof.
Claim 35
Dependent Claim
39 words
A liquid crystal display device according to claim 9, wherein the display medium has a structure in which a liquid crystalline compound is fixed in the vicinity of an interface between the liquid crystal region and the polymer wall.
Claim 36
Dependent Claim
42 words
A liquid crystal display device according to claim 32, wherein anisotropy of dielectric constant Δε L of the liquid crystal region and anisotropy of dielectric constant Δε p of the liquid crystalline compound have a relationship of Δε L ×Δε p <0.
Claim 37
Dependent Claim
52 words
A liquid crystal display device according to claim 32, wherein the liquid crystalline compound has at least one of a fluorine atom and a chlorine atom and the liquid crystal region is formed from a liquid crystal material having at least one of fluorine atom and a chlorine atom in its molecule.
Claim 38
Dependent Claim
33 words
A liquid crystal display device according to claim 34, wherein the liquid crystalline compound has an optically active group in its molecule and the liquid crystal region is formed from ferroelectric liquid crystal.
Claim 39
Dependent Claim
20 words
A liquid crystal display device according to claim 32, wherein the polymer walls are formed in a liquid crystal state.
Claim 40
Dependent Claim
22 words
A liquid crystal display device according to claim 36, wherein the liquid crystal regions and the polymer walls contain a dichroic dye.
Claim 41
Dependent Claim
43 words
A liquid crystal display device according to claim 32, wherein the polymer walls are formed in a liquid crystal state, and the polymer walls and the liquid crystal regions are in the same orientation when no voltage is applied to the display medium.
Claim 42
Dependent Claim
45 words
A liquid crystal display device according to claim 38, wherein at least one of the substrates has an orientation film in contact with the display medium, and the polymer walls and the liquid crystal regions are in the same orientation, based on the orientation film.
Claim 43
Dependent Claim
22 words
A liquid crystal display device according to claim 39, wherein the liquid crystal regions and the polymer walls contain a dichroic dye.
Claim 44
Dependent Claim
42 words
A liquid crystal display device according to claim 9, wherein anisotropy of dielectric constant Δ L of the liquid crystal region and anisotropy of dielectric constant Δε p of the liquid crystalline compound have a relationship of Δε L ×Δε p <0.
Claim 45
Dependent Claim
48 words
A liquid crystal display device according to claim 9, wherein a remaining monomer ratio obtained from infrared absorption caused by a double bond between carbons in the polymer wall and infrared absorption caused by a carbonyl group of an ester in the polymer wall is 10% or less.
Claim 46
Dependent Claim
42 words
A liquid crystal display device according to claim 9, wherein a light-intercepting mask is placed on one of the substrates so that light-intercepting portions of the mask cover portions where the substrate and the polymer walls are in contact with each other.
Claim 47
Dependent Claim
42 words
A liquid crystal display device according to claim 43, wherein the light-intercepting mask is placed so that the light-intercepting portions thereof cover 50% or more of the respective portions where the substrate and the polymer walls are in contact with each other.
Claim 48
Dependent Claim
22 words
A liquid crystal display device according to claim 9, wherein orientation films are respectively formed on the electrodes mounted on the substrates.
Claim 49
Dependent Claim
20 words
A liquid crystal display device according to claim 45, wherein the orientation films are uniaxially aligned by an orientation treatment.
Claim 50
Dependent Claim
21 words
A liquid crystal display device according to claim 45, wherein at least one of the orientation films contain a photopolymerization initiator.
Claim 51
Dependent Claim
23 words
A liquid crystal display device according to claim 9, wherein a polarizing plate is provided outside of at least one of the substrates.
Claim 52
Independent Claim
116 words
A method for manufacturing a liquid crystal display device having a plurality of pixels, comprising the steps of: providing a mixture containing a photopolymerizable compound and a liquid crystal material between a pair of substrates, two substrates facing each other, at least one of the substrates being transparent, and electrodes being disposed on inside surfaces of the respective substrates, thereby forming a cell; and irradiating the mixture with light under the condition that intensity of light is reduced in predetermined portions of the mixture, thereby forming a display medium between the substrates, the display medium having polymer walls containing a polymer as their main component and liquid crystal regions containing liquid crystal as their main component.
Claim 53
Independent Claim
116 words
A method for manufacturing a liquid crystal display device having a plurality of pixels, comprising the steps of: providing a mixture containing a photopolymerizable compound and a liquid crystal material between a pair of substrates, two substrates facing each other, at least one of the substrates being transparent, and electrodes being disposed on inside surfaces of the respective substrates, thereby forming a cell; and irradiating the mixture with light under the condition that intensity of light is reduced in predetermined portions of the mixture, thereby forming a display medium between the substrates, the display medium having polymer walls containing a polymer as their main component and liquid crystal regions containing liquid crystal as their main component.
Claim 54
Dependent Claim
35 words
A method for manufacturing a liquid crystal display device according to claim 49, wherein the predetermined portions correspond to at least one pixel, whereby the liquid crystal regions are provided in at least one pixel.
Claim 55
Dependent Claim
51 words
A method for manufacturing a liquid crystal display device according to claim 49, wherein an area of each of the predetermined portions corresponds to 30% or more of each pixel area, whereby at least one liquid crystal region contained in the pixel is made 30% or more of the pixel area.
Claim 56
Dependent Claim
40 words
A method for manufacturing a liquid crystal display device according to claim 49, wherein means for reducing intensity of light is a photomask, and the photomask is placed on the side of the display medium of one of the substrates.
Claim 57
Dependent Claim
73 words
A method for manufacturing a liquid crystal display device according to claim 49, wherein the mixture is irradiated with light through a photomask, the photomask having a plurality of masking portions for forming the liquid crystal regions and each of the masking portion having at least one light transmission hole at least in a center thereof, whereby liquid crystal domains are formed in a radial manner in each of the liquid crystal regions.
Claim 58
Dependent Claim
52 words
A method for manufacturing a liquid crystal display device according to claim 53, using a photomask having masking portions for forming the liquid crystal regions, each of the masking portions having a light transmission hole in a center thereof and light transmission slits disposed in a radial manner around the transmission hole.
Claim 59
Dependent Claim
30 words
A method for manufacturing a liquid crystal display device according to claim 49, wherein the mixture is irradiated with light while alternating a light-irradiating period and a non light-irradiating period.
Claim 60
Dependent Claim
25 words
A method for manufacturing a liquid crystal display device according to claim 49, wherein the mixture further contains a compound having effects for suppressing photopolymerization.
Claim 61
Dependent Claim
56 words
A method for manufacturing a liquid crystal display device according to claim 49, wherein the display medium having walls containing a polymer as their main component and liquid crystal regions containing liquid crystal as their main component is formed between the substrates by irradiating light to all of the portions or part thereof excluding the pixels.
Claim 62
Dependent Claim
32 words
A method for manufacturing a liquid crystal display device according to claim 57, wherein light which is irradiated to all of the portions or part thereof excluding the pixels is linear light.
Claim 63
Dependent Claim
38 words
A method for manufacturing a liquid crystal display device according to claim 57, wherein light irradiation to all of the portions or part thereof excluding the pixels is conducted while spot light in a dot shape is moved.
Claim 64
Dependent Claim
81 words
A method for manufacturing a liquid crystal display device according to claim 49, wherein means for reducing intensity of light is an insulating film formed on the electrode of one of the substrates, and the display medium having walls containing a polymer as its main component and liquid crystal regions containing liquid crystal as its main component is formed between the substrates by irradiating light to the mixture from the side of the substrate on which the insulating film is formed.
Claim 65
Dependent Claim
36 words
A method for manufacturing a liquid crystal display device according to claim 49, wherein the step of forming a cell is conducted by attaching the two substrates after providing the mixture on one of the substrates.
Claim 66
Dependent Claim
25 words
A method for manufacturing a liquid crystal display device according to claim 49, wherein polarizing plates are formed on external surfaces of the two substrates.
Claim 67
Independent Claim
128 words
A method for manufacturing a liquid crystal display device having a plurality of pixels, comprising the steps of: forming an orientation film containing a photopolymerization initiator on at least one of a pair of substrates, two substrates facing each other, at least one of the substrates being transparent, and electrodes being disposed on inside surfaces of the respective substrates; subjecting the substrate on which the orientation film is formed to a rubbing treatment in one direction; providing a mixture containing a photopolymerizable compound and a liquid crystal material between the pair of substrates after the rubbing treatment; and forming a display medium having polymer walls containing a polymer as their main component and liquid crystal regions containing liquid crystal as their main component by curing the photopolymerizable compound.
Claim 68
Independent Claim
128 words
A method for manufacturing a liquid crystal display device having a plurality of pixels, comprising the steps of: forming an orientation film containing a photopolymerization initiator on at least one of a pair of substrates, two substrates facing each other, at least one of the substrates being transparent, and electrodes being disposed on inside surfaces of the respective substrates; subjecting the substrate on which the orientation film is formed to a rubbing treatment in one direction; providing a mixture containing a photopolymerizable compound and a liquid crystal material between the pair of substrates after the rubbing treatment; and forming a display medium having polymer walls containing a polymer as their main component and liquid crystal regions containing liquid crystal as their main component by curing the photopolymerizable compound.
Claim 69
Dependent Claim
36 words
A method for manufacturing a liquid crystal display device according to claim 63, wherein the photopolymerizable compound contained in the mixture contains a liquid crystalline compound having at least one polymerizable functional group in its molecule.
Claim 70
Dependent Claim
68 words
A method for manufacturing a liquid crystal display device according to claim 64, wherein a compound having a polymerizable functional group, at least one of a fluorine atom and a chlorine atom in its molecule is used as the liquid crystalline compound, and a liquid crystal material having at least one of a fluorine and a chlorine atom in its molecule is used for the liquid crystal regions.
Claim 71
Dependent Claim
47 words
A method for manufacturing a liquid crystal display device according to claim 65, wherein a compound having a polymerizable functional group and an optically active group in its molecule is used as the liquid crystalline compound, and ferroelectric liquid crystal is used for the liquid crystal regions.
Claim 72
Dependent Claim
42 words
A method for manufacturing a liquid crystal display device according to claim 63, wherein UV-rays are irradiated to the mixture so that portions where the liquid crystal regions are to be formed become weak light-irradiated regions, thereby optically polymerizing the photopolymerizable compound.
Claim 73
Dependent Claim
40 words
A method for manufacturing a liquid crystal display device according to claim 67, wherein means for forming weak light-irradiated regions is a photomask, and the photomask is placed on the side of the display medium of one of the substrates.
Claim 74
Dependent Claim
36 words
A method for manufacturing a liquid crystal display device according to claim 63, wherein the step of forming a cell is conducted by attaching the two substrates after providing the mixture on one of the substrates.
Claim 75
Dependent Claim
25 words
A method for manufacturing a liquid crystal display device according to claim 63, wherein polarizing plates are formed on external surfaces of the two substrates.
Claim 76
Independent Claim
122 words
A method for manufacturing a liquid crystal display device having a plurality of pixels, comprising the steps of: forming a thin film pattern containing a photopolymerization initiator on one surface of at least one of a pair of substrates, the substrates respectively having electrodes and at least one of the substrates being transparent; providing a mixture containing a polymerizable compound and a liquid crystal material between the pair of substrates, at least one of the substrates having the thin film pattern, thereby forming a cell; and forming a display medium between the substrates by curing the polymerizable compound, the display medium having polymer walls containing a polymer as their main component and liquid crystal regions containing liquid crystal as their main component.
Claim 77
Independent Claim
122 words
A method for manufacturing a liquid crystal display device having a plurality of pixels, comprising the steps of: forming a thin film pattern containing a photopolymerization initiator on one surface of at least one of a pair of substrates, the substrates respectively having electrodes and at least one of the substrates being transparent; providing a mixture containing a polymerizable compound and a liquid crystal material between the pair of substrates, at least one of the substrates having the thin film pattern, thereby forming a cell; and forming a display medium between the substrates by curing the polymerizable compound, the display medium having polymer walls containing a polymer as their main component and liquid crystal regions containing liquid crystal as their main component.
Claim 78
Dependent Claim
70 words
A method for manufacturing a liquid crystal display device according to claim 71, wherein the polymerization initiator is a photopolymerization initiator, the polymerizable compound is a photopolymerizable compound, a photomask allowing 50% or more of the thin film pattern to be exposed is placed outside of one of the substrates, and light is irradiated to the photopolymerizable initiator and the photopolymerizable compound through the photomask to cure the photopolymerizable compound.
Claim 79
Dependent Claim
38 words
A method for manufacturing a liquid crystal display device according to claim 72, wherein the photopolymerizable compound contained in the mixture contains a liquid crystalline compound having at least one kind of polymerizable functional group at its molecule.
Claim 80
Dependent Claim
70 words
A method for manufacturing a liquid crystal display medium according to claim 73, wherein a compound having a polymerizable functional group, and at least one of a fluorine atom and a chlorine atom in its molecule is used as the liquid crystalline compound; and a liquid crystal material having at least one of a fluorine atom and a chlorine atom in its molecule is used for the liquid crystal regions.
Claim 81
Dependent Claim
47 words
A method for manufacturing a liquid crystal display device according to claim 73, wherein a compound having a polymerizable functional group and an optically active group in its molecule is used as the liquid crystalline compound and ferroelectric liquid crystal is used for the liquid crystal regions.
Claim 82
Dependent Claim
42 words
A method for manufacturing a liquid crystal display device according to claim 71, wherein UV-rays are irradiated to the mixture so that portions where the liquid crystal regions are to be formed become weak light-irradiated regions, thereby optically polymerizing the polymerizable compound.
Claim 83
Dependent Claim
46 words
A method for manufacturing a liquid crystal display device according to claim 71, wherein the polymerization initiator is a heat polymerization initiator, the polymerizable compound is a heat polymerizable compound, and the heat polymerization initiator and the mixture are heated to cure the heat polymerizable compound.
Claim 84
Dependent Claim
36 words
A method for manufacturing a liquid crystal display device according to claim 71, wherein the step of forming a cell is conducted by attaching the two substrates after providing the mixture on one of the substrates.
Claim 85
Dependent Claim
25 words
A method for manufacturing a liquid crystal display device according to claim 71, wherein polarizing plates are formed on external surfaces of the two substrates.
Claim 86
Independent Claim
170 words
A method for manufacturing a liquid crystal display device having a plurality of pixels, comprising the steps of: providing a mixture between a pair of substrates facing each other, thereby forming a cell, at least one of the substrates being transparent, electrodes being disposed on inside surfaces on the respective substrates, the mixture containing a liquid crystal material, a polymerizable liquid crystalline material having a liquid crystalline functional group in its molecule, a polymerizable compound, and a polymerization initiator, anisotropy of dielectric constant Δε L of the liquid crystal material and anisotropy of dielectric constant Δε p of the polymerizable liquid crystalline material having a relationship of Δε L ×Δε p <0, and forming a display medium between the substrates by polymerizing the polymerizable compound, the display medium having polymer walls containing a polymer as their main component and liquid crystal regions containing liquid crystal as their main component, providing the liquid crystalline functional groups in the liquid crystal regions to fix a liquid crystalline polymer on the polymer walls.
Claim 87
Independent Claim
170 words
A method for manufacturing a liquid crystal display device having a plurality of pixels, comprising the steps of: providing a mixture between a pair of substrates facing each other, thereby forming a cell, at least one of the substrates being transparent, electrodes being disposed on inside surfaces on the respective substrates, the mixture containing a liquid crystal material, a polymerizable liquid crystalline material having a liquid crystalline functional group in its molecule, a polymerizable compound, and a polymerization initiator, anisotropy of dielectric constant Δε L of the liquid crystal material and anisotropy of dielectric constant Δε p of the polymerizable liquid crystalline material having a relationship of Δε L ×Δε p <0, and forming a display medium between the substrates by polymerizing the polymerizable compound, the display medium having polymer walls containing a polymer as their main component and liquid crystal regions containing liquid crystal as their main component, providing the liquid crystalline functional groups in the liquid crystal regions to fix a liquid crystalline polymer on the polymer walls.
Claim 88
Dependent Claim
35 words
A method for manufacturing a liquid crystal display device according to claim 80, wherein the polymerizable compound is a photopolymerizable compound, the polymerization initiator is a photopolymerization initiator, and the polymerizable compound is optically polymerized.
Claim 89
Dependent Claim
41 words
A method for manufacturing a liquid crystal display device according to claim 81, wherein UV-rays are irradiated to the mixture so that portions where the liquid crystal regions are to be formed become weak light-irradiated regions, thereby optically polymerizing the mixture.
Claim 90
Dependent Claim
41 words
A method for manufacturing a liquid crystal display device according to claim 82, wherein means for forming the weak light-irradiated regions is a photomask, and the photomask is placed on the side of the display medium of one of the substrates.
Claim 91
Dependent Claim
38 words
A method for manufacturing a liquid crystal display device according to claim 80, wherein the polymerizable compound is a heat polymerizable compound, the polymerization initiator is a heat polymerization initiator, and the polymerizable compound is polymerized by heating.
Claim 92
Dependent Claim
44 words
A method for manufacturing a liquid crystal display device according to claim 80, wherein a compound having at least one of a fluorine atom and a chlorine atom in its molecule is used as the liquid crystal material and the polymerizable liquid crystalline material.
Claim 93
Dependent Claim
36 words
A method for manufacturing a liquid crystal display device according to claim 80, wherein the step of forming a cell is conducted by attaching the two substrates after providing the mixture on one of the substrates.
Claim 94
Dependent Claim
102 words
A method for manufacturing a liquid crystal display device according to claim 80, wherein the step of forming a cell comprises the steps of: coating the mixture onto one of the substrates, the mixture further containing a solvent capable of homogeneously dissolving the liquid crystal material and the polymerizable liquid crystalline material; removing the solvent from the mixture coated onto one of the substrates by evaporation to provide the liquid crystalline functional groups in the liquid crystal regions, thereby fixing a liquid crystalline compound on the polymer walls; and placing the other substrate on the substrate on which the mixture is coated.
Claim 95
Dependent Claim
25 words
A method for manufacturing a liquid crystal display device according to claim 80, wherein polarizing plates are formed on external surfaces of the two substrates.
Claim 96
Independent Claim
106 words
A method for manufacturing a liquid crystal display device having a plurality of pixels, comprising the steps of: providing a mixture between a pair of substrates facing each other, thereby forming a cell, at least one of the substrates being transparent, electrodes being disposed on inside surfaces of the respective substrates, the mixture containing a liquid crystal material, a photopolymerizable compound, a photopolymerization initiator, and a radical generating agent; irradiating light to the mixture to cause a phase separation, thereby obtaining a state in which liquid crystal regions are dispersed in the polymer walls; and thermally decomposing the radical generating agent by heating the display medium.
Claim 97
Independent Claim
106 words
A method for manufacturing a liquid crystal display device having a plurality of pixels, comprising the steps of: providing a mixture between a pair of substrates facing each other, thereby forming a cell, at least one of the substrates being transparent, electrodes being disposed on inside surfaces of the respective substrates, the mixture containing a liquid crystal material, a photopolymerizable compound, a photopolymerization initiator, and a radical generating agent; irradiating light to the mixture to cause a phase separation, thereby obtaining a state in which liquid crystal regions are dispersed in the polymer walls; and thermally decomposing the radical generating agent by heating the display medium.
Claim 98
Dependent Claim
42 words
A method for manufacturing a liquid crystal display device according to claim 89, wherein UV-rays are irradiated to the mixture so that portions where the liquid crystal regions are to be formed become weak light-irradiated regions, thereby optically polymerizing the polymerizable compound.
Claim 99
Dependent Claim
41 words
A method for manufacturing a liquid crystal display device according to claim 90, wherein means for forming the weak light-irradiated regions is a photomask, and the photomask is placed on the side of the display medium of one of the substrates.
Claim 100
Dependent Claim
36 words
A method for manufacturing a liquid crystal display device according to claim 89, wherein a liquid crystal material of at least one of a fluorine type and chlorine type is used as the liquid crystal material.
Claim 101
Dependent Claim
23 words
A method for manufacturing a liquid crystal display device according to claim 89, wherein the photopolymerizable compound contains a photopolymerizable liquid crystal compound.
Claim 102
Dependent Claim
36 words
A method for manufacturing a liquid crystal display device according to claim 89, wherein the step of forming a cell is conducted by attaching the two substrates after providing the mixture on one of the substrates.
Claim 103
Dependent Claim
25 words
A method for manufacturing a liquid crystal display device according to claim 89, wherein polarizing plates are formed on external surfaces of the two substrates.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1998-12-04 | 1999-06-05 | 1999-12-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2002-12-04 | 2003-06-05 | 2003-12-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2006-12-04 | 2007-06-05 | 2007-12-05 | $7700.00 | Window Closed / Lapsed |