EP0322703A2
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EP
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Mesomorphic compound, liquid crystal composition and liquid crystal device
Assignee: Canon Inc
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Filing: 1988-12-19
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Granted: —
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Expires: 2008-12-19
Abstract
Abstract A liquid crystal composition, comprising a main chain-type mesomorphic polymer and a mesomorphic monomer and showing a smectic phase including a plurality of molecular layers, wherein a linkage of a covalent bond is present between adjacent molecular layers among the plurality molecular layers. Because of the presence of the covalent bond linkage between the molecular layers, the elastic energy of the liquid crystal per se relating to the elastic energy between the smectic liquid crystal molecular layers can be controlled to provide a uniform alignment. The mesomorphic polymer preferably has a structure represented by the following formula (1): <CHEM> wherein A denotes a terminal flexible chain group, M denotes a mesogen group, F denotes a spacer flexible chain group, x is 0 or 1, B denotes an ester bond group, ether bond group, thioester bond group, dimethylsiloxane bond group or thioether bond group, and y is 1 - 200.
Inventors
- 👤 Hiroyuki Nohira
- 👤 Yuuta Kumano
- 👤 Kazuhari Katagiri
- 👤 Kenji Shinjo
- 👤 Kazuo Yoshinaga
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-31 12:45
CPC Classifications
C; C09; C09K; C09K19/00; C09K19/04; C09K19/38; C09K19/3804; C09K19/40; C09K19/406; C09K19/408; G; G02; G02F; G02F1/00; G02F1/01; G02F1/13; G02F1/133; G02F1/1333; G02F1/133365
Claims Analysis
Total Claims: 43
Claim 1
Independent Claim
51 words
A liquid crystal composition, comprising a main chain-type mesomorphic polymer and a mesomorphic monomer and showing a smectic phase including a plurality of molecular layers each including a plurality of liquid crystal molecules, wherein a linkage of a covalent bond is present between adjacent molecular layers among the plurality molecular layers.
Claim 2
Dependent Claim
51 words
A liquid crystal composition, comprising a main chain-type mesomorphic polymer and a mesomorphic monomer and showing a smectic phase including a plurality of molecular layers each including a plurality of liquid crystal molecules, wherein a linkage of a covalent bond is present between adjacent molecular layers among the plurality molecular layers.
Claim 3
Dependent Claim
71 words
A composition according to Claim 1, wherein said main chain-type mesomorphic polymer has a structure represented by the following formula (1): wherein A denotes a terminal flexible chain group, M denotes a mesogen group, F denotes a spacer flexible chain group, x is 0 or 1, B denotes an ester bond group, ether bond group, thioester bond group, dimethylsiloxane bond group or thioether bond group, and y is 1 - 200.
Claim 4
Dependent Claim
16 words
A composition according to Claim 2, wherein said mesogen group comprises at least one of and
Claim 5
Dependent Claim
66 words
A composition according to Claim 1, wherein said terminal flexible chain group is at least one of (m = an integer of 4 - 14), (m = an integer of 2 - 5), (m = an integer of 1 - 16), (m = an integer of 1 - 18), (m = an integer of 1 - 5), and (m = an integer of 1 - 16)
Claim 6
Dependent Claim
66 words
A composition according to Claim 2, wherein said spacer flexible chain group is at least one of (1 = an integer of 4 - 18), (1 = an integer of 1 - 12), (1 = an integer of 1 - 10), (1 = an integer of 1 - 10), (1 = an integer of 1 - 10) and (1 = an integer of 1 - 10)
Claim 7
Dependent Claim
14 words
A composition according to Claim 1, wherein said smectic phase is chiral smectic phase.
Claim 8
Dependent Claim
66 words
A liquid crystal device, comprising a pair of substrates and a layer of a smectic liquid crystal disposed between the substrates; said smectic liquid crystal layer comprising a main chain-type mesomorphic polymer and a mesomorphic monomer and showing a smectic phase including a plurality of molecular layers, wherein a linkage of a covalent bond is present between adjacent molecular layers among the plurality of molecular layers.
Claim 9
Dependent Claim
66 words
A liquid crystal device, comprising a pair of substrates and a layer of a smectic liquid crystal disposed between the substrates; said smectic liquid crystal layer comprising a main chain-type mesomorphic polymer and a mesomorphic monomer and showing a smectic phase including a plurality of molecular layers, wherein a linkage of a covalent bond is present between adjacent molecular layers among the plurality of molecular layers.
Claim 10
Dependent Claim
71 words
A device according to Claim 7, wherein said main chain-type mesomorphic polymer has a structure represented by the following formula (1): wherein A denotes a terminal flexible chain group, M denotes a mesogen group, F denotes a spacer flexible chain group, x is 0 or 1, B denotes an ester bond group, ether bond group, thioester bond group, dimethylsiloxane bond group or thioether bond group, and y is 1 - 200.
Claim 11
Dependent Claim
17 words
9 A device according to Claim 8, wherein said mesogen group comprises at least one of and
Claim 12
Dependent Claim
66 words
A device according to Claim 7, wherein said terminal flexible chain group is at least one of (m = an integer of 4 - 14), (m = an integer of 2 - 5), (m = an integer of 1 - 16), (m = an integer of 1 - 18), (m = an integer of 1 - 5), and (m = an integer of 1 - 16)
Claim 13
Dependent Claim
66 words
A device according to Claim 8, wherein said spacer flexible chain group is at least one of (1 = an integer of 4 - 18), (1 = an integer of 1 - 12), (1 = an integer of 1 - 10), (1 = an integer of 1 - 10), (1 = an integer of 1 - 10) and (I = an integer of 1 - 10)
Claim 14
Dependent Claim
18 words
A device according to Claim 7, wherein the smectic liquid crystal layer has been stretched for alignment control.
Claim 15
Dependent Claim
18 words
A device according to Claim 7, wherein said main chain-type mesomorphic polymer has three or more recurring units.
Claim 16
Dependent Claim
18 words
A device according to Claim 13, wherein the smectic liquid crystal layer has been stretched for alignment control.
Claim 17
Dependent Claim
16 words
A device according to Claim 7, wherein said main chain-type mesomorphic polymer is a mesomorphic dimer.
Claim 18
Dependent Claim
16 words
A device according to Claim 7, wherein said smectic liquid crystal is chiral smectic liquid crystal.
Claim 19
Dependent Claim
43 words
A mesomorphic compound represented by the following formula (2): wherein R 1 and R 2 respectively denote a mesomorphic residue group, at least one of R, and R 2 has an optically active group, and n is an integer of 1 - 10.
Claim 20
Dependent Claim
43 words
A mesomorphic compound represented by the following formula (2): wherein R 1 and R 2 respectively denote a mesomorphic residue group, at least one of R, and R 2 has an optically active group, and n is an integer of 1 - 10.
Claim 21
Dependent Claim
68 words
A compound according to Claim 17, wherein said R, and R 2 respectively denote a mesomorphic residue represented by the following formula (3): wherein M denotes a mesogen group, A denotes a terminal flexible chain group, C denotes a spacer flexible chain group, x and z are respectively 0 or 1, and B denotes an ester bond group, ether bond group, thioester bond group or thioether bond group.
Claim 22
Dependent Claim
16 words
A compound according to Claim 18, wherein said mesogen group comprises at least one of and
Claim 23
Dependent Claim
66 words
A compound according to Claim 18, wherein said terminal flexible chain group is at least one of (m = an integer of 4 - 14), (m = an integer of 2 - 5), (m = an integer of 1 - 16), (m = an integer of 1 - 18), (m = an integer of 1 - 5), and (m = an integer of 1 - 16)
Claim 24
Dependent Claim
66 words
A compound according to Claim 18, wherein said spacer flexible chain group is at least one of (1 = an integer of 1 - 18), (1 = an integer of 1 - 12), (1 = an integer of 1 - 10), (1 = an integer of 1 - 10), (1 = an integer of 1 - 10) and (1 = an integer of 1 - 10)
Claim 25
Dependent Claim
13 words
A compound according to Claim 17, which is a compound showing smectic phase.
Claim 26
Dependent Claim
14 words
A compound according to Claim 17, which is a compound showing chiral smectic phase.
Claim 27
Dependent Claim
64 words
A process for producing a mesomorphic compound, comprising reacting a mesomorphic compound having a terminal unsaturation with a siloxane compound to form a mesomorphic compound represented by the following formula (2): wherein R 1 and R 2 respectively denote a mesomorphic residue group, at least one of R 1 and R 2 has an optically active group, and n is an integer of 1-10.
Claim 28
Dependent Claim
64 words
A process for producing a mesomorphic compound, comprising reacting a mesomorphic compound having a terminal unsaturation with a siloxane compound to form a mesomorphic compound represented by the following formula (2): wherein R 1 and R 2 respectively denote a mesomorphic residue group, at least one of R 1 and R 2 has an optically active group, and n is an integer of 1-10.
Claim 29
Dependent Claim
71 words
A process according to Claim 24, wherein said R, and R 2 respectively denote a mesomorphiic residue represented by the following formula (3): wherein M denotes a mesogen group, A denotes a terminal flexible chain group, C denotes a spacer flexible chain group, x and z are respectively 0 or 1, and B denotes an ester bond group, ether bond group, thioester bond group, dimethylsiloxane bond group or thioether bond group.
Claim 30
Dependent Claim
16 words
A process according to Claim 25, wherein said mesogen group comprises at least one of and
Claim 31
Dependent Claim
66 words
A process according to Claim 25, wherein said terminal flexible chain group is at least one of (m = an integer of 4 - 14), (m = an integer of 2 - 5), (m = an integer of 1 - 16), (m = an integer of 1 - 18), (m = an integer of 1 - 5), and (m = an integer of 1 - 16)
Claim 32
Dependent Claim
66 words
A process according to Claim 25, wherein said spacer flexible chain group is at least one of (1 = an integer of 1 - 18), (1 = an integer of 1 - 12), (1 = an integer of 1 - 10), (1 = an integer of 1 - 10), (1 = an integer of 1 - 10) and (1 = an integer of 1 - 10)
Claim 33
Dependent Claim
59 words
A liquid crystal composition, comprising at least two mesomorphic compounds, at least one of which is a mesomorphic compound represented by the following formula (2): wherein R, and R 2 respectively denote a mesomorphic residue group, at least one of R 1 and R 2 has an optically active group, and n is an integer of 1 - 10.
Claim 34
Dependent Claim
59 words
A liquid crystal composition, comprising at least two mesomorphic compounds, at least one of which is a mesomorphic compound represented by the following formula (2): wherein R, and R 2 respectively denote a mesomorphic residue group, at least one of R 1 and R 2 has an optically active group, and n is an integer of 1 - 10.
Claim 35
Dependent Claim
69 words
A composition according to Claim 29, wherein said R 1 and R 2 respectively denote a mesomorphic residue represented by the following formula (3): wherein M denotes a mesogen group, A denotes a terminal flexible chain group, C denotes a spacer flexible chain group, x and z are respectively 0 or 1, and B denotes an ester bond group, ether bond group, thioester bond group or thioether bond group.
Claim 36
Dependent Claim
16 words
A composition according to Claim 30, wherein said mesogen group comprises at least one of and
Claim 37
Dependent Claim
66 words
A composition according to Claim 30, wherein said terminal flexible chain group is at least one of (m = an integer of 4 - 14), (m = an integer of 2 - 5), (m = an integer of 1 - 16), (m = an integer of 1 - 18), (m = an integer of 1 - 5), and (m = an integer of 1 - 16)
Claim 38
Dependent Claim
66 words
A composition according to Claim 30, wherein said spacer flexible chain group is at least one of (1 = an integer of 4 - 18), (1 = an integer of 1 - 12), (1 = an integer of 1 - 10), (1 = an integer of 1 - 10), (1 = an integer of 1 - 10) and (1 = an integer of 1 - 10)
Claim 39
Dependent Claim
20 words
A composition according to Claim 29, wherein said mesomorphic compound represented by the formula (2) is one showing smectic phase.
Claim 40
Dependent Claim
21 words
A composition according to Claim 29, wherein said mesomorphic compound represented by the formula (2) is one showing chiral smectic phase.
Claim 41
Dependent Claim
23 words
A composition according to Claim 29, which comprises a mesomorphic compound represented by the formula (2) and another mesomorphic compound showing smectic phase.
Claim 42
Dependent Claim
24 words
A composition according to Claim 29, which comprises a mesomorphic compound represented by the formula (2) and another mesomorphic compound showing chiral smectic phase.
Claim 43
Dependent Claim
14 words
A composition according to Claim 29, which is a composition showing chiral smectic phase.
References Cited (Backward Citations)
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