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公开(公告)号：JP2003178667A
公开(公告)日：2003-06-27
申请号：JP2002263504
申请日：2002-09-10
Applicant: CANON KK
Inventor： YAMADA NOBUTSUGU , MEGURO TADAYASU , TAKEZAWA SATOSHI
Abstract: PROBLEM TO BE SOLVED: To provide a substrate for forming an electron source having a low cost, reduced variation per hour of electron emission characteristics of an electron emission element, and substantially reducing the dispersion of electron emission characteristics, and to provide an electron source using the substrate, and an image forming device. SOLUTION: A plurality of electron emission elements are arranged in the substrate 1 for forming the electron source, a layer 7 containing SiO 2 as a principle component is formed on the substrate 1, and an etching rate of the SiO 2 layer 2 with a 0.4 wt.% hydrogen fluoride ammonium aqueous solution (NH 4 -HF 2 ) is specified to 150 nm/min or less at room temperature. COPYRIGHT: (C)2003,JPO
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公开(公告)号：JP2000244122A
公开(公告)日：2000-09-08
申请号：JP4441999
申请日：1999-02-23
Applicant: CANON KK
Inventor： YAMADA NOBUTSUGU
Abstract: PROBLEM TO BE SOLVED: To achieve a method of manufacturing an interlayer insulating layer which can prevent the continuous growth of pin holes, when preparing a multilayer insulating layer and hence prevent short-circuiting defects between upper and lower interconnection layers, and which can prevent damages such as sagging of layer patterns during sintering and hence prevent defective interconnections. SOLUTION: Element electrodes 1 and 2 are arrayed on a substrate 9 (a), and Y-direction interconnections 4 are formed, while being connected to the electrodes 1 (b). Interlayer insulating layers 51 are formed so as to cross the interconnections 4, and second and third insulating layers 52 and 53 are formed (c). Insulating materials forming the respective layers are such that an insulating material forming the intermediate layer has a lower softening point than those of the uppermost and lowermost layers. Sintering is performed at a temperature, which is higher than the softening point of the intermediate layer 52 and which is substantially equal to the softening point of an insulating material forming the layer immediately thereunder. X-direction interconnections 6 are formed on the uppermost layer 53 (d). Then, interconnections 7 to be connected to the electrodes 2 are formed, and conductive thin films 3 are formed between the electrodes 1 and 2 (e). During the sintering of the layer 52, the layer 52 softens appropriately, while the layer 51 immediately thereunder is hardly softened.
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公开(公告)号：JPH1152389A
公开(公告)日：1999-02-26
申请号：JP21695997
申请日：1997-07-29
Applicant: CANON KK
Inventor： SATO KOICHI , HANIYU YUKIO , NAKAMURA SHINICHI , MORI YOSHIMASA , YAMADA NOBUTSUGU , NOGUCHI KOJI , TERADA MASAHIRO , ASAO YASUSHI
Abstract: PROBLEM TO BE SOLVED: To obtain a liquid crystal element having a large driving margin, excellent durability, high precision and high quality by forming an orientation controlling film on at least one of a pair of substrates and incorporating a polymer surfactant into at least one orientation controlling film. SOLUTION: A liquid crystal layer 1 comprising a liquid crystal compsn. is held between a pair of substrates 2a, 2b facing each other. Orientation controlling films 4a, 4b are formed on one or both of the substrates 2a, 2b, and at least one orientation controlling film of the orientation controlling films 4a, 4b contains a polymer surfactant as a component. As for the polymer surfactant, a cationic polymer surfactant is preferably used, and the mol.wt. of the polymer surfactant is preferably large to a certain degree or more, considering good binding property and non-bleeding property. Therefore, the weight average mol.wt. of the polymer is preferably >=1000. The polymer surfactant is introduced into the orientation controlling film by mixing into the film is formed. Especially, a polyimide can be especially preferably introduced since it has high controlling performance for uniaxial orientation.
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公开(公告)号：JPH1152383A
公开(公告)日：1999-02-26
申请号：JP21695697
申请日：1997-07-29
Applicant: CANON KK
Inventor： NOGUCHI KOJI , HANIYU YUKIO , SATO KOICHI , NAKAMURA SHINICHI , MORI YOSHIMASA , YAMADA NOBUTSUGU , TERADA MASAHIRO
Abstract: PROBLEM TO BE SOLVED: To obtain a liquid crystal element having a large driving margin and resistance against burning with time by forming an orientation controlling film on at least one of a pair of substrates and incorporating a cationic surfactant into at least one orientation controlling film. SOLUTION: This liquid crystal element consists of a pair of substrates 2a, 2b and a liquid crystal layer 1 comprising a chiral smectic liquid crystal compsn. showing at least two stable states held between the substrates. An orientation controlling film 4a subjected to uniaxial orientation treatment is formed on one of the pair of substrates 2a, 2b, for example, on the substrate 2a, while an orientation controlling film 4b without uniaxial orientation treatment is formed on the other substrate 2b. The orientation controlling film 4a with uniaxial orientation treatment preferably consists of a polyimide, while the orientation controlling film 4b without uniaxial orientation treatment preferably consists of a silane coupling agent or the like. By using the orientation controlling film containing a cationic surfactant as above described, ionic or polar impurities which are present in the liquid crystal layer 1 and induce deterioration in driving can be passivated or inactivated.
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公开(公告)号：JPH10213820A
公开(公告)日：1998-08-11
申请号：JP1931597
申请日：1997-01-31
Applicant: CANON KK
Inventor： SATO KOICHI , MORI YOSHIMASA , HANIYU YUKIO , SHINJO KENJI , NAKAMURA SHINICHI , YAMADA NOBUTSUGU , NOGUCHI KOJI
IPC: G02F1/137 , C09K19/02 , G02F1/1337 , G02F1/141
Abstract: PROBLEM TO BE SOLVED: To realize a large-area and high-precision liquid crystal device by forming a chiral smectic liquid crystal having a specified or larger ratio of the apparent tilt angle to the real tilt angle in such a manner that the chiral smectic phase in a driven state has a layer structure of plural kinds and that the anisotropy of the dielectric const. of the liquid crystal is controlled to a specified value or lower. SOLUTION: In this liquid crystal element, a chiral smectic liquid crystal having at least two stable states is used, and the liquid crystal has >=0.5 ratio of θa /Θ, wherein θa is the apparent tilt angle and Θ is the real tilt angle. The chiral smectic phase which is driven has a layer structure of plural kinds. The anisotropy Δε of the dielectric const. of the liquid crystal is controlled to =0.5 θa /Θmeans that the liquid crystal is in a uniform state while the twisted state of liquid crystal molecules is suppressed between substrate and that extremely good contrast is obtd. By controlling the anisotropy Δεof the dielectric const. of the liquid crystal to
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Patent Agency Ranking
公开(公告)号：JPH09169976A
公开(公告)日：1997-06-30
申请号：JP27639596
申请日：1996-10-18
Applicant: CANON KK
Inventor： TERADA MASAHIRO , SATO KOICHI , YAMADA NOBUTSUGU , SHINJO KENJI
Abstract: PROBLEM TO BE SOLVED: To obtain a liquid element high in brightness (high transmission), contrast, etc., suitable as a light valve useful in a flat panel display, etc., comprising a specific fluorine-containing liquid crystal compound. SOLUTION: This liquid crystal element comprises a liquid crystal composition that has an orientation control layer having =70wt.% a fluorine-containing liquid crystal composition group having a smectic intermediate layer or a latent smectic intermediate later. The liquid crystal element comprises >=30wt.% of an ether oxygen in a chain at the fluorocarbon end part, a smectic C phase and >=5wt.% of a liquid crystal compound having
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7.发明专利
公开(公告)号：JPH08225784A
公开(公告)日：1996-09-03
申请号：JP31583395
申请日：1995-11-10
Applicant: CANON KK
Inventor： YAMASHITA MASATAKA , MORI YOSHIMASA , MIZUNO YU , TERADA MASAHIRO , YAMADA NOBUTSUGU , KATAGIRI KAZUHARU
IPC: G02F1/137 , C09K19/04 , C09K19/10 , C09K19/30 , C09K19/34 , C09K19/42 , C09K19/46 , G02F1/13 , G02F1/1337 , G02F1/141
Abstract: PURPOSE: To obtain the subject composition, consisting essentially of two kinds of liquid crystalline compounds having specific structures, capable of reducing the temperature dependence of response speed, excellent in contrast and improved in driving characteristics. CONSTITUTION: This composition consists essentially of (A) a compound of the formula R1 -A1 -X1 -A2 -X2 -A3 -R2 [R1 and R2 are each H, CN, etc.; X1 and X2 are each a single bond, O, etc.; A1 to A3 are each a single bond, formula I (R3 is H, a halogen, etc.), etc., with the proviso that at least one of A1 to A3 is formula I or II (R4 is R3 )] and (B) a compound of the formula R5 -A4 -R6 [R5 and R6 are each Q-X3 -(CH2 )L-X4 or R7 (Q is formula III, IV, etc.; X3 is a single bond, OCH2 , etc.; X4 is a signal bond, CH2 O, etc.; L is 3-16; R7 is a 1-18C straight-chain, a branched, a cyclic alkyl, etc.), with the proviso that at least one of R5 and R6 is the former; A4 is A5 -X5 -A6 or A5 -A6 -X5 -A7 (A5 to A7 are each formula V, VI, etc.); X5 is a single bond, CH=CH, etc.]. The composition preferably contains 1-20wt.% each of the components (A) and (B).
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公开(公告)号：JPH08209139A
公开(公告)日：1996-08-13
申请号：JP3295495
申请日：1995-01-31
Applicant: CANON KK
Inventor： YAMASHITA MASATAKA , TERADA MASAHIRO , MORI YOSHIMASA , YAMADA NOBUTSUGU , KATAGIRI KAZUHARU , NOGUCHI KOJI , NAKAZAWA IKUO
Abstract: PURPOSE: To obtain a liquid crystal composition reduced in the extent of fluctuations of liquid crystal molecules caused by pulses in a period of no selection and being excellent in low-temperature resistance by mixing two specified liquid crystal compounds with each other in a specified ratio. CONSTITUTION: This composition is prepared by mixing 0.1-30wt.% each of liquid crystal compounds of formulas I and II (wherein R1 and R2 are each a 1-18 C linear or branched alkyl; X1 , X2 , X3 and X4 are each a single bond, O, a group of formula III or the like; A1 is a group of formula IV, a group of formula V or the like; A2 is a group of formula VI, a group of formula VII or the like; (n) is 1-10; and (m) is 3-16). It is desirable that this composition has chiral smectic C phase and that tilt angle δ of the layer of the chiral smectic C phase has an adjusted value of 3-15 deg. in the temperature range of 0-60 deg.C. The composition can be desirably used in the production of a ferroelectric liquid crystal element, a ferroelectric liquid crystal device, a liquid crystal optical shutter, etc.
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公开(公告)号：JPH08209136A
公开(公告)日：1996-08-13
申请号：JP3295095
申请日：1995-01-31
Applicant: CANON KK
Inventor： YAMASHITA MASATAKA , TERADA MASAHIRO , MORI YOSHIMASA , YAMADA NOBUTSUGU , MIZUNO YU , NAKAZAWA IKUO , NOGUCHI KOJI
Abstract: PURPOSE: To obtain a liquid crystal composition suppressed in the reduction in a drive margin at a low-temperature region and showing good monodomain properties by mixing two specified liquid crystal compounds with each other in a specified ratio. CONSTITUTION: This composition is prepared by mixing 0.1-30wt.% each of liquid crystal compounds of formulas I and II (wherein R1 , R2 and R3 are each a 1-18 C linear or branched alkyl; X1 , X2 and X3 are each a single bond, O, a group of formula III or the like; A1 is a group of formula IV or a group of formula V; A2 is a group of formula VI or a group of formula VII; and (m) is 3-16). It is desirable that this composition has chiral smectic C phase, and that the tilt angle δ of the chiral smectic C phase has an adjusted value of 3-15 deg. in the temperature range of 0-60 deg.C. The composition can be used in the production of a ferroelectric liquid crystal element, a ferroelectric liquid crystal device, a liquid crystal optical shutter, etc.
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10.发明专利
公开(公告)号：JPH08209134A
公开(公告)日：1996-08-13
申请号：JP3294895
申请日：1995-01-31
Applicant: CANON KK
Inventor： YAMASHITA MASATAKA , TERADA MASAHIRO , MORI YOSHIMASA , NAKAZAWA IKUO , MIZUNO YU , YAMADA NOBUTSUGU
Abstract: PURPOSE: To obtain a liquid crystal composition suppressed in the reduction in a drive margin at a high-temperature region and giving a good image even at high temperatures by mixing two specified liquid crystal compounds with each other in a specified ratio. CONSTITUTION: This composition is prepared by mixing 0.1-30wt.% each of liquid crystal compounds of formulas I and II (wherein R1 , R2 and R3 are each a 1-18C linear or branched alkyl; X1 and X2 are each a single bond, O, a group of formula III or the like; X3 is a single bond, OCH2 , a group of formula III or the like; A1 is a group of formula IV or a group of formula V; A2 is a group of formula VI, a group of formula VII or the like; and (m) is 3-16). It is desirable that this composition has chiral smectic C phase and that the tilt angle δ of the layer of the chiral smectic C phase has an adjusted value of 3-15 deg. in the temperature range of 0-60 deg.C. The composition can be desirably used in the production of a ferroelectric liquid crystal element, a ferroelectric liquid crystal device, a liquid crystal optical shutter, etc.
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