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公开(公告)号：JPH09167584A
公开(公告)日：1997-06-24
申请号：JP34754795
申请日：1995-12-18
Applicant: CANON KK
Inventor： SHIBATA MASAAKI , TSUKAMOTO TAKEO , IWASAKI TATSUYA
Abstract: PROBLEM TO BE SOLVED: To enhance electron emission characteristics and lengthen the life by forming a region covered with metal and a region covered with a metal oxide on a conductive film. SOLUTION: A metal film 6 and a metal oxide film 7 are formed on a conductive film 4 on both sides of an electron emission part 5 formed on the conductive film 4, an element electrode 3 connecting to the film 4 on the metal film 6 side is made in high potential and an element electrode 2 connecting to the film 4 on the metal oxide film 7 side is made in low potential for driving. Since the film 4 on the high potential side of the electron emission part 5 is covered with the metal film 6 having high melting point and low vapor pressure, melting and aggregation caused by temperature rising during driving are hardly produced. By forming the film 7 containing an element of an alkali earth metal. a rear earth metal, titanium, zirconium, hafnium, or the like on the low potential side of an electron emission element, electron emission current is increased and stabilized. The electron emission element on which the metal film 6 and the metal oxide film 7 are formed can keep stable electron emission characteristics for a long time.
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公开(公告)号：JPH07152036A
公开(公告)日：1995-06-16
申请号：JP8994394
申请日：1994-04-27
Applicant: CANON KK
Inventor： NAKAMURA KATSUTOSHI , SHIBATA MASAAKI , MIYATA HIROKATSU , KISHI ETSURO , KANEKO SHUZO
IPC: G02F1/1337 , G02F1/141
Abstract: PURPOSE:To obtain a liquid crystal element which preferably develops a uniform orientation state with high contrast by subjecting a substrate to such orienting treatment in two directions opposite to each other, in one direction and in almost opposite direction, to satisfy specified conditions of the tilt angle, pretilt angle and inclination angle. CONSTITUTION:At least one substrate is subjected to such orienting treatment at least in two directions opposite to each other to satisfy THETA/2 alpha+delta, wherein THETAa is the apparent tilt angle which is 1/2 of the angle made by two optically stable states, THETA is the tilt angle (cone angle) of the ferroelectric liquid crystal, alpha is the pretilt angle and delta is the inclination angle of the ferroelectric liquid crystal layer to the normal line of the substrate. Thereby, the tendency of pretilt state of the liquid crystal molecule to rise from the substrate is compensated. Further, the macro directionality of inclination or bending direction of smectic layer in a picture element is compensated, and movement phenomenon of liquid crystal molecules or asymmetry of threshold is suppressed in such a state durable against external conditions.
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公开(公告)号：JPH06347799A
公开(公告)日：1994-12-22
申请号：JP15818193
申请日：1993-06-04
Applicant: CANON KK
Inventor： SHIBATA MASAAKI , YUASA SATOSHI , KISHI ETSURO
IPC: G02F1/1337 , G02F1/141
Abstract: PURPOSE:To improve display characteristic of assigning intensity levels by forming conductive high-molecular films doped with at least two kinds of differ ent dopants on a substrate to be subjected to a uniaxial orientation treatment. CONSTITUTION:The conductive high-molecular film doped with at least two kinds of the different dopants or the combined film composed of the conductive high-molecular film doped with at least two kinds of the different dopants and a high-molecular substance having good uniaxial orientability is formed on at least one substrate to be subjected to the uniaxial orientation treatment. The film, at least one kind of the dopants of which are dedoped into a ferroelectric liquid crystal by impression of an electric field or defusing, at least one kind of the dopants of which are not dedoped into the ferroelectric liquid crystal, is more preferable. Namely, the hysteresis which is of problem in the case of execution of gradation driving is removed by using the conductive high-molecular oriented films doped with two kinds of the different dopants for the ferroelectric liquid crystal element.
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公开(公告)号：JPH06308501A
公开(公告)日：1994-11-04
申请号：JP10103393
申请日：1993-04-27
Applicant: CANON KK
Inventor： MIYATA HIROKATSU , SHIBATA MASAAKI , SHINJO KATSUHIKO
IPC: G02F1/133 , G02F1/1337 , G09G3/36
Abstract: PURPOSE:To provide the liquid crystal element having nearly symmetrical switching characteristics and a large number of gradations by forming striped projecting parts on one of a pair of electrodes and subjecting these parts to an orienting treatment. CONSTITUTION:The films of ITO 1203, 1204 are formed on upper and lower glass substrates 1201, 1202 and further, pixel patterns and stripe patterns 1205 are formed on the upper glass substrate 1202 by a photolithography stage. Only the pixel patterns are formed on the lower glass substrate 1201. Further, polysiloxane 1207 is spin coated on the electrodes on the upper substrate 1202. On the other hand, the film of polyimide 1206 is formed on the electrodes on the lower substrate 1201 and is subjected to the rubbing treatment. Two sheets of the substrates 1201, 1202 are thereafter stuck to each other at a prescribed cell gap and a ferroelectric liquid crystal is injected into this gap.
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公开(公告)号：JPH06214279A
公开(公告)日：1994-08-05
申请号：JP19610892
申请日：1992-06-30
Applicant: CANON KK
Inventor： SHIBATA MASAAKI , TOMITA YASUO
Abstract: PURPOSE:To provide the device and method for optical echo memory recording and reproduction which enable real-time recording and reproduction in a picosecond time area without being limited to an electronic operation speed. CONSTITUTION:At the time of recording, a means 5 which converts a spatial bit pattern into a time series by parallel-serial conversion prepares a time series light pulse data signal 6 to be recorded on an optical echo memory medium 7. At the time of reproduction, a means 9 which converts the time series signal into the spatial bit pattern by serial-parallel conversion and a detection means 11 are used to detect the time-series signal 8, reproduced from the optical echo medium 7, as a reproduction signal 10 of a spatial pattern.
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Patent Agency Ranking
公开(公告)号：JPH0545230A
公开(公告)日：1993-02-23
申请号：JP28929891
申请日：1991-10-08
Applicant: CANON KK
Inventor： SHIBATA MASAAKI , TOMITA YASUO
Abstract: PURPOSE:To obtain a method and device for measuring width of an optical pulse accurately with medium having two-photon absorption effect. CONSTITUTION:Beam radiated from a light source means 11 is divided into two beams by a light divider 12, and different optical work is given to the two beams respectively at different optical passages, and thereafter, two beams are combined by the light divider to form two-beam, which has intensity different from each other, and enter a medium 17 having two-photon absorption effect. One beam of two-beam passed through the medium 17 is detected by a light detecter 19, and the signal obtained by the light detector 19 is used to measure width of optical pulse.
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57.发明专利
公开(公告)号：JP2002313215A
公开(公告)日：2002-10-25
申请号：JP2001118989
申请日：2001-04-18
Applicant: CANON KK
Inventor： SHIBATA MASAAKI , SHIMAZU AKIRA , TAKAHASHI MASANORI
IPC: H01J1/316
Abstract: PROBLEM TO BE SOLVED: To provide an electron emitting element with improved electron emitting property, using a glass plate which requires treatment such as surface coating, enabled to easily make the size big. SOLUTION: The electron emitting element has carbon films 12, 13 as structural elements separated by a gap 11 laid between them, which are formed on a glass plate, and expressed in mol%, the glass contains SiO2 by 65-75, B2 O3 by 15-25, Al2 O3 or alkali earth metal oxide by 3-15, and other metal oxide content of alkali metal oxide is 7 or less.
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公开(公告)号：JP2002197967A
公开(公告)日：2002-07-12
申请号：JP2000392885
申请日：2000-12-25
Applicant: TOSHIBA CORP , CANON KK
Inventor： ASAI HIRONORI , SUZUKI KOJI , ISHIZUKA YOSHIKI , YAMAMOTO MASAHIKO , SHIBATA MASAAKI
Abstract: PROBLEM TO BE SOLVED: To improve the electron emission efficiency (Ie/If) of a flat electron emitting element. SOLUTION: Electroconductive thin films 13 and 14 are formed between a pair of electrodes 11 and 12 formed on an insulating base board 10, and cracks (micro-gaps) are generated in the thin films 13 and 14 by feeding current between the electrodes 11 and 12 so that an electron emission part 15 is formed, and thereby the intended flat electron emitting element is manufactured, wherein for formation of the electron emission part 15, pulse voltage of opposite polarities are impressed alternately between the electrodes 11 and 12 in an acetone atmosphere, and their sizes are made asymmetrical so that the pulse voltage with the electrode 11 positive is made 16 V while the pulse voltage with the electrode 12 positive is made 14 V.
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59.发明专利
公开(公告)号：JP2002075169A
公开(公告)日：2002-03-15
申请号：JP2000264969
申请日：2000-09-01
Applicant: CANON KK
Inventor： MIYAZAKI KAZUYA , MIZUNO SUKENOBU , SHIBATA MASAAKI
Abstract: PROBLEM TO BE SOLVED: To provide an electron emission element which can maintain proper electron emission characteristics for a long period. SOLUTION: Carbon films 4, having a gap 5 between a couple of element electrodes 2, 3 formed on a substrate 1, are electrically connected to respective pair of the element electrodes 2, 3 formed on the substrate 1, and have resistivity of 10-3 to 101 Ωcm at a room temperature and a negative temperature coefficient for resistance.
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公开(公告)号：JP2000251643A
公开(公告)日：2000-09-14
申请号：JP5149599
申请日：1999-02-26
Applicant: CANON KK
Inventor： SHIBATA MASAAKI , MOTOI YASUKO , SANBA TOSHIAKI , NAKAMURA HISAMI
Abstract: PROBLEM TO BE SOLVED: To provide an electron emission element which has high efficiency, causes no discharge phenomenon and has high stability over long time. SOLUTION: This electron emission element is provided with an insulating substrate 1, a pair of electrode members formed on the main surface of the substrate 1, and a first and second carbon containing film members 21, 22 arranged oppositely to each other between a pair of the electrode members interlaying a gap 8. The element has such a structure that the first carbon containing film member 21 is electrically connected to one of a pair of the electrode members, the second carbon containing film member 22 is electrically connected to the other of a pair of the electrode members, and the gap 8 between the first and second carbon containing film members 21, 22 includes a position having the maximum gap size of around 5 nm. In this structure, the first and second carbon containing film members 21, 22 may be electrically connected to a pair of the electrode members via a first and second film members formed between a pair of the electrode members, respectively.
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