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公开(公告)号：JPH08180804A
公开(公告)日：1996-07-12
申请号：JP33662594
申请日：1994-12-26
Applicant: CANON KK
Inventor： MITOME MASANORI , YAMAMOTO KEISUKE , YAMANOBE MASATO , HAMAMOTO YASUHIRO
Abstract: PURPOSE: To improve electron emitting properties and durability by carrying out activation treatment after an electron emitting part is formed by electrification to a conductive thin film which communicates element electrodes formed on a substrate with each other. CONSTITUTION: After materials for element electrodes are deposited on a sufficiently cleaned substrate 1, a pair of opposed element electrodes 4, 5 are formed by photolithographic method. After that, an organometal solution is applied to the resulting substrate, heated and baked to form a conductive thin film 3 which communicates the element electrodes 4, 5. Then, electricity is applied between the element electrodes 4, 5 to partly damage, deform or denature the thin film 3 to form an electron emitting part 2. Furthermore, the obtained substrate is activated by applying voltage under the atmosphere containing an organic compound while the voltage being increased from voltage lower than foaming voltage to voltage higher than the foaming voltage continuously or step by step at 0.1-1.0V/minute increasing ratio.
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公开(公告)号：JPH0869747A
公开(公告)日：1996-03-12
申请号：JP22611394
申请日：1994-08-29
Applicant: CANON KK
Inventor： TSUKAMOTO TAKEO , YAMAMOTO KEISUKE , HAMAMOTO YASUHIRO , YAMANOBE MASATO
Abstract: PURPOSE: To perform a foaming process quickly, uniformly, and with less heat emission by installing an electric charge accumulator in a position confronting one of the element electrodes with a dielectric substance interposed, allowing the accumulator to make discharge, and therewith forming an electron emission part in an electroconductive film. CONSTITUTION: A changeover switch 404 is closed so that a power supply 401 is connected with one 4 of the element electrodes. Because a base board 1 of dielectric substance is interposed between an electroconductive body 405 and the element electrodes 4, 5 and an electroconductive thin film 3, positive electric charges are produced at the surfaces of the electrodes 4, 5, and charges are accumulated in capacitance components 402, 403. Then the changeover switch 404 is turned so that the electrode 4 and electroconductive body 405 are connected together. Thereby the electric charges accumulated in the electrode 4 are released directly through a shortcircuit, while the electric charges accumulated in the electrode 5 are discharged through the thin film 3, in which Joule's heat is produced and foaming takes place. Thus an electron emission part 2 is formed. According to these procedures, the foaming process can be ended quickly through a single cycle of operations.
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公开(公告)号：JPH06203741A
公开(公告)日：1994-07-22
申请号：JP36135292
申请日：1992-12-29
Applicant: CANON KK
Inventor： TAKEDA TOSHIHIKO , YONEDA HIROSHI , SASAKI TOYONARI , NOMURA ICHIRO , SUZUKI HIDETOSHI , HAMAMOTO YASUHIRO
Abstract: PURPOSE:To provide an electron emitting element wherein an electron emitting amount and electron emitting efficiency are improved by arranging fine grains in contact with an electrode and fine grains of different material containing an element of large atomic weight in noncontact with the electrode between the electrodes on a substrate. CONSTITUTION:A pair of electrodes 12, 13 are arranged with an about 0.1 to 100mum space part 14 on a substrate 11 consisting of insulating material of glass or the like. A fine grain film 15 consisting of conductive material of about ten several Angstrom to several mum grain size is arranged in contact with these electrodes 12, 13. In a discontinuity part of this fine grain film 15, fine grains 16 of different material containing an element of atomic weight larger than the element, contained in the fine grain film 15, are locally arranged in noncontact with the electrodes 12, 13. This different material fine grain 16 has a 10Angstrom to 10mum grain size, further preferable containing a low work function material. In this way, an electron emitting element, improving an element characteristic of electron emitting amount, electron emitting efficiency, etc., further with good uniformity and repeatability, is obtained.
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84.发明专利
公开(公告)号：JP2000311597A
公开(公告)日：2000-11-07
申请号：JP2000042952
申请日：2000-02-21
Applicant: CANON KK
Inventor： TAMURA MIKI , HAMAMOTO YASUHIRO , YAMAMOTO KEISUKE
Abstract: PROBLEM TO BE SOLVED: To suppress reduction in the emitted electron amount with lapse of time and unstability. SOLUTION: When an electron emitting element is manufactured or adjusted, or prior to normal drive, a voltage V1 having following relationship with the maximum value V2 of a normal driving voltage is applied between electrodes. Where a current I that is carried in accordance with applying a voltage V is I=f(V), and f'(V) is a differential coefficient in the voltage V, an expression I satisfies f (V1)/ V1.f'(V1-2f(V1)}>F(V2)/ V2.f'(V2-2f(V2)}. Where applying the voltage V1 is completed and then the voltage V2 is consecutively applied twice in a form of a pulse, the first time value in the right side of the expression I is Xn-1 and the second time value is Xn, an expression II satisfies (Xn-1-Xn)/Xn-1
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85.发明专利
公开(公告)号：JP2000311584A
公开(公告)日：2000-11-07
申请号：JP2000041453
申请日：2000-02-15
Applicant: CANON KK
Inventor： YAMAMOTO KEISUKE , HAMAMOTO YASUHIRO , TAMURA MIKI
Abstract: PROBLEM TO BE SOLVED: To enhance electron emitting efficiency within a range showing no ill effect on variation with lapse of time by driving. SOLUTION: In this electron emitting element, the amount of S included in a deposit 10 mainly containing a carbon is controlled by using a method of introducing a row gas further containing S in the atmosphere including an organic substance when activated and controlling the amount of the row gas or method of controlling the amount of a solution coated by coating the solution containing S in a form of an organometallic compound, etc., after forming the deposit and then thermally treating it to contain S. Thereby, the ratio of S to carbon is 1 mol% to 5 mol%, inclusive.
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Patent Agency Ranking
公开(公告)号：JP2000251729A
公开(公告)日：2000-09-14
申请号：JP4906699
申请日：1999-02-25
Applicant: CANON KK
Inventor： HAMAMOTO YASUHIRO
Abstract: PROBLEM TO BE SOLVED: To provide an image forming device with a less deterioration over aging (aged reduction) of a brightness by arranging a getter film with a large capacity and a large surface are in an indication area of the image forming device and to provide an image forming device with a less generation of an aged brightness dispersion in an image forming area. SOLUTION: An enclosure 5 is constituted by an electron source 1, a face plate 4 and a support frame 3. A getter structure body 2 having an opening is arranged on the electron source 1 or in an image indication area at an inner wall surface side of the face plate 4. The inside of the enclosure 5 is discharged to vacuum by a non-evaporation getter having a thickness of 10-100 μm formed on the getter structure body 2.
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公开(公告)号：JP2000243331A
公开(公告)日：2000-09-08
申请号：JP4600099
申请日：1999-02-24
Applicant: CANON KK
Inventor： HAMAMOTO YASUHIRO , TAMURA MIKI , YAMAMOTO KEISUKE
Abstract: PROBLEM TO BE SOLVED: To further stabilize an electron emitting characteristic of an electron emitting element. SOLUTION: Before normally driving a cold cathode electron emitting element driven by voltage of ordinary driving voltage not more than Vi, pulse voltage having a wave height value being voltage Vs not more than Vf is applied in the first place, and afterwards, there is applied a pulse voltage having a wave height value that changes until the wave height value becomes voltage Vmax not less than Vi, and after applying pulse voltage having a wave height value of Vmax by one time or more, ordinary driving is performed.
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公开(公告)号：JP2000200571A
公开(公告)日：2000-07-18
申请号：JP29794299
申请日：1999-10-20
Applicant: CANON KK
Inventor： HASEGAWA MITSUTOSHI , GOFUKU IHACHIROU , ARAI YOSHITAKA , HAMAMOTO YASUHIRO , SHIGEOKA KAZUYA
Abstract: PROBLEM TO BE SOLVED: To provide an image display device having little decline of an electron emission characteristic of an electron source with the passage of time, and having little change of luminance with the passage of time (decline with the passage of time), and its manufacturing method. SOLUTION: This image display device, equipped with an envelope 5 composed of a member including a first substrate 1 and a second substrate 6 arranged at an interval, an electron source arranged on the first substrate 1 in the envelope 5, and a fluorescent screen 7 and an accelerating electrode 8 arranged on the second substrate 6, has a first getter 9 arranged in an image display region X in the envelope 5, and a second getter 14 insulated from the electron source and the accelerating electrode 8 and arranged so as to enclose the first getter 9.
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公开(公告)号：JPH0950256A
公开(公告)日：1997-02-18
申请号：JP15743096
申请日：1996-05-30
Applicant: CANON KK
Inventor： SUZUKI HIDETOSHI , TAKEDA TOSHIHIKO , HAMAMOTO YASUHIRO , NAKAMURA NAOHITO , NOMURA ICHIRO
Abstract: PROBLEM TO BE SOLVED: To reduce the power consumption by making a driving means a means impressing specific voltage pulses whose polarities are reverse to polarities of voltages performing electron emissions. SOLUTION: A voltage source 6 for properly impressing a voltage between the electrode 4 and the electrode 5 of a surface condition type electron emitting element irradiates fluorescent bodies 122 with electron beams according to the desired pattern of a display image after previously making surface conduction type electron emitting elements tansit to highly resistant states while impressing highly resistant pulses on them. Then, the highly resistant pulses whose polarities are the polarities reverse to polarities at the time of the electron emissions and whose amplitudes exceed -Vc and whose rising-up parts have inclinations equal to or larger than 10V/sec are impressed on surface conductive electron emitting elements. Succeedingly, however a driving voltage for lighting fluorescent bodies 122 according to the desired display pattern is impressed on them, in the case of successively scanning surface conduction type electron emitting elements arranged in a simple matrix, a voltage of, for example, 7V or 0V is impressed on them while other lines are scanned. Then, electron beams are made to be emitted to lighting fluorescent bodies by impressing the voltage of not less than Vth on halfway.
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公开(公告)号：JPH08329826A
公开(公告)日：1996-12-13
申请号：JP15406595
申请日：1995-05-30
Applicant: CANON KK
Inventor： HAMAMOTO YASUHIRO
Abstract: PURPOSE: To provide an electron source having electron emitting elements of such a structure as capable of removing shortcircuit in the element generated on the way of the manufacturing process and of repairing the shortcircuited part. CONSTITUTION: A plurality of electron emitting elements 104 are furnished as having a conductive film 3 striding over three element electrodes 4, 5, 5', and the element electrode 4 of each element 104 is connected with a row direction wiring 102, and element electrodes 5, 5' are connected with the column direction wiring 103 through heat evaporating wirings 105, 105'. Even in case the element electrodes 4, 5 are shortcircuited, it can be repaired by thermally breaking the wiring 105.
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