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41. 发明专利

JPH11283492A VACUUM PERIPHERAL VESSEL AND METHOD FOR FORMING A VACUUM THEREIN 失效
公开(公告)号：JPH11283492A
公开(公告)日：1999-10-15
申请号：JP8112498
申请日：1998-03-27
申请人： FUTABA DENSHI KOGYO KK
发明人： ITO SHIGEO , TANAKA GENTARO , YOKOYAMA MIKIO , TONEGAWA TAKESHI
IPC分类号： H01J5/02 , H01J9/385 , H01J9/39 , H01J29/86 , H01J29/94 , H01J31/12
摘要： PROBLEM TO BE SOLVED: To improve the degree of vacuum of a field emission device by baking effectively the interior of a vacuum peripheral vessel to drive out remaining gases before forming a vacuum therein. SOLUTION: In this vacuum vessel comprising a cathode side substrate 2 on which a field emission element is formed and anode side substrates 1 which are arranged with a prescribed spacing, the vacuum forming method comprises the steps of: providing at least two or more opening parts on the vacuum peripheral vessel before sealing it, baking and driving out remaining gases by flowing through a high-temperature gas in the vessel in a process prior to a process of forming a vacuum in the vessel, and then sealing the opening(s) except one opening and at the same time forming vacuum in the vessel using the remaining opening.

42. 发明专利

JP2940242B2 失效
公开(公告)号：JP2940242B2
公开(公告)日：1999-08-25
申请号：JP19736191
申请日：1991-07-12
申请人： FUTABA DENSHI KOGYO KK
发明人： KISHINO TAKAO , ITO SHIGEO , TONEGAWA TAKESHI , NIIYAMA TAKEHIRO
IPC分类号： H01J1/16 , H01J1/15 , H01J9/04 , H01J29/04 , H01J31/15

43. 发明专利

JPH10177851A VACUUM CONTAINER 失效
公开(公告)号：JPH10177851A
公开(公告)日：1998-06-30
申请号：JP33841796
申请日：1996-12-18
申请人： FUTABA DENSHI KOGYO KK
发明人： KISHINO TAKAO , TANAKA GENTARO , ITO SHIGEO , TONEGAWA TAKESHI
IPC分类号： H01J29/86 , H01J5/02 , H01J7/18 , H01J9/385 , H01J29/94 , H01J31/12
摘要： PROBLEM TO BE SOLVED: To arrange a getter member without thickening the total height of an envelope. SOLUTION: An anode substrate 1 in which an anode electrode serving as a display part is formed and a cathode substrate 2 in which a field emission element is formed are faced, and the outer circumferences of the substrates 1, 2 are sealed to constitute an envelope 4. A through hole 14 communicating with the inside of the envelope is formed in the cathode substrate 2. A getter member 15 is housed in the through hole 14. An exhaust pipe 16 for exhausting the envelope 4 is arranged on the outer wall surface of the cathode substrate 2 in which the through hole 14 is positioned.

44. 发明专利

JPH1021829A MANUFACTURE OF VACUUM AIR TIGHT CONTAINER 失效
公开(公告)号：JPH1021829A
公开(公告)日：1998-01-23
申请号：JP19271496
申请日：1996-07-04
申请人： FUTABA DENSHI KOGYO KK
发明人： ITO SHIGEO , MAKITA YOSHIO , TONEGAWA TAKESHI , HIRATA YOSHIHIKO , KADOWAKI AKIRA
IPC分类号： H01J9/24 , H01J9/38 , H01J9/385 , H01J9/39 , H01J9/40 , H01J29/94 , H01J31/12
摘要： PROBLEM TO BE SOLVED: To enable manufacturing of plural vacuum air tight container simultaneously in mass production by forming plural exhaust holes for a first multiple substrate, and surface-sticking a second multiple substrates thereto and cutting it. SOLUTION: Plural exhaust holes 6 are formed for plural field emission cathodes formed on a first multiple substrate 2'. A column is formed on either the first multiple substrate 2' or a second multiple substrate 3', a sealing member 8 is applied, and the first multiple substrate 2' and the second multiple substrate 3' are surface-sticked each other. A getter box provided with an exhaust tube 5 is placed at an exhaust hole 6 formed on the first multiple substrate 2'. A sealing member 8 is heated and fused, and the first multiple substrate 2' and the second multiple substrate 3' are sealed each other. Next, plural vacuum air tight containers 1 are separated by cutting. Air is exhausted from an exhaust tube 5 provided with each vacuum air tight container 1 whose inside is evacuated, and an exhaust tube 5 is sealed.

45. 发明专利

JPH09129161A GETTER SUPPORT TOOL 失效
公开(公告)号：JPH09129161A
公开(公告)日：1997-05-16
申请号：JP28345195
申请日：1995-10-31
申请人： FUTABA DENSHI KOGYO KK
发明人： TONEGAWA TAKESHI , KADOWAKI AKIRA , TANAKA GENTARO , ITO SHIGEO , KOGURE YUICHI
IPC分类号： H01J7/18 , H01J29/94 , H01J31/12 , H01J31/15
摘要： PROBLEM TO BE SOLVED: To provide a support tool holding a getter in a vacuum container and having a simple structure. SOLUTION: This getter support tool 30 is provided with a hold section 32 pinching a getter 1 from above and below, the first support leg 34 protruded toward the lower face of the getter 1 integrally with the hold section 32, and the second support leg 35 having a spring property and faced to the upper face of the getter 1 integrally with the hold section 32. The hold section 32 of the getter support tool 30 holds the getter 1 from the outside. The getter 1 fitted to the getter support tool 30 is stored in the getter chamber 20 of a display tube 10. The upper face of the getter 1 emitting a getter material 3 is faced to the outer face of the second substrate 13, and a getter film is formed on the outer face of the second substrate 13. The getter support tool 30 is pressed by the elasticity of the second support leg 35 and fixed. The warp of the second support leg 35 is changed in response to the contact state with the second substrate 13 of an envelope 11. The distance between the upper face of the getter 1 and the second substrate 13 of the envelope 11 is made constant, and the interval between the getter 1 and the second substrate 13 is kept at the desired value.

46. 发明专利

JPH087764A METHOD AND DEVICE FOR MANUFACTURING SUBSTRATE OF FLUORESCENT CHARACTER DISPLAY TUBE 失效
公开(公告)号：JPH087764A
公开(公告)日：1996-01-12
申请号：JP14004894
申请日：1994-06-22
申请人： FUTABA DENSHI KOGYO KK
发明人： TONEGAWA TAKESHI , KOGURE YUICHI , ITO SHIGEO
IPC分类号： H01J9/26 , H01J9/24 , H01J31/15
摘要： PURPOSE:To provide a manufacturing device for a substrate of a fluorescent character display tube, with which the seal part of the envelope is equipped with a high airtightness. CONSTITUTION:A plurality of supply vessels 4 filled with frit glass 10 are accommodated in the first vacuum vessel 2. The frit glass 10 is heated by an infrared lamp house 11 and a gas is emitted from the molten frit glass and exhausted to outside the vacuum vessel. A substrate 20 is heated to a specified temp. by a heating table 21 provided in the second vacuum vessel 3, wherein the two vacuum vessels are in communication above and below in a specified position. Pistons are inserted by a pressing means 14 into the supply vessels set in place, and the molten frit glass is supplied onto the lower board. The heating table is moved by a locating device 22, and the frit glass is applied to the peripheral area of the substrate oversurface. The frit glass applied to the substrate does not contain gas substantially. If this substrate is used in manufacturing envelopes for fluorescent character display tubes, the seal part does not foam in the sealed mounting operations to be made in a vacuum so that the degree of vacuum inside of the envelope is held and its seal part is equipped with a high airtightness.

47. 发明专利

JPH07161285A FIELD EMISSION CATHODE 失效
公开(公告)号：JPH07161285A
公开(公告)日：1995-06-23
申请号：JP34121793
申请日：1993-12-13
申请人： FUTABA DENSHI KOGYO KK
发明人： ITO SHIGEO , YOKOYAMA MIKIO , TONEGAWA TAKESHI , UCHIDA YUJI
IPC分类号： H01J1/30 , H01J1/304
摘要： PURPOSE:To provide a field emission cathode wherein storage gas can be completely removed from a gate electrode. CONSTITUTION:A cathode electrode 2 is formed on an insulating substrate 1, to successively form an insulating layer 4, magnetic material layer 22 and a gate electrode 21 on this cathode electrode 2. An opening 23 is provided in these gate electrode 21, magnetic material layer 22 and insulating layer 4, to form an emitter cone 13 in this opening 23. Since the magnetic material layer 22 is constituted of magnetic material, by high-frequency heating the magnetic material layer 22 heated, the gate electrode 21 formed on the magnetic material layer 22 is locally heated. Consequently, stored gas in the gate electrode 21 is released.

48. 发明专利

JPH05205669A FLUORESCENT DISPLAY DEVICE 失效
公开(公告)号：JPH05205669A
公开(公告)日：1993-08-13
申请号：JP1092292
申请日：1992-01-24
申请人： FUTABA DENSHI KOGYO KK
发明人： ITO SHIGEO , OGAWA YUKIO , YOKOYAMA MIKIO , TONEGAWA TAKESHI , NIIYAMA TAKEHIRO , YONEZAWA SADAHISA , UCHIDA YUJI
IPC分类号： H01J29/86 , H01J29/94 , H01J31/12
摘要： PURPOSE:To provide a fluorescent display device of such a structure that the inside can be evacuated and sealed in a sufficiently high vacuum state without providing any evacuation hole in a counter facial plate and a base board constituting an envelope. CONSTITUTION:A display part having a phosphor layer is provided on the inner surface of a base board 1, and an electric field emitting element is provided on the inner surface of a counter facial plate 2. The board 1 and plate 2 are dislocated in the direction of plane so that a non-mating portion 3 is produced and attached sealedly at a certain spacing through a side face part 4 so as to constitute an envelope 11. An evacuation hole 4a is provided in a certain part of the side face part 4, and an evacuation chamber 7 in communication to the evacuation bole 4a is provided in the non-mating portion 3 of the base board 1. Inside of this envelope 11 is evacuated through the hole 4a and an opening in evacuation chamber 7 which is sealed with a lid 6.

49. 发明专利

JPH04292829A INDIRECTLY-HEATED CATHODE 失效
公开(公告)号：JPH04292829A
公开(公告)日：1992-10-16
申请号：JP8056691
申请日：1991-03-20
申请人： FUTABA DENSHI KOGYO KK
发明人： ITO SHIGEO , TONEGAWA TAKESHI , NIIYAMA TAKEHIRO
IPC分类号： H01J1/22 , H01J1/20
摘要： PURPOSE:To obtain an indirectly-heated cathode having a short temperature drop zone (end cooling zone) generated at the end of the cathode due to heat absorption through a support body, and ensuring high heating efficiency. CONSTITUTION:A coil heater 5 comprising a heater wire 3 and an insulation layer 4 is wound around a core 2, while a coil cathode 8 comprising a fine metal wire 6 and an electron emission material layer 7 is wound around the core 2 adjacent to the coil heater 5. According to this construction, the heating value of the coil heater 5 is large, and the coil cathode 8 is heated by the coil heater 5 from two directions.

50. 发明专利

JPH0487233A ELECTRIC FIELD EMISSION TYPE NEGATIVE ELECTRODE 失效
公开(公告)号：JPH0487233A
公开(公告)日：1992-03-19
申请号：JP20140590
申请日：1990-07-31
申请人： FUTABA DENSHI KOGYO KK
发明人： ITO SHIGEO , TONEGAWA TAKESHI , NIIYAMA TAKEHIRO
IPC分类号： H01J9/02 , H01J1/30 , H01J1/304 , H01J29/04 , H01J31/12
摘要： PURPOSE:To allow the easy manufacture with a simple structure and stably obtain an emission current for a long time by constituting the emitter electrode by a whisker having a multiaxial needle crystal part. CONSTITUTION:An emitter electrode 14 is formed by a whisker 13 having a multiaxial needle crystal part. In the whisker 13, the diameter of the needle crystal part is less than several mum, and the radius of, curvature in the top part is several hundred-several thousand Angstrom . When the whisker 13 is used in the emitter electrode 14, thus, the emitter electrode 14 having an extremely sharp top part can be obtained, so that the electron emission starting voltage can be reduced, and more emission current can be taken out from the emitter electrode 14. As the emitter electrode 14 has the multiaxial needle crystal part, also, the top part can be easily turned in the direction of a gate electrode 15. Thus, the manufacture can be easily performed with a simple structure, and the emission current can be stably obtained for a long time.

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