公开(公告)号：JPH06103935A

公开(公告)日：1994-04-15

申请号：JP13919793

申请日：1993-05-19

Applicant: NIPPON DENKI HOME ELECTRONICS

Inventor： SAKAMOTO YASUMASA

IPC: H01J29/04 ,  H01J1/16 ,  H01J29/46 ,  H01J31/12 ,  H01J31/15

Abstract: PURPOSE:To prevent the vibration of hot-cathodes due to vibration given from the external side, in a display device using linear hot-cathodes as the electron beam source. CONSTITUTION:In this display device, numerous vertical address electrodes 11 to control the vertical knon scanning of the electron beams generated by hot-cathodes, and extending in the horizontal direction, are arranged by lining up in the vertical direction placing at very small intervals. Arch-form hot- cathodes 13 are provided to every width of the vertical address electrodes 11 in the vertical direction. Since both ends of the arch-form hot-cathodes 13 are fixed at every short distance, no vibration is generated even though a vibration is given from the external side.

公开(公告)号：JPH0541053U

公开(公告)日：1993-06-01

申请号：JP9677291

申请日：1991-10-30

IPC: H01J1/16 ,  H01J1/15 ,  H01J29/04 ,  H01J31/15

公开(公告)号：JPH0521241Y2

公开(公告)日：1993-05-31

申请号：JP17426287

申请日：1987-11-13

IPC: H01J1/16 ,  H01J1/18 ,  H01J29/04

公开(公告)号：JPH0313961Y2

公开(公告)日：1991-03-28

申请号：JP11914683

申请日：1983-07-30

IPC: H01J29/04 ,  H01J1/15 ,  H01J1/16 ,  H01J31/00 ,  H01J31/15

公开(公告)号：JPH02257540A

公开(公告)日：1990-10-18

申请号：JP7660289

申请日：1989-03-30

Applicant: CANON KK

Inventor： UDA YOSHIKI ,  NOMURA ICHIRO ,  KANEKO TETSUYA ,  ONO HARUTO ,  SUZUKI HIDETOSHI

IPC: H01J1/16 ,  H01J1/15 ,  H01J1/18 ,  H01J3/08 ,  H01J9/04 ,  H01J29/04 ,  H01J31/15

Abstract: PURPOSE:To prolong the life time of an image display device by furnishing an upper metal layer on the surface of a base board, wherein part of said metal layer constitutes hot electron emitting part, and providing a lower metal layer between the upper metal layer and the base board surface. CONSTITUTION:A plurality of hot electron emitting parts 6 are placed in alignment on an insulation base board 1, wherein the part under these emitting parts 6 is constructed in hollow structure to support conductive support layers 4a, 4b, which work also as conductive layer for current supply to a filament layer 5. Thereunder a cutoff grid 2 is provided on the surface of the base board with an insulating layer 3 interposed. A potential difference is applied between the conductive support layers 4a, 4b and the filament layer 5, and a narrow portion as part of this filament layer 5, i.e., hot electron emitting part 6, runs temperature and emits electrons. This element is prepared using Ta as filament material, Au as cutoff grid layer 2 formed on the insulation base board 1 by means of EB evaporation, SiO2 as insulating layer 3, Cu as conductive support layers 4a, 4b, and Ta as filament layer 5.

公开(公告)号：JPH02215023A

公开(公告)日：1990-08-28

申请号：JP3654189

申请日：1989-02-15

Applicant: NEC CORP

Inventor： NAKAJIMA TORU

IPC: H01J1/15 ,  H01J1/16

Abstract: PURPOSE:To control the life of a hot cathode by the quantity of electron emission material and stabilize the electron emission characteristics by inserting a tantalum chip in a hole processed in a ribbon-shaped hot cathode. CONSTITUTION:A tantalum chip 1 processed in the form of a stepped cylinder is inserted in a hole provided at the center of a normal ribbon-shaped hot cathode 2 consisting of black lead, tungsten, etc., to compose an insertion type tantalum chip hot cathode 3. Current is then applied in a direction 4, for example, in this hot cathode 3 to apply a potential difference in a certain direction at a predetermined timing, so thermoelectrons 5 are emitted from the tantalium chip 1 in a direction toward the side of the lower potential. The life of the thermal cathode 3 is thus controlled by the size of the tantalium chip 1, and if consumption of the tantalium chip 1 proceeds, the formation change of the ribbon-shaped hot cathode 2 is small, thereby a stable heat source can be provided.

公开(公告)号：JPH0158817B2

公开(公告)日：1989-12-13

申请号：JP6265982

申请日：1982-04-16

Applicant: INTAANASHONARU BIJINESU MASHIINZU CORP

Inventor： FURITSUTSUUYURUGEN HOON

IPC: H01J1/16 ,  H01J1/20 ,  H01J37/06

公开(公告)号：JPH01281635A

公开(公告)日：1989-11-13

申请号：JP1738989

申请日：1989-01-26

Applicant: EEV LTD

Inventor： AREN HIYUU PITSUKARINGU

IPC: H01J1/16 ,  H01J1/15

Abstract: PURPOSE: To reduce the effect of a magnetic field on electron beam by providing two thin heat-deformable conductors electrically and mechanically connected together in a common axis area with rotational symmetry around the common axis and causing a heater current to flow through the connections of the conductors into respective areas around the conductors. CONSTITUTION: The rims of conductors 4, 5 are brazed or welded to the outward ends of respectively supporting cylinders 1, 2 coaxially with the conductors 4, 5. The supporting cylinders serve as mechanical supports and means to supply a heater current to the respective conductors 4, 5. The heater current flows from the rim of one of two conductors to the conductor in the radial direction, through the welded portion 7 to the other conductor in the radial direction and then to the rim of the other conductor. As the conductors and the supporting cylinders are formed in rotational symmetry and the welded portion 7 is located at the axial position, the distribution of the heater current is also in rotational symmetry. In this way, there is no magnetic field so as to deflect electron beam from an axis A.

公开(公告)号：JPH01161540U

公开(公告)日：1989-11-09

申请号：JP5879388

申请日：1988-04-30

IPC: H01J1/16 ,  H01J1/15 ,  H01J23/04

公开(公告)号：JPH0128450B2

公开(公告)日：1989-06-02

申请号：JP16986479

申请日：1979-12-26

Applicant: TOSHIBA KK ,  TOSHIBA KIKAI KK

Inventor： TAKIGAWA TADAHIRO ,  SASAKI ISAO ,  MOTOYAMA KAKUKI ,  MEGURO TAKASHI

IPC: H01J1/16