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    Electron multiplier, e.g. for a field emission display
    52.
    发明专利
    Electron multiplier, e.g. for a field emission display 未知

    公开(公告)号：GB2293042A

    公开(公告)日：1996-03-13

    申请号：GB9417740

    申请日：1994-09-03

    Applicant: IBM

    Inventor： BEETESON JOHN STUART ,  LOWE ANTHONY C

    IPC: H01J31/12 ,  H01J43/24 ,  H01J9/12 ,  H01J29/02 ,  H01J31/20

    Abstract: An electron multiplier comprises first and second perforate laminar electrodes (370, 380). An electrically non-conductive layer (310), e.g. of aluminium oxide, separates the electrodes. The layer defines channels (330) between perforations of the first electrode and perforations of the second electrode. The channels are lined with an electrically resistive layer (350), e.g. tin oxide, and an electron emissive layer (360), e.g. comprising lead, overlying the electrically resistive layer. The electron multiplier is especially useful for amplifying electron beam current in a field emission display, the channels (330) being aligned with an array of electron emissive tips.

    Cordless coupling for peripheral devices.
    53.
    发明专利
    Cordless coupling for peripheral devices. 未知

    公开(公告)号：GB2291722A

    公开(公告)日：1996-01-31

    申请号：GB9414361

    申请日：1994-07-15

    Applicant: IBM

    Inventor： BEETESON JOHN STUART ,  KERIGAN SHAUN

    IPC: G06F13/00 ,  G09G5/00 ,  G06F3/00 ,  G06F3/023

    Abstract: Data processing apparatus includes a system unit (10), a display device (20) for displaying data generated by the system unit (10), display communication means (60,70) for communicating data between the display device (20) and the system unit (10), a peripheral device (30), and peripheral communication means (80,60) for communicating data between the peripheral device (30) and the system unit (10). The peripheral communication means (80,60) includes a wire-less communication link (80) between the display device (20) and the peripheral device (30).

    57.
    发明专利
    未知

    公开(公告)号：DE69937170D1

    公开(公告)日：2007-11-08

    申请号：DE69937170

    申请日：1999-07-01

    Applicant: IBM

    Inventor： BEETESON JOHN STUART ,  KNICKERBOCKER JOHN ULRICH ,  KNOX ANDREW RAMSAY ,  LOWE ANTHONY CYRIL

    IPC: H01J1/46 ,  H01J29/46 ,  H01J3/02 ,  H01J29/02 ,  H01J29/68 ,  H01J31/12

    Abstract: An electron source comprises a cathode means, and an extractor grid used to extract electrons from the cathode. The extractor grid is formed by etching a plurality of apertures in the material. A plurality of spacing members for spacing the extractor grid at a constant, predetermined spacing from the cathode are used. Each of the spacing members is formed by etching around a substantial portion of the periphery of the aperture and folding a remaining portion of the periphery of the aperture at substantially a right angle to the planar material.

    58.
    发明专利
    未知

    公开(公告)号：DE69719716T2

    公开(公告)日：2003-11-20

    申请号：DE69719716

    申请日：1997-12-16

    Applicant: IBM

    Inventor： BEETESON JOHN STUART ,  KNOX ANDREW RAMSEY

    IPC: H01J31/12 ,  H01J29/46 ,  H01J29/52

    Abstract: A display device comprises field emission cathode means for emitting electrons. A plurality of electron beams are formed from the field emission cathode means. A screen, which has a phosphor coating facing the cathode receives the plurality of electron beams. The phosphor coating comprises a plurality of pixels each corresponding to a different one of said plurality of electron beams. A grid electrode means is disposed between the cathode means and the screen for controlling the flow of electrons from the cathode means. The field emission cathode means comprises extractor grid means, having a plurality of separately addressable portions associated with each of said plurality of pixels. A gamma transfer function between input data value and beam current is provided in order to emulate a conventional CRT. This can be achieved by use of a lookup table.

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