Shaped cathode for a field emission arrangement

    公开(公告)号:EP2784800B1

    公开(公告)日:2018-12-05

    申请号:EP13160768.1

    申请日:2013-03-25

    Inventor: Tirén, Jonas

    CPC classification number: H01J63/06 H01J9/025 H01J19/24

    Abstract: The present invention relates to a field emission lighting arrangement, comprising an anode and a cathode, where the shape of the cathode is selected based on the shape of a evacuated envelope in which the anode and cathode is provided. The inventive shape of cathode allows for an improved uniformity of an electric field provided between the anode and cathode during operation of the field emission lighting arrangement. The invention also relates to a corresponding method for selecting a shape of such a cathode.

    METHOD FOR MANUFACTURING NANOSTRUCTURES FOR A FIELD EMISSION CATHODE
    93.
    发明公开
    METHOD FOR MANUFACTURING NANOSTRUCTURES FOR A FIELD EMISSION CATHODE 审中-公开
    VERFAHREN ZUR HERSTELLUNG VON NANOSTRUKTURENFÜREINE FELDEMISSIONSKATHODE

    公开(公告)号:EP3096341A1

    公开(公告)日:2016-11-23

    申请号:EP15167996.6

    申请日:2015-05-18

    Abstract: The present invention relates to the field of field emission lighting, and specifically to a method for forming a field emission cathode. The method comprises arranging a growth substrate in a growth solution comprising a Zn-based growth agent, the growth solution having a pre-defined pH-value at room temperature; increasing the pH value of the growth solution to reach a nucleation phase; upon increasing the pH of the solution nucleation starts. The growth phase is then entered by decreasing the pH. The length of the nanorods is determined by the growth time. The process is terminated by increasing the pH to form sharp tips.
    The invention also relates to a structure for such a field emission cathode and to a lighting arrangement comprising the field emission cathode.

    Abstract translation: 本发明涉及场发射照明领域,具体涉及形成场致发射阴极的方法。 该方法包括将生长底物置于包含Zn基生长剂的生长溶液中,该生长溶液在室温下具有预定义的pH值; 增加生长溶液的pH值达到成核期; 在增加溶液的pH后,开始成核。 然后通过降低pH进入生长期。 纳米棒的长度由生长时间决定。 通过增加pH以形成锋利的尖端终止该过程。 本发明还涉及这种场致发射阴极的结构和包括场发射阴极的照明装置。

    Field emission lighting arrangement
    95.
    发明公开
    Field emission lighting arrangement 审中-公开
    Feldemissionsbeleuchtungsanordnung

    公开(公告)号:EP2472552A1

    公开(公告)日:2012-07-04

    申请号:EP10197167.9

    申请日:2010-12-28

    Inventor: Hu, Qiu-Hong

    Abstract: The present invention relates to a field emission lighting arrangement, comprising an evacuated envelope inside of which an anode structure comprising a phosphor layer and a field emission cathode are arranged, the anode structure being configured to receive electrons emitted by the field emission cathode and to generate light when a voltage is applied between the anode structure and the field emission cathode, wherein the evacuated envelope comprises a light exit portion and a light reflective portion being adapted to reflect light generated at the anode structure, and the field emission lighting arrangement further comprises a heat sink arranged outside of the evacuated envelope and thermally coupled to the light reflective portion.
    Advantages with the invention includes increase lifetime of the field emission lighting arrangement.

    Abstract translation: 本发明涉及一种场致发射照明装置,包括一个抽真空的外壳,其中布置了一个包括一个荧光体层和一个场致发射阴极的阳极结构,阳极结构被配置为接收由场致发射阴极发射的电子并产生 在阳极结构和场发射阴极之间施加电压时的光,其中所述抽真空的外壳包括适于反射在阳极结构处产生的光的光出射部分和光反射部分,并且场致发射照明装置还包括 散热器布置在真空外壳的外部并热耦合到光反射部分。 本发明的优点包括增加场发射照明装置的寿命。

    Field emission lighting arrangement

    公开(公告)号:EP2472553B1

    公开(公告)日:2018-06-27

    申请号:EP10197168.7

    申请日:2010-12-28

    Inventor: Hu, Qiu-Hong

    Abstract: The present invention relates to a field emission lighting arrangement, comprising an anode structure at least partly covered by a phosphor layer, an evacuated envelope inside of which an anode structure is arranged, and a field emission cathode, wherein the field emission lighting arrangement is configured to receive a drive signal for powering the field emission lighting arrangement and to sequentially activate selected portions of the phosphor layer for emitting light. The same control regime may be applied to an arrangement comprising a plurality of field emission cathodes and a single field emission anode. Advantages with the invention includes increase lifetime of the field emission lighting arrangement.

    Field emission light source
    98.
    发明公开
    Field emission light source 审中-公开
    Feldemissionslichtquelle

    公开(公告)号:EP3035368A1

    公开(公告)日:2016-06-22

    申请号:EP14198645.5

    申请日:2014-12-17

    Abstract: The present invention generally relates to a field emission light source and specifically to a compact field emission light source configured for two-stage light conversion. The field emission light source comprises a field emission cathode (106) comprising a plurality of nanostructures (104) formed on a wafer, an electrically conductive anode structure (108) comprising a first wavelength converting material (118) arranged to cover at least a portion of the anode structure, and means for forming an hermetically sealed and subsequently evacuated cavity (306) between the substrate of the field emission cathode and the anode structure. In a preferred embodiment, the anode structure includes a first wavelength converting material (118) comprising a phosphor material (e.g. ZnS), and a second wavelength converting material (120) comprising quantum dots generating light at a second wavelength range when receiving light at the first wavelength range, where the second wavelength range is at least partly higher than the first wavelength range.

    Abstract translation: 本发明一般涉及一种场致发射光源,特别涉及一种配置为两级光转换的紧凑型场发射光源。 场发射光源包括场致发射阴极(106),其包括形成在晶片上的多个纳米结构(104),导电阳极结构(108),包括第一波长转换材料(118),其被布置成覆盖至少一部分 阳极结构的衬底和用于在场致发射阴极的衬底和阳极结构之间形成气密密封并随后抽空的空腔(306)的装置。 在优选实施例中,阳极结构包括包括磷光体材料(例如ZnS)的第一波长转换材料(118)和包括量子点的第二波长转换材料(120),所述第二波长转换材料包括在第二波长转换材料 第一波长范围,其中第二波长范围至少部分高于第一波长范围。

    Shaped cathode for a field emission arrangement
    99.
    发明公开
    Shaped cathode for a field emission arrangement 审中-公开
    Geformte KathodefürFeldemissionsanordnung

    公开(公告)号:EP2784800A1

    公开(公告)日:2014-10-01

    申请号:EP13160768.1

    申请日:2013-03-25

    Inventor: Tirén, Jonas

    CPC classification number: H01J63/06 H01J9/025 H01J19/24

    Abstract: The present invention relates to a field emission lighting arrangement, comprising an anode and a cathode, where the shape of the cathode is selected based on the shape of a evacuated envelope in which the anode and cathode is provided. The inventive shape of cathode allows for an improved uniformity of an electric field provided between the anode and cathode during operation of the field emission lighting arrangement. The invention also relates to a corresponding method for selecting a shape of such a cathode.

    Abstract translation: 本发明涉及一种包括阳极和阴极的场发射照明装置,其中阴极的形状基于提供阳极和阴极的真空外壳的形状来选择。 本发明的阴极形状允许在场发射照明装置的操作期间在阳极和阴极之间提供的电场的均匀性得到改善。 本发明还涉及用于选择这种阴极的形状的相应方法。

    Field emission display
    100.
    发明公开
    Field emission display 有权
    Verfahren zur Herstellung einer Feldemissionsanzeige

    公开(公告)号:EP2079095A1

    公开(公告)日:2009-07-15

    申请号:EP08150191.8

    申请日:2008-01-11

    Abstract: The present invention relates to a method for the manufacturing of a field-emission display (300), comprising the steps of arranging an electron-emission receptor (302) in an evacuated chamber, arranging a wavelength converting material (304) in the vicinity of the electron-emission receptor (302), and arranging an electron-emission source (100) in the evacuated chamber, the electron-emission source (100) adapted to emit electrons towards the electron-emission receptor (302), wherein the electron-emission source (100) is formed by providing a substrate, forming a plurality of ZnO-nanostructures on the substrate, wherein the ZnO-nanostructures each have a first end and a second end, and the first end is connected to the substrate, arranging an electrical insulation to electrically insulate the ZnO-nanostructures from each other, connecting an electrical conductive member to the second end of a selection of the ZnO-nanostructures, arranging a support structure onto of the electrical conductive member, and removing the substrate, thereby exposing the first end of the ZnO-nanostructures.
    Advantages with the invention include for example increased lifetime of the field-emission display as there will be a smaller sections of the nanostructures that will be non-height-aligned. Furthermore, by not having to height align the nanostructures using an expensive etching, grinding, or similar method step, it is possible to achieve a less expensive end product.
    The present invention also relates to a corresponding field-emission display.

    Abstract translation: 本发明涉及一种用于制造场致发射显示器(300)的方法,包括以下步骤:在真空室内布置电子发射接收器(302),将波长转换材料(304)布置在 电子发射接收器(302),并且在真空室中布置电子发射源(100),适于向电子发射受体(302)发射电子的电子发射源(100) 发射源(100)通过提供衬底形成,在衬底上形成多个ZnO-纳米结构,其中ZnO纳米结构各自具有第一端和第二端,并且第一端连接到衬底, 电绝缘以将ZnO-纳米结构彼此电绝缘,将导电构件连接到选择的ZnO-纳米结构的第二端,将支撑结构布置在电气结构上 并且去除衬底,从而暴露ZnO-纳米结构的第一端。 本发明的优点包括例如场致发射显示器的寿命增加,因为将具有非高度对准的纳米结构的较小部分。 此外,通过不需要使用昂贵的蚀刻,研磨或类似的方法步骤使纳米结构高度对准,可以实现较便宜的最终产品。 本发明还涉及相应的场致发射显示器。

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