摘要:
A cathode device includes a plurality of emitter tips having conical tip end portions to emit electrons therefrom. A gate electrode layer has an opening through which the tip end portion of each of the emitter tips is exposed. The diameter of the opening in the gate electrode layer is made smaller than that of the portion of the emitter tip at the juncture thereof with the substrate. In the fabrication of the cathode device, an oxide layer is formed at least on the surface of the formed emitter tip to sharpen the latter. By removing the oxide layer, an inner circumferential wall of the opening of the gate electrode layer is formed on the outside of the conical tip end portion of the emitter tip and extends approximately in parallel to the conical tip end portion of the emitter tip.
摘要:
A cathode device comprising a plurality of emitter tips having conical tip end portions to emit electrons therefrom. A gate electrode layer has an opening through which the tip end portion of each of the emitter tips is exposed. The diameter of the opening in the gate electrode layer is made smaller than that of the portion of the emitter tip at the juncture thereof with the substrate. In the fabrication of the cathode device, an oxide layer is formed at least on the surface of the formed emitter tip to sharpen the latter. By removing the oxide layer, an inner circumferential wall of the opening of the gate electrode layer is formed on the outside of the conical tip end portion of the emitter tip and extends approximately in parallel to the conical tip end portion of the emitter tip.
摘要:
A cathode device comprising a plurality of emitter tips having conical tip end portions to emit electrons therefrom. A gate electrode layer has an opening through which the tip end portion of each of the emitter tips is exposed. The diameter of the opening in the gate electrode layer is made smaller than that of the portion of the emitter tip at the juncture thereof with the substrate. In the fabrication of the cathode device, an oxide layer is formed at least on the surface of the formed emitter tip to sharpen the latter. By removing the oxide layer, an inner circumferential wall of the opening of the gate electrode layer is formed on the outside of the conical tip end portion of the emitter tip and extends approximately in parallel to the conical tip end portion of the emitter tip.
摘要:
An electron emitter element is provided which comprises: an insulating base having a gate opening and a slit communicating to the gate opening; an emitter electrode layer formed in the gate opening and the slit on the insulating base; an emitter tip formed in the gate opening on the emitter electrode layer; a gate electrode layer formed on a top surface of the insulating base as circumscribing the gate opening and extending perpendicular to the emitter electrode layer; and the gate electrode layer and the emitter electrode layer being crossed each other with nothing interposed therebetween.
摘要:
A field-emission cathode having an emitter provided with a substrate, an emitter electrode layer, an insulating layer, a gate electrode layer, the layers being formed on the substrate in this order, needlelike projections for electron emission provided on the emitter electrode layer in a gate opening from which the insulating layer and the gate electrode layer are removed and each grown from one point in a given direction, and different projections for electron emission formed on all or part of the projections. The projections of the emitter are made of metallic particles, and thereby the manufacturing cost is lowered.
摘要:
A flat display is provided, which includes: a cathode plate including emitter electrode lines each having emitter tips provided in pixel areas, and gate electrode lines crossing the emitter electrode lines at the pixel areas; and an anode plate spaced a predetermined distance from the cathode plate in an opposed relation and having an anode conductive layer and fluorescent layers formed on the anode conductive layer in the respective pixel areas; the emitter electrode lines and the gate electrode lines each having transparent portions formed of a transparent conductive film at least in the pixel areas so that light emission from the fluorescent layers can be viewed through the transparent portions.
摘要:
A switch includes a movable portion, a first electrode and a second electrode. The movable portion is provided on a substrate and moves with respect to the substrate. The first electrode is provided on the movable portion. The second electrode is able to contact with the first electrode and is fixed to the substrate. f×Ro×C≦1.6×10−4 when an operation frequency is represented as “f” (Hz), a transmission impedance is represented as “Ro” (Ω), and a capacitance in “OFF” state between the first electrode and the second electrode is represented as “C” (F).
摘要:
The first movable electrode is flat, but the second movable electrode is deformed into a convex shape. A dielectric layer is placed on the facing surface of the second movable electrode. By adjusting a voltage to be applied between the first movable electrode and the second movable electrode, an arbitrary distance is secured between the two electrodes by the electrostatic attractive force generated between the two electrodes, and a desired electrostatic capacitance is obtained. When the distance between the two electrodes is shortened, first, at the center, a part of the first movable electrode and a part of the second movable electrode come into contact with each other with the dielectric layer between them. Then, the first movable electrode and the dielectric layer (second movable electrode) come into contact with each other successively from the contact part towards the periphery side, and the contact area gradually increases.
摘要:
A switch includes a first member, one end of which being secured to a substrate, multiple first beam portions respectively having multiple first contact portions, one ends of the multiple beam portions being secured to the first member, multiple contact switch portions connected in parallel, the multiple first contact portions and multiple second contact portions being in a contact state or in a non-contact state in the multiple contact switch portions, and resistors arranged respectively between the multiple contact switch portions and a common connection point to which the multiple contact switch portions are coupled. When at least one of the multiple switch portions is in a contact state, one of the resistors corresponding to the at least one of the multiple switch portions in a contact state has a resistance value greater than another one of the resistors corresponding to at least one of the multiple contact switch portions that is in a non-contact state.
摘要:
A lower movable electrode 35, having line sections 35a, 35a on both ends and a capacitor section 35b in the center, and an upper movable electrode 37, having line sections 37a, 37a on both ends and a capacitor section 37b in the center, are placed so that the capacitor sections 35b, 37b face each other, and drive electrodes of lower-movable-electrode actuators 27a, 27b, 27c, 27d driving the lower movable electrode 35 and upper-movable-electrode actuators 29a, 29b, 29c, 29d driving the upper movable electrode 37 are electrically separated from the lower movable electrode 35 and upper movable electrode 37. These actuators 27a to 27d and/or 29a to 29d move the lower movable electrode 35 and/or upper movable electrode 37 to adjust the distance between both capacitor sections 35b, 37b, and control the electrostatic capacity.