Abstract:
A solid state sub-nanometer-scale electron beam emitter comprising a multi-layered structure having a nano-tip electron emitter and tunnel emission junction formed on substrate, an initial electron beam extraction electrode, a “nano-sandwich Einzel” electrode, and a topmost protective layer.
Abstract:
A field emission device (1) may be used for emitting electrons in, for example, a field emission display (FED). Field emission tips (40) are used for the emitting of electrons in the field emission device (1). In operation of the field emission device (1) a voltage is applied between a first electrode (4) having electrical contact with the field emission tip (40) and a second electrode (34) to make the field emission tip (40) emit electrons. To form a field emission tip (40) a layer of liquid material is applied on a substrate (2) provided with the first electrode (4). The layer of liquid material is embossed with a patterned stamp and subsequently cured to form a field emission tip structure (20). A conductive film (38) is applied on the field emission tip structure (20) to form a field emission tip (40) that has electrical contact with the first electrode (4).
Abstract:
The invention relates to the structure of a field emitter device, to the method of fabricating a field emitter device and to the use of the field emitter device in the technical field of flat panel displays. The field emission device comprises an array (1) of widely-spaced tips (2) for emitting electrons and a perforated extracting electrode (3) facing the array of tips. An individual series resistor is formed by each of said tips itself. The widely-spaced tips are not surrounded by a layer of electrically insulating material. The tips are not surrounded by an insulating layer and the tip end is not surrounded by a gate or extraction electrode. This avoids failures like shorts between the cathode electrode and the gate or extraction electrode which could occur due to inaccurate coating or etching processes and enhances the reliability and the life-time of the array of tips. To fabricate the field emission device a micromechanically manufactured array (1) of widely-spaced tips (2) and a micromechanically manufactured perforated extracting electrode (3) are provided. The outer sides of the perforated extracting electrode are bonded to the array in a way that the perforated extracting electrode is facing the array. With the array of widely-spaced tips and the perforated extracting electrode being fabricated separately and bonded together subsequently, both the number of process steps required for each of the two parts and the manufacturing process costs are reduced.
Abstract:
A field emission device (1) may be used for emitting electrons in, for example, a field emission display (FED). Field emission tips (40) are used for the emitting of electrons in the field emission device (1). In operation of the field emission device (1) a voltage is applied between a first electrode (4) having electrical contact with the field emission tip (40) and a second electrode (34) to make the field emission tip (40) emit electrons. To form a field emission tip (40) a layer of liquid material is applied on a substrate (2) provided with the first electrode (4). The layer of liquid material is embossed with a patterned stamp and subsequently cured to form a field emission tip structure (20). A conductive film (38) is applied on the field emission tip structure (20) to form a field emission tip (40) that has electrical contact with the first electrode (4).
Abstract:
Diamond microtip field emitters (25) are fabricated for use in diode and triode vacuum microelectronic devices, sensors and displays. Ultra-sharp emitter tips are formed in a fabrication process in which diamond is deposited into mold cavities in a two step deposition sequence. During deposition of the diamond, the graphite content is carefully controlled to enhance emission performance. The tips or the emitters (25) may be treated by post fabrication processes, such as sharpening or doping with gold.
Abstract:
Verfahren zur Herstellung stabförmiger oder zylinderförmiger Strukturen im nm-Bereich auf einem Substrat (1) aus Silizium, bei dem in dem Loch einer Maskenschicht (2) aus Oxid ein erster Zylinder (3) aus Silizium selektiv epitaktisch abgeschieden wird, die Maskenschicht (2) entfernt wird, das Silizium zu einer Oxidschicht (4) einer solchen Dicke (d) oxidiert wird, daß von dem ersten Zylinder (3) der Höhe (h) ein dünnerer zweiter Zylinder (5) mit praktisch derselben Höhe (H) übrig bleibt und bei dem in einem letzten Schritt diese Oxidschicht (4) entfernt wird, so daß der zweite Zylinder (5) einen freistehenden Siliziumstab auf der Oberfläche des Substrates (1) bildet.
Abstract:
A solid state sub-nanometer-scale electron beam emitter comprising a multi-layered structure having a nano-tip electron emitter and tunnel emission junction formed on substrate, an initial electron beam extraction electrode, a “nano-sandwich Einzel” electrode, and a topmost protective layer.