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Class 257/10 - Low workfunction layer for electron emission (e.g., photocathode electron emissive layer)


Subclass of Class 257 - Active solid-state devices (e.g., transistors, solid-state diodes)
Definition: Subject matter wherein a layer of material from which electrons
No. of patents: 441
Last issue date: 05/29/2012


1                      
NumberTitleIssue Date
8188456Thermionic electron emitters/collectors have a doped diamond layer with variable doping concentrations
A thermionic electron emitter/collector includes a substrate and a doped diamond electron emitter/collector layer on the substrate. The doped diamond electron emitter/collector layer has at least a first and a second doping concentration as a function of depth such ...
05/29/2012
8120008Carbon-nanotube based opto-electric device
A carbon nano-tube based photoelectric device includes a substrate and a carbon nanotube (CNT) over the substrate. The CNT comprises a first end and a second end, wherein the CNT has a CNT work function. A high work-function electrode over the substrate is in electr...
02/21/2012
7795608Photocathode
When to-be-detected light is made incident from a support substrate 2 side of a photocathode E1, a light absorbing layer 3 absorbs this to-be-detected light and produces photoelectrons. However, depending on the thickness and the like of the lig...
09/14/2010
7772584Laterally grown nanotubes and method of formation
A semiconductor device has lateral conductors or traces that are formed of nanotubes such as carbon. A sacrificial layer is formed overlying the substrate. A dielectric layer is formed overlying the sacrificial layer. A lateral opening is formed by removing a portio...
08/10/2010
7667223Solid-state optical device
A solid-state optical device includes a solid-state element, a power supplying/retrieving portion on which the solid-state element is mounted, the power supplying/retrieving portion supplying or retrieving electric power to/from the solid-state element, and a glass ...
02/23/2010
7595498Electromagnetic wave generation apparatus and manufacturing method of electromagnetic wave generation apparatus
The present invention provides an electromagnetic wave generation apparatus that is compact and generates a high power terahertz wave. An electromagnetic wave generation apparatus includes: a substrate; a first electrode, having a photoelectron emitting part, formed...
09/29/2009
7586115Light emission from semiconductor integrated circuits
Structures and methods to inject electrons into an insulator from a semiconductor layer that are then collected in a thin layer of a direct semiconductor material which in turn emits light by bandgap recombination. ...
09/08/2009
7531826Photocathode structure and operation
A novel photocathode employing a rectifying junction is described that permits color imaging extending applications for photocathodes in a variety of instruments and night vision devices. ...
05/12/2009
7507987Method of making packets of nanostructures
A method for making packets of nanostructures is presented. The method includes etching trenches in a silicon substrate. Nanostructures are grown in the trenches. The trenches are then filled with a filler material. Any filler and/or nanostructures material extendin...
03/24/2009
7470926Solid-state optical device
A solid-state optical device having: a solid-state element; a power supplying/retrieving portion that supplies or retrieves electric power to/from the solid-state element; and a glass sealing material that seals the solid-state element. The glass sealing material is...
12/30/2008
7442961Image display device
The present invention provides an image display device, by which it is possible to prevent dielectric breakdown between a bottom electrode and a top electrode (top electrode bus line), which make up thin-film type electron sources, and which is free of display defec...
10/28/2008
7432533Encapsulation of electronic devices with shaped spacers
An encapsulation for a device is disclosed. Spacer particles are randomly located in the device region to prevent a cap mounted on the substrate from contacting the active components, thereby protecting them from damage. The spacer particles comprise a base and an u...
10/07/2008
7432521Logical operation element field emission emitter and logical operation circuit
A logical operation element and logical operation circuit are provided that are capable of high speed and a high degree of integration. A logical operation circuit has a construction wherein, in a logical operation element, the anodes of first and second fiel...
10/07/2008
7420261Bulk nitride mono-crystal including substrate for epitaxy
The invention relates to a substrate for epitaxy, especially for preparation of nitride semiconductor layers. Invention covers a bulk nitride mono-crystal characterized in that it is a mono-crystal of gallium nitride and its cross-section in a plane perpendicular to...
09/02/2008
7417367Patterned light emitting devices
Light-emitting devices, and related components, systems and methods are disclosed. A light-emitting device can include a multi-layer stack of materials that includes a light-generating region and a first layer supported by the light-generating region. During use of ...
08/26/2008
7417227Scanning interference electron microscope
The conventional detection technique has the following problems in detecting interference fringes: (1) Setting and adjustment are complex and difficult to conduct; (2) A phase image and an amplitude image cannot be displayed simultaneously; and (3) Detection efficie...
08/26/2008
7399987Planar electron emitter (PEE)
A planar electron emitter, based on the existence of quasi-ballistic transport of electrons is disclosed. In its preferred embodiment the planar electron emitter structure consists of a body of finite gap pure semiconductor or insulator, the said body of macroscopic...
07/15/2008
7394091Composite nano-particle and method for preparing the same
There is provided composite nano-particles comprising nano-crystal particles dispersed stably and individually in suspension in high concentration without mutual aggregation of the nano-particles. A determined amount of pure water or deionized water is poured into a...
07/01/2008
7375366Carbon nanotube and method for producing the same, electron source and method for producing the same, and display
A carbon nanotube has a carbon network film of polycrystalline structure divided into crystal regions along the axis of the tube, and the length along the tube axis of each crystal region preferably ranges from 3 to 6 nm. An electron source includes a carbon nanotub...
05/20/2008
7375400Field emission display device
An image display device is provided in which the overall brightness of an image can be varied without adversely affecting hue and contrast. The image display device includes emitters 16 connected to a cathode electrode 15, a gate electrode 13, a...
05/20/2008
7372193Cold cathode light emitting device with nano-fiber structure layer, manufacturing method thereof and image display
A cold cathode light emitting device includes a plurality of first electrodes, a plurality of insulating layers, a plurality of second electrodes and a third electrode. The insulating layers are laminated on the first electrodes. The second electrodes are provided o...
05/13/2008
7365356Photocathode
The invention relates to a photocathode having a structure that permits a decrease in the radiant sensitivity at low temperatures is suppressed so that the S/N ratio is improved. In the photocathode, a light absorbing layer is formed on the upper layer of a substrat...
04/29/2008
7365482Field emission display including electron emission source formed in multi-layer structure
A field emission display includes first and second substrates provided opposing one another with a predetermined gap therebetween; electron emission sources provided on one of the first and second substrates; an electron emission inducing assembly for inducing the e...
04/29/2008
7362048Light emitting device with blue light led and phosphor components
A light emitting device containing a semiconductor light emitting component and a phosphor, the phosphor is capable of absorbing a part of light emitted by the light emitting component and emitting light of a wavelength different from that of the absorbed light, is ...
04/22/2008
7358553System and method for reducing shorting in memory cells
An MRAM device includes an array of magnetic memory cells having an upper conductive layer and a lower conductive layer separated by a barrier layer. To reduce the likelihood of electrical shorting across the barrier layers of the memory cells, spacers can be formed...
04/15/2008
7355268High reflector tunable stress coating, such as for a MEMS mirror
An optical device having a high reflector tunable stress coating includes a micro-electromechanical system (MEMS) platform, a mirror disposed on the MEMS platform, and a multiple layer coating disposed on the mirror. The multiple layer coating includes a layer of si...
04/08/2008
7354781Method of manufacturing field emission device
A method of manufacturing a field emission device (FED) using a photoresist for performing multi-patterning processes, whereby different structures can be multi-patterned using a single photoresist mask. The photoresist has a solubility to a solvent by post-exposure...
04/08/2008
7348718Discharge electrode implemented by a wide bandgap semiconductor and a discharge lamp using the same
A discharge electrode emitting electrons into a discharge gas, encompasses an emitter and current supply terminals configured to supply electric current to the emitter. The emitter embraces a wide bandgap semiconductor having at 300 K a bandgap of 2.2 eV or wider. A...
03/25/2008
7348531Photoelectric conversion device and image pickup device using electron emission devices
Disclosed is an image pickup device capable of greatly reducing delay in drive signals supplied to field emission devices, and cross-talk and the like that originate in these drive signals. The image pickup device comprises a photoelectric conversion film for receiv...
03/25/2008
7342817System and method for writing data using an electron beam
A system for writing data using an electron beam to change the structure of a small section of a storage medium and includes at least one focused electron beam source. The duration of a write cycle of the focused electron beam source is controlled at least in part o...
03/11/2008
7339201Light emitting diode and process for producing the same
A light emitting diode includes a casing having a concave surface, a reflecting surface formed by depositing a metallic layer on a concave surface thereof, and a lead having a light emitting element fitted thereto so as to confront the reflecting surface. A cationic...
03/04/2008
7332736Article comprising gated field emission structures with centralized nanowires and method for making the same
This invention provides novel methods of fabricating novel gated field emission structures that include aligned nanowire electron emitters (individually or in small groups) localized in central regions within gate apertures. It also provides novel devices using nano...
02/19/2008
7329917Permeable capacitor electrode
The present teachings describe a container capacitor that utilizes an etchant permeable lower electrode for the formation of single or double-sided capacitors without excessive etching back of the periphery of the use of sacrificial spacers. The present teachings fu...
02/12/2008
7329552Field effect transistor fabrication methods, field emission device fabrication methods, and field emission device operational methods
The present invention includes field effect transistors, field emission apparatuses, thin film transistors, and methods of forming field effect transistors. According to one embodiment, a field effect transistor includes a semiconductive layer configured to form a c...
02/12/2008
7326900Two-dimensional weak radiation detector with a detection means based on orthogonal modulation
A weak light detector (40) which can detect two-dimensional weak radiation at a high speed with high precision. The fluorescence from the DNA chip (46) is incident on a detection part (56) of a detection unit (52). The detection unit (...
02/05/2008
7301271Light-emitting devices with high light collimation
Light-emitting devices, and related components, systems and methods are disclosed. In some embodiments, the devices (e.g., light-emitting diodes) comprise a multi-layer stack of materials including a light generating region and a first layer supported by the light g...
11/27/2007
7292495Integrated circuit having a memory with low voltage read/write operation
An integrated circuit with a low voltage read/write operation is provided. The integrated circuit may include a processor and a plurality of memory cells organized in rows and columns and coupled to the processor, wherein a row of memory cells comprises a word line ...
11/06/2007
7288739Method of forming an opening or cavity in a substrate for receiving an electronic component
A method of forming an opening or cavity in a substrate, for receiving an electronic component, consists of or includes providing a patterned opaque masking layer on or adjacent a first major surface of the substrate, the masking layer having an opening overlying th...
10/30/2007
7288881Electron emitter and light emission element
Primary electrons impinge upon an emitter section of an electron emitter for causing emission of the secondary electrons. The secondary electrons are outputted from the electron emitter. The secondary electrons emitted from the emitter section are accelerated in an ...
10/30/2007
7285835Low power magnetoelectronic device structures utilizing enhanced permeability materials
Low power magnetoelectronic device structures and methods for making the same are provided. One magnetoelectronic device structure (100) comprises a programming line (104), a magnetoelectronic device (102) magnetically coupled to the programming...
10/23/2007
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