Abstract:
Particles, which may include nanoparticles, are mixed with carbon nanotubes (803) and deposited on a substrate (204) to form a cold cathode. The particles enhance the field emission characteristics of the carbon nanotubes. An additional activation step may be performed on the deposited carbon nanotube mixture (206) to further enhance the emission of electrons.
Abstract:
Electronic billboards (401), which may be indoor or outdoor are located in various geographic areas. Associated with each billboard is a web address (405). A client desiring to display information, such as an advertisement, on any selected electronic billboard (401) can upload the information over the internet (403) to the server (402) implementing the billboard website. The client can select the time and duration for the information to be displayed, and can even purchase the display time using a credit card or through the use of some other type of account.
Abstract:
The present invention is directed towards metallized carbon nanotubes, methods for making metallized carbon nanotubes using an electroless plating technique, methods for dispensing metallized carbon nanotubes onto a substrate, and methods for aligning magnetically-active metallized carbon nanotubes. The present invention is also directed towards cold cathode field emitting materials comprising metallized carbon nanotubes, and methods of using metallized carbon nanotubes as cold cathode field emitters.
Abstract:
A multiplexed grid structure(406) for electron emission displays allows each of the grid portions(402)to be independently controllable from each other so that electrons can be emitted from their respective pixel sites as each grid portion is addressed.
Abstract:
A cathode assembly includes a substrate (100), a plurality of electrically conducting strips (101), deposited on the substrate, and a continuous layer of diamond material (200) deposited over the plurality of electrically conducting strips and portions of the substrate exposed between the plurality of electrically conducting strips.
Abstract:
A plurality of field emission cathodes (601) generate an emission of electrons, wherein the emission of electrons is then controlled and focused using various electrodes (602, 603, 604) to produce an electron beam. Horizontal and vertical deflection techniques (605, 606, respectively), similar to those used within a cathode ray tube, operate to scan the individual electron beams onto portions of a phosphor screen (401) in order to generate images. The use of the plurality of field emission cathodes provides for a flatter screen depth than possible with a typical cathode ray tube.
Abstract:
Electronic billboards (401), which may be indoor or outdoor are located in various geographic areas. Associated with each billboard is a web address (405). A client desiring to display information, such as an advertisement, on any selected electronic billboard (401) can upload the information over the internet (403) to the server (402) implementing the billboard website. The client can select the time and duration for the information to be displayed, and can even purchase the display time using a credit card or through the use of some other type of account.
Abstract:
A film (705) (carbon and/or diamond) for a field emitter device, which may be utilized within a computer display, is produced by a process utilizing etching of a substrate (701) and then depositing the film. The etching step creates nucleation sites on the substrate for the film deposition process. With this process patterning of the emitting film is avoided. A field emitter device can be manufactured with such a film. A metal film can also be deposited (702), patterned by photolithography (703) and etch (704) to prepare nucleation sites.
Abstract:
A film (carbon and/or diamond) for a field emitter device, which may be utilized within a computer display, is produced by a process utilizing etching of a substrate (704) and then depositing the film (705). The etching step creates nucleation sites on the substrate for the film deposition process. With this process patterning of the emitting film is avoided. A field emitter device can be manufactured with such a film. A field emission device results where the cathod has a continuous film that has not been subjected to etching, and thus has superior emission properties. A pixel in the cathode includes the emitting film deposited directly on the substrate with the conductor deposited on one or more sides of the emitter film. In one embodiment the emitter is in a window formed in the conductor layer.
Abstract:
A carbon film (101) having an area of insulating material surrounded by an area of conducting material, and an area of material between the insulating material and the area of conducting material having a graded dielectric constant which varies from high to low from the area of insulating material to the area of conducting material.