摘要:
A method for controlling spacer (108) visibility in a field emission display (100) includes the steps of modifying pixel data for transmission to a plurality of pixels (110) in a first region (112) adjacent to a spacer (108) to render the spacer (108) invisible to a viewer of the field emission display (100). A field emission display (100) with a spacer visibility correction circuit (104) that modifies pixel data for transmission to a plurality of pixels (110) in a first region (112) adjacent to a spacer (108).
摘要:
Before submitting a sample, including a first material layered upon a substrate, to an ion milling process, whereby a second material is sputtered onto the surface of the first material and the sample is then submitted to an etching process, an irregularity is formed on the surface of the first material. The overall process results in the formation of cones, or micro-tip structures, which may then be layered with a layer of low work function material, such as amorphous diamond. The irregularity in the surface of the first material may be formed by polishing, sandblasting, photolithography, or mechanical means such as scratching.
摘要:
A field emission cathode for use in flat panel displays is disclosed comprising a layer of conductive material and a layer of amorphic diamond film, functioning as a low effective work-function material, deposited over the conductive material to form emission sites. The emission sites each contain at least two sub-regions having differing electron affinities. Use of the cathode to form a computer screen is also disclosed along with the use of the cathode to form a fluorescent light source.
摘要:
A field emission display (100) includes a cathode plate (110) having a plurality of electron emitters (114), an anode plate (122) having an anode (124) connected to a potential source (126), and an anode voltage pull-down circuit (127) having an input (106) and an output (104). Output (104) is connected to anode (124), and input (106) is connected to potential source (126). Preferably, anode voltage pull-down circuit (127) causes an anode voltage (120) at anode (124) to drop to about ground potential prior to generation of a discharge current by electron emitters (114) for neutralizing positively electrostatically charged surfaces (137, 138) within field emission display (100).
摘要:
A field emission cathode for use in flat panel displays is disclosed comprising a layer of conductive material and a layer of amorphic diamond film, functioning as a low effective work-function material, deposited over the conductive material to form emission sites. The emission sites each contain at least two sub-regions having differing electron affinities. Use of the cathode to form a computer screen is also disclosed along with the use of the cathode to form a fluorescent light source.
摘要:
A display device for use in conjunction with a computer system includes a cathode having a layer of conductive material and a layer of low-effective work function material deposited over the conductive material wherein the low-effective work function material has an emission surface comprising a plurality of distributed localized electron emission sites. The emission sites may have electrical properties which are discontinuous from each other. The emission surface may be relatively flat.
摘要:
A system and method is available for fabricating a field emitter device, where in an emitter material, such as copper, is deposited over a resistive layer which has been deposited upon a substrate. Two ion beam sources are utilized. The first ion beam source is directed at a target material, such as molybdenum, for sputtering molybdenum onto the emitter material. The second ion beam source is utilized to etch the emitter material to produce cones or micro-tips. A low work function material, such as amorphous diamond, is then deposited over the micro-tips.
摘要:
A field emission cathode is provided which includes a substrate and a conductive layer disposed adjacent the substrate. An electrically resistive pillar is disposed adjacent the conductive layer, the resistive pillar having a substantially flat surface spaced from and substantially parallel to the substrate. A layer of diamond is disposed adjacent the surface of the resistive pillar.
摘要:
A system for determining an amount of power supplied from a power amplifier may include a power amplification circuit having a characteristic thermal resistance, a first temperature sensor for sensing a first temperature associated with the power amplification circuit when the power amplification circuit is receiving power from the power source, a second temperature sensor for sensing a second temperature associated with an environment occupied by the power amplification circuit, and a processor coupled with the first temperature sensor and the second temperature sensor for determining an amount of power dissipation utilizing (A) a temperature difference determined utilizing the first temperature and the second temperature and (B) the characteristic thermal resistance of the power amplification circuit.
摘要:
A power amplifier comprises a distributed pre-driver, digital signal adjuster, a distributed high power amplifier; and an integrated coupler-detector unit. The distributed pre-driver, the digital signal adjuster, the distributed high power amplifier and the integrated coupler-detector unit are formed at an interface of a Gallium Nitride layer and an Aluminum Gallium Nitride layer of a monolithic microwave integrated circuit device.