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Mountable Printable Placard With Headband
A resilient headband in a shape for being mounted on the head of the user. The headband is equipped with a longitudinal slotted member for holding a placard.
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| Number | Title | Issue Date |
| 7304420 | Field emission device A field emission device having improved properties and which finds use in display devices, such as a flat panel displays. Known devices and displays suffer from problems such as complexity of fabrication and limited color gamut. The present device provides a field e... | 12/04/2007 |
| 7281492 | System and method for generating a discharge in gases A method of generating an electrical discharge in a gas contained in a sealed enclosure. The method includes driving a helical coil resonator at an RF frequency to generate an RF electric-magnetic field sufficient to generate an electrical discharge in the high pres... | 10/16/2007 |
| 7215697 | Matched impedance controlled avalanche driver Controlled avalanche driver circuits and apparatuses for gas lasers. One embodiment typically delivers short, rapid, high voltage ionizing pulses in combination with an electric field whose magnitude is too low to sustain a normal glow discharge. The plasma is typic... | 05/08/2007 |
| 7071631 | Electromagnetic pulse device An electromagnetic pulse device having a conductive coil, and optionally a conductive core disposed within the coil and spaced apart there from. One or more plasma discharge devices are disposed at least partially along a length of the conductive coil and are spaced... | 07/04/2006 |
| 7033238 | Method for making large-area FED apparatus A method is provided for forming and associating a lower section of a large-area field emission device (“FED”) that is sealed under a predetermined level of vacuum pressure with an upper section of a large-area FED. The upper section of the FED includes a facepl... | 04/25/2006 |
| 7023607 | Double substrate reflective spatial light modulator with self-limiting micro-mechanical elements A spatial light modulator including first and second substrate, and an array of deflectable elements disposed within a gap between the first and second substrates is disclosed herein. For electrostatically actuating the deflectable elements, an array of electrodes a... | 04/04/2006 |
| 7021982 | Manufacturing of field emission display screens by application of phosphor particles and conductive binders Conductive or semiconductive binders, both inorganic and organic, are used for providing sufficient binding action to hold powder phosphor particles together, as well as to the glass screen of a field emission display device. ... | 04/04/2006 |
| 7012733 | Double substrate reflective spatial light modulator with self-limiting micro-mechanical elements A spatial light modulator including first and second substrate, and an array of deflectable elements disposed within a gap between the first and second substrates is disclosed herein. For electrostatically actuating the deflectable elements, an array of electrodes a... | 03/14/2006 |
| 6947200 | Double substrate reflective spatial light modulator with self-limiting micro-mechanical elements A spatial light modulator includes an upper optically transmissive substrate held above a lower substrate containing addressing circuitry. One or more electrostatically deflectable elements are suspended by hinges from the upper substrate. In operation, individual m... | 09/20/2005 |
| 6917043 | Individually addressable cathodes with integrated focusing stack or detectors Systems and method are described for addressable field emission array (AFEA) chips. A plurality of individually addressable cathodes are integrated with an electrostatic focusing stack and/or a plurality of detectors on the addressable field emission array. The syst... | 07/12/2005 |
| 6841936 | Fast recovery electron multiplier An improved electron multiplier bias network that limits the response of the multiplier when the multiplier is faced with very large input signals, but then permits the multiplier to recover quickly following the large input signal. In one aspect, this invention pro... | 01/11/2005 |
| 6459218 | Inductively powered lamp unit An inductively powered lamp unit 806 is fixed onto a substrate and over a position where a primary inductive loop 803 is spread apart (as at 807). At such sites, a horizontal (or at least parallel to the surface of the substrate) component of alternating ... | 10/01/2002 |
| 5909203 | Architecture for isolating display grids in a field emission display The present invention teaches a field emission display ("FED") architecture for isolating display grids, wherein an FED has a plurality of pixels. Each of the pixels comprise at least two field emitter tips for displaying information to the pixel and a pi... | 06/01/1999 |
| 5847515 | Field emission display having multiple brightness display modes A field emission display includes a display screen and a cathodoluminescent coating disposed on a conductive inner surface of the display screen. An extraction grid is disposed a predetermined distance away from the inner surface and has a plurality of op... | 12/08/1998 |
| 5786657 | Field emission electron gun capable of minimizing nonuniform influence of surrounding electric potential condition on electrons emitted from emitters In a field emission electron gun including emitters (104) on predetermined parts of a substrate (409), an insulator film (105) on a remaining part of the substrate, a first gate electrode (101) on the insulator film so as to surround the emitters with a s... | 07/28/1998 |
| 5754149 | Architecture for isolating display grids in a field emission display The present invention teaches a field emission display ("FED") architecture for isolating display grids, wherein an FED has a plurality of pixels. Each of the pixels comprise at least two field emitter tips for displaying information to the pixel and a pi... | 05/19/1998 |
| 5721472 | Identifying and disabling shorted electrodes in field emission display Methods and apparatus for identifying and disabling shorted electrode pain (such as field emitter tip electrodes shorted to grid electrodes) in a field emission display by applying a test voltage across the two electrodes in each pair. The magnitude of th... | 02/24/1998 |
| 5644195 | Flat panel display drive circuit with switched drive current A Field Emission Display ("FED") is disclosed having a brightness to project images. To achieve this benefit, the FED comprises a pixelator is coupled to a display for displaying and projecting the image. By design, the pixelator conducts a current, corre... | 07/01/1997 |
| 5581159 | Back-to-back diode current regulator for field emission display A circuit for regulating the pixel current in a field emission display so as to enhance pixel-to-pixel uniformity of pixel current. The pixel current flows through a pair of diodes connected back-to-back. A transistor circuit controls the voltage across t... | 12/03/1996 |
| 5576986 | Memory device using micro vacuum tube A highly reliable memory device with excellent heat resistance that can be used in any environment utilizes a chemical change to define a state transition. The memory device includes a micro vacuum tube structure having a recess portion formed on an upper... | 11/19/1996 |
| 5561353 | Cathode pulse modulation of RF transmitter tubes Beam control pulse modulation in an RF transmitter tube is provided by a solid state switch connected between the cathode power supply and the cathode of the transmitter tube. The beam controlling element is returned to the normal cathode power source suc... | 10/01/1996 |
| 5525868 | Display with switched drive current A Field Emission Display ("FED") is disclosed having a brightness to project images. To achieve this benefit, the FED includes a pixelator is coupled to a display for displaying and projecting the image. By design, the pixelator conducts a drive current p... | 06/11/1996 |
| 5502354 | Direct current energized pulse generator utilizing autogenous cyclical pulsed abnormal glow discharges A cold cathode vacuum discharge tube is used in a circuit for generating pulsed autoelectronic emissions which are particularly intense and frequent in the abnormal glow discharge region, and involve much lower current densities than predicted by the Fowl... | 03/26/1996 |
| 5465030 | Trigger apparatus for spark gap dischargers An improved means for triggering high voltage spark gap devices for current injection and pulse power applications which utilizes the high voltage source itself to trigger the discharge. A switch initially directs current flow from the high voltage source... | 11/07/1995 |
| 5459480 | Architecture for isolating display grid sections in a field emission display The present invention teaches a field emission display ("FED") architecture for isolating display grids, wherein an FED has a plurality of pixels. Each of the pixels comprise at least two field emitter tips for displaying information to the pixel and a pi... | 10/17/1995 |
| 5444337 | Radio frequency amplifying apparatus A radio frequency amplifying apparatus including a radio frequency amplifying circuit operative in response to a signal of high frequency wave generated from a source generator includes a switching circuit operatively connected to the source generator and... | 08/22/1995 |
| 5404081 | Field emission device with switch and current source in the emitter circuit An integrally formed field emission device and electron emission control circuit wherein electron emission is controlled by a current source semiconductor circuit and a semiconductor switch coupled such that upon application of switching information to th... | 04/04/1995 |
| 5396151 | Circuit for reducing ELF electric fields radiated from CRT devices A circuit for reducing extremely low frequency (ELF) electric fields on cathode ray robe (CRT) devices comprises a power supply means, a CRT, a voltage sensing means, an amplification means, and a capacitive coupling within a feedback path to the CRT. A C... | 03/07/1995 |
| 5387844 | Flat panel display drive circuit with switched drive current A Field Emission Display ("FED") is disclosed having a brightness to project images. To achieve this benefit, the FED includes a pixelator which coupled to a display for displaying and projecting the image. By design, the pixelator conducts a drive curren... | 02/07/1995 |
| 5357172 | Current-regulated field emission cathodes for use in a flat panel display in which low-voltage row and column address signals control a much higher pixel activation voltage In a flat panel display in which low-voltage row and column address signals control a much higher pixel activation voltage by respectively gating at least one pair of series coupled MOSFETs to ground for each pixel, effective current regulation is achieve... | 10/18/1994 |
| 5343081 | Synapse circuit which utilizes ballistic electron beams in two-dimensional electron gas According to the present invention, there is provided a semiconductor synapse circuit comprising a semiconductor having an electrically charged carrier gas which is provided with a plurality of electrically isolated input channels providing narrowed areas... | 08/30/1994 |
| 5340997 | Electrostatically shielded field emission microelectronic device A field emission microelectronic device based on field emitter structures and fabrication processes. In one embodiment, the microelectronic device includes an electron source, a collector adjacent to the source, and an isolator. The source and the collect... | 08/23/1994 |
| 5332952 | Quantum phase interference transistor Disclosed is hererin a quantum phase interference transistor comprising: an emitter for emitting electron waves into a vacuum; a gate electrode for controlling the phase difference between a plurality of electron waves; and a collector for collecting the ... | 07/26/1994 |
| 5289086 | Electron device employing a diamond film electron source An electron device including a diamond material electron emitter and an anode, both disposed on a supporting substrate, so as to define an interelectrode region therebetween. Electron transport across the interelectrode region is initiated at an emitting ... | 02/22/1994 |
| 5283500 | Flat panel field emission display apparatus The disclosed flat panel field emitter display (FPFED) comprises a first impedance that carries all of the current to all of the micropoint emitters of one or more (preferably one, typically fewer than about five, always fewer than all the pixels of a giv... | 02/01/1994 |
| 5278475 | Cathodoluminescent display apparatus and method for realization using diamond crystallites Cathodoluminescent display apparatus employing an electron source including a plurality of diamond crystallites. Image display apparatus employing an array of picture elements, each picture element having associated therewith an electron source including ... | 01/11/1994 |
| 5225743 | High voltage switch A switch includes a housing forming a cavity, a first electrode, and a second electrode. The first electrode has an inner surface having a generally circular cross-section perpendicular to an axis and extending along the cavity in a first direction along ... | 07/06/1993 |
| 5210472 | Flat panel display in which low-voltage row and column address signals control a much pixel activation voltage A flat panel display in which low-voltage row and column address signals control a much higher pixel activation voltage. Although the invention was created with field-emission displays in mind, the technique may be used in any matrix-addressable display (... | 05/11/1993 |
| 5206565 | High-power low-voltage tetrode having a full walled matrix cathode and a control grid spacing of less than 1 mm In a controllable high-power electron tube in the form of a tetrode, the anode direct voltage is reduced to less than 10 kV with an anode efficiency of greater than 80%. The tube includes coaxially arranged electrodes including a cylindrical indirectly he... | 04/27/1993 |
| 5204588 | Quantum phase interference transistor Disclosed is hererin a quantum phase interference transistor comprising: an emitter for emitting electron waves into a vacuum; a gate electrode for controlling the phase difference between a plurality of electron waves; and a collector for collecting the ... | 04/20/1993 |
