Abstract:
An apparatus for testing semiconductor devices including probe tips (122) for contacting input/output pads (102) on the device attached to a probe membrane (120) fixed to a package using a layer of elastomeric material (113). The elastomeric material and use of compliant bump probe tips (122) effect a global planarization for improved electrical contact between the probe assembly and the input/output contacts (102) on the device under test.
Abstract:
A system and method for producing uniform energy dissipation in display pixels (290, 292) with widely varying electrical characteristics in order to equalize light output and improve yield within a matrix addressable display panel (192). The present invention is implemented within a driver circuit utilizing the concept of current integration. A reference voltage, which is proportional to the most efficient pixel within the display is compared to the energy dissipated within a particular pixel during illumination of that pixel. A current mirror circuit (303) supplies a current equivalent to the current provided to the object pixel to an integrator circuit resulting in a rising voltage within the integrator circuit. The rising voltage is proportional to the energy being dissipated within the current pixel. Once the rising voltage is equal to or greater than the reference voltage, current is removed from the object pixel.
Abstract:
A backlight (110) for a color liquid crystal display (28) uses various techniques for activating colored phosphors (310) which emit colored light to each one of several sub-pixels (12-18) within a particular liquid crystal display pixel. Activation of the colored phosphors (310) may be performed using field emission devices, both diode and triode, a fluorescent lamp, or a high-intensity glow discharge lamp.
Abstract:
A solid state laser is provided having as the laser medium diamond and an optically active dopant element which is found to lase in the solid matrix. The dopant is preferably titanium, vanadium, chromium, iron, cobalt, nickel, zinc, zirconium, niobium, cadmium, hafnium, tantalum, tungsten, rhenium, osmium, iridium, platinum, gold, mercury, cerium, praseodymium, neodymium, promethium, samarium, europium, gadolinium, terbium, dysprosium, holmium, erbium, thulium, ytterbium and uranium. Erbium is especially preferred. The laser medium is formed as dopants are added by ion implantation to a diamond crystal as the diamond is grown by chemical vapor deposition.
Abstract:
A cathode assembly includes a substrate, a plurality of electrically conducting strips deposited on the substrate, and a continuous layer of diamond material deposited over the plurality of electrically conducting strips and portions of the substrate exposed between the plurality of electrically conducting strips.
Abstract:
A backlight (110) for a color liquid crystal display (28) uses various techniques for activating colored phosphors (310), which emit colored light to each one of several sub-pixels (12-18) within a particular liquid crystal display pixel. Activation of the colored (310) phosphors may be performed using field emission devices, both diode and triode, a fluorescent lamp, thin film electroluminescent light, an ultraviolet lamp, a thermionic emitter, or a high-intensity glow discharge lamp. LCD panels are manufactured using less than four glass substrates.
Abstract:
The present invention provides for a field emission device including an anode assembly (600) and a cathode assembly, wherein the cthode assembly further includes a substrate (1101), a plurality of electrically conducting strips (1102) deposited on the substrate (1101), and a continuous layer of diamond material (1801) deposited over the plurality of electrically conducting strips (1102) and portions of the substrate exposed between the plurality of electrically conducting strips (1102). The field emission device may further include a grid assembly (2000) including a perforated silicon substrate (2003), a first dielectric layer (2002) deposited on the silicon substrate (2003), and a first conducting layer (2001) deposited on the first dielectric layer (2002), wherein the first dielectric layer (2002) and the first conducting layer (2001) have perforations coinciding with perforations of the silicon substrate (2003). The grid assembly may further include a second dielectric layer deposited on an underside of the silicon substrate.
Abstract:
A mirror for reflection of high-power laser energy is provided. A coating to protect the mirror from physical or chemical damage is applied, the coating being diamond-like carbon. The mirror may be made of copper and may be parabolic to concentrate the energy from the laser.