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113 results about "Planar capacitor" patented technology

Planar capacitor memory cell and its applications

InactiveUS7209384B1Less complicated to fabricateImprove performanceTransistorSolid-state devicesHemt circuitsEngineering
A capacitor memory is realized, wherein a capacitor stores data and a diode controls to store data “1” or “0”. Diode has four terminals wherein first terminal serves as word line, second terminal serves as storage node, third terminal is floating, and fourth terminal serves as bit line, wherein back channel effect is suppressed adding additional ions in the bottom side of third terminal or applying negative voltage in the well or substrate. A capacitor plate couples to second terminal, which plate has no coupling region to first, third and fourth terminal. With no coupling, the inversion layer of plate in the storage node is isolated from the adjacent nodes. In doing so, the plate can swing ground level to positive supply level to write. As a result, no negative generator is required for controlling plate. Word line and bit line keep ground level during standby, and rise to supply level for read or write operation. In this manner, no holding current is required during standby, and operating current is dramatically reduced with no negative generator. Write has a sequence to clear the state of cell before writing to store data regardless of previous state. Refresh cycle is periodically asserted to sustain data. The present invention can be applied for destructive read, or for nondestructive read adding pull-down device to bit line. The height of cell is almost same as control circuit on the bulk or SOI wafer.
Owner:KIM JUHAN

Shielded planar capacitor

ActiveUS6903918B1Mitigate eddy current lossMinimize eddy current lossSemiconductor/solid-state device detailsFixed capacitor dielectricIsolation layerParasitic capacitance
A shielded planar capacitor structure (202) is discussed, formed within a Faraday cage (210) in an integrated circuit device (200). The capacitor structure (202) reduces parasitic capacitances within the integrated circuit device (200). The capacitor (202) comprises a capacitor stack (102) formed between a first and second metal layers (230,232) of the integrated circuit. The capacitor stack (102) has a first conductive layer formed from a third metal layer (106) disposed between the first and second metal layers (230,232) of the integrated circuit, a dielectric isolation layer (110) disposed upon the first conductive layer (106); and a second conductive layer (112) disposed upon the dielectric isolation layer (110) and overlying the first conductive layer (106). The structure (202) further has a first and second isolation layers (104,114) disposed upon opposite sides of the capacitor stack (102). The Faraday cage (210) is formed between the first and second metal layers (230,232) of the integrated circuit (200), comprising a first and second shield layers (402,414) each having a plurality of mutually electrically conductive spaced apart traces (404). The first and second isolation layers (404,414) and the capacitor stack (102,434) are sandwiched between the first and second shield layers (402,414). Conductive elements (432) are distributed around the periphery of the capacitor stack (102,434) and the first and second isolation layers (404,412). The conductive traces (424) of the first shield layer (402) are connected to the conductive traces (424) of the second shield layer (414) through the conductive elements (432).
Owner:TEXAS INSTR INC

Planar capacitive transducer

A transducer comprising at least one planar capacitor with a thin coverlayer of material selected to maximize electric field coupling between cooperating capacitor electrodes within a region external to a principal surface of the coverlayer. Preferred coverlayer materials have low values of moisture absorption, surface free energy, permittivity, dielectric dissipation, and electrical conductance. According to one embodiment of the invention, a driven shield further enhances electric field coupling over and in a region external to the principal surface. The transducer also can promote a physical change in specific adsorbates and materials and simultaneously detect and measure an effect of the induced change. Applications for the transducer of the invention include the measurement of the moisture content of grain and bulk stored commodities, humidity, a dew point temperature, the onset of condensation and rates of adsorption and desorption.
Owner:MCINTOSH ROBERT B

Soi CMOS compatible multiplanar capacitor

An isolated shallow trench isolation portion is formed in a top semiconductor portion of a semiconductor-on-insulator substrate along with a shallow trench isolation structure. A trench in the shape of a ring is formed around a doped top semiconductor portion and filled with a conductive material such as doped polysilicon. The isolated shallow trench isolation portion and the portion of a buried insulator layer bounded by a ring of the conductive material are etched to form a cavity. A capacitor dielectric is formed on exposed semiconductor surfaces within the cavity and above the doped top semiconductor portion. A conductive material portion formed in the trench and above the doped top semiconductor portion constitutes an inner electrode of a capacitor, while the ring of the conductive material, the doped top semiconductor portion, and a portion of a handle substrate abutting the capacitor dielectric constitute a second electrode.
Owner:TWITTER INC

System for testing and burning in of integrated circuits

A system for testing integrated circuits is described. A contactor board of the system has pins with ends that contact terminals on a power and signal distribution board. Opposing ends of the pins make contact with die terminals on an unsingulated wafer. The distribution board also carries a plurality of capacitors, at least one capacitor corresponding to every die on the unsingulated wafer. Each capacitor may include two substantially flat planar capacitor conductors and a dielectric layer between the capacitor conductors. Alternatively, the capacitors may be discrete components mounted to and standing above the distribution board, in which case corresponding capacitor openings are formed in the contactor substrate to accommodate the capacitors when the distribution board and the contactor board are brought together. A plurality of fuses made of a polymer material are also provided. The polymer material limits the flow of current flowing therethrough when the temperature of a fuse increases, and increases the current therethrough when the temperature of the fuse decreases.
Owner:AEHR TEST SYST

Stacked planar capacitors with scaled EOT

Stacked planar capacitor structures and methods of fabricating the same generally include stacking two or more capacitors with three electrodes by sharing a middle electrode, wherein each capacitor has a different area. The stacked structure does not include step heights, which permits fabrication of multiple structures where desired.
Owner:IBM CORP

Printed circuit board and manufacturing method thereof

A printed circuit board which is thin and incorporates a large-capacitance capacitor function and a manufacturing method thereof. In one embodiment, the printed circuit board manufacturing method includes forming inner layer conductor circuits on a core substrate; forming a recess part on the core substrate; housing, in a recess part, a planar capacitor device that is not resin molded and has electrodes on the surfaces on a shared side; interposing the same between insulator resin and conductor metal foil to heat pressurize the same for forming a multi-layer plate; forming via holes for electrically connecting an outer layer conductor circuit to the electrodes of the capacitor device; forming a conductor layer on them; and forming the outer layer conductor circuits on the surfaces of the multi-layer plate.
Owner:TOKIN CORP

Compositions with polymers for advanced materials

A composition comprising: a polymer with a glass transition temperature greater than 250° C. and a water absorption of 2% or less; one or more metals or metal compounds; and an organic solvent. The polymer can optionally include sites that can crosslink with one or more crosslinking agents. The compositions can be used to produce electronic components such as resistors, discrete or planar capacitors, conductive adhesives and electrical and thermal conductors. The invention is also directed to a composition comprising a polymer with a glass transition temperature greater than 250° C. and a water absorption of 2% or less, and an organic solvent. These compositions can also be used in a number of electronic applications such as an encapsulant and as an integrated circuit packaging material.
Owner:EI DU PONT DE NEMOURS & CO
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