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Class 338/195 - Resistance value varied by removing or adding material


Subclass of Class 338 - Electrical resistors
Definition: Subject matter wherein a finished or completely manufactured
No. of patents: 300
Last issue date: 04/03/2012


1                
NumberTitleIssue Date
8149081Power-measured pulses for thermal trimming
A method for post-thermal-trimming annealing a thermally-trimmable resistor thermally-isolated on a substrate, the method comprising: trimming said thermally-trimmable resistor by applying a first power-measured signal to a heating resistor; and applying a second po...
04/03/2012
8143993Method and circuit for recycling trimmed devices
A trimmable component network of switched parallel paths is described, each path contains a component, typically a resistor, with a portion of the component bypassed by fuses. The bypassed portion represents the same percentage of the component's value for each of t...
03/27/2012
8009011Electrically adjustable resistor
An electrically adjustable resistor comprises a resistive polysilicon layer dielectrically isolated from one or more doped semiconducting layers. A tunable voltage is applied to the doped semiconducting layers, causing the resistance of the polysilicon layer to vary...
08/30/2011
7999652Thick film resistor
In a flat plate type thick film resistor, an insulation performance is improved by excluding the nonuniformity of potential distribution on a wiring plane, which is generated when electric current flows in a resistance wire. Simultaneously, generation of noise depen...
08/16/2011
7956717Power-measured pulses for thermal trimming
A circuit for trimming a thermally-trimmable resistor, measuring a temperature coefficient of resistance of the thermally-trimmable resistor, and annealing a thermally-trimmable resistor post-trimming, the circuit comprising: a thermally-isolated area on a substrate...
06/07/2011
7902958Resistor element with PTC properties and high electrical and thermal conductivity
A resistor element with a ceramic body that has PTC properties is specified. At least one main surface of the ceramic body has an arrangement of depressions. ...
03/08/2011
7872564Integrated lateral short circuit for a beneficial modification of current distribution structure for xMR magnetoresistive sensors
The invention relates to a magnetoresistive device formed to sense an externally applied magnetic field, and a related method. The magnetoresistive device includes a magnetoresistive stripe formed over an underlying, metallic layer that is patterned to produce elect...
01/18/2011
7859385Resistive elements using carbon nanotubes
Resistive elements include a patterned region of nanofabric having a predetermined area, where the nanofabric has a selected sheet resistance; and first and second electrical contacts contacting the patterned region of nanofabric and in spaced relation to each other...
12/28/2010
7843309Power resistor
A resistor includes first and second opposite terminations, a resistive element formed from a plurality of resistive element segments between the first and second opposite terminations, at least one segmenting conductive strip separating two of the resistive element...
11/30/2010
7825768Resistor circuit and oscillation circuit
A resistor circuit includes first to Mth resistor circuit units. A (2j−1)th resistor circuit unit includes a (2j−1)th first fuse element and a (2j−1)th resistor provided in series between a (2j−1)th node and a 2jth node, and a (2j−1)th second fuse element ...
11/02/2010
7804391Changing an electrical resistance of a resistor
An electrical structure. The electrical structure includes a resistor having a length L and an electrical resistance R(t) at a time t; and a laser radiation directed onto a portion of the resistor, wherein the portion of the resistor includes a fraction F of the len...
09/28/2010
7800479Semiconductor device having a trim cut and method of evaluating laser trimming thereof
A method of evaluating laser trimming of a semiconductor device having a thin film resistor is disclosed. The method includes the steps of providing the thin film resistor and laser trimming the thin film resistor by creating a first trim cut. The first trim cut bis...
09/21/2010
7782172Variable chip resistor
A variable chip resistor (1) of the present invention includes a resistor element (2) made of a metal plate which is in the form of a chip and has a predetermined specific resistance. Terminal electrodes (3, 4) for soldering are provided at both...
08/24/2010
7755467Chip resistor
The chip resistor (1) of the present invention includes a pair of terminal electrodes (4, 5) provided at ends of an insulating substrate (2) in the form of a chip, and a resistor film (3) formed on the upper surface of the insulating subs...
07/13/2010
7755468Chip resistor and manufacturing method therefor
A chip resistor includes a resistive element (1), an insulation layer (4) formed in a back surface of the flat surface, and two electrodes (3) spaced from each other via the insulation layer. Each electrode (3) makes contact with the insu...
07/13/2010
7719403Film resistor and a method for forming and trimming a film resistor
A thin film resistor (5) of an integrated circuit comprises an elongate resistive film (7) extending between electrical contact pads (10,11). A low impedance element (20) overlays and is electrically coupled to a portion of the resistive ...
05/18/2010
7663470Trimming circuit and electronic circuit
A trimming circuit and an electronic circuit that decreases the resistance of an activated transistor while reducing the number of resistors. The trimming circuit includes a plurality of series-connected units. Units for respectively changing adjusting resistances o...
02/16/2010
7633373Thin film resistor and method of forming the resistor on spaced-apart conductive pads
A thin film resistor is formed to have very accurately defined dimensions which, in turn, allow the resistive value of the resistor to be very accurately defined. The resistor is formed on spaced-apart conductive pads which, in turn, are electrically connected to co...
12/15/2009
7598841Film resistor and a method for forming and trimming a film resistor
A thin film resistor (5) of an integrated circuit comprises an elongate resistive film (7) extending between electrical contact pads (10,11). A low impedance element (20) overlays and is electrically coupled to a portion of the resistive ...
10/06/2009
7439846Resistance adjusting method and resistance adjusting element and resistance adjusting device
A resistance adjusting method, a resistance adjusting element, and a resistance adjusting device are disclosed. The method includes first, second, and third cut-off steps that leave a part having a length capable of preventing cracking of a remaining resistance film...
10/21/2008
7423513Circuit board having resistor and method for manufacturing the circuit board
A circuit board high in reliability and a method for manufacturing the circuit board are provided. The electrical resistance is accurately adjustable without damaging the circuit body even if it is made of resinous material and is free from a change over time. A cir...
09/09/2008
7408437Resistance element, its precursor, and resistance value adjusting method
An object of the invention is to provide a resistor element that makes it possible to adjust the resistance value of a precursor easily in producing a resistance element having a target resistance value from the precursor, as well as to the precursor and a related r...
08/05/2008
7378936Circuit element with laser trimmed component
A circuit element has a substrate layer with first and second faces. A conductive first layer overlays the first surface, and a conductive second layer overlays the second surface. The first layer defines a pattern with a trimmable portion. The second layer defines ...
05/27/2008
7365632Resistive elements using carbon nanotubes
Resistive elements include a patterned region of nanofabric having a predetermined area, where the nanofabric has a selected sheet resistance; and first and second electrical contacts contacting the patterned region of nanofabric and in spaced relation to each other...
04/29/2008
7361869Method for the production of an electrically conductive resistive layer and heating and/or cooling device
An electrically conductive resistive layer (26) is produced by thermally spraying an electrically conductive material (18) onto the surface of a non-conductive substrate (12). Initially, the material layer (14) arising therefrom has no de...
04/22/2008
7356716System and method for automatic calibration of a reference voltage
A system and system for automatic voltage calibration is presented. A voltage calibration system includes three main units, which are a voltage level trimming unit, a trim detection unit, and a trim control unit. The three units work in conjunction with each other d...
04/08/2008
7342480Chip resistor and method of making same
A chip resistor includes a resistor element of a rectangular solid made of an alloy composed of high-resistant metal and low-resistant metal. The resistor has connection terminal electrodes disposed at the ends of the resistor element that are spaced longitudinally ...
03/11/2008
7324258Semiconductor optical modulator integrated resistor for impedance matching using semiconductor doped layer and method of fabricating the same
Provided is a semiconductor optical modulator device in which a resistor for impedance matching is integrated in a device in order to improve performance and to reduce cost during the fabrication of an ultra high speed optical modulator module. A doped layer in an e...
01/29/2008
7319346Circuit and method for trimming integrated circuits
A programmable after-package, on-chip reference voltage trim circuit for an integrated circuit having a plurality of programmable trim cells generating a programmed sequence. A converter is provided to convert the bit sequence into a trim current. The trim current i...
01/15/2008
7307267Electric device with phase change material and parallel heater
The electric device (1, 100) has a body (2, 102) having a resistor (7, 107) comprising a phase change material being changeable between a first phase and a second phase. The resistor (7, 107) has a first electrical resistance when the pha...
12/11/2007
7305754Method of manufacturing chip resistor
In manufacturing a chip resistor by dividing a chip resistance substrate which includes an insulator, resistance film formed on a surface of the insulator, and a plurality of conductive strips disposed on the resistance film at fixed intervals, grooves are formed by...
12/11/2007
7300807Structure and method for providing precision passive elements
A circuit having a precision passive circuit element, such as a resistor or a capacitor, with a target value of an electrical parameter is fabricated on a substrate with a plurality of independent parallel-connected passive circuit elements. The plurality of passive...
11/27/2007
7301436Apparatus and method for precision trimming of integrated circuits using anti-fuse bond pads
An apparatus and method for using anti-fuse bond pads used to provide trimmed resistor values to the input terminals of circuits on an integrated circuit die. The apparatus and method comprises fabricating on a semiconductor integrated circuit a resistive network. T...
11/27/2007
7292133Resistance circuit, and voltage detection and constant voltage generating circuits incorporating such resistance circuit
A resistance circuit included in a semiconductor apparatus, which is formed of a plurality of thin film metal resistors connected in series, capable of achieving a precise resistance adjustment over a wide range by disconnecting or changing the resistors by laser be...
11/06/2007
7292022Current detection resistor, mounting structure thereof and method of measuring effective inductance
A mounting structure for current detection resistor device has a feature that voltage detection terminal wiring is configured so as to extend along a current path in the resistor body first, and then, to bend at right angles to the current path, while maintaining el...
11/06/2007
7286039Chip resistor and method of manufacturing the same
A chip resistor is provided which includes a resistor film 5 formed between a pair of terminal electrodes 2 and 3 on an upper surface of an insulating substrate 2. The resistor film is formed with two inward grooves 7, 8 and two tr...
10/23/2007
7278201Method of manufacturing a resistor
A high precision power resistor having the improved property of reduced resistance change due to power is disclosed. The resistor includes a substrate having first and second flat surfaces and having a shape and a composition; a resistive foil having a low TCR of ab...
10/09/2007
7279108Method for the manufacture of printed circuit boards with plated resistors
A process is revealed whereby resistors can be manufactured integral with a printed circuit board by plating the resistors onto the insulative substrate. Uniformization of the insulative substrate through etching and oxidation of the plated resistor are discussed as...
10/09/2007
7278202Method for making overlay surface mount resistor
A surface mount resistor includes an elongated piece of resistive material having strips of conductive material attached to its opposite ends. The strips of conductive material are separated to create an exposed central portion of the resistive material therebetween...
10/09/2007
7271699Changing an electrical resistance of a resistor
A resistor and a structure for changing an electrical resistance of a resistor. Initially, the resistor is provided, wherein the resistor has a length L and an electrical resistance R1. A portion of the resistor is exposed to a laser radiation, wherein th...
09/18/2007
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