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4031272 |
Hybrid integrated circuit including thick film resistors and thin film conductors and technique for fabrication thereof
A technique for the fabrication of hybrid integrated circuitry combining the expedients of thick and thin film technology is described. A novel processing sequence for attaining ohmic contact...
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4021277 |
Method of forming thin film resistor
A process is disclosed for vacuum depositing by co-sputtering a thin film nickel-chromium resistor of metastable composition. Also disclosed is a resistor made by this process, which resistor...
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4016645 |
Electric heater plate and terminal thereof
An electric heater plate is disclosed comprising a sheet of tempered glass with a metallized aluminum circuit extending over the face thereof for carrying an electrical heating current. At the...
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4001757 |
Method for detecting a reducing material in a gas phase
A method for detecting the presence of a reducing material in a gas phase which involves heating a gas sensor, which has, as a major part, a partially dehydrated iron hydroxide having electrodes...
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3998980 |
Fabrication of thick film resistors
A glass material is deposited upon a ceramic substrate and then fired at an elevated temperature in air. Screen printed resistor elements formed on the glass material are fired, lapped, and annealed.
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3996551 |
Chromium-silicon oxide thin film resistors
An arrangement of thin film resistive layers for hybrid microcircuits that liminates electrical contact problems and provides a means for obtaining high precision by trimming. A thin resistive film...
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3988824 |
Method for manufacturing thin film circuits
A thin film capacitor and resistor is disclosed, each capacitor being formed by a structure including a metallic film on an insulating substrate, the metallic film having an oxidized surface formed...
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3955068 |
Flexible conductor-resistor composite
A composite comprising a flexible substrate structure including a base and support members projecting therefrom; a network of resistor segments; a conductor network interposed between the resistor...
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3947801 |
Laser-trimmed resistor
A laser-trimmed film resistor wherein the laser kerf terminates in an area outside the electrical current path across the resistor. FIELD OF THE INVENTION This invention relates to film...
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3938069 |
Metal oxide varistor with passivating coating
A metal oxide varistor comprising a body portion that is composed essentially of a metal oxide and a small percentage of a plurality of preselected additives. A passivating coating is applied to...
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3916144 |
Method for adjusting resistors by lasers
A method for adjusting the resistance of cylindrical layer resistors comprising utilization of a laser beam. The resistor is rotated about its longitudinal axis at a predetermined rotational speed....
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3905097 |
Method of making plural potentiometer body
A plural potentiometer in which independently and infinitely variable potentiometers are included in a common housing where for each potentiometer a resistive strip is applied to the inside of the...
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3904461 |
Method of manufacturing solderable thin film microcircuit with stabilized resistive films
A metalization process for the manufacture of hybrid integrated circuit elements including boards and semiconductors to be attached thereto involves applying to a substrate of insulating material...
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3898607 |
High value vertical resistors by ion implantation and method for making same
A vertical resistor is described comprising aluminum, a high atomic number metal such as tungsten and implanted oxygen ions to adjust the resistivity of the aluminum to the desired level of...
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3890698 |
Field shaping layer for high voltage semiconductors
There is disclosed a resistive film having inhomogeneous properties overlaying the passivation layer normally used between the central metal overlay and a guard ring structure of a high power...
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3890703 |
Method of making humidity sensor
The operation of relative humidity sensors made from cobalt oxide on a non-conductive ceramic substrate is improved by heating the sensor for a short period to a high temperature in a reducing...
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3889223 |
Resistor trimming technique
A printed circuit resistor pattern, designed to be trimmed by electro-erosion, has affixed to the side thereof a highly conductive strip. The current path passes through a portion of the resistor...
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3883947 |
METHOD OF MAKING A THIN FILM ELECTRONIC CIRCUIT UNIT
An insulating substrate is first coated with a film of tantalum. Then either a layer of copper or two layers of copper separated by a diffusion barrier layer of iron, nickel or cobalt are applied...
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3880609 |
Method and apparatus for manufacturing cylindrical resistors by thick-film silk-screening
A "silk-screen" is provided with a patterned pervious portion the dimension of which, in the direction of screen movement, is substantially less than the circumference of the cylindrical substrate....
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3881162 |
Film-type cylindrical resistor and method of manufacturing
A low-inductance cylindrical resistor formed of a cylindrical ceramic substrate, which is coated with a film of resistive material and overprinted with intermeshing comb termination films. End caps...
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3867757 |
Method of fabrication of a photon sensor
A photon sensitive film resistor is provided having a resistance measured megohms per centimeter. The method of fabrication insures that the resistance is uniformly distributed along the current path.
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3864825 |
Method of making thin-film microelectronic resistors
The present disclosure relates to a number of layers of resistive materials superimposed upon an area of the substrate, the material of highest resistivity being deposited first, and therefore at...
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3865742 |
Resistor Compositions
A printed microelectronic resistor having excellent stability, high reproducibility and a TCR less than about ±500 ppm/°C (25°-150°C) is formed from a composition comprised of a glass binder...
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3857174 |
METHOD OF MAKING VARISTOR WITH PASSIVATING COATING
Disclosed is a metal oxide varistor comprising a body portion that is composed essentially of a metal oxide and a small percentage of a plurality of preselected additives. A passivating coating is...
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3851291 |
THIN FILM THERMISTOR
A thin film thermistor and a method of making such a thermistor in which a composition of lead teluride plus 5 percent cerium is sputtered on to a polymide film after which electrodes are deposited...
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3851293 |
ELECTRICAL RESISTANCE ELEMENT AND METHOD OF MANUFACTURE
A conductive plastic potentiometer with an electrical resistance element having two end terminations and comprising two resistance films applied on a single substrate. The two films are applied...
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3842495 |
CONTROL OF RATE OF CHANGE OF RESISTANCE AS A FUNCTION OF TEMPERATURE IN MANUFACTURE OF RESISTANCE ELEMENTS
The method of improving the properties of a film type electrical resistance element having a characteristic rate of change of resistance as a function of temperature change, within a selected...
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3833410 |
HIGH STABILITY THIN FILM ALLOY RESISTORS
High stability thin film alloy resistors can be made from a constant conductivity alloy comprising a predominant amount of platinum, rhodium, iridium, palladium, gold, or silver and a minor amount...
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3827142 |
TUNING OF ENCAPSULATED PRECISION RESISTOR
A long wave laser beam is controllably passed through a glassy envelope encapsulating an electrical resistor, to alter its resistance to a precision value.
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3821845 |
METHOD OF MAKING A LINEAR FILM POTENTIOMETER HAVING A CIRCULAR CONFIGURATION
Extreme linearity of a film potentiometer is instantaneously obtained by a computerized sectioning method. A circular film potentiometer track is sectioned off for the purposes of trimming the...
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3818413 |
FILM RESISTOR AND METHOD OF MAKING
Method and apparatus for producing resistors which comprise forming islands of conductive material on a very high ohmic supporting base between a pair of electrodes such that the impedance of the...
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3813519 |
ELECTRICALLY HEATED GLASS WINDOW
An electrically heated glass window comprised of a sheet of glass plate has a one-piece electric heating grid attached to the plate glass by being fused thereto. The heating grid includes an array...
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3808574 |
MAGNESIUM AND MAGNESIUM OXIDE RESISTOR AND METHOD OF FORMING
An insulated electrical resistor comprising a glass tube having a conductive cermet layer on the inner surface thereof. A conductive lead wire is sealed to each end of the tube, the end of each...
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3803708 |
METHOD FOR MAKING A RESISTOR
This disclosure provides a method for making a resistor comprising at least one resistor film and electrode films adhered to the inside surface of a hollow substrate such as one having a...
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3805210 |
INTEGRATED CIRCUIT RESISTOR AND A METHOD FOR THE MANUFACTURE THEREOF
The present invention relates to a method of manufacturing resistors integrated over a substrate made of a dielectric material.
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3793717 |
METHOD OF CONTROLLING RESISTANCE VALUES OF THICK-FILM RESISTORS
In the manufacturing of a series of Cermet thick-film resistors deposited on insulating substrates wherein the wet-printed resistor composition units are dried and then passed through a furnace on...
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3787965 |
METHOD OF MAKING RESISTOR
A method of manufacturing a precision resistor element of a predetermined resistance value, the resistor element including a quantity of resistive material extending between two terminals...
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3786557 |
FABRICATION OF THIN FILM RESISTORS
A method of fabricating thin film resistors is disclosed including the step of trimming the resistors to their final values by heating a resistance layer from which all the resistors are formed for...
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3786224 |
METHOD FOR PRODUCING STRIPS OF INSULATING MATERIAL HAVING ELECTRICALLY CONDUCTIVE COATINGS WITH A COATING FREE MARGINAL EDGE SURFACE
The present invention is directed to a method and device for removing a coating such as a metalized coating from a coated surface of a strip of insulative material by utilizing a laser beam which...
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3772496 |
METHODS OF FORMING A CONDUCTIVE PATH USING AN OXYGEN PLASMA TO REDUCE REFLECTIVITY PRIOR TO LASER MACHINING
A layer of a conductive material, such as copper, is applied onto a dielectric surface. The structure is thereafter treated to render selected portions non-conductive by removal of the conductive...
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3771095 |
MONOLITHIC INTEGRATED CIRCUIT RESISTOR DESIGN FOR OPTIMUM RESISTOR TRACKING
An integrated circuit including integrated circuit resistors whose geometries are designed in accordance with the method of significant weights in order to optimize resistor tracking relative to...
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3768157 |
PROCESS OF MANUFACTURE OF SEMICONDUCTOR PRODUCT
This invention relates to a process of resistor adjustment and to a semiconductor microelectronic device package, wherein a window cap or other optically transparent access means is provided in a...
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3765940 |
VACUUM EVAPORATED THIN FILM RESISTORS
A thin film resistor is fabricated by coevaporating or codepositing semiconductor material selected from Group IV of the Periodic Table such as, for example, silicon and germanium and a doping...
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3758745 |
SUBSTRATE POSITIONED DETERMINATION STRUCTURE AND METHOD
A resistive strip adherently deposited on a substrate is progressively cut by a laser beam while the resistance of the strip is monitored. As the last edge becomes cut, the resistance approaches...
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3754987 |
METHOD OF PRODUCING AREAS OF RELATIVELY HIGH ELECTRICAL RESISTIVITY IN DIELECTRIC SUBSTRATES
Areas of relatively high electrical resistivity in a dielectric substrate, such as doped barium titanate, may be produced by first forming a relatively porous substrate which may be handled without...
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3737624 |
ELECTRIC GRILL WITH A THIN-FILM HEATING ELEMENT
A metallic thin film resistance heating element comprises an electrically and thermally insulating substratum, a thin film resistor deposited in a plurality of sprayed layers superposed upon the...
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3725836 |
THICK FILM VARISTOR AND METHOD FOR MAKING THE SAME
A thick film varistor having a thick film of finely divided particles of zinc oxide dispersed in a glass frit which bonds the particles together. Electrodes are provided on the thick film. The...
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3722085 |
METHOD OF MAKING FILM-TYPE POWER RESISTORS
A film-type power resistor consists of a ceramic wafer or washer having a central opening, one side of such washer being printed at its outer and inner edges with generally annular traces of...
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3699650 |
CO-FIRING PROCESS FOR MAKING A RESISTOR
A resistor element and a process for manufacturing it including the steps of applying resistor material to a substrate; baking and drying the resistor material at approximately 125° centigrade;...
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3699649 |
METHOD OF AND APPARATUS FOR REGULATING THE RESISTANCE OF FILM RESISTORS
Method and apparatus for automatically trimming film resistors in production quantities. The method includes the steps of placing a substrate with a film resistance to be trimmed on a support...
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