摘要:
The described invention is directed to microwave methods for burning-in, electrical stressing, thermal stressing and reducing rectifying junction leakage current in fully processed semiconductor chips individually and at wafer level, as well as burning in and stressing semiconductor chip packaging substrates and the combination of a semiconductor chip mounted onto a semiconductor chip packaging substrate. Microwaves burn-in devices in a substantially shorter period of time than conventional burn-in techniques and avoid the need for special workpiece holders which are required by conventional stress and burn-in techniques. Additionally, microwave methods are described for reducing the leakage current of recitfying junctions, such as PN junctions and Schottky barrier diode junctions of semiconductor devices on fully processed semiconductor chips and wafers.
摘要:
A control element positioned between an object being heated and a source of microwave radiation is employed to prevent a localized concentration of microwave energy resulting from a discontinuity in the object surface. Close control is provided for heating an object with a sensitive coating.
摘要:
Structures are described having vias with more than one electrical conductor at least one of which is a solid conductor which is formed by inserting the wire into the via in a substrate wherein the wire is attached to an electrically conductive plate which is spaced apart from the substrate by a spacer which leave a space between the substrate and plate. The space is filled with a dielectric material. The space with via between the conductor and via sidewall is filled with a dielectric material. The via is used for making transformers and inductors wherein one of the via conductors is used for inner windings and another of the via conductors is used for outer windings.
摘要:
A microwave processing system is provided wherein the material to be processed is in the form of a web type quantity configuration with a thickness that is small in relation to the wavelength of a particular microwave frequency. The material is passed through the field associated with a plurality of microwave standing waves of the particular frequency, each adjacent standing wave being offset 1/4 wavelength along the direction of movement of the web. A carrier gas removes volatile solvents from the material surfaces. Control is provided for the interrelationship of temperature, rate of movement, flow of carrier gas, and microwave power.
摘要:
A three dimensional packaging architecture for ultimate high performance computers and methods for fabricating thereof are described. The package allows very dense packaging of multiple integrated circuit chips for minimum communication distances and maximum clock speeds of the computer. The packaging structure is formed from a plurality of subassemblies. Each subassembly is formed from a substrate which has on at least one side thereof at least one integrated circuit device. Between adjacent subassemblies there is disposed a second substrate. There are electrical interconnection members to electrically interconnect contact locations on the subassembly to contact locations on the second substrate. The electrical interconnection members can be solder mounds, wire bonds and the like. The first substrate provides electrical signal intercommunication between the electronic devices and each subassembly. The second substrate provides ground and power distribution to the plurality of subassemblies. Optionally, the outer surfaces of the structure that can be disposed a cube of memory chips.
摘要:
A system for aligning two plates, in accordance with the present invention, includes a first plate having a lithographically patterned structure formed on a first surface. A second plate also has a lithographically patterned structure formed on a second surface, the first and second surfaces being disposed to face each other. The patterned structures of the plates have corresponding and opposing edges to provide an interference fit between the patterned structures of the first and second plates wherein self-alignment between the first and second plates is realized by engaging the corresponding and opposing edges in the interference fit. A method for aligning two plates includes the steps of providing the system described above, coarsely aligning the plates in a first state which includes an interference between the patterned structures, adjusting at least one of plates to provide a second state having a clearance fit between the patterned structures and moving the plates together and returning to the first state to align the plates relative to each other.
摘要:
A system and method for controlling an apparatus, in particular an apparatus for performing manufacturing operations on a work piece is described. The system uses a hierarchical series of levels of functional operations. The system has a highest level and a series of lower levels. There is a means for initiating an instruction in the highest level which results in executing of instructions in the series of lower levels until an instruction is executed to control the apparatus. A particular example consists of four levels all written as sample programming language files which are fully editable and modifiable by end users: A manufacturing operations consists of a cell or cluster of manufacturing the operations of which are controlled by the system of the invention which enables on-line tool diagnostics and simulations that can predict the effects of proposed process changes, thereby reducing the time normally required to make alterations to a process.
摘要:
The present invention relates to a whole grain preferably wheat product and a process of preparing same, said product being prepared by the steps of increasing the moisture content of the grain to about 20-45%; heating the hydrated grain at temperatures ranging between 100.degree.-130.degree. C. for 7-50 minutes; dehydrating the grain to a moisture content of about 18-30%; compressing the grains following a short tempering period; and rapidly drying the grains following compression.
摘要:
Disclosed is a tuneable microwave apparatus useful in carrying out chemical and physical processes on a sample, particularly including polymerization. The apparatus includes a cavity in which the sample is disposed, a microwave supply, microwave power meter and sensor, means for sensing the temperature in the cavity, means for varying the volume of the chamber within the cavity wherein the sample is disposed, means for measuring microwave reflection from the sample, and computer-controlled means operatively associated with the foregoing to vary the microwave power and the size of the chamber. Openings are provided within the chamber to permit removal of vapor generated during expousre of the sample to the microwave radiation.
摘要:
An integrally cast stator is formed having an annular array of vanes connected at their outer ends to an outer shroud and connected at their inner ends to an inner shroud, said outer shrouds of adjacent cast stators having a snap fit, said inner shroud having an annular C-shaped channel integrally formed within its inner surface by an inwardly extending radial flange and rearwardly extending cylindrical flange. An annular spring damping device having an outer annular arm and an inner annular arm, said damping device being positioned in said annular C-shaped channel with said inner annular arm fixed in said C-shaped channel inwardly of said inner shroud and with said outer annular arm biased against said inner surface of said inner shroud. A modification has two annular C-shaped channels.