摘要:
An integrated LED display array wherein light is emitted and observed through a light-transmissive substrate, i.e., single crystal, which carries a plurality of optically isolated LED assemblies. Scattering of light from individual assemblies is prevented by an optically absorbing doped region which optically isolates each assembly. Light is generated at the back of the single crystal and viewed through the crystal. The LED assemblies, preferably multicolor, are directly mated to energizing electronic circuitry, e.g., a monolithic integrated circuit, via appropriate interconnections sandwiched between the two. The energizing electronic circuitry comprise an array of circuit elements which provide the energizing currents for respective ones of the LED assemblies.
摘要:
An integrated circuit, formed on a common substrate, having one portion operated from a first source of operating potential and another portion operated from a second source of operating potential. Separate wells are diffused in said substrate for the connection thereto of the different voltages and a reference potential common to the two sources of operating potential is applied to the common substrate. Transistors having a given potential applied to their source electrodes are formed in the common substrate or in a well having the same given potential connected thereto for eliminating potential differences between the source and the substrate of the transistors.
摘要:
An improved zener diode for monolithic integrated circuits includes a first diffused region of one type conductivity having two portions, one of which portions has a significantly higher maximum impurity concentration than the other portion. A second diffused region of opposite type high conductivity is disposed within both portions of the first region and is separated from each by a PN junction, the PN junction between the second region and the lower conductivity portion being at a significantly greater depth than the PN junction between the second region and the high impurity concentration portion. The electrical contact to the second region is made only over the lower impurity concentration portion where the PN junction is at a significantly greater depth.
摘要:
The method of the present invention introduces a method of forming conductively doped contacts on a supporting substrate in a semiconductor device that minimizes the lateral out-diffusion of the conductive dopants and also provides for a low resistive contact by the steps of: preparing a conductive area to accept contact formation; forming a phosphorus insitu doped polysilicon layer over the conductive area; forming an arsenic insitu doped polysilicon layer over the phosphorus insitu doped polysilicon layer, wherein the two insitu doped polysilicon layers are deposited one after another in separate deposition steps; and annealing the layers at a temperature range of approximately 900.degree.-1100.degree. C. thereby, resulting in sufficient thermal treatment to allow phosphorus atoms to break up a first interfacial silicon dioxide layer formed between the conductive area and the phosphorus insitu doped polysilicon layer.
摘要:
Gold is diffused into a silicon substrate by first depositing an ultrathin layer of gold on one of the main faces of the substrate and then by heating the substrate to a temperature range of about 300.degree.-850.degree. C., instead of to about 1000.degree. according to the prior art. Then, following the removal of the remaining gold layer from over the substrate, the latter is reheated to a higher temperature ranging from about 700.degree. C. to about 1000.degree. C. for activating the diffused gold. The gold diffusion at the reduced temperature serves to decrease the surface irregularities of the substrate as a result of gold-silicon alloy zones created at the interface between gold layer and silicon substrate during the thermal diffusion process.
摘要:
The invention relates to a method of manufacturing a Bi-CMOS semiconductor IC device in which the bipolar transistor structure contained therein has a flat PN plane junction between its base and emitter regions, said device having improved breakdown voltage characteristics.The improved method involves preparing a silicon substrate having a P-type base region formed in an N-type collector region, forming a thick silicon oxide layer over the suface of a bipolar transistor region on said substrate, selectively removing the silicon oxide layer to form a first window exposing a part of the collector region and a second window exposing a part of the base region, diffusing phosporus atoms into the base region and collector region through said first and second windows to form an emitter region in the base region and a collector contact in the collector region, subjecting the structure thus-obtained to an oxidation process in a wet oxygen atmosphere at a temperature of 940.degree. C..+-. 20.degree. C. to form a thin silicon oxide layer in the windows, whereby the thin oxide layer on the emitter region invades the emitter region to accomodate the phosphorus atoms, selectively removing a portion of the thin oxide film to form a third window, thereby exposing a surface of the emitter region and subjecting the structure thus-obtained to an impurity drive-in process to rediffuse the phosphorus atoms contained in the remaining thin oxide film into the emitter region, whereby the PN junction plane between the base and emitter regions is flattened. Other variations of this general method are disclosed.
摘要:
A method for fabricating isolated regions for a dielectric isolated complementary integrated circuit which avoids the difficulty of mask alignment and patterning on a deeply etched uneven surface of the substrate by aligning the patterns before etching and thereby forming p-type and n-type islands at the same time. A poly-silicon layer is grown on the surface of the substrate covering the islands and the substrate is removed from its back surface, leaving the islands embedded in the poly-silicon layer which becomes a new substrate.
摘要:
A semiconductor device comprised by assembling a part having a mechano-electrical converting function comprising a metalsemiconductor contact provided in parallel or substantially parallel with a junction of a semiconductor body and a part of electrical circuit comprising such elements as a transistor, diode, resistor, inductor or capacitor into the semiconductor body.
摘要:
SEMICONDUCTOR DEVICES CONTAINING TWO DIFFUSED REGIONS WITH DIFFERENT DEPTHS FORMED IN A COMMON SEMICONDUCTOR SUBSTRATE ARE MADE BY, FOR EXAMPLE, FIRST SELECTIVELY DIFFUSING GERMANIUM INTO THE SURFACE OF AN N-TYPE SILICON CRYSTALLINE SUBSTRATE AND, THEREAFTER, SELECTIVELY DIFFUSING BORON INTO THE REGION CONTAINING THEN DIFFUSED GERMANIUM AS WELL AS INTO ANOTHER SURFACE PORTION OF THE SUBSTRATE WHERE THE GERMANIUM HAS NOT BEEN DIFUSED.
摘要:
A MONOLITHIC INTEGRATED CIRCUIT A PLURALITY OF FIELD EFFECT TRANSISTORS AND BIPOLAR TRANSISTORS FORMED IN A SINGLE EPITAXIAL LAYER ON THE SAME SEMICONDUCTOR MEMBER AND A METHOD FOR DOING SO WITH DIFFUSION STEPS COMMON TO BOTH TYPES OF TRANSISTORS, ARE DESCRIBED. THE TOP GATE OF A PN JUNCTION GATED FIELD EFFECT TRANSISTOR AND THE EMITTER OF AN NPN BIPOLAR TRANSISTOR ARE FORMED SIMULTANEOUSLY, WHILE THE SOURCE AND DRAIN OF THE FIELD EFFECT TRANSISTOR AND THE BASE OF THE BIPOLAR TRANSISTOR ARE FORMED SIMULTANEOUSLY. THE CHANNEL PORTIN OF THE FIELD EFFECT TRANSISTOR IS FORMED SEPARATELY WITH A DOPING IMPURITY CONCENTRATION OF LOWER SURFACE VALUE AND LOWER SLOPE THAN ANY OF THE OTHER ELEMENTS TO PROVIDE SUCH CHANNEL WITH A HIGH RESISTANCE WHICH IT MORE UNIFORM AND EASIER TO REPRODUCE.