摘要:
In a method of manufacturing a target structure for use in a photoconductive image pickup tube when depositing a P-type photoconductive film on an N-type transparent conductive film deposited on one side of a transparent substrate which acts as an incident window of the image pickup tube, the P-type photoconductive film is made up of first and second photoconductive substances. The commencement of the deposition of the first photoconductive substance is delayed a predetermined time than that of the second photoconductive substance and the deposition of the first photoconductive substance is terminated before completion of the deposition of the second photoconductive material thereby forming a layer of the first photoconductive substance not contiguous to the junction between the N-type transparent conductive film and the P-type photoconductive film and having a predetermined thickness.
摘要:
A semiconductor structure having a surface insulating layer formed as a grid with charges implanted in the insulating material to prevent inversion and, hence, channeling between adjacent semiconductor regions, preferably for use in nonblooming vidicon. The method of manufacturing such a structure uses ion implantation to create immobile positive charges in a grid pattern in an insulating layer in regions spaced from the interface between the insulating layer and the semiconductor body. The insulating layer is of sufficient thickness that substantially all of the charge sites in the insulating layer are separated from the outer surface of the insulator by a sufficient distance to effectively prevent a negative electric field from reaching into the silicon.
摘要:
A method of manufacturing a light sensitive heterodiode comprising an n-type transparent conductive layer and a p-type photoconductive layer provided thereon and forming rectifying contact therewith, in which before providing the p-type photoconductive layer on the n-type transparent conductive layer the surface of the latter is smoothed down by mechanical polishing or by bombarding it with ions accelerated by discharge.
摘要:
A layer of substantially uniform lead monoxide is vapor deposited on a supported signal electrode of a vidicon target. The lead monoxide layer is formed on the signal electrode as a substantially homogeneous compensated intrinsic, or n type, electrically conductive material. An electrical potential is applied to the supported layer of lead monoxide to affect an electrical discharge through a continually renewed atmosphere consisting essentially of one of the inert gases, or nitrogen, whereby ion bombardment of the layer is accomplished.
摘要:
A radiation resistance PN junction diode with a radiation shield which is attached to the semiconductor device and extends over, but is separated from, portions of the device which it is desired to have shielded from radiation. The purpose of the shield is to provide a radiation resistant semiconductor target for use in planar electron bombarded semiconductor devices, electron beam recorders, and other devices requiring periodic or continuous electron beam or other low energy radiation monitoring. In accordance with a preferred method of the invention, the electron beam shield is fabricated simultaneously on each of a plurality of PN junction diodes in an array on a semiconductor wafer.
摘要:
IN MAKING A TARGET FOR A TELEVISION CAMERA TUBE, IT IS NECESSARY TO THIN THE BACKSIDE OF A SEMICONDUCTIVE SUBSTRATE, WHICH IS OPPOSITE A FACE HAVING A DIODE ARRAY THEREON. TO THIN THE SUBSTRATE, IT IS POSITIONED FACE DOWN ON A FLLUID NONDELETERIOUS TO THE SUBSTRATE AND DIOD ARRAY. THE FLUID IS CONTAINED IN A CAVITY OF A HOLDING DEVICE. THE POSITIONING IS SUCH THAT THERE IS NO SPACE BETWEEN THE FLUID AND THE SUBSTRATE. AN APERTURED TOP MEMBER IS THEN MOUNTED ON THE SUBSTRATE AND THE HOLDING DEVICE TO RETAIN THE SUBSTRATE ON THE FLUID. THE ASSEMBLY OF THE HOLDING DEVICE AND TOP MEMBER WITH THE SUBSTRATE THEREBETWEEN IS IMMERSED AND ROATED IN AN ETCHANT TO THIN THE BBACKSIDE OF THE SUBSTRATE THROUGH THE APERTURE OF THE TOP MEMBER. THE FLUID PROVIDES A TIGHT SEAL ON THE FACE OF THE SUBSTRATE TO PREVENT THE ETCHANT FROM DAMAGING SUCH FACE AND THE DIODE ARRAYL THEREON A VENT EXTENDING FROM THE CAVITY OF THE HOLDING DEVICE TO ITS OUTER EDGE ASSIST IN THE SUBSEQUENT REMOVAL OF THE SUBSTRATE FROM THE CAVITY.
摘要:
A charge storage device of the type in which a target electrode provides a plurality of spatially distributed charge storage sites formed on an output side of semiconductor wafer with means associated with the storage sites for sensing and converting the charge on the storage sites into an electrical signal. Input excitation is directed onto the other or input side of the semiconductor wafer and may be in the form of electrons or light capable of generating electron-hole pairs within the semiconductor wafer which diffuse through to the storage sites. The output side of the semiconductor wafer is provided with an apertures insulating layer with a reading electron beam making contact through the apertures in the insulating coating to the spatially distributed storage sites within these apertures. This invention is directed to an improvement in the structure and the process for manufacture thereof wherein pillars of the semiconductive wafer extend from the substrate of the wafer above the insulating layer and a semiconductive region of opposite type conductivity to that of the wafer is provided in the top of the pillar and an electrical conductive contact is provided on the top of said pillar for better electron beam contact to the target. The invention is directed to this structure and the process of fabricating the electrical contact onto the top of the pillar. The process includes the spinning of a resist coating over the pillared surface of the target in such a manner to provide a desired resist pattern for the manufacturing process and thereby avoids other difficult masking process steps.
摘要:
A photosensitive charge storage electrode comprises a photoconductive substrate having a bulk region with a surface region of reduced conductivity. On the surface region is a selectively insulating layer of a composition such that the top of the valence band of the layer is essentially at the same energy level as the top of the valence band in the bulk region of the photoconductive substrate.
摘要:
A target using a diode array for pickup tubes which consists of a semiconductor substrate including on one surface thereof an array of regions, defining PN junctions with the major portion of the substrate formed from a vapor-deposited layer of the same conductivity type as the substrate and having a plurality of polycrystalline regions of low resistivity of conductivity type opposite to the substrate.
摘要:
The specification describes processes using ion implantation for preparing silicon diode array targets for video camera tubes. Bulk silicon prepared in the conventional way has sufficient nonuniformity over the target area to produce contrast patterns in the video output. This effect can be eliminated by initially preparing high resistivity bulk material and implanting the bulk impurities to obtain the desired bulk resistivity. Advantageous procedures for implanting the diodes are also described.