摘要:
A self-registered diode array camera tube target is formed utilizing a refractory metal grid as a mask both during etching of the insulating layer protecting the semiconductive substrate from electron beam irradiation and during diffusion of the monolithic diode array into the substrate. The refractory metal grid thus completely overlies the insulating layer between adjacent diodes of the target and, upon the application of a suitable electrical bias to the grid, the landing characteristics of the electron beam upon the target is controlled to inhibit charging of the insulating layer by the scanning beam. A dual grid camera tube target also is disclosed wherein the outermost grid controls the electron beam landing profile while a more positively biased inner grid remote from the electron beam negates the generation of conductivity producing charge carriers at the substrate-insulating layer interface.
摘要:
1,137,046. Adhesives based on carboxylated rubber. PITTSBURGH PLATE GLASS CO. 12 Sept., 1967 [13 Sept., 1966 (3)], No. 41585/67. Heading C3P. An adhesive composition comprises:- (1) 100 parts by weight of one or more rubbery diene addition polymers having an average molecular weight of at least 30,000 and containing a total of 0À00025-0À12 carboxyl equivalents/100 grams; (2) From 0À1-80 parts by weight of a metal of Group IA, IIA, IIB or IVA of the Periodic Table in the form of an organic solvent-soluble metalorganic resin; and (3) 50-450 parts by weight of an organic solvent-soluble resin compatible with (1). Ingredient (1) is preferably a carboxylated polybutadiene or butadiene-styrene copolymer. The rubber may also be a mixture of carboxylated and non-carboxylated polymers. The resin (2) may be an oil-soluble heat-hardenable phenol-formaldehyde resin or a rosin acid and the metal may be lithium, sodium, magnesium, calcium, barium, zinc or lead. Resin (3) is suitably a poly-#-pinene or an ethylene glycol ester of polymerized rosin. The compositions may contain filler and a small amount of solvent for use as mastics or dissolved in solvents for brushing and spraying. Ingredients (1) and (2) may be reacted together by masticating at high temperatures. Additionally part or all of resin (3) can be constituted by " excess " resin (2)
摘要:
1,137,046. Adhesives based on carboxylated rubber. PITTSBURGH PLATE GLASS CO. 12 Sept., 1967 [13 Sept., 1966 (3)], No. 41585/67. Heading C3P. An adhesive composition comprises:- (1) 100 parts by weight of one or more rubbery diene addition polymers having an average molecular weight of at least 30,000 and containing a total of 0À00025-0À12 carboxyl equivalents/100 grams; (2) From 0À1-80 parts by weight of a metal of Group IA, IIA, IIB or IVA of the Periodic Table in the form of an organic solvent-soluble metalorganic resin; and (3) 50-450 parts by weight of an organic solvent-soluble resin compatible with (1). Ingredient (1) is preferably a carboxylated polybutadiene or butadiene-styrene copolymer. The rubber may also be a mixture of carboxylated and non-carboxylated polymers. The resin (2) may be an oil-soluble heat-hardenable phenol-formaldehyde resin or a rosin acid and the metal may be lithium, sodium, magnesium, calcium, barium, zinc or lead. Resin (3) is suitably a poly-#-pinene or an ethylene glycol ester of polymerized rosin. The compositions may contain filler and a small amount of solvent for use as mastics or dissolved in solvents for brushing and spraying. Ingredients (1) and (2) may be reacted together by masticating at high temperatures. Additionally part or all of resin (3) can be constituted by " excess " resin (2)
摘要:
A sensor 20 is formed on semiconductor substrate 22. Dielectric layers 23 and 24 are formed on the face and backside of substrate 22, respectively. Metal leads 26 and 28 contact the substrate through openings in the dielectric layer 23. The leads 26 and 28 are also connected to the set of interleaved longitudinal contact fingers 27 and 29. Additionally, a pair of backside contacts 30 and 32 are formed on the dielectric layer 24. The backside contact 30 is in contact only with the metal lead 26 through a conductive region 34.
摘要:
A METHOD FOR IMPROVING THE CRYSTALLINE PERFECTION OF EPITAXIAL FILMS OF GERMANIUM IS SET FORTH, WHICH IS PARTICULARLY APPLICABLE TO FORMING A DEVICE-QUALITY LAYER ON A FOEIGN SUBSTRATE. IN THIS LATTER ENVIRONMENT, THE PROCESS IS CARRIED OUT BY VAPOR DEPOSITING ON THE FOREIGN SUBSTRATE A GERMANIUM SINGLE CRYSTAL BASE FILM AT TEMPERATURES IN THE RANGE OF 800*C. TO 825*C., EPITAXIALLY VAPOR DEPOSITING A BUFFER GERMANIUM LAYER ON SAID BASE FILM AT TEMPERATURES IN THE RANGE 340*C TO 360*., AND THEREAFTER EPITAXIALY DEPOSITING A LAYER OF GERMANIUM AT A HIGHER TEMPERATURE RANGE OF 700*C. AND ABOVE.
摘要:
An isothermal process for preparing epitaxial layers of Hg1 xCdxTe in an excess mercury vapor environment. In a preferred embodiment the process provides layers having a predetermined x value within the Hg1 xCdxTe alloy system by the selection of a predetermined mercury vapor pressure during processing.