Metal working – Method of mechanical manufacture – Assembling or joining
Patent
1983-07-14
1985-10-08
Weisstuch, Aaron
Metal working
Method of mechanical manufacture
Assembling or joining
29576B, 29578, 29580, 29585, 29591, 148 15, 365113, 365163, 357 2, H01L 2146
Patent
active
045451117
ABSTRACT:
A method of making a parallel programmed electronic matrix array including the steps of forming at least one layer of a phase changeable material on a conductive substrate, wherein the phase changeable material has a substantially nonconductive state and a comparatively high conductive state. The layer is formed in one of the states. The method also includes irradiating selected areas of the layer to simultaneously convert the selected areas of the layer to the other one of the states to form selected substantially nonconductive layer portions and selected comparatively high conductive layer portions. Thereafter, in a preprogrammed embodiment, first and second sets of electrically conductive address lines are formed on respective opposite sides of the layer. The address lines of the first and second sets are formed for crossing at an angle to form a plurality of crossover points with the selected substantially nonconductive layer portions and the selected comparatively high conductive layer portions therebetween. In a field programmable array, the areas are irradiatd through one set of lines.
REFERENCES:
patent: 3599181 (1971-08-01), Dearnaley
patent: 3641510 (1972-02-01), Chen
patent: 3696344 (1972-10-01), Feinleib et al.
patent: 4339285 (1982-07-01), Pankove
patent: 4366614 (1983-01-01), Kumurdjian
Energy Conversion Devices Inc.
Norris Lawrence G.
Weisstuch Aaron
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