Method for making, parallel preprogramming or field programming of electronic matrix arrays
US4597162A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Oct 7, 1985 |
| Grant date | Jul 1, 1986 |
| Priority date | — |
| Expiry date | Oct 7, 2005 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH10N70/8828
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 irradiated through one set of lines.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.