Process for the production of a substrate for an electrically controlled device and display screen produced from such a substrate
US4643527A · kind A · utility
14Cited by
1References
5Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 20, 1984 |
| Grant date | Feb 17, 1987 |
| Priority date | — |
| Expiry date | Aug 20, 2004 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S359/90
- WIPO fieldSemiconductors
- WIPO sectorElectrical engineering
Abstract
The invention relates to a process for the production of a substrate for an electrically controlled device such as a display screen, said substrate integrating non-linear elements and control elements of the elementary display points. The invention relates to the production of a substrate, in its active part, has non-linear elements associated with each image element and produced from amorphous silicon and, in its peripheral part, polycrystalline silicon controlled elements. Initially the substrate has amorphous silicon layers, the peripheral crystallization being obtained by annealing in a temperature gradient furnace.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.