Manufacturing Methods and Engineering for TFT Addressed Display.
Quarterly report no. 1, 7 May-6 Aug 76,
WESTINGHOUSE ELECTRIC CORP HORSEHEADS N Y INDUSTRY AND GOVERNMENT TUBE DIV
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This is the first quarterly report on manufacturing methods and technology evaluation for the fabrication of a thin film transistor bases solid state display panel. A description is given of the theory of operation of a thin film transistor electroluminescent display and of the mechanical and electrical characteristics of the specific 256 character alphanumeric device to be manufactured under the subject contract. The anticipated performance of the display is reviewed and the fabrication techniques to be used for the TFT circuit, phosphor deposition and display packaging are discussed in detail. Work has commenced both on the fabrication of Engineering Samples and the preparation of the Pilot Manufacturing Facility for display circuit fabrication. In the Engineering Samples area a complete mask set has been assembled and circuit depositions are in progress. Some unexpected difficulties have been encountered with overheating of masks, but, despite these problems, display circuits have been built containing transistors with excellent electrical performance characteristics. Magnetic pull-up equipment has been designed and constructed. This is required to ensure good contact between mask and substrate during circuit depositions. The equipment has been tested successfully, both in the Engineering Samples system and in the Pilot Manufacturing Facility.
- Electrical and Electronic Equipment
- Solid State Physics