Electroluminescent display devices

One of the most recent fields of electron device development has been in the use of the phenomena of electroluminescence and photo-conduction to produce devices of many kinds which find application in varied ways in the electronic industry. It is the purpose of this paper to show several of these devices which are being produced today in order to acquaint the electronic design engineers with their availability and their design characteristics. This field can be arbitrarily divided into several separate types of devices. This is typified as follows: 1. Readout devices 2. Electroluminescent-photoconductor circuit elements 3. Crossed grids 4. Bistable panels 5. Special devices for photographic application Currently, numerics and alpha-numerics are available in sizes from inch to 4 inches utilizing the ceramic type electroluminescent lamp as a base. These can be furnished as single or multiple units and with printed board type or plug-in base connectors.