An end-wall frame for an LED alphanumeric display circuit board provides full-length accurate standoffs for the display to prevent cracking and crazing of the epoxy coating of the encapsulated device, eliminates the need to apply black paint to the non-display portions of the lens, and provides a device...http://www.google.es/patents/US5923536?utm_source=gb-gplus-sharePatente US5923536 - End-wall frame for led alphanumeric display
