A fluorescent display apparatus performs a desired display by, in a vacuum state, irradiating its fluorescent layer with electrons discharged from electric-field electron discharge devices. The fluorescent layer is formed by a fluorescent substance and low-fusing-point glass, serves as an adhesive...http://www.google.es/patents/US5751107?utm_source=gb-gplus-sharePatente US5751107 - Field-discharge fluorescent-display with fluorescent layer including glass
Field-discharge fluorescent-display with fluorescent layer including glass ...