Image-forming apparatus and method of manufacturing same

摘要

An image-forming apparatus (47) comprises a sealed envelope (41-43) containing an electron-emitting device (34) having a carbonaceous film (6) which contains carbon or a carbon compound as principal ingredient. An organic substance, selected from methane, ethylene or acetylene, exists in the envelope at a partial pressure greater than 1x10<-6>Pa in an ambient of total pressure lower than 1x10<-3> Pa. The apparatus also includes means of applying a pulse voltage to the electron-emitting device at an interval greater than 4.35x10<-10> sec. <IMAGE>