Patent ID: 7129641

Claim:
A display device comprising: a display panel comprised of a cathode substrate and a fluorescent screen substrate, said cathode substrate including an array of thin-film type electron sources each having a lower electrode, an upper electrode and an electron accelerating layer retained between said lower electrode and said upper electrode, each of said electron sources radiating electrons from said upper electrode in response to a voltage applied between said lower electrode and said upper electrode, said fluorescent screen substrate including a fluorescent screen in which phosphors excited by said electrons to thereby emit light are formed; and a drive circuit for driving said lower electrode and said upper electrode; wherein each of said thin-film type electron sources is provided between adjacent ones of stripe-shaped upper bus electrodes at least in an image display area; wherein a film of said upper electrode formed in said image display area is connected to one of said upper bus electrodes in a corresponding pixel, and separated from other upper bus electrodes in adjacent pixels due to a step of an apprentice structure formed on one side surface of said upper bus electrode in said corresponding pixel, so that individual pixels are separated from each other.