| 摘要 |
<p>An electron emission display device is capable of focusing electrons emitted from an electron emission region by using small gate holes formed on a thick insulating layer. The electron emission device includes a substrate, a cathode electrode formed on the substrate, a insulating layer formed on the cathode electrode, a gate electrode formed on the insulating layer, and the electron emission region formed on the cathode electrode. In the electron emission device, the insulating layer is provided with a first insulating layer and at least one second insulating layer formed partly on the first insulating layer, and the gate electrode has a stepped portion along a surface of the insulating layer and an inclined portion to connect upper and lower end portions of the stepped portion. As such, with above-structured electron emission device, the inclined portion of the gate electrode formed at the periphery of the gate hole can focus the electrons emitted from the electron emission portion so that the contrast and the coloration are enhanced to realize high definition images without a separate or distinct focusing electrode (e.g., a grid electrode, a grid plate, etc.).</p> |
