Patent ID: 7195943
Filing Date: 2007-03-27
Classification: H01J

Abstract:
1. A process for producing a cold cathode field emission display comprising arranging a substrate having an anode electrode and a phosphor layer and a support member having a cold cathode field emission device such that the phosphor layer and the cold cathode field emission device face each other, and bonding the substrate and the support member in their circumferential portions, in which the cold cathode field emission device is forming by the steps of; (A) forming a cathode electrode on a front surface of a support member that transmits exposure light, said cathode electrode having a hole in a bottom of which the support member is exposed, being composed of a material that does not transmit exposure light and extending in a first direction, (B) forming an insulating layer on an entire surface, said insulating layer being composed of a photosensitive material that transmits exposure light, (C) forming a gate electrode on the insulating layer, said gate electrode being composed of a photosensitive material and extending in a second direction different from the first direction, (D) irradiating the support member with exposure light from a back surface side of the support member through said hole using an exposure-light-shielding member as a mask for exposure, to expose the insulating layer and the gate electrode in portions above the hole to the exposure light, developing the insulating layer and the gate electrode to remove the insulating layer and the gate electrode in the portions above the hole, whereby an opening portion is formed through the insulating layer and the gate electrode above the hole and part of the cathode electrode is exposed in a bottom portion of the opening portion, said opening portion having a larger diameter than said hole, (E) forming an electron-emitting-portion-forming-layer composed of a photosensitive material at least inside the opening portion, and (F) irradiating the support member with exposure light from the back surface side of the support member through said hole using said exposure-light-shielding member as a mask for exposure, to expose the electron-emitting-portion-forming-layer above the hole to the exposure light, and developing the electron-emitting-portion-forming-layer to form an electron emitting portion constituted of the electron-emitting-portion-forming-layer on the cathode electrode and inside the hole.