| US 7,508,125 B2 | ||
| Field Emission Display (FED) having electron emission structure to improve focusing characteristics of electron beam | ||
| Tae-Sik Oh, Suwon-si (Korea, Republic of) | ||
| Assigned to Samsung SDI Co., Ltd., Suwon-si, Gyeonggi-do (Korea, Republic of) | ||
| Filed on Dec. 23, 2005, as Appl. No. 11/315,177. | ||
| Claims priority of application No. 10-2005-0001543 (KR), filed on Jan. 07, 2005. | ||
| Prior Publication US 2006/0214559 A1, Sep. 28, 2006 | ||
| Int. Cl. H01J 1/62 (2006.01) | ||
| U.S. Cl. 313—497 [313/495] | 12 Claims |
| 1. A Field Emission Display (FED), comprising:
a first substrate;
a cathode electrode arranged on the first substrate in a first direction;
a cathode focusing electrode arranged on the cathode electrode and having a rectangular first aperture elongated in the first
direction;
an insulating layer arranged on the first substrate to cover the cathode focusing electrode and having a plurality of second
apertures arranged in regions where the insulating layer overlaps the cathode electrode in a second direction perpendicular
to the first direction and connected to the first aperture;
a gate electrode arranged on the insulating layer to extend in the second direction and having a plurality of third apertures
connected to the corresponding second apertures;
an emitter arranged on the cathode electrode within the first aperture; and
a second substrate arranged opposite to and spaced apart from the first substrate and having an anode electrode and a phosphor
layer thereon;
wherein the third aperture is elongated in the second direction so as to be longer in the second direction than in the first
direction; and
wherein the first aperture corresponds to each pixel, and wherein the plurality of second and third apertures are arranged
for each pixel.
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