Patent ID: 7495381

Claim:
An electron emission device (EED) comprising: a first substrate and a second substrate facing each other, wherein each of the first and second substrates comprises a glass substrate having a thermal expansion coefficient ranging from about 1.0×10 −6 to about 10.0×10 −6 /° C.; at least one cathode electrode and at least one gate electrode on said first substrate, wherein the cathode electrode and gate electrode are insulated from each other by an insulating layer; at least one electron emitting region on said at least one cathode electrode, the at least one electron emitting region comprising an electron emitting material; at least one anode electrode and red, green and blue phosphor layers on said second substrate; and a grid electrode having holes for passing electrons emitted from said electron emitting regions, wherein a thermal expansion coefficient of said grid electrode ranges from 80 to 120% of the thermal expansion coefficient of said first substrate and second substrate, and wherein the grid electrode comprises a nickel-iron alloy having a nickel content ranging from about 45 to about 50 wt % and said grid electrode further comprises at least one metal selected from the group consisting of cobalt and titanium.