US 2005/0082964 A1Published application

Cold cathode electric field electron emission display device

AssigneeSony Corporation

InventorMorikazu Konishi

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Abstract

A cold cathode field emission display comprising at least (A) a display panel having a cathode panel CP provided with a plurality of electron-emitting regions EA and an anode panel AP provided with a phosphor layer 31 and an anode electrode 34, said cathode panel and said anode panel being bonded to each other in their circumferential regions, (B) a focus-electrode control circuit 41, (C) a resistance element R, and (D) a capacitor C, in which the focus electrode 15 formed in the electron-emitting region EA is connected to a first voltage-output portion 41A of the focus-electrode control circuit 41 through the resistance element R, and the focus electrode 15 is further connected to a second voltage-output portion 41B of the focus-electrode control circuit 41 through the capacitor C.

Claims37

Dependent claims

A cold cathode field emission display comprising at least:

(A) a display panel having a cathode panel provided with a plurality of electron-emitting regions and an anode panel provided with a phosphor layer and an anode electrode, said cathode panel and said anode panel being bonded to each other in their circumferential regions,
(B) a focus-electrode control circuit,
(C) a resistance element, and
(D) a capacitor,
each electron-emitting region comprising:
(a) a cathode electrode being formed on a supporting member and extending in a first direction,
(b) an insulating layer formed on the supporting member and the cathode electrode,
(c) a gate electrode being formed on the insulating layer and extending in a second direction different from the first direction,
(d) an insulating film formed on the insulating layer and the gate electrode,
(e) a focus electrode formed on the insulating film,
(f) a first opening portion formed through that portion of the focus electrode that is positioned in an overlap region of the cathode electrode and the gate electrode and through the insulating film positioned therebelow,
(g) a plurality of second opening portions being formed through that portion of the gate electrode that is positioned in the overlap region of the cathode electrode and the gate electrode and communicating with the first opening portion,
(h) a third opening portion being formed through the insulating layer and communicating with the second opening portion, and
(i) an electron-emitting portion exposed in the bottom portion of the third opening portion,
the focus electrode being connected to a first voltage-output portion of the focus-electrode control circuit through the resistance element, and
the focus electrode being further connected to a second voltage-output portion of the focus-electrode control circuit through the capacitor.

13 more elements

A cold cathode field emission display comprising at least:

(A) a display panel having a cathode panel provided with a plurality of electron-emitting regions and an anode panel provided with a phosphor layer and an anode electrode, said cathode panel and said anode panel being bonded to each other in their circumferential regions,
(B) a focus-electrode control circuit, and
(C) a resistance element, and each electron-emitting region comprising:
(a) a cathode electrode being formed on a supporting member and extending in a first direction,
(b) an insulating layer formed on the supporting member and the cathode electrode,
(c) a gate electrode being formed on the insulating layer and extending in a second direction different from the first direction,
(d) an insulating film formed on the insulating layer and the gate electrode,
(e) a focus electrode formed on the insulating film,
(f) a first opening portion formed through that portion of the focus electrode that is positioned in an overlap region of the cathode electrode and the gate electrode and through the insulating film formed therebelow,
(g) a plurality of second opening portions being formed through that portion of the gate electrode that is positioned in the overlap region of the cathode electrode and the gate electrode and communicating with the first opening portion,
(h) a third opening portion being formed through the insulating layer and communicating with the second opening portion, and
(i) an electron-emitting portion exposed in the bottom portion of the third opening portion,
the focus electrode having a structure in which a focus-electrode main portion, a dielectric material layer and a counterpart electrode are stacked,
the focus-electrode main portion, the dielectric material layer and the counterpart electrode constituting a capacitor,
the focus-electrode main portion being connected to a first voltage-output portion of the focus-electrode control circuit through the resistance element, and
the counterpart electrode being connected to a second voltage-output portion of the focus-electrode control circuit.

13 more elements

Dependencies are inferred from the claim text.

Facts

Application: 10/503,991Filed 27 Mar 2003
Priority: JP 2002-1296061 May 2002
Published: 21 Apr 2005
Term ends: Not estimatedThe source records don’t support an estimate.

Classification13 codes

H01J 29/467
Arrangements of electrodes and associated parts for generating or controlling the ray or beam, e.g. electron-optical arrangement: control…
G09G 3/22
For presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged…:…
H01J 9/025
Of cold cathodes: of field emission cathodes
H01J 29/481
Electron guns: electron guns using field-emission, photo-emission, or secondary-emission electron source

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US 7,064,493 B2Related patent
US 2005/0082964 A1This patent

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