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AssigneeSony Corporation
InventorsMotohiro Toyota, Ichiro Saito, Toshiki Shimamura, Masakazu Muroyama
Estimating the term…
A process for producing a cold cathode field emission device comprising the steps of; (A) forming a cathode electrode on the 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 the 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 the back surface side of the support member through said hole 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 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.
A process for producing a cold cathode field emission device comprising the steps of;
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,
A process for producing a cold cathode field emission device comprising the steps of;
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,
A process for producing a cold cathode field emission device comprising the steps of;
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,
A process for producing a cold cathode field emission device comprising the steps of;
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,
A process for producing a cold cathode field emission device comprising the steps of;
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,
A process for producing a cold cathode field emission device comprising the steps of;
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,
A process for producing a cold cathode field emission device comprising the steps of;
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,
A process for producing a cold cathode field emission device comprising the steps of;
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,
A process for producing a cold cathode field emission device comprising the steps of;
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,
A process for producing a cold cathode field emission device comprising the steps of;
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,
A process for producing a cold cathode field emission device comprising the steps of;
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,
A process for producing a cold cathode field emission device comprising the steps of;
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,
A cold cathode field emission device comprising;
A cold cathode field emission device comprising;
A cold cathode field emission display comprising a substrate having an anode electrode and a phosphor layer and a support member having a cold cathode field emission device, the substrate and the support member being arranged to allow the phosphor layer and the cold cathode field emission device to face each other and bonded to each other in their circumferential portions,
A cold cathode field emission display comprising a substrate having an anode electrode and a phosphor layer and a support member having a cold cathode field emission device, the substrate and the support member being arranged to allow the phosphor layer and the cold cathode field emission device to face each other and bonded to each other in their circumferential portions,
Dependencies are inferred from the claim text.
From the US filing history. Foreign family members aren’t listed.
Backward citations are indexed for grants only.
Cold cathodes, e.g. field-emissive cathode: field-emissive cathodes
Of cold cathodes: of field emission cathodes
Provided with control means permitting the electron beam to reach selected parts of the screen, e.g. digital selection: using large area or array…
Electric discharge tubes or discharge lamps
Term end not estimated
The present invention relates to a cold cathode field emission device and a process for the production thereof, and a cold cathode field emission display and a process for the production thereof.
In the field of displays for use in television receivers and information terminals, flat type (flat panel type) displays that can comply with demands for a decrease in thickness, a decrease in weight, a larger screen size and a higher definition are being studied as substitutes for conventional mainstream cathode ray tubes (CRT). Such flat type displays include a liquid crystal display (LCD), an electroluminescence display (ELD), a plasma display (PDP) and a cold cathode field emission display (FED). Of these, the liquid crystal display is widely used as a display for an information terminal. When attempts are made to apply it to a stationary television receiver, however, it still has problems to solve for attaining a higher brightness and a larger screen size. In contrast, the cold cathode field emission display uses cold cathode field emission devices (to be sometimes referred to as “field emission device” hereinafter) capable of emitting electrons from a solid to a vacuum on the basis of a quantum tunnel effect without relying on thermal excitation. The cold cathode field emission display is therefore attracting great attention in view of a high brightness and a low power consumption.
FIGS. 32 and 33 show one example of the cold cathode field emission display (to be sometimes referred to as “display” hereinafter) having field emission devices. FIG. 32 is a schematic partial end view of a conventional display, and FIG. 33 is a schematic partial exploded perspective view of a cathode panel CP and an anode panel AP.
FIG. 1 is a schematic partial end view of a cold cathode field emission display having cold cathode field emission devices in Example 1.
FIGS. 2A to 2C are schematic partial cross-sectional views of a support member, etc., for explaining the process for producing a cold cathode field emission device in Example 1.
FIGS. 3A and 3B, following FIG. 2C, are schematic partial cross-sectional views of a support member, etc., for explaining the process for producing a cold cathode field emission device in Example 1.
The present invention will be explained on the basis of Examples with reference to drawings hereinafter.
Example 1 is concerned with the cold cathode field emission device (to be abbreviated as “field emission device” hereinafter) according to the first aspect of the present invention, the process for producing a field emission device according to the first-A aspect of the present invention, the cold cathode field emission display (to be abbreviated as “display” hereinafter) according to the first aspect of the present invention, and the process for producing a display according to the first-A aspect of the present invention.
FIG. 1 shows a schematic partial end view of the display in Example 1, and FIG. 4B shows a schematic partial end view of the field emission device in Example 1. A schematic partial exploded perspective view of a cathode panel AP and an anode panel AP is substantially the same as shown in FIG. 33.