CN1174396A - Cathode assembly of field emission display - Google Patents
Cathode assembly of field emission display Download PDFInfo
- Publication number
- CN1174396A CN1174396A CN97114547A CN97114547A CN1174396A CN 1174396 A CN1174396 A CN 1174396A CN 97114547 A CN97114547 A CN 97114547A CN 97114547 A CN97114547 A CN 97114547A CN 1174396 A CN1174396 A CN 1174396A
- Authority
- CN
- China
- Prior art keywords
- negative electrode
- gate electrode
- pixel
- cathode assembly
- field emission
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
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Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J1/00—Details of electrodes, of magnetic control means, of screens, or of the mounting or spacing thereof, common to two or more basic types of discharge tubes or lamps
- H01J1/02—Main electrodes
- H01J1/30—Cold cathodes, e.g. field-emissive cathode
- H01J1/304—Field-emissive cathodes
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J3/00—Details of electron-optical or ion-optical arrangements or of ion traps common to two or more basic types of discharge tubes or lamps
- H01J3/02—Electron guns
- H01J3/021—Electron guns using a field emission, photo emission, or secondary emission electron source
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J31/00—Cathode ray tubes; Electron beam tubes
- H01J31/08—Cathode ray tubes; Electron beam tubes having a screen on or from which an image or pattern is formed, picked up, converted, or stored
- H01J31/10—Image or pattern display tubes, i.e. having electrical input and optical output; Flying-spot tubes for scanning purposes
- H01J31/12—Image or pattern display tubes, i.e. having electrical input and optical output; Flying-spot tubes for scanning purposes with luminescent screen
- H01J31/123—Flat display tubes
- H01J31/125—Flat display tubes provided with control means permitting the electron beam to reach selected parts of the screen, e.g. digital selection
- H01J31/127—Flat display tubes provided with control means permitting the electron beam to reach selected parts of the screen, e.g. digital selection using large area or array sources, i.e. essentially a source for each pixel group
Landscapes
- Cathode-Ray Tubes And Fluorescent Screens For Display (AREA)
- Cold Cathode And The Manufacture (AREA)
Abstract
Provided is a cathode assembly of field emission display. In the cathode assembly of field emission display, an assistant access is provided to cathode and/or a gate electrode. Therefore, even when part of main access is opened caused by the damage of random pixel because of local or abnormal discharge, the access will be kept conductive by the assistant access, and the pixel with broken linearity can be prevent from generation.
Description
The present invention relates to the cathode assembly that field emission shows.
In the cathode assembly that field emission shows, do not resemble and adding thermionic emission materials to produce the cathode assembly in the thermionic vacuum tube, when forming highfield on circular cone silicon or metal electron emission tip, because the quantum mechanical tunnel phenomenon, electronics can be launched from the electronics emission tip.An example of the cathode assembly that field emission shows is illustrated among Fig. 1 and 2.Fig. 1 is the schematic plan view of the cathode assembly of field emission demonstration, and Fig. 2 is the cross sectional view along Fig. 1 line II-II.
With reference to Fig. 1 and 2, a plurality of negative electrodes 3 are arranged side by side each other on substrate 2, a plurality of gate electrodes 4 and negative electrode 3 vertical settings.Negative electrode 3 and gate electrode 4 are insulated from each other by means of the insulation material layer 5 that inserts in therebetween.The pixel 6 that the infall of negative electrode 3 and gate electrode 4 shows corresponding to field emission.Each pixel 6 comprises and is arranged on a plurality of circular cone electronics emission tip 3a between the insulation material layer 5 on the negative electrode 3 and is arranged on corresponding to the position of each electronics emission tip 3a and is formed on the gate electrode 4 to expose the hole 4a of electronics emission tip 3a.Negative electrode 3 is used to compensate for electronic and applies the electric pathway of electric current to electronics emission tip 3a, and gate electrode 4 is used as and forms electric field so that apply the electric pathway of voltage from the electronics emission tip 3a emitting electrons of negative electrode 3.
Cathode assembly is positioned under the anode (not shown) that applies with luminescent material.When applying enough voltage under vacuum environment, for anode, optional electronics emission tip 3a and gate electrode 4, form the highfield that causes from the electronics emission of electronics emission tip 3a.From the emission of the electronics of electronics emission tip 3a corresponding to the luminescent material of electronics emission tip 3a impinge anode to send light from luminescent material.
Yet in the cathode assembly that the field emission of above-mentioned routine shows, owing to produce local and abnormal discharge in operation, negative electrode 3 or gate electrode 4 can be opened at the pixel electricity of choosing wantonly, thereby can not be used as above-mentioned electric pathway.At this moment, after pixel is opened by electricity, can not be at all pixels from electronics emission tip emitting electrons.Therefore, produced the pixel of the linearity difference of the positive luminescent material that can not excite corresponding anode.
For addressing the above problem, the cathode assembly that the purpose of this invention is to provide field emission demonstration with modifying device, under the situation that the main electric pathway that makes negative electrode owing to local or undesired discharge is opened by electricity, apply electric current even be used for to other pixels that are arranged on the negative electrode.
Another object of the present invention provides the cathode assembly of the field emission demonstration with improved device, under the situation that the main electric pathway that makes gate electrode owing to local or undesired discharge is opened by electricity, apply voltage even be used for to other pixels that are arranged on the gate electrode.
For finishing above-mentioned purpose of the present invention, the cathode assembly that provides field emission to show, it have with band shape be arranged side by side each other on-chip a plurality of negative electrodes, with band shape and perpendicular to the negative electrode setting so as the infall of negative electrode and gate electrode form pixel a plurality of gate electrodes, be formed on the negative electrode in the pixel and, it is characterized in that comprising that at least one is formed on the negative electrode so that flow through the auxiliary electrical path that the electric current of negative electrode can be walked around each pixel by a plurality of electronics emission tips that the hole that is formed in the gate electrode exposes.
Preferably, at least one auxiliary electrical path is formed on the gate electrode so that the voltage that applies by gate electrode can be walked around each pixel.
For finishing second purpose of the present invention, the cathode assembly that provides field emission to show, it have with band shape be arranged side by side each other on-chip a plurality of negative electrodes, with band shape and perpendicular to the negative electrode setting so as the infall of negative electrode and gate electrode form pixel a plurality of gate electrodes, be formed on the negative electrode in the pixel and by a plurality of electronics emission tips that the hole that is formed in the gate electrode exposes, it is characterized in that comprising that at least one auxiliary electrical path is formed on the gate electrode so that the voltage that applies by gate electrode can be walked around each pixel.
Above-mentioned purpose of the present invention and advantage will be more clear by the embodiment that allows detailed description with reference to the accompanying drawings.
Fig. 1 is the schematic plan view of the cathode assembly of conventional field emission demonstration;
Fig. 2 is the schematic section along Fig. 1 line II-II;
Fig. 3 is the schematic plan view according to the cathode assembly of the field emission demonstration of the embodiment of the invention;
Fig. 4 is the schematic section along Fig. 3 line IV-IV;
Fig. 5 is the schematic plan view of the cathode assembly of the demonstration of field emission in accordance with another embodiment of the present invention.
With reference to figure 3 and 4, the cathode assembly that shows of field emission according to an embodiment of the invention, as the cathode assembly that the field emission of above-mentioned routine shows, comprise with band shape being arranged side by side a plurality of negative electrodes 30 on substrate 20 each other, a plurality of gate electrodes 40 being set with band shape and perpendicular to negative electrode 30.Negative electrode 30 and gate electrode 40 are insulated from each other by means of the insulation material layer 50 that inserts in therebetween.Each negative electrode 30 intersects part corresponding to pixel 60 with each gate electrode 40.And as the cathode assembly that the field emission of routine shows, each pixel 60 is included in a plurality of electronics emission tips 31 that are arranged on the negative electrode 30 between the insulation material layer 50 and is formed on the hole 41 to expose electronics emission tip 31 on the gate electrode 40.Negative electrode 30 is used to compensate for electronic and applies the electric pathway of electric current to electronics emission tip 31, and gate electrode 40 is used as and forms electric field so that apply the electric pathway of voltage from electronics emission tip 31 emitting electrons.
With reference to figure 3, in cathode assembly according to the present invention, the cathode assembly of the routine of describing with reference Fig. 1 and 2 is different, and each negative electrode comprises the auxiliary electrical path 32 around each pixel 60 1 sides, and each gate circuit 40 comprises the auxiliary electrical path 42 around each pixel 60 1 sides.
In the cathode assembly of present embodiment, as mentioned above, auxiliary electrical path 32,42 is offered negative electrode 30 and gate electrode 40 respectively.Therefore, even electricity is opened the arbitrary pixel 60 in negative electrode 30 primary paths owing to the local or abnormal discharge that produces in the operation that shows in field emission, the path of negative electrode 30 as a whole also can be held by the auxiliary electrical path 32 that is formed on primary path one side.And even even electricity is opened the arbitrary pixel 60 in gate electrode 40 primary paths, the path of gate electrode 40 as a whole also can be held by auxiliary electrical path 42.Therefore, even when the primary path of negative electrode 30 and/or gate electrode 40 is partially opened, a plurality of pixels 60 also can emitting electrons, thereby prevent that the luminescent material in the pixel that linearity degenerates fully can not be luminous, wherein, luminescent material is coated on the anode and corresponding to the edge and has the negative electrode of the primary path of opening and the pixel that gate electrode is provided with.
According to embodiments of the invention, negative electrode 30 and gate electrode 40 comprise auxiliary electrical path 32,42, still, and negative electrode 30 or gate electrode 40 all can comprise auxiliary electrical path 32 or 42.And according to embodiments of the invention, auxiliary electrical path 32 only forms on a side of each negative electrode 30 and auxiliary electrical path 42 only forms on the side at each gate electrode 40.Herein, auxiliary electrical path 42 is illustrated with arc form.But, as shown in Figure 5, auxiliary electrical path 32 ' can be formed on the both sides of each pixel of negative electrode 30.At this moment, auxiliary electrical path 32 ' can be formed by linearity.And, also be formed on the both sides (see figure 3) of each gate electrode 40 with the auxiliary electrical path (not shown) of form of straight lines.
According to the cathode assembly that field emission of the present invention shows, the auxiliary electrical path is provided for negative electrode and/or gate electrode.Therefore, even when arbitrary pixel causes that owing to local or undesired discharge damage the part primary path is opened, also can keep whole conducting to prevent to produce the pixel that linearity degenerates by the auxiliary electrical path.
Claims (3)
1. the cathode assembly that shows of a field emission, it have with band shape be arranged side by side each other on-chip a plurality of negative electrodes, with band shape and perpendicular to described negative electrode setting so as the infall of described negative electrode and gate electrode form pixel a plurality of gate electrodes, be formed on the described negative electrode in the pixel and, it is characterized in that comprising that at least one is formed on the described negative electrode so that flow through the auxiliary electrical path that the electric current of described negative electrode can be walked around each described pixel by a plurality of electronics emission tips that the hole that is formed in the described gate electrode exposes.
2. the cathode assembly that shows according to the field emission of claim 1 is characterized in that at least one auxiliary electrical path is formed on the described gate electrode so that the voltage that applies by described gate electrode can be walked around each described pixel.
3. the cathode assembly that shows of a field emission, it have with band shape be arranged side by side each other on-chip a plurality of negative electrodes, with band shape and perpendicular to described negative electrode setting so as the infall of described negative electrode and gate electrode form pixel a plurality of gate electrodes, be formed on the described negative electrode in the pixel and by a plurality of electronics emission tips that the hole that is formed in the described gate electrode exposes, it is characterized in that comprising that at least one auxiliary electrical path is formed on the described gate electrode so that the voltage that applies by described gate electrode can be walked around each described pixel.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1019960027533A KR100195174B1 (en) | 1996-07-08 | 1996-07-08 | Structure of cathode for field emission display device |
| KR27533/96 | 1996-07-08 | ||
| KR27533/1996 | 1996-07-08 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1174396A true CN1174396A (en) | 1998-02-25 |
| CN1108625C CN1108625C (en) | 2003-05-14 |
Family
ID=19465724
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN97114547A Expired - Fee Related CN1108625C (en) | 1996-07-08 | 1997-07-08 | Cathode assembly of field emission display |
Country Status (2)
| Country | Link |
|---|---|
| KR (1) | KR100195174B1 (en) |
| CN (1) | CN1108625C (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100423161C (en) * | 2002-04-22 | 2008-10-01 | 三星Sdi株式会社 | Electron emission source composition for field emission display device and field emission display device manufactured by the same |
| WO2019218697A1 (en) * | 2018-05-14 | 2019-11-21 | Dong Yaobin | Electronic generator, net charge generating device and electrostatic loudspeaker |
-
1996
- 1996-07-08 KR KR1019960027533A patent/KR100195174B1/en not_active IP Right Cessation
-
1997
- 1997-07-08 CN CN97114547A patent/CN1108625C/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100423161C (en) * | 2002-04-22 | 2008-10-01 | 三星Sdi株式会社 | Electron emission source composition for field emission display device and field emission display device manufactured by the same |
| WO2019218697A1 (en) * | 2018-05-14 | 2019-11-21 | Dong Yaobin | Electronic generator, net charge generating device and electrostatic loudspeaker |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1108625C (en) | 2003-05-14 |
| KR100195174B1 (en) | 1999-07-01 |
| KR980011664A (en) | 1998-04-30 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20030514 Termination date: 20120708 |