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Flat panel display including electron emitting device |
| RE40566 |
Flat panel display including electron emitting device
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| Patent Drawings: | |
| Inventor: |
Yoshioka, et al. |
| Date Issued: |
November 11, 2008 |
| Application: |
09/384,326 |
| Filed: |
August 26, 1999 |
| Inventors: |
Yoshioka; Seishiro (Hiratsuka, JP)
Nomura; Ichiro (Atsugi, JP)
Suzuki; Hidetoshi (Yokohama, JP)
Takeda; Toshihiko (Yokohama, JP)
Kaneko; Tetsuya (Yokohama, JP)
Banno; Yoshikazu (Machida, JP)
Yokono; Kojiro (Yokohama, JP)
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| Assignee: |
Canon Kabushiki Kaisha (Tokyo, JP) |
| Primary Examiner: |
Santiago; Mariceli |
| Assistant Examiner: |
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| Attorney Or Agent: |
Fitzpatrick, Cella, Harper & Scinto |
| U.S. Class: |
313/309; 313/310; 313/311; 313/336; 313/346R; 313/351; 315/169.2; 345/56; 345/75.2 |
| Field Of Search: |
313/307; 313/310; 313/336; 313/346R; 313/346DC; 313/351; 313/355; 313/495; 313/496; 313/497; 315/169.3 |
| International Class: |
H01J 1/30; G09G 3/20 |
| U.S Patent Documents: |
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| Foreign Patent Documents: |
1800952; 1764994; 2542349; 2012101; 2413942; 0073031; 0 299 461; 0299461; 0 299 461; 0 388 984; 0 405 262; 0523702; 0536731; 0 299 461; 1 267 029; 1 335 979; 2060991; 2060991; 44-27852; 44-27852; 44-26125; 44-27853; 44-28009; 44-32247; 45-31615; 46-20943; 46-20944; 46-20949; 46-24456; 46-38060; 54-1147; 56-18336; 56-018336; 56-71239; 56-071239; 57-118355; 59-169034; 61-156265; 64-31332; 1-283749; 1-309242; 855782 |
| Other References: |
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"Energy Distribution Emitted Electrons from Electroformed MIM Structures: The Carbon Island Model," M. Bischoff, H. Pagnia and J. Trickl, Int. J. Electronics, vol. 73, No. 5, pp. 1009-1010 (1992), (no month). cited by other.
"On the Electron Emission from Evaporated Thin Au Films," M. Bischoff, R. Holzer and H. Pagnia, Physics Letters, vol. 62A, No. 7 (Oct. 3, 1977), pp. 512-514. cited by other.
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"Evidence for the Contribution of an Adsorbate to the Voltage-Controlled Negative Resistance of Gold Island Film Diodes," R. Blessing, H. Pagnia and R. Schmitt, Thin Solid Films, vol. 78, pp. 397-401 (1981), (no month). cited by other.
"Water-Influenced Switching in Discontinuous Au Film Diodes," R. Muller and H. Pagnia, Materials Letters, vol. 2, No. 4A, pp. 283-285 (Mar. 1984). cited by other.
"Influence of Organic Molecules on the Current-Voltage, Characteristic of Planar MIM Diodes," H. Pagnia, N. Sotnik and H. Strauss, Phy. Stat, Sol., vol. 90, pp. 771-778 (1985), (no month). cited by other.
"Influence of Gas Composition on Regeneration in Metal/Insulator/Metal Diodes," M. Borbonus, H. Pagnia and N. Sotnik, Thin Solid Films, vol. 151, pp. 333-342 (1987), (no month). cited by other.
"Prospects for Metal/non-Metal Microsystems: Sensors, Sources, and Switches," H. Pagnia, Int. J. Electronics, vol. 73, No. 5, pp. 818-825 (1992), (no month). cited by other.
"Carbon-nanoslit Model for The Electroforming Process in MIM Structures," M Bischoff, Int. J. Electronics, vol. 70, No. 3, pp. 491-498 (1991), (no month). cited by other.
W.P. Dyke, et al., "Field Emission," Advances in Electronics and Electron Physics, 1956, pp. 90-185, (no month). cited by other.
C.A. Spindt et al., "Physical Properties of Thin-film field emission cathodes with molybdenum cones," J. Appl. Phys., vol. 47 (1976) pp. 5248-5263, (December). cited by other.
C.A. Mead, "Operation of Tunnell-Emission Devices," J. Appl. Phys., vol. 32 (1961) pp. 646-652, (April) cited by other.
K. Nakamura, et al., "Interaction of A1 layers with polycrystalline Si", Journal of Applied Physics, vol. 46, No. 11, Nov. 1975, pp. 4678-4684. cited by other.
Hayt "Engineering Electromagnetics" 1981 McGraw Hill, Inc. p. 509, (no month). cited by other.
Elsevier Seguoia S.A., "Thin Film Solids", An International Journal on Their Science and Technology, vol. 9 (1972) pp. 317-328, Electrical Conduction & Electron Emissions of Discontinuous Thin Films, (no month). cited by other.
T. Izumiya et al., Kokai Butsuri, vol. 8, No. 4, 39-9 (1973) (Japanese). cited by other.
"Electroluminescence spectra of Discontinuous Conducting Thin Films" (1988), M. Bischoff et al., Thin Solid Films, No. 165, pp. 49-54, (no month). cited by other.
"Electroluminescence Spectra From Gold Island Structure Thin Films" (1975), M. Bischoff et al., Thin Solid Films, pp. 303-312, (no month). cited by other.
Bistable Switching in Electroformed Metal-Insulator-Metal Devices (1988), H. Pagnia et al., Phys. Stat, Sol. (a), No. 108, pp. 11-65, (no month). cited by other.
"Metal Influence on Switching MIM Diodes", H. Pagnia et al., Phys. Stat. Sol. (a) 111,387 (1989), (no month). cited by other.
G. Dittmer, "Electrical Conduction and Electron Emission of Discontinuous Thin Films", Thin Solid Films, vol. 9, pp. 317-328, 1972, (no month). cited by other.
H. Araki et al., "Electroforming and Electron Emission of Carbon Thin Films", Shinku, vol, 26, No. 1, pp. 22-29, 1983 (with translation). (no month). cited by other. |
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| Abstract: |
A display device consisting of an electron-emitting device which is a laminate of an insulating layer and a pair of opposing electrodes formed on a planar substrate. A portion of the insulating layer is between the electrodes and a portion containing an electron emitting region in between one electrode and the substrate. Electrons are emitted from the electron emission region by a voltage to the electrodes, thereby stimulating a phosphorous to emitting light. |
| Claim: |
We claim:
1. A display device comprising: an electron-emitting device, comprising a semiconductor formed between opposing electrodes and wherein fine particles are dispersed within saidsemiconductor or on said semiconductor; and fluorescent members located at the inner side of a face plate above the electron-emitting device, wherein said fluorescent members emit light by a stimulation of the electrons emitted from saidelectron-emitting device.
2. The display device of claim 1, having the structure in which said fine particles are completely included into said semiconductor.
3. The display device of claim 1, having the structure that said fine particles are partly contained in said semiconductor and partly exposed therefrom.
4. The display device of claim 1, wherein said fine particles are made of a substance selected from the group consisting of borides, carbides, nitrides, metals, metal oxides, semiconductors, and carbon.
5. The display device of claim 4, wherein said fine particles comprises at least two kinds of different materials.
6. The display device of claim 4, wherein said fine particles are selected from the group consisting of Nb, Mo, Rh, Hf, Ta, W, Re, Pt, Ti, Au, Ag, Cu, Cr, Al, Co, Ni, Fe, Pb, Pd, Cs and Ba.
7. The display device of claim 4, wherein said fine particles comprise a metal oxide selected from the group consisting of In.sub.2O.sub.3, SnO.sub.2, BaO, MgO and Sb.sub.2O.sub.3.
8. The display device of claim 4, wherein said fine particles comprise Pd or SnO.sub.2.
9. The display device of claim 5, wherein said different material comprise material having different conductivities.
10. The display device of claim 1, wherein said fine particles are dispersed between said electrode by coating.
11. The display device of claim 1, wherein said fine particles are dispersed between said electrode by vacuum deposition.
12. The display device of claim 1, wherein said fine particles are dispersed by thermal decomposition of an organic metal compound.
13. The display device of claim 1, having the device structure in which the electrodes are formed on a substrate, the semiconductor is formed between said electrodes, and the fine particles are arranged inside or on said semiconductor in adispersed state.
14. The display device of claim 1, wherein a plurality of said electron-emitting device are mounted on a single plane.
15. A display device comprising: an electron-emitting device, comprising an insulating layer, is disposed between opposing electrodes on a planar substrate, and having fine particles arranged within said insulating layer in a dispersed state; wherein electrons are emitted by applying a voltage to said electrodes; fluorescent members located at the inner face of a face plate disposed above the electron-emitting device, wherein said fluorescent members emit light by a stimulation of theelectrons emitted from said electron-emitting device; and any of said fine particles is partly included into and partly exposed from said insulating layer.
16. The display device of claim 15, wherein said fine particles are dispersed between the electrodes by coating.
17. The display device of claim 15, wherein said first particles are dispersed between the electrodes by vacuum deposition.
18. The display device of claim 15, wherein said fine particles are dispersed between the electrodes by thermal decomposition of an organic metal compound.
19. The display device of claim 15, wherein said fine particles are composed of a material selected from the group consisting of borides, carbides, nitrites, metals, metal oxides, semiconductors and carbon.
20. The display device of claim 19, wherein said material comprises a metal oxide selected from the group consisting of In.sub.2O.sub.3, SmO.sub.2, BaO, MgO and Sb.sub.2O.sub.3.
21. The display device of claim 15, wherein said fine particles comprise at least two kinds of different materials.
22. The display device of claim 21, wherein said different materials comprise material having different conductivities.
23. The display device of claim 15, wherein said fine particles are composed of a material selected from the group consisting Nb, Mo, Rh, Hf, Ta, W, Re, Ir, Pt, Ti, Au, Ag, Cu, Ci, Al, Co, Ni, Fe, Pb, Pd, Cs and Ba.
24. The display device of claim 15, wherein said fine particles complete Pd or SnO.sub.2.
25. The display device of claim 15, comprising a substrate comprising a porous glass in which a metal or a metal oxide is deposited.
26. The display device of claim 15, comprising a colored glass containing metal colloid fine particles.
27. A display device comprising: an electron-emitting device, comprising opposing electrodes formed on an insulating layer disposed on a planar substrate, and fine particles being dispersed within said insulating layer between said electrodes; fluorescent members located at the inner side of a face plate disposed above the electron-emitting device, wherein said fluorescent members emit light by a stimulation of the electrons emitted from said electron-emitting device; and said fine particlesare so structured that any of said fine particles are partly included into and partly exposed from said insulating layer.
28. The display device of claim 27, wherein said insulating layer comprises a low-melting glass.
29. The display device of claim 27, wherein said insulating layer has a film thickness of from several ten angstroms to several ten microns.
30. The display device of claim 27, wherein said fine particles are composed of a material selected from the group consisting of borides, carbides, nitrites, metals, metal oxides, semiconductors and carbon.
31. The display device of claim 30, wherein said fine particles material comprises a metal oxide selected from the group consisting of In.sub.2O.sub.3, SnO.sub.2, BnO, MgO and Sb.sub.2O.sub.3.
32. The display device of claim 27, wherein said fine particles comprise at least two kinds of different materials.
33. The display device of claim 27, wherein said different materials comprise materials having different conductivities.
34. The display device of claim 27, wherein said fine particles are composed of a material selected from the group consisting of Nb, Mo, Rh, Hf, Ta, W, Re, In, Pt, Ti, Au, Ag, Cu, Cr, Al, Co, Ni, Fe, Pb, Pd, Cs and Ba.
35. The display device of claim 27, wherein said fine particles comprise Pd or SnO.sub.2.
36. A display device comprising: a face plate; an electron-emitting device, comprising opposing electrodes disposed on a planar insulating substrate, and fine particles being dispersed between said opposing electrodes and being partly includedinto said planar insulating substrate, wherein electrons are emitted by applying a voltage to said electrodes; and fluorescent members located at the inner side of said face plate above the electron-emitting device, wherein said fluorescent members emitlight by a stimulation of the electrons emitted from said electron-emitting device.
37. The display device of claim 36, wherein said fine particles are selected from the group consisting of borides, carbides, nitrites, metals, metal oxides, semiconductors and carbon.
38. The display device of claim 37 wherein said fine particles comprise a metal oxide selected from the group consisting of In.sub.2O.sub.3, SnO.sub.2, BaO, MgO and Sb.sub.2O.sub.3.
39. The display device of claim 36, wherein said fine particles comprise at least two kinds of different materials.
40. The display device of claim 39, wherein said different materials comprise different materials having different conductivities.
41. The display device of claim 36, wherein said fine particles are selected from the group consisting of Nb, Mo, Rh, Hf, Ta, W, Re, Ir, Pt, Ti, Au, Ag, Cu, Cr, Al, Co, Ni, Fe, Pb, Pd, Cs and Ba.
42. The display device of claim 36, wherein said fine particles comprise Pd or SnO.sub.2.
.Iadd.43. A display apparatus comprising: an electron source plate including: a substrate, and a plurality of electron emission elements arranged in a matrix of rows and columns on said substrate, each electron emission element including: afirst electrode disposed on an upper surface of said substrate, a second electrode disposed on the upper surface of said substrate, said first and second electrodes both lying in substantially a same plane that is substantially parallel to the uppersurface of said substrate; and an electron-emission layer having an electron emission region included in at least a portion thereof, said electron emission region containing an electrical discontinuity, at least a portion of said electron-emission layerextending from a surface of the first electrode to a surface of the second electrode, for emitting an electron from the electron emission region upon an application of a low voltage across said first and second electrodes; a matrix wire configurationcomprising row wires and column wires respectively corresponding to the rows and columns of the electron emission elements arranged in the matrix; a signal applier, arranged for applying (i) a scan signal to the row wires, and (ii) a modulation signalto the column wires corresponding to the scanned electron emission elements, to cause a low voltage to be applied across the first and second electrodes of each electron emission element, wherein the signal applier applies the modulation signal to thecolumn wires in synchronization with the application of the scan signal to the row wires; and a fluorescent device plate including: a transparent face plate, a fluorescent layer, an acceleration electrode, and an acceleration voltage applier, arrangedfor applying an acceleration voltage to the acceleration electrode, wherein a space between the electron source plate and the fluorescent device plate is maintained in a vacuumized condition by a housing, and the signal applier is disposed outside of thehousing, and wherein said fluorescent layer is located at an inner side of said transparent face plate, disposed above said electron emission elements..Iaddend.
.Iadd.44. The display apparatus of claim 43, wherein said modulation signal is made according to an information signal..Iaddend.
.Iadd.45. The display apparatus of claim 43, wherein said electron emission region comprises a conductive region and an insulating region so that the electrical discontinuity takes place between the conductive region and the insulatingregion..Iaddend.
.Iadd.46. The display apparatus of claim 43, wherein said electron-emission layer contains carbon..Iaddend.
.Iadd.47. The display apparatus of claim 43, wherein said acceleration voltage is in the range of 0.8 kV to 1.5 kV..Iaddend.
.Iadd.48. The display apparatus of claim 43, wherein said signal applier simultaneously applies the modulation signal to the electron emission elements on a selected row in synchronization with the scan signal..Iaddend.
.Iadd.49. The display apparatus of claim 43, wherein ends of said first and second electrodes are disposed in a lateral direction at least roughly parallel to the surface of the substrate and face each other, and said electron-emission layer isdisposed between the ends of those electrodes..Iaddend.
.Iadd.50. The display apparatus of claim 49, wherein said signal applier applies the voltage across the electrodes to generate an electric field across the surface of the electron-emission layer..Iaddend.
.Iadd.51. The display apparatus of claim 43, wherein said voltage applied across said first and second electrodes is less than or equal to 32 Volts..Iaddend.
.Iadd.52. The display apparatus of claim 43, further comprising at least one grid electrode disposed between said electron source plate and said fluorescent device plate..Iaddend.
.Iadd.53. The display apparatus of claim 52, further comprising at least one electrical connector coupled to said at least one grid electrode, at least a portion of said at least one electrical connector being disposed outside of said vacuumedhousing..Iaddend.
.Iadd.54. The display apparatus claim 43, wherein the signal applier applies the scan signal to the row wires row by row..Iaddend.
.Iadd.55. A display apparatus comprising: an electron source plate, having a substrate and a plurality of electron-emitting devices arranged in a matrix of rows and columns on the substrate, said electron source plate also comprising a matrixconfiguration of a plurality of row wires and N column wires respectively corresponding to the rows and columns of the electron-emitting devices arranged in the matrix, each of said N column wires being connected exclusively to a corresponding one of Ncolumn leads; a fluorescent device plate having a transparent face plate, a fluorescent layer and an acceleration electrode; a housing having a structure adapted for maintaining a vacuumized condition in a space between said electron source plate andsaid fluorescent device plate, at least a portion of said structure being formed by said electron source plate and said fluorescent device plate; and a voltage applier disposed outside of the housing, and arranged for applying (1) a scan signal to therow wires, (2) a modulation signal to the column wires, and (3) an acceleration voltage to the acceleration electrode to accelerate electrons emitted from the electron-emitting devices toward the fluorescent layer of said fluorescent device plate, themodulation signal comprising a series of one-row data of image data which is to be assigned to the N column wires and each one-row data of image data in the series being sequentially applied one-row data by one-row data to the N column leads insynchronization with the scan signal, wherein said fluorescent layer is located at an inner side of said transparent face plate, disposed above said electron-emitting devices..Iaddend.
.Iadd.56. The display apparatus of claim 55, wherein the modulation signal is an information signal..Iaddend.
.Iadd.57. The display apparatus of claim 55, wherein said fluorescent device plate comprises red, green, and blue fluorescent members..Iaddend.
.Iadd.58. The display apparatus of claim 55, wherein said fluorescent device plate comprises a laminated layer having the fluorescent layer and the acceleration electrode..Iaddend.
.Iadd.59. A display apparatus comprising: an electron source plate, having a substrate and a plurality of electron-emitting devices arranged in a matrix of rows and columns on the substrate, said electron source plate also comprising a matrixconfiguration of a plurality of row wires and N column wires respectively corresponding to the rows and columns of the electron-emitting devices arranged in the matrix, each of said N column wires being connected exclusively to a corresponding one of Ncolumn leads; a fluorescent device plate comprising a transparent face plate and a laminated layer, the laminated layer having a fluorescent layer and an acceleration electrode; a housing having a structure adapted for maintaining a vacuumizedcondition in a space between said electron source plate and said fluorescent device plate, at least a portion of said structure being formed by said electron source plate and said fluorescent device plate; and a voltage applier disposed outside of thehousing, and arranged for applying (1) a scan signal to the row wires, (2) a modulation signal to the column wires, and (3) an acceleration voltage to the acceleration electrode to accelerate electrons emitted from the electron-emitting devices towardthe fluorescent layer of said fluorescent device plate, the modulation signal comprising a series of one-row data of image data which is to be assigned to the N column wires and each one-row data of image data in the series being sequentially appliedone-row data by one-row data to the N column leads in synchronization with the scan signal, wherein said fluorescent layer is located at an inner side of said transparent face plate, disposed above said electron-emitting devices..Iaddend.
.Iadd.60. The display apparatus of claim 59, further comprising an electrode disposed between said fluorescent device plate and the electron-emitting devices..Iaddend.
.Iadd.61. The display apparatus of claim 60, wherein the electrode has holes for transmitting the electrons emitted from the electron-emitting devices..Iaddend.
.Iadd.62. The display apparatus of claim 61, wherein each of the holes is arranged to correspond with each electron-emitting device..Iaddend.
.Iadd.63. The display apparatus of claim 60, wherein a voltage is applied to the electrode..Iaddend.
.Iadd.64. The display apparatus of claim 59, wherein at least one of the electron-emitting devices comprises a non-homogeneous layer..Iaddend.
.Iadd.65. The display apparatus of claim 59, wherein at least one of the electron-emitting devices comprises an electrical discontinuity..Iaddend.
.Iadd.66. The display apparatus of claim 59, wherein at least one of the electron-emitting devices comprises carbon..Iaddend.
.Iadd.67. The display apparatus of claim 59, wherein at least one of the electron-emitting devices comprises a first electrode arranged on the substrate, an insulating member arranged on the substrate so that an end of the insulating memberforms a side wall on the substrate, and a second electrode arranged on the insulating member..Iaddend.
.Iadd.68. The display apparatus of claim 67, wherein an electron-emitting portion is formed at a region of the side wall..Iaddend.
.Iadd.69. The display apparatus of claim 67, wherein an electron-emitting portion is formed at a region of the first electrode..Iaddend.
.Iadd.70. The display apparatus of claim 67, wherein at least one of the electron-emitting devices comprises carbon..Iaddend.
.Iadd.71. The display apparatus of claim 59, wherein the modulation signal is an information signal..Iaddend.
.Iadd.72. The display apparatus of claim 59, wherein the modulation signal is applied simultaneously to scanned ones of the electron-emitting devices in synchronization with the scan signal..Iaddend.
.Iadd.73. The display apparatus of claim 59, wherein said fluorescent device plate comprises red, green, and blue fluorescent members..Iaddend.
.Iadd.74. A display apparatus comprising: an electron source plate, having a substrate and a plurality of electron-emitting devices arranged in a matrix of rows and columns on the substrate, said electron source plate also comprising a matrixconfiguration of a plurality of row wires and N column wires respectively corresponding to the rows and columns of the electron-emitting devices arranged in the matrix, each of said N column wires being connected exclusively to a corresponding one of Ncolumn leads; a fluorescent device plate comprising a transparent face plate and a laminated layer, the laminated layer having a fluorescent layer and an acceleration electrode; a housing having a structure adapted for maintaining a vacuumizedcondition in a space between said electron source plate and said fluorescent device plate, at least a portion of said structure being formed by said electron source plate and said fluorescent device plate; and leads extending from inside of said housingto outside of said housing, and arranged for applying (1) a scan signal to the row wires, (2) a modulation signal to the column wires, and (3) an acceleration voltage to the acceleration electrode to accelerate electrons emitted from theelectron-emitting devices toward the fluorescent layer of said fluorescent device plate, the modulation signal comprising a series of one-row data of image data which is to be assigned to the N column wires and each one-row data of image data in theseries being sequentially applied one-row data by one-row data to the N column leads in synchronization with the scan signal, wherein said fluorescent layer is located at an inner side of said transparent face plate, disposed above said electron-emittingdevices..Iaddend.
.Iadd.75. The display apparatus of claim 74, wherein the modulation signal is an information signal..Iaddend.
.Iadd.76. The display apparatus of claim 74, wherein the modulation signal is applied simultaneously to scanned ones of the electron-emitting devices in synchronization with the scan signal..Iaddend.
.Iadd.77. The display apparatus of claim 74, wherein said fluorescent device plate comprises red, green, and blue fluorescent members..Iaddend.
.Iadd.78. The display apparatus of claim 74, further comprising an electrode disposed between said fluorescent device plate and the electron-emitting devices..Iaddend.
.Iadd.79. The display apparatus of claim 78, wherein the electrode has holes for transmitting the electrons emitted from the electron-emitting devices..Iaddend.
.Iadd.80. The display apparatus of claim 79, wherein each of the holes is arranged to correspond with each electron-emitting device..Iaddend.
.Iadd.81. The display apparatus of claim 78, wherein a voltage is applied to the electrode..Iaddend.
.Iadd.82. The display apparatus of claim 74, wherein at least one of the electron-emitting devices comprises a non-homogeneous layer..Iaddend.
.Iadd.83. The display apparatus of claim 74, wherein at least one of the electron-emitting devices comprises an electrical discontinuity..Iaddend.
.Iadd.84. The display apparatus of claim 74, wherein at least one of the electron-emitting devices comprises carbon..Iaddend.
.Iadd.85. The display apparatus of claim 74, wherein at least one of the electron-emitting devices comprises a first electrode arranged on the substrate, an insulating member arranged on the substrate so that an end of the insulating memberforms a side wall on the substrate, and a second electrode arranged on the insulating member..Iaddend.
.Iadd.86. The display apparatus of claim 55, wherein an electron-emitting portion is formed at a region of the side wall..Iaddend.
.Iadd.87. The display apparatus of claim 55, wherein an electron-emitting portion is formed at a region of the first electrode..Iaddend.
.Iadd.88. The display apparatus of claim 55, wherein at least one of the electron-emitting devices comprises carbon..Iaddend. |
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