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Electron-emitting device and image display apparatus

An electron emission and image display technology, applied in image/graphic display tubes, electrical components, discharge tube/lamp parts, etc., can solve problems such as fluctuations in electron emission, difficulty in obtaining high-definition display images, and brightness fluctuations

Inactive Publication Date: 2009-11-18
CANON KK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0008] However, there is a problem that, in the case where the surface conduction type electron-emitting device in the related art is driven, when the sheet resistance of the conductive film is small, fluctuations in the amount of electron emission occur (the fluctuation of the electron emission current occurs in a short time) Phenomenon)
In an image display device using an electron-emitting device, there are cases where a change in brightness or a fluctuation in brightness of adjacent pixels, which is considered to be due to a fluctuation in the amount of electron emission, occurs
Therefore, it is difficult to obtain high-definition and good display images

Method used

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  • Electron-emitting device and image display apparatus

Examples

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no. 1 example

[0035] First, refer to Figure 1A to Figure 1D The basic configuration of the most typical embodiment of the first electron-emitting device of the present invention will be described. Figure 1A is a schematic plan view showing a typical configuration in this embodiment. Figure 1B is along Figure 1A A schematic cross-sectional view taken on line 1B-1B. Figure 1C is along Figure 1A A schematic cross-sectional view taken by line 1C-1C. Figure 1D is along Figure 1APerspective view cut by line 1C-1C.

[0036] In the present invention, it is assumed that the facing direction of the device electrodes 2 and 3 is the X direction, the direction perpendicular to the facing direction (the direction along the gap 7 between the device electrodes) is assumed to be the Y direction, and the substrate The normal direction of 1 is the Z direction.

[0037] The device electrodes 2 and 3 are arranged on the insulating substrate 1 so as to be separated from each other by a distance L1. T...

no. 2 example

[0084] will refer to Figure 4A to Figure 4D The basic configuration of the most typical embodiment of the second electron-emitting device of the present invention is described. Figure 4A is a schematic plan view showing a typical configuration in this embodiment. Figure 4B is along Figure 4A A schematic cross-sectional view taken by line 4B-4B. Figure 4C is along Figure 4A A schematic cross-sectional view taken by line 4C-4C. Figure 4D is along Figure 4A A perspective view cut by line 4C-4C.

[0085] In the first embodiment, the conductive films 4 a and 4 b are arranged to face each other through the recess 1 a formed in the insulating substrate 1 . However, in the second embodiment, on the contrary, the conductive films 4a and 4b are arranged in the concave portion, and the opening portions of the conductive films 4a and 4b are arranged in a region adjacent to the concave portion 1a in the Y direction (in the area of ​​the substrate 1 on the surface). In this ...

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Abstract

The invention discloses an electron-emitting device and an image display apparatus. The image display apparatus uses electron-emitting devices each having: a pair of device electrodes on an insulating substrate; and an electroconductive film connecting the device electrodes. The insulating substrate has concave portions in a gap between the device electrodes. The film has opening portions having a first gap in a region adjacent to the opening portions along such a gap. A carbon film having a second gap is formed in the first gap and has extending portions extending from side surfaces of the concave portions toward the bottom. The extending portions of the adjacent carbon films are not coupled.

Description

technical field [0001] The present invention relates to an electron emission device and an image display device using the electron emission device. Background technique [0002] As the electron-emitting device, there are electron-emitting devices of a field emission type, a surface conduction type, and the like. [0003] As a step of forming a surface conduction type electron-emitting device in the prior art, first, a pair of device electrodes is formed on an insulating substrate. Subsequently, the pair of device electrodes are connected through a conductive film. By applying a voltage between the device electrodes, a process called "energization forming" is performed for forming a first gap in a part of the conductive film. The energization forming operation is a step of supplying electric current to the conductive film, and forming a first gap in a part of the conductive film by Joule heat generated by the current. By the energization forming operation, a pair of conduc...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01J1/316H01J29/04H01J31/12
CPCH01J9/027H01J31/127H01J2329/0489H01J2201/3165H01J1/316
Inventor 西田彰志糠信恒树森口拓人冢本健夫
Owner CANON KK
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