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Electronic wire device

An electronic wire and electronic technology, applied in the direction of electrode devices and related components, circuits, cathode ray tubes/electron beam tubes, etc., can solve the problems of lowering the quality of displayed images and insufficient effects

Inactive Publication Date: 2004-05-19
CANON KK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0012] However, when the pitch of the electron emission elements is narrowed for the purpose of high-definition display devices, the effect is not sufficient, and a small amount of beam deviation, which has not been a problem in the past, may degrade the display image quality.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] exist figure 1 The cross section of the image display device of this embodiment is shown in figure 2 A potential regulating plate (hereinafter referred to as a gate) is shown in . exist figure 1 and figure 2 Among them, 11 is a rear plate on which electron emission elements are arranged in a matrix, 12 is an electron emission part of the electron emission elements, 15 is a grid, 16 is an insulating spacer, and 17 is a phosphor and a metal plate (not shown). On the back panel, 20 is an electron beam track, and 21 is an electron passage port. Again, for figure 2 For the grid 15, the size in the thickness direction is exaggerated for easy understanding. The spacer 16 is composed of two spacer parts, a panel-side spacer and a rear-side spacer, and has a structure in which the grid 15 is sandwiched between an upper spacer and a lower spacer.

[0041]Although not used in this embodiment, an antistatic film (high-resistance film) may be provided on the surface of the ...

Embodiment 2

[0073] exist image 3 The cross section of the image display device of this embodiment is shown in Figure 4 The gate is shown in . The difference from Embodiment 1 lies in the structure in the thickness direction of the gate. However, the same method as in Example 1 can be used as a manufacturing method.

[0074] As a concrete structure such as image 3 , Figure 4 As shown in , by thickening the side of the opening closest to the spacer in the grid 15 (the part between the opening of the grid close to the spacer and the opening not close to the spacer) The thickness of a part of the grid is such that it protrudes 0.1mm in the direction of the rear plate, so that the distance (D3) between the opening of the gate and the spacer and the electron emission element is closer than that of the grid close to the spacer The distance (D4) between the opening and the opening not close to the spacer and the electron emission element is large (D3>D4), so that the electric field near ...

Embodiment 3

[0080] exist Figure 5 A cross section of the image display device of this embodiment is shown in . The gate electrode of this example is a combination of Example 1 and Example 2, and can be manufactured by the same method as that of Example 1 and Example 2.

[0081] Specifically, as Figure 5 As shown in , by making the thickness of the junction of the spacer in the grid 15 thicker by 0.05 mm so as to protrude in the direction of the panel, and making the spacer in the grid 15 closest to the opening (slit) of the spacer The thickness of a part of the far side (the part between the opening of the grid close to the partition and the opening not close to the partition) is thickened by 0.05mm so as to protrude in the direction of the rear plate, so that the grid is close to The distance (D1) between the opening of the spacer and the part between the spacer and the phosphor is smaller than the distance (D2) between the opening of the grid close to the spacer and the opening not ...

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Abstract

In an electron beam apparatus including an electron source and an electron beam irradiation member, a potential specifying plate including openings through which an electron transmits is provided between the electron source and the electron beam irradiation member. A spacer is located between the electron beam irradiation member and the potential specifying plate. In the case where a distance between a region between one of the openings of the potential specifying plate which is near the spacer and the spacer and the electron beam irradiation member is given by D1 and a distance between a region between the one opening of the potential specifying plate which is near the spacer and another opening thereof which is not near the spacer and the electron beam irradiation member is given by D2, if D1<D2 is satisfied, a deviation of an orbit of an electron beam emitted from the electron source is suppressed, so that it is possible to produce a high quality image.

Description

technical field [0001] The present invention relates to an electron wire device typified by an image forming device such as an image display device. Background technique [0002] Conventionally, two types of electron emission elements, namely, a thermal electron source and a cold cathode electron source, are known. In the cold cathode electron source, there are electric field emission elements (hereinafter referred to as FE elements), metal / insulating layer / metal elements (hereinafter referred to as MIM elements), and surface conduction electron emission elements (hereinafter referred to as SCE elements), etc. . [0003] The inventors conducted research on a flat-panel image display device as an application of an electron source in which a plurality of the above-described electron-emitting elements are arrayed. In such an image display device using a thin case, a spacer is sometimes used as an atmospheric pressure-resistant supporting structure. The partition plate can re...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01J29/87H01J1/30H01J1/62H01J29/00H01J29/02H01J29/46H01J31/12H01J63/04
CPCH01J29/46H01J31/127H01J2329/8625H01J29/028H01J1/30
Inventor 安藤洋一
Owner CANON KK