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Image display apparatus

一种图像显示设备、显示设备的技术，应用在图像/图形显示管、静态指示器、放电管冷阴极等方向，能够解决电子入射位置不同、亮度和颜色偏差、密闭容器翘曲等问题

Inactive Publication Date: 2006-07-05
CANON KK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, it has become clear that if each part expands and contracts differently, residual stresses can be generated in each part, thus causing the closed container to warp
Since the warp becomes larger as the display device becomes larger, it causes a new problem in some cases that the electron incident position of the electron beam is different from the desired position, and thus produces deviations in luminance and color

Method used

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Examples

Experimental program
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Effect test

Embodiment 1

[0060] Embodiments of the image display device of the present invention are described.

[0061] image 3 is a perspective view of an image display device. A portion of the device is cut away in order to show its internal structure. An enlarged sectional view of the sealed connection is shown in the lower dotted line. in accordance with image 3 , the image display device of the present embodiment has a housing 90 including a rear panel 81, a front panel 82 arranged opposite to the rear panel 81, and a bracket 86 supporting these panels. Many electron-emitting devices 87, which are surface-conduction electron-emitting devices here, are arranged in a matrix on the rear plate 81, and a pair of device electrodes in each of these surface-conduction electron-emitting devices 87 are respectively connected to Wire 88 and wire 89 in the Y direction. In the current embodiment, the X direction is the same as the horizontal (column) direction, and the Y direction is the same as the v...

Embodiment 2

[0087] The current embodiment is where such as Figure 12 The electrode shape shown is the case of an arc, and other structures in the present embodiment are the same as those in Embodiment 1. In this case, if, as described in Example 1, in the Y direction, in the Figure 12 Electron emission regions are formed at predetermined angular positions dy4-dy6 on the electrodes of Y4-Y6, and the initial velocity vector of the electron beam can be arbitrarily selected. That is, by forming the in-plane distribution at the position of the electron emission region, the electron beam incident position is brought to the correct position. Figure 13 is a graph showing the relationship between the angle between the reference plane and the normal and the shift of the position of the corresponding electron-emitting region in the case where the electrode radius Ry is 100 μm. By the method similar to Example 1, make Figure 13 China's relationship with Figure 9 Corresponding to the position...

Embodiment 3

[0089] In the current embodiment, the electrode angle is zero degrees over the entire surface of the image display device (opposite portions of a pair of device electrodes are parallel to the wires in the Y direction). However, the current embodiment brings the electron beam incident position to the correct position on the front plate by forming the in-plane distribution in the electron beam steering effect due to the matrix structure. The current embodiment will be described in detail below.

[0090] The rigid structure of the wire in the Y direction affects the horizontal electron incident distance dx of the electron beam. The main parameters of the wire in the Y direction are the distance xd from the electron source, and the wire height hd in the Y direction, and these parameters will affect the electron orbit. use Figure 17 To be specific, when the distance xd becomes smaller, the orbit of the electron beam changes from dx4 to dx3, for example, as if it pushes away the ...

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Abstract

A miss landing measure on a face plate of electrons emitted from electron-emitting devices by the warping of a rear plate and the face plate accompanying heat processes, such as seal bonding, is provided. Initial velocity vectors of electrons emitted from an electron-emitting area of an electron-emitting device formed on the rear plate has a distributed tendency according to an in-plain distribution of normal line directions of the rear plate so that the electrons emitted from each of the plurality of electron-emitting devices may irradiate each of the plurality of light emitting portions, corresponding to each of the electron-emitting devices, formed on the face plate.

Description

technical field [0001] The present invention relates to an image display apparatus in which electron-emitting devices are applied. Background technique [0002] In recent years, among image display devices using electron emission devices, flat panel displays have attracted attention as displays instead of cathode ray type display devices because flat panel display devices having a thin thickness can save space and light weight. [0003] This flat panel display device has a hermetic container formed by bonding a rear plate on which electron-emitting devices are mounted and a front plate on which light-emitting members (phosphors) that emit light by electron beam irradiation are mounted, and Between the rear panel and the front panel is placed a shelf member. To form an airtight container, a highly precise alignment is required between the rear and front panels. However, as the size of display devices has become larger, the occurrence frequency of misalignment has become hig...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01J31/12H01J1/30H01J29/02G09G3/22
CPCH01J31/127H01J2201/3165H01J1/316H01J1/30
Inventor 山户田武史久野光俊
Owner CANON KK
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