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Colour-seleeting electrode measuring device and colour-selecting electrode measuring method using the same apparatus

A measuring device and electrode technology, which is applied in the direction of measuring device, non-luminous electrode manufacturing, measurement/testing in the manufacturing process, etc., can solve problems such as increased operating costs

Inactive Publication Date: 2004-04-07
MITSUBISHI ELECTRIC CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Therefore, when the installation position of the panel pin in the panel deviates from the design value, there is a problem that the interval Q also deviates by that much
[0010] In addition, since the measuring contact is a consumable part, using an expensive alloy of silver and tungsten as the conductive material of the front end will raise the problem of operating costs.

Method used

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  • Colour-seleeting electrode measuring device and colour-selecting electrode measuring method using the same apparatus
  • Colour-seleeting electrode measuring device and colour-selecting electrode measuring method using the same apparatus
  • Colour-seleeting electrode measuring device and colour-selecting electrode measuring method using the same apparatus

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Embodiment 1

[0021] figure 1 2 is a plan view and a cross-sectional view showing the color selection electrode measuring device 100 according to Embodiment 1 of the present invention. Such as image 3 and Figure 4 As shown, the color selection electrode 1 measured by the color selection electrode measurement device 100 is spaced apart by combining the panel pins 14-17 bonded to the panel 9 and the color selection electrode support members 10-13 bonded to the color selection electrode. The Q ground is embedded in the panel 9 . A plane is formed by the color selection electrode supporting members 10-13. If the distance from the plane to the inside of the panel 9 is H2, the distance from the plane to the color selection electrode substrate surface 2 inside the color selection electrode 1 is H1. , then by calculating H1 and H2, subtracting H1 from H2, Q can be calculated.

[0022] Figure 5 It is a diagram showing the positional relationship of components of a color cathode ray tube. If...

Embodiment 2

[0032] FIG. 7 is a diagram showing the operation of the color selection electrode height measuring unit 6 according to the second embodiment of the present invention.

[0033]The color selection electrode height measuring unit 6 includes a measuring contact movement detection unit not shown in the figure, which is composed of a measuring contact 20 and a magnetic linear scale. The measuring contact 20 is moved in the z direction by a pulse motor at a low speed, and contacts the inner color selection electrode base surface 2 of the color selection electrode 1 . Since a weak voltage is applied to the measuring contact 20, and the color selection electrode 1 is grounded through the color selection electrode support point 3, the movement is stopped through contact electrical conduction. The height of the color selection electrode base surface 2 can be measured by detecting this movement amount by the measuring contact movement amount detection means.

[0034] The front end portio...

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PUM

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Abstract

Provided is a color selection electrode measuring device in which even when the position of a panel pin mounted on a panel is shifted from a design value, the shift of a space between the panel and the color selection electrode can be made smaller, and a color selection electrode measuring method using the same. In the color selection electrode measuring device (100), a color selection electrode-height measuring means (6) for measuring the height of the color selection electrode element face (2) is arranged on moving actuators (7, 8), and can move in an xy plane. By calculating the shift ([Delta]X, [Delta]Y and [Delta]Z) between the center of gravity of the position coordinates of the panel pins (14-17) and the center of gravity of design coordinates, and after moving the color selection electrode-height measuring means (6) by the movable actuators (7, 8), by ([Delta]X, [Delta]Y) in the xy plane, the height of the color selection electrode element face (2) is measured.

Description

technical field [0001] This invention relates to cathode ray tubes, and more particularly to the measurement of color selection electrodes for color cathode ray tubes. Background technique [0002] The structure of a conventional conventional color cathode ray tube will be described. The color cathode ray tube includes: a panel having a phosphor surface corresponding to phosphors of three colors R, G, and B, an electron gun emitting electron beams corresponding to three colors of R, G, and B, having a predetermined curvature and picking the electron beams to the phosphor surface Color selection electrodes at predetermined positions. Phosphor is applied to the inside of the panel. The color selection electrode is separated from the panel by a predetermined interval Q, and is installed inside the panel through an elastic color selection electrode support member, and opens a slit for the passage of electron beams. The surface inside the opening slit in the color selection el...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01J9/42G01B21/00H01J9/14
Inventor 松永泰彦河嵜贵文西野裕久筒井一就大江慎一绵贯晴夫牧野惠三水本善雄三村诚一
Owner MITSUBISHI ELECTRIC CORP