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Color separating hood for cathode ray tube

A technology of cathode ray tube and color selection cover, which is applied in the direction of cathode ray tube/electron beam tube, discharge tube, photoplate making process of pattern surface, etc. question

Inactive Publication Date: 2005-11-30
VIDEOCOLOR
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the structure of the damper used in this patent is complex
Also, its use itself is complicated because the device is installed after the cover has been fixed to the frame, thus complicating the process of manufacturing the tube with additional steps
In addition, it is not desirable to add elements to the surface of the cover after the cover has been subjected to tension, because the small thickness makes it extremely brittle, and it is easy to damage it by fixing the components on its surface

Method used

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  • Color separating hood for cathode ray tube
  • Color separating hood for cathode ray tube
  • Color separating hood for cathode ray tube

Examples

Experimental program
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Embodiment Construction

[0018] As shown in FIG. 1, a cathode ray tube 1 according to the present invention includes a substantially planar panel 2 and a skirt 3. As shown in FIG. The panel is connected to the funnel-shaped tail 4 of the ray tube by glass frit sealing. The tube end 5 surrounds the electron gun 6, and the electron beam from the electron gun passes through the color selection mask 8 to irradiate the phosphor screen 13 of the luminescent phosphor. In this case the cover 8 is planar and is tensioned between the long sides 9 of the frame 19 . The metal support of the frame / hood assembly supports this assembly inside the tube, the support consists of a part 10 welded to the frame and a part forming a spring 11 provided with through holes for cooperating with pins 12 contained in the glass skirt 3 .

[0019] exist figure 2 In the prior art example shown, the frame 19' comprises a pair of long sides 9' and a pair of short sides 7', the long and short sides having an L-shaped cross-section. ...

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Abstract

A color cathode-ray tube comprises a mask, intended for selecting the colors, which is tensioned on a support frame, the frame / mask assembly including means for preventing the tensioned mask from vibrating under the influence of external vibrations. These means comprise at least one mechanical oscillator, coupled to the mask, in the form of metal strips produced by partial cutting of the surface of the peripheral region of the mask.

Description

technical field [0001] This invention relates to color selection mask structures for use in color cathode ray tubes, and more particularly to mask structures designed to be held under tension in such tubes. Background technique [0002] The invention can be applied to any type of tube having a color selection mask, and is particularly applicable to tubes in which the mask is held in tension by means of a frame to which the mask is secured. [0003] A conventional cathode ray tube includes a color selection mask positioned at a precise distance inside the tube's glass panel on which an array of red, green and blue phosphors are deposited to form a phosphor screen. An electron gun located at the inner end of the tube produces three electron beams in the direction of the panel. Electromagnetic deflection means, usually located outside the tube and adjacent to the electron gun, have the function of deflecting the electron beams so that they scan the faceplate surface on which t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G03F1/16H01J29/07
CPCH01J2229/0744H01J29/07
Inventor F·伯顿
Owner VIDEOCOLOR