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Testing device for barium film air-breathing capability of getter in kinescope

A capability testing and testing device technology, applied in the direction of measurement/testing in the manufacturing process, can solve problems such as the decline in the ability of emitting electrons, poor cathode emission, and faded contrast, and achieve the effect of fast information feedback

Inactive Publication Date: 2007-07-04
SHANGHAI NOVEL COLOR PICTURE TUBE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The color picture tube is the core component of the TV, and the cathode is the "heart" of the color picture tube. The decline of its ability to emit electrons will cause the brightness of the image to decrease, the contrast will fade, and the clarity will deteriorate, which will eventually lead to "end of life", that is, failure
Studies have shown that poor cathode emission is often caused by cathode poisoning and sputtering due to the drop in vacuum in the tube.

Method used

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  • Testing device for barium film air-breathing capability of getter in kinescope
  • Testing device for barium film air-breathing capability of getter in kinescope
  • Testing device for barium film air-breathing capability of getter in kinescope

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Embodiment Construction

[0032] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0033] Fig. 1 shows the test device of the barium film getter performance of the present invention. As shown in FIG. 1 , the sampling system is mainly composed of a picture tube 7 to be tested, a sampling glass tube 12 and a breaking hammer 9 . In the present invention, the tested picture tube 7 is not a blank glass tube, but a finished color picture tube. Please refer to FIG. 2 again, a pit 40 is drilled at a certain position of the cone of the tested color display tube, the diameter of the pit 40 is 6mm, and the remaining wall thickness is 0.5mm. A section of sampling glass tube 12 is bonded around the pit 40 with low vapor pressure epoxy resin sealant 11 . A breaking hammer 9 is also placed in the sampling glass tube 12, and the breaking hammer 9 is made of ferromagnetic material, and the cone is arranged downward. Returning to Fig. 1, there is a ...

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Abstract

The invention discloses a display tube inner inspiratory solution barium membrane inspiratory capacity test device and method, its technical programs installations include sampling system, common gas coefficient tester, inlet pressure-measuring instrument, testing data automatic processing system, the ultra-high spectrometry analysis and exhaust system and test gas supply, storage and steady-pressure system; testing method including pretreatment, residual gas analysis, charging CO gas, measuring tube inlet pressure and the tube-inner pressure, calculating inspiratory rate and inspiratory capacity. This invention uses finished product colorful display tube as measured container, the CRT electron gun as the sensor to measure the vacuum rate in the tube. This invention is applied to accurate, convenient, and rapid test for the colorful display tube inner inspiratory solution barium membrane inspiratory capacity.

Description

technical field [0001] The invention relates to a test device and a method in the manufacturing process of a color picture tube, in particular to a test device and a method for the test device and method of the getter barium film in the color picture tube. Background technique [0002] The color picture tube is the core component of the TV, and the cathode is the "heart" of the color picture tube. The decline of its ability to emit electrons will cause the brightness of the image to decrease, the contrast will fade, and the clarity will deteriorate, which will eventually lead to "end of life", that is, failure . Studies have shown that poor cathode emission is often caused by cathode poisoning and sputtering due to the drop in vacuum in the tube. The vacuum state in the finished picture tube is "quasi-static", and the vacuum degree in the tube depends not only on the vacuum degree of sealing, the outgassing of the materials in the tube, but also on the suction capacity of t...

Claims

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Application Information

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IPC IPC(8): H01J9/42
Inventor 钱永生孙公方
Owner SHANGHAI NOVEL COLOR PICTURE TUBE
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