Releasing gas test apparatus and method

Abstract

The invention provides a releasing gas test apparatus, which comprises a releasing gas sampling device, a tested gas quantitative sampling device, a releasing gas detection device and a vacuum degree monitoring device, wherein the releasing gas sampling device is connected with an external releasing gas source, the releasing gas sampling device and the tested gas quantitative sampling device are connected and controlled through a valve, and the releasing gas detection device and the tested gas quantitative sampling device are connected. The invention further provides a method for carrying out a releasing gas test by using the test apparatus. The method comprises: S1, preparing a test system background vacuum source and sampling releasing gas; S2, introducing the releasing gas sample into the background vacuum source; and S3, testing the releasing gas sample in the background vacuum source, wherein a vacuum degree of the background vacuum source is monitored through the vacuum degree monitoring device and must be stabilized to less than 1*10<-5> Pa. With the present invention, the releasing gas introduced into the background vacuum source can be subjected to reliable characteristic analysis, the operation is simple, and the judgment is rapid.

Description

technical field [0001] The invention relates to the field of gas analysis, in particular to a release gas testing device and method. Background technique [0002] During product development and specific applications, it is often necessary to monitor the properties of materials used in products, especially in the field of plasma TVs. Plasma TV is a display technology that uses gas discharge. It uses plasma tubes as light-emitting elements. Each plasma tube on the screen corresponds to a pixel. Each discharge space is formed, and the inner surface of the two glass substrates is coated with a metal oxide conductive film as an excitation electrode. Therefore, when a voltage is applied to the electrodes, the mixed gas in the discharge space will produce a plasma discharge phenomenon. The gas plasma discharge generates ultraviolet rays, which excite the fluorescent screen, and the fluorescent screen emits visible light to display images. Because the fluorescent powder is used ...

AI Technical Summary

Problems solved by technology

[0003] In the application of materials, especially new materials, the chemical analysis method is too cumbersome, and the use of chemical preparations will inevitably cause environmental pollution. Sometimes, destructive direct sampling must be carried out for testing needs, that is, sampling of broken products

However, for plasma display devices, especially for the recovery detection and analysis of defective products in the market, it is impossible to destructively sample plasma display devices. , analysis and research on storage conditions, optimal selection of phosphor sintering conditions and sealing time, research on temperature process optimization, analysis and countermeasures for residual image defects, verification of new materials and new processes when they are introduced, and mass production Semi-finished product storage time, storage conditions, optimization of possible storage processes, etc., all require simple operation and quick judgment test methods and devices

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