Indium seal type luminescent screen, and technique for preparing the display tube of using the luminescent screen

A preparation process and fluorescent screen technology, applied in the manufacture of discharge tubes/lamps, tubes/lamp screens, discharge tubes, etc., can solve the problems of low stability, difficult operation, low glass sealing leakage, etc., and achieve high stability Sex and service life, saving time and cost, and stable product performance

Active Publication Date: 2007-05-09
SICHUAN TIANWEI ELECTRONICS
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Problems solved by technology

[0002] The fluorescent screen of the existing image tube is sealed with metal materials with low glass powder, which has the following disadvantages: firstly, corresponding treatment needs to be carried out on the corresponding metal materials, such as burning hydrogen, roughening, etc., the procedure is complicated, and sealing The temperature is strictly controlled, the requirements for the process conditions are relatively high, and it is not easy to operate;

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  • Indium seal type luminescent screen, and technique for preparing the display tube of using the luminescent screen
  • Indium seal type luminescent screen, and technique for preparing the display tube of using the luminescent screen
  • Indium seal type luminescent screen, and technique for preparing the display tube of using the luminescent screen

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Embodiment Construction

[0014] The present invention will be described in detail below in conjunction with the accompanying drawings.

[0015] As shown in Figure 1, in the prior art, the optical fiber panel 1 (fluorescent screen) of the tube and the metal part 2 are sealed with low glass powder. 2 underside. The process procedure is as follows: 1. Coat metal parts with low glass powder, dry at room temperature for more than 10 hours, then melt, and the temperature rises to above 300 degrees within 30 minutes, and then lowers to room temperature for use; 2. Sealing, slow down first. Heat up quickly, then quickly heat up to 450 degrees, and then cool down naturally. Its important disadvantages are the complex process, strict temperature requirements, and the product cannot withstand the stress change of heat conduction and is prone to air leakage, etc., which will not be repeated here.

[0016] Fig. 2 is a schematic structural view of the indium-sealed phosphor screen provided by the present inventio...

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Abstract

The indium seal type fluorescent screen includes optical fiber faceplate and metal seal ring. Characters are that groove for filling indium is setup on the metal seal ring; clip body is setup on edge of the optical fiber faceplate; through indium solder filled inside the groove, the clip body is connected and sealed to the metal seal ring. Procedure for preparing image tube of using the fluorescent screen includes steps: fabricating metal seal ring; molding optical fiber faceplate, and process for metallizing the clip body; filling indium into the groove on the ring; sealing faceplate and the ring by using indium; fusion welding the indium-sealed ring of the faceplate and shell of tube so as to form the shell of tube, which is sealed to light cathode. Advantages are: cold and heat shock resistance, high intensity mechanical shock resistant, higher stability and service life, carrying out sealing light cathode and shell of tube at same time so as to simplify technical procedure.

Description

technical field [0001] The invention relates to a photoelectric vacuum device, in particular to an indium-sealed fluorescent screen of a picture tube and a preparation process of a picture tube using the fluorescent screen. Background technique [0002] The fluorescent screen of the existing image tube is sealed with metal materials with low glass powder, which has the following disadvantages: firstly, corresponding treatment needs to be carried out on the corresponding metal materials, such as burning hydrogen, roughening, etc., the procedure is complicated, and sealing The temperature is strictly controlled, the requirements for the process conditions are relatively high, and it is not easy to operate; secondly, the product quality is not high, and the high storage, low storage, high and low temperature cycles and stress tests show that the performance in adapting to environmental conditions is not high; thirdly, the original During the soldering process, the phosphor scre...

Claims

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Application Information

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IPC IPC(8): H01J29/10H01J29/36H01J29/18H01J9/20H01J9/26H01J9/385H01J9/00
Inventor 巨万里于海波马建华
Owner SICHUAN TIANWEI ELECTRONICS
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