• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    1. METHOD FOR ASSEMBLING 3NEKTPOHHOj RADIATED PIPE by installing a bulb on a faceplate with a phosphor screen applied to its inner surface, lowering the electron-optical system with spring outlets into the neck of the tube and fixing it at a predetermined depth during the sealing of the neck with a distal pattern, with a subfloor pattern, which is attached to the desired depth, when using a spherical seal, with a flat pattern in the mouth of the tube and secured at a predetermined depth during the sealing of the neck, you can use the same pattern, with the same pattern, you can use the same way. reliability of the tube. by reducing damage to the inner surface of the neck during assembly, before lowering the electron-optical system on the inner surface of the neck over the entire length of contact with n uzhinnmi pacnoptcai «i applied to the film an aqueous solution of polyvinyl alcohol and, after securing an electron-optical system of the neck tube is heated in air to 335-400 C and complete evaporation of the film. 2. A method according to claim 1, characterized in that the application of the film O) of polyvinyl alcohol is carried out by immersing the neck of the tube in its aqueous solution with a concentration of 0.1-1.0 wt.% And subsequent drying.
    公开号:SU1122240A3
    申请号:SU772523444
    申请日:1977-09-19
    公开日:1984-10-30
    发明作者:Ибрахим Нубани Джавдат；Роберт Рисц Уолтер
    申请人:Рка Корпорейшн (Фирма)；
    IPC主号:
    专利说明:

    11 The invention relates to electronic engineering and can be used in the production of electron-beam devices, such as picture tubes. A known method for assembling cathode ray tubes (CRTs), according to which the screen assembly, the front panel and the socket are assembled, mount the electro-optical system (EOS) in the neck of the tube and fix it. The EOS is assembled, like the npa-f wedge, onto glass insulating glasses and is provided in the ready for fixing form with clamps in struts that define the required position of the EOS in the throat of a CRT. The composition of the finished unit may also include a container with a getter attached to the barrel of another flat spring that holds the container on the inside of the socket. Most of the inner surface of the bell is covered with an electrically conductive coating, and part of the neck can be covered with another protective coating lj. The disadvantage of this method is a decrease in the yield of products due to the violation of the internal coatings of the flask during assembly. The closest in technical essence to the present invention is a method for assembling a cathode ray tube by placing a bulb on a face panel with a phosphor screen deposited on its inner surface, lowering an electron-optical system with spring struts into the tube neck and fixing it at a predetermined depth during sealing heads of 2D. The finished EOS assembly is manually inserted from the open end of the neck, oriented relative to the shield of the tube, and pushed inside the neck to the required depth. At the same time, the spring struts slide at first along the non-constricted surface of the neck, and then over the inner coating of the socket. During this assembly step, tearing out of the glass particles and the inner surface of the pipe can occur, as well as the formation of minor scratches. These conductive particles can subsequently create an electrical sample when the tube is assembled, and non-conductive particles can accumulate electrical charges that create localized electrically-depleting electrostatic fields. Coin 0 pins on the glass can lead to cracking of the CRT. - improving the reliability of the tube by reducing damage to the internal surface of the neck during assembly. This goal is achieved by the fact that according to the method of assembly, the ELT path. Installing the flask on the front panel with a luminaire screen deposited on its inner surface, placing an EOS with spring struts in the mouth of the tube and fixing it at a predetermined depth when sealing the neck before applying the EOS to the inner surface of the neck with the entire length of contact with the spring braces apply the film an aqueous solution of polyvinyl alcohol5 and after fixing the EOS, the neck of the tube is heated in air to 335–40 ° C and the film completely evaporated. The film can be applied by immersing the tube neck in a water solution of polyvinyl alcohol with a concentration of 0.11, 0 wt.% And subsequent drying. The assembly of a CRT in accordance with this method is carried out as follows. A phosphor screen is made on the inner surface of the faceplate, for example, for CRT color imaging by means of a photoreferencing technique. The inner surface of the socket and part of the neck welded to it selectively, is covered with an electrically conductive surface, for example, based on graphite, iron oxide, and a silicate binder. Then the front panel is welded to the socket. After that, the application is carried out. polyvinyl alcohol film on the inner surface of the neck. Immersion in its aqueous solution at a certain depth is determined by the required length of contact of the spring struts with the surface of the neck. The dive time is usually about 10 seconds. The throat is removed from the solution and allowed to drain to excess under its own weight. The film is air-dried until solid. However, an accelerated hot nipple can be used for acceleration. After the film has been formed, the flask is placed on the front panel (or, in the neck of the CRT, the finished EO unit is inserted and oriented with the help of a downtre on the screen. At the same time, the unit is lowered into the neck to a predetermined depth. At the same time, the spring spacers slide along the applied polyvinyl film alcohol and do not cause any damage to the glass or electrically conductive coating. After that, the EOS is fixed in a predetermined position by welding (sealing) to the neck of the glass flange. Lenka by heating the neck in air to 335–40 ° C. The film evaporates and the resulting gases escape. The upper temperature limit is determined by the maximum heating level for the selected film material, and the lower by obtaining the necessary film quality for a relatively short heating time. It has also been experimentally shown that the concentration of polyvinyl alcohol below 0.1% by weight of an aqueous solution is not sufficiently effective to protect the cTeK-lip surface, and that a concentration above 1% by weight will not provide sufficiently fast th drying and can facilitate the formation of residues in the form of ash. In all cases, it is advisable to reduce the amount of vaporized material and the amount of residues. The evaporation of the film can be combined with the general drying of a CRT flask and air evacuation or with the step of securing the EOS node in the neck. 0 After evaporation of the film, the CRT assembly process ends. It has been shown that during the last operation, a smaller number (statically) of sparks and arc Bbtx bits was observed in the CRT assembled by this method than in a CRT without intermediate coating of the neck. As a result, the overall reliability of the CRT and the yield of products are improved. Example. After the CRT flask is assembled, a film of an aqueous solution of polyvinyl alcohol with a concentration of 0.5 wt.% Is applied to the inner surface of the neck of the flask. This operation is performed by lowering the neck in the tank with the solution to a depth corresponding to the length of the surface contact with the EOS spring struts for 10 s. Next, the flask is removed from the tank, allowed to drain an excess of the solution under its own weight, and the resulting frit is dried in air or by hot blasting. The flask prepared in this way is turned over to the front panel, and the ready-made EOS node is lowered into the neck to the required depth. EOS is fixed inside the neck when it is sealed and proceeds to the film removal stage, dp of which the tube is heated to 360 ° C and kept in this state for 5-6 minutes. During the final operations, the tube is electrically treated and, after pumping out the gases, is sealed permanently.
    权利要求:
    Claims (2)
    [1]
    1. METHOD OF ASSEMBLY ELECTRONICALLY BEAM TUBE by installing the bulb on the front panel with a phosphor screen deposited on its inner surface, lowering the electron-optical system with spring struts into the neck of the tube and securing it to a predetermined depth when sealing the neck, characterized in that, in order to increase the reliability of the tube by reduce damage to the inner surface of the neck during assembly, before lowering the electron-optical system on the inner surface of the neck over the entire length of contact with the spring struts film an aqueous solution of polyvinyl alcohol, and after fixing the electron-optical system of the neck tube is heated in air to 335-400 C and complete evaporation of the film.
    [2]
    2. The method of pop. 1, it is distinguished by the fact that the film of polyvinyl alcohol is applied by immersing the neck of the tube in its aqueous solution with a concentration of 0.1-1.0 wt.% And subsequent drying.
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    类似技术:
    公开号 | 公开日 | 专利标题
    SU1122240A3|1984-10-30|Method of assembling cathode-ray tube
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    US2871087A|1959-01-27|Method of assembling a color television tube
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    US3984589A|1976-10-05|Method of manufacturing a low pressure mercury vapor discharge lamp
    KR930007123B1|1993-07-30|Method of painting a graphite of crt
    US2554257A|1951-05-22|Protection of phosphors from attack by alkali vapors
    JP2947883B2|1999-09-13|Getter flash method for electron tube
    US2198650A|1940-04-30|Photoelectric tube
    同族专利:
    公开号 | 公开日
    DE2742751A1|1978-03-23|
    FR2365875A1|1978-04-21|
    MX145790A|1982-04-02|
    CS199710B2|1980-07-31|
    IT1087355B|1985-06-04|
    JPS583574B2|1983-01-21|
    PL113206B1|1980-11-29|
    GB1585605A|1981-03-11|
    BR7706258A|1978-07-04|
    CA1080789A|1980-07-01|
    FR2365875B1|1980-05-16|
    US4031597A|1977-06-28|
    PL200992A1|1978-04-24|
    JPS5339056A|1978-04-10|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    US3573950A|1968-09-27|1971-04-06|Corning Glass Works|Protective coating of glass surface|JPS6315696B2|1977-12-09|1988-04-06|Sony Corp|
    DE3511211A1|1985-03-28|1986-10-09|Standard Elektrik Lorenz Ag, 7000 Stuttgart|COLOR IMAGE TUBES WITH AN INNER CONDUCTIVE LAYER AND METHOD FOR PRODUCING THE COLOR IMAGE TUBES|
    JPS6143676U|1985-07-15|1986-03-22|
    FR2622051B1|1987-10-16|1995-02-17|Videocolor|DEVICE FOR GRAPHITATING THE NECK IN CONES OF CATHODE RAY TUBES|
    JP3211388B2|1992-07-23|2001-09-25|ソニー株式会社|Stray light detection system|
    JPH08247678A|1995-03-10|1996-09-27|Nagano Haruo|Heat-exchanger made of aluminum|
    JP2710225B2|1995-03-15|1998-02-10|株式会社東芝|Heat exchanger for condenser|
    US5807154A|1995-12-21|1998-09-15|Micron Display Technology, Inc.|Process for aligning and sealing field emission displays|
    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    US05/725,583|US4031597A|1976-09-22|1976-09-22|Method of assembling a mount assembly in the neck of a cathode-ray tube|
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