KR960012204A - How to make shadow mask of CRT - Google Patents

How to make shadow mask of CRT Download PDF

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Publication number
KR960012204A
KR960012204A KR1019940023472A KR19940023472A KR960012204A KR 960012204 A KR960012204 A KR 960012204A KR 1019940023472 A KR1019940023472 A KR 1019940023472A KR 19940023472 A KR19940023472 A KR 19940023472A KR 960012204 A KR960012204 A KR 960012204A
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KR
South Korea
Prior art keywords
shadow mask
bent portion
present
electron beam
crt
Prior art date
Application number
KR1019940023472A
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Korean (ko)
Other versions
KR0164884B1 (en
Inventor
황희원
Original Assignee
엄길용
오리온전기 주식회사
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Publication date
Application filed by 엄길용, 오리온전기 주식회사 filed Critical 엄길용
Priority to KR1019940023472A priority Critical patent/KR0164884B1/en
Publication of KR960012204A publication Critical patent/KR960012204A/en
Application granted granted Critical
Publication of KR0164884B1 publication Critical patent/KR0164884B1/en

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J9/00—Apparatus or processes specially adapted for the manufacture, installation, removal, maintenance of electric discharge tubes, discharge lamps, or parts thereof; Recovery of material from discharge tubes or lamps
    • H01J9/02—Manufacture of electrodes or electrode systems
    • H01J9/14—Manufacture of electrodes or electrode systems of non-emitting electrodes
    • H01J9/142—Manufacture of electrodes or electrode systems of non-emitting electrodes of shadow-masks for colour television tubes

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  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Electrodes For Cathode-Ray Tubes (AREA)

Abstract

본 발명은 브라운관의 판넬내면에 장착되어 잔자총에서 주사된 전자빔을 소망하는 형광면에 랜딩시키는 새도우마스크에 관한 것이다.The present invention relates to a shadow mask mounted on a panel inner surface of a CRT and landing an electron beam scanned from a residual gun on a desired fluorescent surface.

종래의 새도우마스크는 제1도에 도시된 바와 같이 열팽창계수가 극히 적은 인바아재질의 새도우마스크(S)를 제작,사용해왔으나, 이 인바아재로 새도우마스크(S)를 형성하였을 시에는 이 재질의 매우 높은 탄성강도로 인하여 절곡부(10)에 대한 포밍(forming)작업이 종료된 후에도 가상선과 같이 포밍전의 상태로 복귀하려는 스프링백(spring back)현상이 극히 높아 새도우마스크(S)의 제작불량이 속출하는 문제점이 있었다.Conventional shadow mask has been produced and used the shadow mask (S) of the invar material having a very low coefficient of thermal expansion as shown in Figure 1, when the shadow mask (S) is formed of this invar material Due to the very high elastic strength, the spring back phenomenon is extremely high to return to the state before forming like a virtual line even after the forming of the bent portion 10 is completed. There was an issue that went on.

따라서, 본 발명의 목적은 이러한 종래의 문제점을 감안하여 안출한 것으로서, 복수의 전자빔통과공이 천공된 인바아재질의 평판마스크주변의 절곡부만을 소정시간 열처리하여 소성시킨 다음, 이 절곡부를 프레스장치로 포밍가공함으로써, 전술한 절곡부의 스프링백현상으로 인한 새도우마스크의 불량을 극소화시킨 브라운관의 새도우마스크제작방법을 제공함에 있다.Therefore, an object of the present invention is devised in view of the above-described conventional problems, and heats only a bent portion around a flat plate mask of an in-bar material in which a plurality of electron beam through holes are perforated for a predetermined time, and then fires the bent portion with a press apparatus. The present invention provides a method for producing a shadow mask of a CRT tube by minimizing the defect of the shadow mask due to the spring back phenomenon of the bent portion.

이와 같은 목적을 달성하기 위하여 본 발명은 복수의 전자빔통과공이 천공된 평판마스크를 형성한 다음, 이 주변의 절곡부에 해당되는 부분을 약 700도에서 800도 사이로 열처리하되, 이 열처리를 약 20분에서 40분정도 실시하는 한편, 전술한 절곡부의 열처리가 종료됨과 동시에 이 부분을 프레스장치로 포밍가공하여서 된 것이다.In order to achieve the above object, the present invention forms a flat plate perforated with a plurality of electron beam through holes, and then heat-treat the portion corresponding to the bent portion at about 700 to 800 degrees, and the heat treatment is performed for about 20 minutes. After about 40 minutes at the same time, the heat treatment of the above-mentioned bent portion is finished, and this portion is formed by pressing with a press apparatus.

Description

브라운관의 새도우마스크제작방법How to make shadow mask of CRT

본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음As this is a public information case, the full text was not included.

제2도는 본 발명에 따른 평판마스크의 평면도.2 is a plan view of a flat plate mask according to the present invention.

제3도는 본 발명에 따른 새도우마스크의 요부측단면도.Figure 3 is a main cross-sectional side view of the shadow mask according to the present invention.

Claims (2)

복수의 전자빔통과공(2)이 천공되면서 탄성강도가 높은 인바아재질로 된 평판마스크(1)주변, 즉 프레스장치(미도시)에 의해 꺽여지는 절곡부(10)를 소정시간 고온으로 소성시킨 다음, 상기 절곡부(10)를 프레스장치로 포밍가공하는 것을 특징으로 한 브라운관의 새도우마스크제작방법.As the plurality of electron beam through holes 2 are drilled, the plate mask 1, which is made of an in-var material having high elastic strength, is fired at a high temperature for a predetermined time, that is, the bent portion 10 that is bent by a press device (not shown). And then forming the bent portion (10) with a press device to produce a shadow mask of the CRT. 제1항에 있어서, 상기한 절곡부(10)에 소정시간 열처리가공하되, 상기 절곡부(10)를 약 700- 800도 사이에서 20분- 40분동안 열처리하는 것을 특징으로 한 브라운관의 새도우마스크제작방법.The shadow mask of claim 1, wherein the bent portion 10 is heat-treated for a predetermined time, and the bent portion 10 is heat treated for about 20 to 40 minutes between about 700 to 800 degrees. How to make. ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR1019940023472A 1994-09-15 1994-09-15 Cathode ray tube KR0164884B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1019940023472A KR0164884B1 (en) 1994-09-15 1994-09-15 Cathode ray tube

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1019940023472A KR0164884B1 (en) 1994-09-15 1994-09-15 Cathode ray tube

Publications (2)

Publication Number Publication Date
KR960012204A true KR960012204A (en) 1996-04-20
KR0164884B1 KR0164884B1 (en) 1998-12-15

Family

ID=19392939

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1019940023472A KR0164884B1 (en) 1994-09-15 1994-09-15 Cathode ray tube

Country Status (1)

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KR (1) KR0164884B1 (en)

Also Published As

Publication number Publication date
KR0164884B1 (en) 1998-12-15

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