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KR100229314B1 - Inner shield fixing device of flat color CRT - Google Patents

Inner shield fixing device of flat color CRT Download PDF

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Publication number
KR100229314B1
KR100229314B1 KR1019960057313A KR19960057313A KR100229314B1 KR 100229314 B1 KR100229314 B1 KR 100229314B1 KR 1019960057313 A KR1019960057313 A KR 1019960057313A KR 19960057313 A KR19960057313 A KR 19960057313A KR 100229314 B1 KR100229314 B1 KR 100229314B1
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KR
South Korea
Prior art keywords
inner shield
support frame
fixing device
panel
coupled
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Legal status (The legal status 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 status listed.)
Expired - Fee Related
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KR1019960057313A
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Korean (ko)
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KR19980038414A (en
Inventor
박재규
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구자홍
엘지전자주식회사
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Priority to KR1019960057313A priority Critical patent/KR100229314B1/en
Priority to US08/959,728 priority patent/US6005341A/en
Priority to GB9722876A priority patent/GB2318906B/en
Priority to JP30004797A priority patent/JP3275071B2/en
Publication of KR19980038414A publication Critical patent/KR19980038414A/en
Application granted granted Critical
Publication of KR100229314B1 publication Critical patent/KR100229314B1/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01JELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J29/00Details of cathode-ray tubes or of electron-beam tubes of the types covered by group H01J31/00
    • H01J29/003Arrangements for eliminating unwanted electromagnetic effects, e.g. demagnetisation arrangements, shielding coils
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01JELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J2229/00Details of cathode ray tubes or electron beam tubes
    • H01J2229/863Passive shielding means associated with the vessel
    • H01J2229/8634Magnetic shielding

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  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Electrodes For Cathode-Ray Tubes (AREA)

Abstract

본 발명은 평면 칼라 브라운관의 인너쉴드 고정장치에 관한 것으로, 특히 이너쉴드 고정장치는 인너쉴드와 지지프레임의 용접성을 향상시키고, 크롬보다 투자율이 높은 니켈을 도금함으로서 외부자계의 영향에 의한 색순도 저하를 감소시킬 수 있도록 하는데 목적이 있다.The present invention relates to an inner shield fixing device of a flat color CRT. In particular, the inner shield fixing device improves the weldability of the inner shield and the support frame, and reduces the color purity due to the influence of an external magnetic field by plating nickel having a higher permeability than chromium. The purpose is to make it possible to reduce.

이를 실현하기 위하여 본 발명은 인너쉴드가 결합되는 지지프레임 표면에 니켈을 도금하여 형성시키는 것이다.In order to realize this, the present invention is formed by plating nickel on the surface of the support frame to which the inner shield is coupled.

Description

평면칼라 브라운관의 인너쉴드 고정장치Inner shield fixing device of flat color CRT

본 발명은 평면 칼라 브라운관에 관한 것으로서, 특히 브라운관내의 전자빔에 미치는 외부자계의 영향을 차폐해주기위하여 장착되는 인너쉴드 지지장치에 관한 것이다.BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to flat color CRTs, and more particularly to an inner shield support device mounted to shield the influence of an external magnetic field on an electron beam in the CRT.

일반적으로 평면 브라운관은 제1도에 도시된 바와같이 내측면에 R,G,B의 형광면(9)이 도포되어 있는 판넬(1)과, 상기 판넬(1)의 후방에 프릿글라스를 이용하여 융착되는 펀넬(2)과, 상기 판넬(1)과 펀넬(2)의 접합부위에 위치하는 보강밴드(10)와, 상기 펀넬(2)의 넥크부(3)내에 봉입되어 R, G, B 3개의 전자빔(8)을 발사시키는 전자총(7)과, 상기 전자총(7)으로부터 발사된 전자빔을 편향시키는 편향요크(11)와, 상기 전자빔이 지자계나 외부자계에 의한 영향을 줄이기 위한 인너쉴드(6)와, 상기 판넬(1)의 내측에 결합되어 전자빔의 색선별 기능을 하도록 슬릿형상의 작은 구멍이 무수히 형성된 새도우마스크(4)와, 상기 새도우마스크(4)가 판넬(1)과 일정간격을 유지하도록 지지하는 지지프레임(5)으로 구성되었다.In general, a flat CRT is fused using a panel 1 having R, G, and B fluorescent surfaces 9 coated on its inner surface and a frit glass behind the panel 1, as shown in FIG. The funnel 2, the reinforcing band 10 located at the junction of the panel 1 and the funnel 2, and the neck 3 of the funnel 2 are enclosed and Electron gun (7) for firing the electron beam (8), deflection yoke (11) for deflecting the electron beam emitted from the electron gun (7), and inner shield (6) for reducing the influence of the electron beam by a geomagnetic or external magnetic field And a shadow mask 4 coupled to the inside of the panel 1 and having numerous slit-shaped small holes to color-select the electron beam, and the shadow mask 4 maintains a constant distance from the panel 1. It consists of a support frame (5) to support.

그리고 상기 인너쉴드(6)는 펀넬형상을 따라 형성된 연장부(6b)와, 지지프레임(5)의 플렌지부(5a)와 용접되는 플렌지부(6a)와, 상기 연장부(6b)와, 플렌지부(6a)를 연결하는 연장부(6c)로 이루어진다.The inner shield 6 includes an extension portion 6b formed along a funnel shape, a flange portion 6a welded to the flange portion 5a of the support frame 5, the extension portion 6b, and a flange. It consists of an extension part 6c which connects the branch part 6a.

이와같이 구성되는 종래 기술에 있어서, 지지프레임(5)은 판넬(1) 내면에 고정되어 설치되고, 지지프레임(5)은 인너쉴드(6)를 용접 고정시키기 위해 플렌지부(5a)를 가지고 있다. 용접은 충격등에 의해 인너쉴드(6)가 탈락되거나 진동하지 않도록 복수개의 지점에 행한다.In the prior art configured as described above, the support frame 5 is fixedly installed on the inner surface of the panel 1, and the support frame 5 has a flange portion 5a for welding and fixing the inner shield 6. Welding is performed at a plurality of points so that the inner shield 6 does not fall off or vibrate due to impact or the like.

지지프레임(5)에 부착된 새도우마스크(4)는 전자총(7)에서 발사된 전자빔(8)을 선별하여 형광막(9)에 도달하게 하는 색선별 전극 역할을 하며, 인너쉴드(6)는 브라운관 내부로 유입되는 외부자계를 차폐시켜준다.The shadow mask 4 attached to the support frame 5 serves as a color-selective electrode for selecting the electron beam 8 emitted from the electron gun 7 to reach the fluorescent film 9, and the inner shield 6 It shields the external magnetic field flowing into the CRT.

새도우마스크(4)는 열팽창을 고려하여 니켈과 철의 합금인 인바 또는 탄소와 일부 불순물을 포함한 철로 만들어지며, 인너쉴드(6)의 성분은 낮은 함량의 탄소와 일부 불순물과 철로 이루어져 있다. 그리고 지지프레임(5)의 성분은 일부 불순물과 크롬으로 이루어져 있다.The shadow mask 4 is made of iron containing inba or carbon and some impurities, which are alloys of nickel and iron in consideration of thermal expansion, and the components of the inner shield 6 are made of low carbon and some impurities and iron. And the component of the support frame 5 consists of some impurities and chromium.

지지플레임과 인너쉴드의 용접에 있어서, 철과 크롬의 물리적 특성상 용접성이 뛰어나지 않기 때문에 일부 용접부위가 떨어져 인너쉴드(6)와 지지프레임(5)간의 마찰이 발생되고, 이러한 마찰로 인하여 인너쉴드(6)의 흑화막이 박리되어 방전을 발생시킨다.In the welding of the support frame and the inner shield, due to the physical properties of iron and chromium, the weldability is not excellent, so that some welding parts are separated and friction between the inner shield 6 and the support frame 5 is generated. The blackening film of 6) peels to generate a discharge.

또한 지지프레임(5)을 구성하는 크롬은 상자성이기 때문에 브라운관 내부에 발생되는 외부자계를 차폐하는데 효과적이지 못한 문제점이 있었다.In addition, since the chromium constituting the support frame 5 is paramagnetic, there is a problem in that it is not effective to shield the external magnetic field generated inside the CRT.

본 발명은 상기한 바와같은 종래 기술의 문제점을 해결하기 위하여 발명된 것으로서, 지지프레임의 표면에 니켈을 도금하여 형성시킴으로서, 인너쉴드와의 용접성을 향상시키고 외부자계의 영향에 의한 색순도저하를 감소시키도록 하는데 목적이 있다.The present invention is invented to solve the problems of the prior art as described above, by forming a nickel plated on the surface of the support frame, to improve the weldability with the inner shield and to reduce the color purity decrease due to the influence of the external magnetic field The purpose is to make it work.

제1도는 종래 기술의 브라운관 단면도 및 일부 확대도.1 is a cross-sectional view and a partial enlarged view of a conventional tube.

제2도는 종래 기술의 인너쉴드 용접부 상세도.Figure 2 is a detailed view of the inner shield weld of the prior art.

제3도는 본 발명에 의한 인저쉴드 용접부 상세도.3 is a detailed view of the welder shield welder according to the present invention.

제4도는 본 발명에 의한 인저쉴드 용접부 구조도.4 is a structure of the welder shield welder according to the present invention.

* 도면의 주요부분에 대한 부호의 설명* Explanation of symbols for main parts of the drawings

101 : 판넬 102 : 펀넬101: panel 102: funnel

105 : 지지프레임 106 : 인너쉴드105: support frame 106: inner shield

110 : 보강밴드 111 : 니켈110: reinforcing band 111: nickel

본 발명을 제 3도 및 제 4도를 참조하여 이하에서 상세히 설명한다.The invention is described in detail below with reference to FIGS. 3 and 4.

먼저 구성을 살펴보면 판넬(101)의 내면에 결합되는 지지프레임(105)에는 플렌지부(105a)가 형성되었고, 상기 지지프레임(105)에 결합되는 인너쉴드(106)는 프레임(105)의 플렌지부(105a)와 용접이 가능하도록 외측으로 절곡된 플렌지부(106a)와, 펀넬(102)의 내면곡선을 따라 연장된 연장부(106b)와, 상기 플렌지부(106a)와 연장부(106b)를 연결하는 연결부(106c)로 이루어진 결합구조에 있어서, 상기 지지프레임(105)의 표면에 니켈(111)을 도금하였다.Looking at the configuration first, the flange portion 105a is formed on the support frame 105 coupled to the inner surface of the panel 101, the inner shield 106 coupled to the support frame 105 is the flange portion of the frame 105 The flange portion 106a which is bent outward to allow welding with the 105a, the extension portion 106b extending along the inner surface curve of the funnel 102, and the flange portion 106a and the extension portion 106b. In the coupling structure consisting of connecting portions 106c for connecting, nickel 111 was plated on the surface of the support frame 105.

도면중 미설명 부호 110은 보강밴드를 나타낸다.In the figure, reference numeral 110 denotes a reinforcing band.

본 발명의 구조는 지지프레임(105)의 표면에 강자성을 갖는 니켈(111)을 도금함으로서 철이 주성분을 이루는 새도우마스크나 인너쉴드(106)와의 용접성이 우수하게 된다. 따라서 용접지점이 탈락되어 서로 마찰을 발생시키지 않기 때문에 흑화막의 방리가 없어져 방전이나 마스크막힘 등의 불량이 현저히 감소하게 된다.In the structure of the present invention, by plating nickel 111 having ferromagnetic properties on the surface of the support frame 105, weldability with the shadow mask or inner shield 106 of which iron is a main component is excellent. Therefore, since the welding point is dropped and does not generate friction with each other, the blackening film is eliminated and defects such as discharge or mask clogging are significantly reduced.

또한 니켈은 보자력이 낮고 투자율이 크롬에 비해 상당히 높기 때문에 자계가 타고 흐르기 쉽다. 따라서 브라운관 내부로 침투할 자계의 상당부분이 니켈이 도금된 지지프레임(105)을 타고 흐르기 때문에 브라운관 내부에 침투되는 외부자계의 양이 감소하게 되고, 브라운관의 방향 전환이나 외부기기에서 발생되는 자계에 대해서 덜 민감하게 된다.Nickel also has a low coercive force and a high permeability compared to chromium, making it easy for magnetic fields to flow. Therefore, since a large part of the magnetic field to penetrate the inside of the CRT flows through the nickel-plated support frame 105, the amount of the external magnetic field penetrated into the CRT is reduced, and the direction of the CRT or the magnetic field generated by the external device is reduced. Less sensitive to

즉, 브라운관의 방향 전환이나 외부자계에 대한 전자빔의 이동량이 감소돼서 색순도를 향상시킬 수 있는 것이다.In other words, the color purity can be improved by changing the direction of the CRT or by reducing the amount of movement of the electron beam to the external magnetic field.

이상 설명한 바와같이 본 발명의 인너쉴드 고정장치는 인너쉴드와 지지프레임의 용접성을 향상시키고, 크롬보다 투자율이 높은 니켈을 도금함으로서 외부자계의 영향에 의한 색순도 저하를 감소시키는 효과가 있다.As described above, the inner shield fixing device of the present invention improves the weldability of the inner shield and the support frame, and reduces the color purity decrease due to the influence of an external magnetic field by plating nickel having a higher permeability than chromium.

Claims (1)

내측면에 형광면이 도포되어 있는 판넬과, 상기 판넬의 내측에 결합되는 새도우 마스크와, 상기 새도우마스크가 판넬과 일정간격을 유지하도록 지지하는 지지프레임과, 상기 지지프레임의 플렌지부에 부착되어 외부지자계를 차단하기 위한 인너쉴드와, 상기 판넬의 후단에 결합되어 내부진공상태를 유지하는 펀넬과, 상기 펀넬의 네부크에 봉입되어 R, G, B의 전자빔을 발사하는 전자총으로 구성되는 평면칼라브라운관에 있어서,Panels coated with a fluorescent surface on the inner surface, a shadow mask coupled to the inside of the panel, a support frame for supporting the shadow mask to maintain a predetermined distance from the panel, and an external supporter attached to the flange portion of the support frame A planar color-brown tube consisting of an inner shield for blocking the system, a funnel coupled to the rear end of the panel to maintain an internal vacuum state, and an electron gun encapsulated in the nebuk of the funnel to emit electron beams of R, G, and B. To 상기 인너쉴드가 결합되는 지지프레임 표면에 니켈을 도금하여 형성시키는 것을 특징으로 하는 평면칼라브라운관의 인너쉴드 고정장치.Inner shield fixing device of the flat-color CRT, characterized in that to form the plating on the surface of the support frame to which the inner shield is coupled.
KR1019960057313A 1996-10-31 1996-11-26 Inner shield fixing device of flat color CRT Expired - Fee Related KR100229314B1 (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
KR1019960057313A KR100229314B1 (en) 1996-11-26 1996-11-26 Inner shield fixing device of flat color CRT
US08/959,728 US6005341A (en) 1996-10-31 1997-10-28 Shield for a cathode ray tube
GB9722876A GB2318906B (en) 1996-10-31 1997-10-29 Device for shielding earth magnetic field of a colour CRT
JP30004797A JP3275071B2 (en) 1996-10-31 1997-10-31 Flat color cathode ray tube with magnetic shielding device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1019960057313A KR100229314B1 (en) 1996-11-26 1996-11-26 Inner shield fixing device of flat color CRT

Publications (2)

Publication Number Publication Date
KR19980038414A KR19980038414A (en) 1998-08-05
KR100229314B1 true KR100229314B1 (en) 1999-11-01

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