KR920001571Y1 - Shadowmask for cathode ray tube - Google Patents

Shadowmask for cathode ray tube Download PDF

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Publication number
KR920001571Y1
KR920001571Y1 KR2019890016178U KR890016178U KR920001571Y1 KR 920001571 Y1 KR920001571 Y1 KR 920001571Y1 KR 2019890016178 U KR2019890016178 U KR 2019890016178U KR 890016178 U KR890016178 U KR 890016178U KR 920001571 Y1 KR920001571 Y1 KR 920001571Y1
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KR
South Korea
Prior art keywords
shadow mask
hole
ray tube
cathode ray
electron beam
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KR2019890016178U
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Korean (ko)
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KR910009892U (en
Inventor
박해균
Original Assignee
삼성전관 주식회사
김정배
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Application filed by 삼성전관 주식회사, 김정배 filed Critical 삼성전관 주식회사
Priority to KR2019890016178U priority Critical patent/KR920001571Y1/en
Priority to MYPI90001903A priority patent/MY104794A/en
Priority to JP1990115351U priority patent/JPH0751727Y2/en
Priority to GB9023840A priority patent/GB2238423B/en
Priority to CN90108940A priority patent/CN1027019C/en
Publication of KR910009892U publication Critical patent/KR910009892U/en
Application granted granted Critical
Publication of KR920001571Y1 publication Critical patent/KR920001571Y1/en
Priority to US07/876,071 priority patent/US5189334A/en

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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
    • H01J29/02Electrodes; Screens; Mounting, supporting, spacing or insulating thereof
    • H01J29/06Screens for shielding; Masks interposed in the electron stream
    • H01J29/07Shadow masks for colour television tubes
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01JELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J2229/00Details of cathode ray tubes or electron beam tubes
    • H01J2229/07Shadow masks
    • H01J2229/0727Aperture plate
    • H01J2229/0766Details of skirt or border
    • H01J2229/0772Apertures, cut-outs, depressions, or the like

Abstract

내용 없음.No content.

Description

음극선관용 섀도우마스크Shadow Mask for Cathode Ray Tube

제 1 도는 종래 음극선관용 섀도우마스크의 전개도.1 is an exploded view of a shadow mask for a conventional cathode ray tube.

제 2 도는 제 1 도에 도시된 종래 음극선관용 섀도우마스크가 프레임에 고정된 상태의 사시도.FIG. 2 is a perspective view of a conventional cathode ray tube shadow mask shown in FIG. 1 fixed to a frame; FIG.

제 3 도는 본 고안에 따른 음극선관용 섀도우마스크를 나타낸 것으로서, (a)는 전개도이고, (b)는 (a)에 도시된 A부분을 발췌하여 도시한 사시도.Figure 3 shows a shadow mask for the cathode ray tube according to the present invention, (a) is a development view, (b) is a perspective view showing an excerpt A portion shown in (a).

제 4 도는 본 고안에 따른 음극선관용 섀도우마스크가 프레임에 용접된 상태를 사시도.4 is a perspective view of a state in which a shadow mask for a cathode ray tube according to the present invention is welded to a frame.

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

30 : 섀도우마스크 31 : (섀도우마스크의) 전자법 통과공30: shadow mask 31: through the electron method (of the shadow mask)

32 : 유공부 33 : 무공부32: non-study department 33: no study

34 : 요입부34: recessed part

본 고안은 음극선관용 섀도우마스크에 관한 것으로서, 더 상세하게는 섀도우마스크의 절곡 및 성형이 용이하도록 개량한 것에 관한 것이다.The present invention relates to a shadow mask for a cathode ray tube, and more particularly, to an improvement to facilitate bending and molding of a shadow mask.

일반적으로 패널의 내측 공간부에 설치된 섀도우마스크는 전자총으로부터 형광면으로 주사되는 전자빔을 걸러주는 일종의 필터역할과 색선별기능을 갖는 것으로서, 음극선관에 있어서는 이의 역할이 매우 중요한 것이다.In general, the shadow mask installed in the inner space of the panel has a filter role and color sorting function to filter the electron beam scanned from the electron gun to the fluorescent surface, and its role is very important in the cathode ray tube.

이와 같은 기능을 가지는 종래의 섀도우마스크는 제 1 도에 도시된 바와 같이 무수한 전자빔 통과공(11)이 형성된 유공부(12)가 마련되고, 유공부(12)의 외곽에는 전자빔 통과공(11)이 형성되지 않은 무공부(13)가 마련되며 상기 무공부(13)에는 상기 유공부를(12)를 감싸는 띠상의 요입홈(14)이 형성되어 유공부(12)가 가열됨으로써 발생하는 열팽창량을 흡수할 수 있도록 되어 있다.As shown in FIG. 1, the conventional shadow mask having such a function is provided with a hole 12 having a myriad of electron beam through holes 11 formed therein, and an electron beam through hole 11 outside the hole 12. The non-porous portion 13 is provided, and the non-porous portion 13 is provided with a strip-shaped recessed groove 14 surrounding the perforated portion 12 so that the amount of thermal expansion generated by heating the perforated portion 12 is provided. It is designed to absorb water.

상기와 같이 구성된 종래의 섀도우마스크(10)를 제 2 도에 도시된 바와 같이 프레임(20)에 용접 고정하기 위해서는 상기 유공부(12)를 소정의 곡률로 성형함과 아울러 상기 무공부(13)는 프레임(20)을 감쌀수 있도록 절곡하여 스컷트부(13a)를 형성하고 이 무공부(13)에 형성된 스컷트부(13)를 프레임(20)에 접촉시켜 점용접함으로써 고정하여 왔다.In order to weld-fix the conventional shadow mask 10 configured as described above to the frame 20 as shown in FIG. 2, the hole 12 is formed at a predetermined curvature and the non-hole 13 is formed. Has been bent to wrap the frame 20 to form the cut portion 13a, and the cut portion 13 formed on the non-porous portion 13 is fixed by spot welding by contacting the frame 20.

이때 섀도우마스크(10)의 절곡 성형은 도면에는 도시되어 있지 않으나 일반적으로 프레스에 장착된 상하부금형에 의해 수행되게 되는데, 상기 섀도우마스크의 무공부(13)의 가장자리를 가압하여 상기 유공부(12)에 대하여 거의 직각으로 스컷트부(13a)를 절곡성형한 후 상하부 금형의 가압력이 제거되게 되면 상기 스컷트부(13a)는 섀도우마스크(10)의 재질 고유의 탄성력에 의해 스프링 백(spring back)현상이 야기된다.At this time, the bending mask of the shadow mask 10 is not shown in the drawing, but is generally performed by the upper and lower molds mounted on the press, and presses the edge of the non-perforated part 13 of the shadow mask to allow the hole 12. When the cutting portion 13a is bent and formed at substantially right angles with respect to the pressing force of the upper and lower molds, the cut portion 13a is spring backed by an elastic force inherent to the material of the shadow mask 10. The phenomenon is caused.

이는 상기 섀도우마스크(10)를 프레임(20)에 용접 고정할때에 프레임(20)의 측면과 스컷트부(13a)의 들뜸이 발생하여 용접이 곤란할 뿐만 아니라 용접시에 들떠있던 스컷트부(13a)가 프레임(20)과 접촉되면서 상기 유공부(12)에 형성된 전자빔 통과공(11)을 변형시키게 된다. 또한 평면상의 무공부(13)는 상기 무수한 전자빔통과공(11)이 형성된 유공부(12)에 비해 구조적으로 강하므로 스컷트부(13a)의 절곡 성형시에 유공부(12)변형되는 경우가 많았다. 따라서 전자층으로부터 방출된 전자빔이 패널 내측면에 형성된 스크린막에 정확하게 랜딩되지 못하게 되므로 화면의 색순도가 저하되는 문제점이 있다.When the shadow mask 10 is welded and fixed to the frame 20, the side of the frame 20 and the cut portion 13a are lifted up, so that welding is difficult and the cut portion which was excited during the welding ( 13a is in contact with the frame 20 to deform the electron beam through hole 11 formed in the hole 12. In addition, since the planar non-hole 13 is structurally stronger than the hole 12 having the numerous electron beam passing holes 11 formed therein, the hole 12 is deformed during bending of the cut portion 13a. Many. Therefore, since the electron beam emitted from the electron layer cannot be accurately landed on the screen film formed on the inner surface of the panel, there is a problem that the color purity of the screen is reduced.

따라서 본 고안은 스컷트부의 절곡 성형시에 발생하는 스프링 백 현상을 억제하여 유공부에 형성된 전자빔 통과공의 변형을 방지 함으로써 고정세의 음극선관 제작을 가능케하는 음극선관용 섀도우마스크를 제공함에 그 목적이 있다.Therefore, the present invention is to provide a shadow mask for cathode ray tube which enables high-precision cathode ray tube manufacture by suppressing the spring back phenomenon occurring during bending forming of the cut part to prevent deformation of the electron beam through hole formed in the perforated part. have.

상기 목적을 달성하기 위하여 본 고안은 음극선관의 패널 내측면에 형성된 형광막과 소정의 간격으로 유지되며, 전자총으로부터 방출된 전자빔이 통과하는 다수의 전자빔 통과공이 형성된 유공부와, 이 유공부의 외곽에 전자빔 통과공이 형성되지 않은 무공부가 마련된 음극선관용 섀도우마스크에 있어서, 상기 무공부의 상하면에 상기 유공부의 중심으로부터 방사상으로 연장되는 다수의 요입부를 형성하되, 상기 무공부의 상하면에 형성된 요입부가 서로 엇갈리도록 형성된 것을 그 특징으로 한다.In order to achieve the above object, the present invention is maintained at a predetermined distance from the fluorescent film formed on the inner surface of the panel of the cathode ray tube, and the hole portion formed with a plurality of electron beam passing holes through which the electron beam emitted from the electron gun passes, and the outer portion of the hole A shadow mask for a cathode ray tube provided with no holes formed therein, wherein a plurality of recesses are formed on upper and lower surfaces of the non-holes, the recesses being formed on the upper and lower surfaces of the non-holes. It is characterized by being formed staggered.

이하 첨부된 도면을 참고하여 본 고안의 한 바람직한 실시예를 상세하게 설명한다.Hereinafter, with reference to the accompanying drawings will be described in detail a preferred embodiment of the present invention.

제 3 도 및 제 4 도에 나타내 보인 본 고안의 음극선관용 섀도우마스크(30)는 프레임(20)에 고정된 채 상기 패널의 내측면에 형성된 형광막과 소정의 간격으로 유지되는 한편 그 몸체에는 전자총으로부터 방출된 전자빔이 통과할 수 있도록 다수의 전자빔 통과공(31)이 형성된 유공부(32)와 상기 유공부(32)의 외곽에 상기 전자빔통과공(31)이 형성되지 않은 무공부(33)가 마련되어 있다.The shadow mask 30 for the cathode ray tube of the present invention shown in FIGS. 3 and 4 is held at a predetermined distance from the fluorescent film formed on the inner surface of the panel while being fixed to the frame 20 while the electron gun is disposed on the body. Perforations 32 having a plurality of electron beam through holes 31 formed therein so that the electron beams emitted from the through holes 31 and non-holes 33 in which the electron beam passing holes 31 are not formed outside the perforations 32 are formed. Is provided.

그리고, 상기 무공부(33)의 상하면에는 유공부(32)의 중심으로부터 방사상으로 연장되는 다수의 요입부(34)가 엣칭가공되어 형성되되, 상기 상하면에 형성된 요입부(34)는 서로 엇갈리도록 되어 있으며 상기 무공부(33)의 일부는 유효면(32)에 대하여 대략 직각으로 절곡되어 스컷트부(33a)를 이룬다.In addition, the upper and lower surfaces of the non-hole portion 33 are formed by etching a plurality of recesses 34 extending radially from the center of the hole 32, so that the recesses 34 formed on the upper and lower surfaces are alternate with each other. A portion of the non-porous portion 33 is bent at a substantially right angle with respect to the effective surface 32 to form a cut portion 33a.

이와 같이 구성된 본 고안의 음극선관용 섀도우마스크(30)는 무공부(33)가 종래에 비하여 상대적으로 약하기 때문에 스컷트부(33a)의 절곡 성형이 용이하며 그 유공부(32)에 형성된 전자빔 통과공(31)의 변형을 방지할 수 있다.Since the shadow mask 30 for the cathode ray tube 30 of the present invention configured as described above is relatively weak compared to the prior art, the bending part of the cut part 33a is easily formed, and the electron beam passing hole formed in the hole part 32 is formed. The deformation of the 31 can be prevented.

즉, 섀도우마스크(30)의 무공부를 프레스 가공하여 스컷트부(33a)를 절곡성형하게 되면 섀도우마스크(30)의 무공부(33) 상,하면에 방사상의 에칭 가공된 요입부(34)가 형성되어 있으므로 이 부위가 상대적으로 약해 절곡성형이 용이하며 상기 요입부(34)가 무공부(33)의 상하면에 서로 엇갈리게 형성되어 있으므로 재질 고유의 탄성력에 의한 스프링 백현상을 방지할 수 있는 것이다.That is, when the uncut portion of the shadow mask 30 is press-formed and the cut portion 33a is bent, the radially etched indented portion 34 is disposed on the lower portion 33 of the shadow mask 30. Since this part is relatively weak, this part is relatively easy to bend, and the indentation part 34 is formed on the upper and lower sides of the non-perforated part 33 so as to prevent spring back phenomenon due to the inherent elastic force of the material. .

결과적으로 섀도우마스크(30)의 스컷트부(33a)를 프레임(20)에 용접 고정할때에 프레임 측면으로부터 스컷트부(33a)의 들뜸이 발생하지 않게 되어 용접위치를 용이하게 찾을 수 있으며 용접시 유공부(32)에 형성된 전자빔 통과공(31)의 변형을 방지할 수 있게 되는 것이다.As a result, when the cut portion 33a of the shadow mask 30 is fixed to the frame 20 by welding, lifting of the cut portion 33a does not occur from the side of the frame so that the welding position can be easily found. The deformation of the electron beam through hole 31 formed in the hole 32 is to be prevented.

따라서 도면에는 도시되어 있지 않으나 전자총으로부터 방출된 전자빔이 섀도우마스크(30)의 전자빔통과공(31)을 통과하여 형광면에 정확하게 랜딩되어 선명한 화상의 음극선관의 제작이 가능하게 되는 것이다.Therefore, although not shown in the drawing, the electron beam emitted from the electron gun passes through the electron beam passing hole 31 of the shadow mask 30 and is accurately landed on the fluorescent surface, thereby enabling the fabrication of a cathode ray tube of a clear image.

이와 같이 본 고안은 섀도우마스크의 무공부의 상하면에 엣칭가공된 요입부를 형성함으로써 섀도우마스크의 스컷트부의 절곡 성형이 용이하여 절곡에 따른 불량율을 현저하게 줄일 수 있는 이점이 있다.In this way, the present invention has an advantage in that bending of the cut portion of the shadow mask is easy to be formed by forming an indented portion which is etched on the upper and lower surfaces of the non-perforated portion of the shadow mask, thereby significantly reducing the defective rate due to the bending.

Claims (1)

몸체에 전자총으로부터 방출된 전자빔이 통과할 수 있도록 다수의 전자빔통과공이 형성된 유공부와, 이 유공부의 외곽에 전자빔통과공이 형성되지 않은 무공부가 마련된 음극선관용 섀도우마스크에 있어서, 상기 무공부(33)의 상하면에 상기 유공부(32)의 중심으로부터 방사상으로 연장되는 다수의 요입부(34)를 형성하되, 상기 무공부(33)의 상면에 형성된 요입부(34)와 하면에 형성된(34)가 서로 엇갈리도록 형성된 것을 특징으로 하는 음극선관용 섀도우마스크.In the shadow mask for cathode ray tube provided with a hole portion formed with a plurality of electron beam through holes to pass the electron beam emitted from the electron gun, and the hole is not formed in the outer periphery of the hole, the non-hole portion 33 A plurality of concave indentations 34 extending radially from the center of the hole 32 is formed on the upper and lower surfaces of the concave portions 34, 34 formed on the upper surface of the non-cavity 33 Shadow mask for cathode ray tube, characterized in that formed to cross each other.
KR2019890016178U 1989-11-02 1989-11-02 Shadowmask for cathode ray tube KR920001571Y1 (en)

Priority Applications (6)

Application Number Priority Date Filing Date Title
KR2019890016178U KR920001571Y1 (en) 1989-11-02 1989-11-02 Shadowmask for cathode ray tube
MYPI90001903A MY104794A (en) 1989-11-02 1990-10-30 Cathode-ray tube having and improved shadow mask.
JP1990115351U JPH0751727Y2 (en) 1989-11-02 1990-11-01 Shadow mask for cathode ray tube
GB9023840A GB2238423B (en) 1989-11-02 1990-11-02 Shadow mask for a cathode-ray tube
CN90108940A CN1027019C (en) 1989-11-02 1990-11-02 Cathode-ray tube having improved shadow mask
US07/876,071 US5189334A (en) 1989-11-02 1992-04-28 Cathode ray tube having shadow mask

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR2019890016178U KR920001571Y1 (en) 1989-11-02 1989-11-02 Shadowmask for cathode ray tube

Publications (2)

Publication Number Publication Date
KR910009892U KR910009892U (en) 1991-06-29
KR920001571Y1 true KR920001571Y1 (en) 1992-03-05

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JP (1) JPH0751727Y2 (en)
KR (1) KR920001571Y1 (en)
CN (1) CN1027019C (en)
GB (1) GB2238423B (en)
MY (1) MY104794A (en)

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JP2000011911A (en) 1998-06-26 2000-01-14 Hitachi Ltd Color cathode-ray tube having shadow mask
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MY104794A (en) 1994-05-31
GB9023840D0 (en) 1990-12-12
CN1051459A (en) 1991-05-15
JPH0376352U (en) 1991-07-31
KR910009892U (en) 1991-06-29
GB2238423A (en) 1991-05-29
JPH0751727Y2 (en) 1995-11-22
CN1027019C (en) 1994-12-14
GB2238423B (en) 1994-07-13

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