KR970006036B1 - Crt - Google Patents

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Publication number
KR970006036B1
KR970006036B1 KR1019940006277A KR19940006277A KR970006036B1 KR 970006036 B1 KR970006036 B1 KR 970006036B1 KR 1019940006277 A KR1019940006277 A KR 1019940006277A KR 19940006277 A KR19940006277 A KR 19940006277A KR 970006036 B1 KR970006036 B1 KR 970006036B1
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KR
South Korea
Prior art keywords
panel
film
cathode ray
explosion
coating film
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KR1019940006277A
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Korean (ko)
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KR950027890A (en
Inventor
김진영
Original Assignee
엘지전자 주식회사
구자홍
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Priority to KR1019940006277A priority Critical patent/KR970006036B1/en
Publication of KR950027890A publication Critical patent/KR950027890A/en
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Publication of KR970006036B1 publication Critical patent/KR970006036B1/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
    • H01J9/24—Manufacture or joining of vessels, leading-in conductors or bases
    • H01J9/244—Manufacture or joining of vessels, leading-in conductors or bases specially adapted for cathode ray tubes
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J29/00—Details of cathode-ray tubes or of electron-beam tubes of the types covered by group H01J31/00
    • H01J29/02—Electrodes; Screens; Mounting, supporting, spacing or insulating thereof
    • H01J29/10—Screens on or from which an image or pattern is formed, picked up, converted or stored
    • H01J29/18—Luminescent screens
    • H01J29/28—Luminescent screens with protective, conductive or reflective layers
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J29/00—Details of cathode-ray tubes or of electron-beam tubes of the types covered by group H01J31/00
    • H01J29/86—Vessels; Containers; Vacuum locks
    • H01J29/861—Vessels or containers characterised by the form or the structure thereof
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J2229/00—Details of cathode ray tubes or electron beam tubes
    • H01J2229/86—Vessels and containers
    • H01J2229/8603—Neck or cone portions of the CRT vessel
    • H01J2229/8606—Neck or cone portions of the CRT vessel characterised by the shape

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  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Vessels, Lead-In Wires, Accessory Apparatuses For Cathode-Ray Tubes (AREA)

Abstract

a panel fixed to a funnel and coated with an anti-electrostatic film, an anti-glare film and an anti-reflect film consecutively on the surface thereof; a conductive coating film overlapping the electrostatic protect film; an anti-radiation band grounding the electrostatic charge on the panel surface.

Description

음극선관Cathode ray tube

제1도는 종래 음극선관의 일례를 나타낸 종단면도.1 is a longitudinal sectional view showing an example of a conventional cathode ray tube.

제2도는 종래 음극선관의 다른 예를 나타낸 종단면도.2 is a longitudinal sectional view showing another example of a conventional cathode ray tube.

재3도는 제2도의 A부 확대도.FIG. 3 is an enlarged view of portion A of FIG. 2.

제4도는 제2도의 좌측면도.4 is a left side view of FIG.

제5도는 본 발명의 음극선관을 나타낸 종단면도.5 is a longitudinal sectional view showing a cathode ray tube of the present invention.

제6도는 제5도의 B부 확대도.6 is an enlarged view of a portion B of FIG.

제7도는 본 발명의 방전특성을 종래와 비교하여 나타낸 그래프.7 is a graph showing the discharge characteristics of the present invention in comparison with the prior art.

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

11 : 판넬 12 : 펀넬11 panel 12 funnel

13 : 대전방지막 14 : 난반사 및 반사방지막13 antistatic film 14 diffuse reflection and antireflection film

15 : 도전성 도포막 16 : 방폭밴드15 conductive coating film 16 explosion-proof band

17 : 도전성 테이프17: conductive tape

본 발명은 표시수단으로 절리 사용되는 음극선관에 관한 것으로서, 좀더 구체적으로는 판넬의 표면에 대전방지막이 형성되는 음극선관을 대형화 함에 따라 발생되는 전하분포의 불균일을 해소할 수 있도록 한 것이다.The present invention relates to a cathode ray tube jointed as a display means, and more particularly, to solve the non-uniformity of the charge distribution generated by increasing the size of the cathode ray tube formed with an antistatic film on the surface of the panel.

일반적으로 음극선관을 이용한 표시수단에는 텔레비젼수상기, 컴퓨터용 모니터, 계측기, 공작기계 등이 알려져 있다.Generally, television receivers, computer monitors, measuring instruments, machine tools and the like are known as display means using cathode ray tubes.

첨부도면 제1도는 가장 널리 사용되는 음극선관을 나타낸 종단면도로 그 구성을 살펴보면, 판넬(panel)(1)과 펀넬(funnel)(2)이 그라스(glass)로 융착되어 있고 상기 판넬의 외측에는 음극선관의 방폭특성을 향상시키기 위한 방폭밴드(3)가 감싸여 고정되어 있다.1 is a longitudinal cross-sectional view showing the most widely used cathode ray tube, the panel (1) and funnel (2) is fused in glass (glass) and the outside of the panel is a cathode ray Explosion-proof band (3) is wrapped and fixed to improve the explosion-proof characteristics of the pipe.

그러나 이러한 일반적인 음극선관은 음극선관에 전원인가시 판넬(1)의 표면으로 +전하가 인가되었다가 전원을 끌때에는 -전하가 발생되어 판넬의 표면에 높은 전압이 걸리게 되므로 정전기가 발생되고, 이에 따라 음극선관의 동작중 또는 동작이 종료된 후에 판넬의 표면에 정전하가 누적되었으므로 판넬의 표면에 이용자의 손이나 옷이 접촉될 때 강한 쇼크를 받게 하였음은 물론 발생된 정전기로 인하여 판넬의 표면에 이물질이 부착되었으므로 화질이 떨어지게 되는 문제점을 갖고 있었다.However, such a general cathode ray tube is positively generated because the positive charge is applied to the surface of the panel (1) when the power is applied to the cathode ray tube and when the power is turned off, the negative charge is generated and a high voltage is applied to the surface of the panel. Electrostatic charges accumulated on the surface of the panel during or after the operation of the cathode ray tube, which resulted in a strong shock when the user's hands or clothes touched the panel surface, as well as foreign matter on the surface of the panel due to the generated static electricity. Since it was attached, there was a problem that the image quality is lowered.

이를 감안하여 전원의 온,오프시 판넬의 표면으로 대전되는 정전기를 방전시키도록 제2도 내지 제4도와 같은 기술이 제안되었다.In view of this, techniques such as FIGS. 2 to 4 have been proposed to discharge the static electricity charged to the surface of the panel when the power is on or off.

그 구성을 살펴보면, 전술한 바와 같은 음극선관의 판넬(1) 표면에 대전방지막(4)을 코팅한 다음 제4도와 같이 판넬의 각변 중앙에 수직으로 도전성 테이프(5)를 부착하도록 되어 있다.Looking at the configuration, the antistatic film 4 is coated on the surface of the panel 1 of the cathode ray tube as described above, and then the conductive tape 5 is vertically attached to the center of each side of the panel as shown in FIG.

상기 도전성 테이프는 음극선관의 동작중 또는 동작이 종료된 후에 발생하는 정전기를 그라운드시키는 역할을 하게 된다.The conductive tape serves to ground the static electricity generated during or after the operation of the cathode ray tube.

그러나 이러한 음극선관 또한, 방폭밴드와 대전방지막과의 접속이 2-4개의 도전성 테이프에 의해 이루어지므로 이들의 조립작업시 간격이 불균일하게 되는 경우가 빈번이 발생되었고, 이에 따라 20 이상의 대형 음극선관인 경우에는 정전하의 분포가 불균일하였음은 물론 정전하의 감쇄효과가 저하되는 문제점이 있었다.However, since such a cathode ray tube is also connected to the explosion-proof band and the antistatic film by 2-4 conductive tapes, there are frequent occurrences of non-uniform spacing during the assembling thereof. There was a problem that the distribution of the static charge was not uniform, as well as the attenuation effect of the static charge was reduced.

또한, 금속으로 된 방폭밴드(3)를 유리재질의 판넬 외주면에 직접 고정하기 때문에 방폭밴드와 판넬의 접촉성 및 기밀성이 떨어지게 되었고, 이에 따라 방폭밴드의 조립작업이 어렵게 되었다.In addition, since the explosion-proof band 3 made of metal is directly fixed to the outer peripheral surface of the panel of glass material, the contact and airtightness of the explosion-proof band and the panel are inferior, thereby making the assembly of the explosion-proof band difficult.

본 발명은 종래의 이와같은 문제점을 해결하기 위해 안출한 것으로서, 판넬의 표면에서 발생되는 정전기를 균일하면서도 신속하게 방전시킴과 동시에 방폭밴드의 설치에 따른 작업성을 향상시킬 수 있도록 하는데 그 목적이 있다.The present invention has been made to solve such a problem in the prior art, the purpose is to discharge the static electricity generated from the surface of the panel uniformly and quickly, and at the same time improve the workability according to the installation of the explosion-proof band. .

상기 목적을 달성하기 위한 본 발명의 형태에 따르면, 펀넬과 고정되고 표면에는 대전방지막과 난반사 및 반사방지막이 차례로 코팅된 판넬과, 상기 판넬의 전면 주연부로 대전방지막과 중첩되게 코팅된 도전성 도포막과, 상기 도전성 도포막의 외측으로 감겨진 도전성 테이프와, 상기 도전성 테이프에 접속되게 감싸여 설치되어 판넬의 표면에서 발생되는 정전기를 그라운드시키는 방폭밴드로 구성된 음극선관이 제공된다.According to an aspect of the present invention for achieving the above object, a panel fixed with a funnel and coated with an antistatic film, a diffuse reflection and an antireflection film in turn, and a conductive coating film coated to overlap the antistatic film at the front edge of the panel; There is provided a cathode ray tube comprising a conductive tape wound to the outside of the conductive coating film, and an explosion-proof band wrapped and connected to the conductive tape to ground static electricity generated from the surface of the panel.

본 발명의 다른 형태에 따르면, 펀넬과 고정되고 표면에는 대전방지막과 난반사 및 반사방지막이 차례로 코팅된 판넬과, 상기 판넬의 전면 주연부로 대전방지막과 중첩되게 코팅된 도전성 도포막과, 상기 도전성 도포막의 외측으로 감겨진 도전성의 테이프와, 상기 도전성 테이프에 접속되게 감싸여 설치되어 판넬의 표면에서 발생되는 정전기를 그라운드시키는 방폭밴드로 구성된 음극선관이 제공된다.According to another aspect of the present invention, a panel fixed to the funnel and coated with an antistatic film, a diffuse reflection and an antireflection film on the surface thereof, a conductive coating film coated so as to overlap with the antistatic film on the front edge of the panel, and the conductive coating film Provided is a cathode ray tube composed of a conductive tape wound outwardly and wrapped around the conductive tape to be connected to the conductive tape, and an explosion-proof band for grounding static electricity generated from the surface of the panel.

이하, 본 발명을 일실시예로 도시한 첨부된 제5도 내지 제7도를 참고로 하여 더욱 상세히 설명하면 다음과 같다.Hereinafter, the present invention will be described in more detail with reference to the attached FIGS. 5 to 7 as an embodiment.

첨부도면 제5도는 본 발명의 음극선관을 나타낸 종단면도이고 제6도는 제5도의 B부 확대도이며 제7도는 본 발명의 방전특성을 종래와 비교하여 나타낸 그래프이다.5 is a longitudinal sectional view showing a cathode ray tube of the present invention, FIG. 6 is an enlarged view of portion B of FIG. 5, and FIG. 7 is a graph showing discharge characteristics of the present invention in comparison with the prior art.

본 발명은 펀넬(12)과 고정된 판넬(11)의 표면에 대전방지막(13)과 난반사 및 반사방지막(14)이 차례로 코팅되어 있고 상기 판넬의 전면 주연부에는 대전방지막(13)과 중첩되게 도전성 도포막(15)이 코팅되어 있다.In the present invention, an antistatic film 13, a diffuse reflection, and an antireflection film 14 are sequentially coated on the surfaces of the funnel 12 and the fixed panel 11, and the conductive material is overlapped with the antistatic film 13 on the front edge of the panel. The coating film 15 is coated.

본 발명의 일 실시예에서는 상기 도전성 도포막의 외측으로 판넬(11)의 표면에서 발생되는 정전기를 그라운드시키는 방폭밴드(16)가 감싸여 고정되어 있다.In one embodiment of the present invention, the explosion-proof band 16 for grounding the static electricity generated on the surface of the panel 11 outside the conductive coating film is wrapped and fixed.

그러나 다른 실시예로 도전성 도포막(15)과 방폭밴드(16) 사이에 도전성 테이프(17)를 감싼다음 상기 도전성 테이프의 상면으로 방폭밴드가 위치되도록 할 수 있다.However, in another embodiment, the conductive tape 17 may be wrapped between the conductive coating film 15 and the explosion-proof band 16, and then the explosion-proof band may be positioned on the upper surface of the conductive tape.

이 경우에는 도전성 테이프(17)에 의해 방폭밴드의 결합작업시 방폭밴드가 미끄러지지 않게 되므로 작업성이 향상된다.In this case, since the explosion-proof band does not slip during the coupling operation of the explosion-proof band by the conductive tape 17, workability is improved.

이와 같이 구성된 본 발명의 제조공정을 설명하면 다음과 같다.Referring to the manufacturing process of the present invention configured as described above is as follows.

먼저 판넬(11)과 펀넬(12)의 결함작업이 완료된 상태에서 상기 판넬(11)의 표면에 대전방지막(13)을 코팅한 다음 건조한다.First, the antistatic film 13 is coated on the surface of the panel 11 in a state in which defects of the panel 11 and the funnel 12 are completed, and then dried.

상기 코팅방법으로는 스페이 또는 스핀방법을 이용할 수 있다.The coating method may be a spade or a spin method.

그후, 대전방지막의 상면으로 상기 대전방지막의 테두리부분이 외부로 노출되도록 난반사 및 반사방지막(14)을 형성한다.After that, the diffuse reflection and the antireflection film 14 are formed on the upper surface of the antistatic film so that the edge portion of the antistatic film is exposed to the outside.

그다음 판넬(11)의 테두리부분으로 노출된 대전방지막과 중첩되게 판넬(11)의 외주연에 도전성 도포막(15)을 롤코팅기를 이용하여 코팅한다.Then, the conductive coating film 15 is coated on the outer periphery of the panel 11 by using a roll coater to overlap the antistatic film exposed to the edge of the panel 11.

상기 도전성 도포막은 접착용액에 Sn, In, Pt, Ag, Al, Sb중 어느 하나의 금속분말을 10% 내외로 첨가 혼합하여 사용하거나, 상기 금속을 적어도 2가지 이상 적절하게 혼합하여 접착용액과 중량비로 10% 내외가 되게 하여 사용하게 된다.The conductive coating film is used by adding and mixing a metal powder of any one of Sn, In, Pt, Ag, Al, and Sb to about 10% in the adhesive solution, or by mixing at least two or more of the metals as appropriate, It will be used at about 10%.

이때 상기 도전성 도포막의 저항값은 일반적으로 102-1010Ω 정도의 저항값을 갖게 되는데, 상기 저항값은 도전성 도포막에 포함되는 금속의 함유량에 의해 크게 차이가 나며 저항값은 작을수록 좋다.In this case, the resistance value of the conductive coating film generally has a resistance value of about 10 2 -10 10 Ω. The resistance value varies greatly by the content of metal included in the conductive coating film, and the smaller the resistance value is, the better.

이는 저항값이 작으므로서 방전효율이 향상되도록 하기 위함이다.This is to improve the discharge efficiency because the resistance value is small.

상기한 도전성 도포막의 저항값은 100Ω 이하로 하는 것이 바람직하다.It is preferable that the resistance value of the said conductive coating film shall be 100 ohms or less.

이와같이 금속분말이 포함된 도전성 도포막을 코팅 완료하여 튜브를 건조한 다음 방폭밴드(16)를 직접 도전성 도포막의 외측으로 감거나, 또는 도전성 도포막의 외측으로 도전성 테이프(17)를 감싼다음 상기 도전성 테이프에 방폭밴드를 고정한다.In this way, the conductive coating film containing the metal powder is coated to dry the tube, and then the explosion-proof band 16 is directly wrapped on the outside of the conductive coating film, or the conductive tape 17 is wrapped on the outside of the conductive coating film, and then explosion-proof on the conductive tape. Secure the band.

이때 도전성 테이프는 유리재질의 판넬(11)이 미끄러워 방폭밴드(16)가 미끄러지는 것을 방지하며, 도전성 도포막과 방폭밴드의 접촉성 및 밀착성을 향상시키게 된다.At this time, the conductive tape prevents the explosion-proof band 16 from slipping due to the slippage of the glass panel 11, and improves the contact and adhesion between the conductive coating film and the explosion-proof band.

이에 따라 전원의 온,오프시 판넬(11)의 표면에 발생되는 정전기가 대전방지막(13)-도전성 도포막(15)-도전성 테이프(17)-방폭밴드(16)를 통해 TV셋트의 그라운드로 전송되므로 판넬의 표면에는 정전기가 발생되지 않게 되는 것이다.Accordingly, the static electricity generated on the surface of the panel 11 when the power is turned on or off is transferred to the ground of the TV set through the antistatic film 13, the conductive coating film 15, the conductive tape 17, and the explosion-proof band 16. Since it is transmitted, the surface of the panel does not generate static electricity.

이상에서와 같은 본 발명은 음극선관의 판넬의 표면에 누적된 정전하를 도전성 도포막과 도전성 테이프에 의해 균일하고 신속하게 방전시키게 되어 제7도에 도시한 바와 같이 종래의 음극선관에 비해 판넬의 표면에 인가되는 전압이 현격히 저하되므로 정전기로 인한 쇼크를 미연에 방지하게 됨은 물론 화면 전면부에 먼지나 이물질이 부착되는 것을 방지하게 되므로 양질의 화상을 얻게 된다.As described above, the present invention discharges the static charge accumulated on the surface of the panel of the cathode ray tube uniformly and quickly by the conductive coating film and the conductive tape. Since the voltage applied to the surface is significantly reduced, it prevents shock due to static electricity and prevents dust or foreign matter from adhering to the front of the screen, thereby obtaining a good image.

또한, 방폭밴드의 고정작업시 유리재질로된 판넬에서 금속재의 방폭밴드가 미끄러지지 않게 되므로 방폭밴드의 고정작업 효율을 더욱 향상시키게 되는 효과도 얻게 된다.In addition, since the explosion-proof band of the metal material does not slip in the panel made of glass when the explosion-proof band is fixed, the effect of further improving the fixing work efficiency of the explosion-proof band is also obtained.

Claims (3)

펀넬과 펀넬이 그라스로 융착되고 상기 판넬에는 대전방지막과 난반사 또는 반사방지막이 코팅되어 있으며 상기 판넬의 외주부에는 방폭밴드가 감싸여 있는 음극선관에 있어서, 상기 판넬의 외주부에 상기 대전방지막과 중첩되게 도전성 도포막을 형성시키고 상기 도전성 도포막에는 Sn, In, Pt, Ag, Al, Sb중 적어도 하나의 금속분말이 10% 정도 첨가된 것을 특징으로 하는음극선관.In a cathode ray tube in which a funnel and a funnel are fused with glass, and the panel is coated with an antistatic film and an antireflection or antireflection film, and an explosion-proof band is wrapped around the outer circumference of the panel, the outer circumference of the panel overlaps with the antistatic film. A cathode ray tube, wherein a coating film is formed and at least one metal powder of Sn, In, Pt, Ag, Al, and Sb is added to the conductive coating film by about 10%. 제1항에 있어서, 상기 도전성 도포막과 방폭밴드 사이에 감겨진 도전성 테이프를 더 포함하여 구성된 음극선관.The cathode ray tube according to claim 1, further comprising a conductive tape wound between the conductive coating film and the explosion-proof band. 제1항 또는 제2항에 있어서, 도전성 도포막의 저항값은 100Ω 이하임을 특징으로 하는 음극선관.The cathode ray tube according to claim 1 or 2, wherein the resistance value of the conductive coating film is 100 Ω or less.
KR1019940006277A 1994-03-28 1994-03-28 Crt KR970006036B1 (en)

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