KR0181741B1 - Method for forming fluorescence screen for cathode ray tube - Google Patents

Method for forming fluorescence screen for cathode ray tube Download PDF

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Publication number
KR0181741B1
KR0181741B1 KR1019930020006A KR930020006A KR0181741B1 KR 0181741 B1 KR0181741 B1 KR 0181741B1 KR 1019930020006 A KR1019930020006 A KR 1019930020006A KR 930020006 A KR930020006 A KR 930020006A KR 0181741 B1 KR0181741 B1 KR 0181741B1
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cathode ray
ray tube
pvc
based polymer
composite material
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KR1019930020006A
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Korean (ko)
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KR950009821A (en
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김봉철
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엄길용
오리온전기주식회사
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    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01JELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J9/00Apparatus 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
    • H01J9/20Manufacture of screens on or from which an image or pattern is formed, picked up, converted or stored; Applying coatings to the vessel
    • H01J9/22Applying luminescent coatings

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  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Formation Of Various Coating Films On Cathode Ray Tubes And Lamps (AREA)

Abstract

본 발명은 음극선관용 형광면 형성 방법에 관한 것으로서, 보다 상세하게는 음극선관의 형광면 노광 시 형광막과 메탈 백의 경계면을 고르게 함으로써 휘도를 향상시킬 수 있는 음극선관용 형광면 형성 방법에 관한 것이다.The present invention relates to a method for forming a fluorescent surface for a cathode ray tube, and more particularly, to a method for forming a fluorescent surface for a cathode ray tube that can improve luminance by leveling the interface between the fluorescent film and the metal back when exposing the cathode surface of the cathode ray tube.

발명의 목적은 메탈 백과 형광막과의 경계면이 거치게 형성됨에 따른 음극선관의 휘도 저하를 방지할 수 있는 음극선관용 형광면 형성 방법에 제공함에 있다.SUMMARY OF THE INVENTION An object of the present invention is to provide a method for forming a fluorescent surface for a cathode ray tube that can prevent a decrease in luminance of a cathode ray tube due to an interface between a metal back and a fluorescent film.

상기한 목적을 달성하기 위해서, 판넬(P)에 형광체(51)와 블랙 매트릭스(52)를 도포하여 건조하고, 상기한 형광체(51)와 블랙 매트릭스(52)의 상부에 PVC계 고분자 합성물질(1)을 도포하며, 상기한 PVC계 고분자 합성물질(1)의 상부에 메탈 백(53)을 도포하여 건조시킨 후 벌브를 봉지하고, 상기한 PVC계 고분자 합성물질(1)을 태워 형광막을 형성함을 특징으로 하는 음극선관용 형광막 형성 방법을 제공한다.In order to achieve the above object, the phosphor 51 and the black matrix 52 are coated and dried on the panel P, and the PVC-based polymer composite material (above the phosphor 51 and the black matrix 52) is applied. 1) is applied, the metal bag 53 is applied to the upper portion of the PVC-based polymer composite material (1), dried, encapsulated with a bulb, and burned the PVC-based polymer composite material (1) to form a fluorescent film. It provides a fluorescent film forming method for a cathode ray tube characterized in that.

Description

음극선관용 형광면 형성 방법Fluorescent surface formation method for cathode ray tube

제1도는 본 발명에 따른 음극선관용 형광면 형성 방법을 도시한 부분 확대도.1 is a partially enlarged view showing a fluorescent surface forming method for a cathode ray tube according to the present invention.

제2도는 일반적인 음극선관용 구성을 도시한 단면도.2 is a cross-sectional view showing a configuration for a typical cathode ray tube.

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

1 : PVC계 고분자 합성물질1: PVC-based polymer composite material

본 발명은 음극선관용 형광면 형성 방법에 관한 것으로서, 보다 상세하게는 음극선관의 형광면 노광 시 형광막의 메탈 백의 경계면을 고르게 함으로써 휘도를 향상시킬 수 있는 음극선관용 형광면 형성 방법에 관한 것이다.The present invention relates to a method for forming a fluorescent surface for a cathode ray tube, and more particularly, to a method for forming a fluorescent surface for a cathode ray tube that can improve luminance by leveling the interface of the metal back of the fluorescent film when the cathode ray tube is exposed.

일반적으로, 음극선관은 열 전자를 가속 및 집속시킴과 아울러 편향시켜 R. G. B 형광체가 순차 배열되어 있는 형광막을 선택 타격함으르로써 소정의 형상과 색을 재현하게 되는 것이다.In general, a cathode ray tube accelerates and focuses hot electrons and deflects them to selectively strike a fluorescent film in which R. G. B phosphors are sequentially arranged to reproduce a predetermined shape and color.

상기한 바와 같은 음극선관은 내부를 고진공으로 형성함과 아울러 밀봉되는 바, 이는 제2도에 도시된 바와 같이 새도우 마스크(S)가 결합됨과 아울러 형광막(50)이 도포되는 판넬(P)과, 상기한 판넬(P)과 결합되고 외주에 편향 요오크(D)가 결합되는 훤넬(F)과, 상기한 훤넬(F)에 연결되고 내주에 전자총(E)이 삽입되는 네크(N)로 구성되어 있다.As described above, the cathode ray tube is sealed with a high vacuum inside, and as shown in FIG. 2, a shadow mask S is coupled and a panel P to which the fluorescent film 50 is applied, and , A panel (F) coupled to the panel (P) and a deflection yoke (D) coupled to the outer circumference, and a neck (N) connected to the channel (F) and the electron gun (E) inserted into the inner circumference. Consists of.

물론, 상기한 훤넬(F)에는 콘덴서 역할을 하는 내, 외장 흑연막(미도시)이 도포되어 있고 도시되지 않은 풀라이 백 트랜스포머와 연결되는 애노드 버튼이 부착되어 있다.Of course, the channel F is provided with an inner and outer graphite film (not shown) serving as a capacitor and an anode button connected to a pulley bag transformer (not shown).

즉, 상기한 전자총(E)에서 집속 및 가속된 전자빔이 편향 요오크(D)에 의해 판넬(P)의 전면으로 편향되면서 새도우 마스크(S)에 의해 선별됨과 아울러 선별된 전자빔이 형광막(50)을 타격함으로써 소정 형상과 색을 재현하게 되는 것이다.That is, the electron beam focused and accelerated in the electron gun E is deflected by the deflection yoke D to the front of the panel P, and is selected by the shadow mask S, and the selected electron beam is selected by the fluorescent film 50. By hitting), a predetermined shape and color are reproduced.

여기서, 상기한 형광막(50)은 R. G. B 형광체(51)가 순차 배열되어 있고, 상기한 각 형광체(51)의 사이에는 블랙 매트릭스(52)가 개재되어 있으며, 상기한 블랙 매트릭스(52)와 형광체(51)의 후면에는 알루미늄 막인 메탈 백(53)이 도포되어 있다.In the above-described fluorescent film 50, the RG B phosphors 51 are sequentially arranged, and a black matrix 52 is interposed between the above-described phosphors 51, and the black matrix 52 and the above-described black matrix 52 are interposed. On the back surface of the phosphor 51, a metal back 53, which is an aluminum film, is coated.

상기한 메탈 백(53)은 통상 증착 공정을 통해 형광체(51)의 상부에 도포되는 바, 블랙 매트릭스(52)와 형광체(51) 형성 후 이를 건조시키고 진공 증착 공정을 통해 알루미늄을 도포하게 되는 것이다.The metal back 53 is typically applied to the upper portion of the phosphor 51 through a deposition process. After forming the black matrix 52 and the phosphor 51, the metal back 53 is dried and coated with aluminum through a vacuum deposition process. .

그러나, 상기한 바와 같이 형광체(51)와 블랙 매트릭스(52)의 상면에 진공 증착 공정을 통해 메탈 백(53)을 도포함은 형광체(51)와 메탈 백(53)의 경계면이 거칠게 형성됨으로써 형광체(51)의 발광 빛이 산란되어 휘도가 저하되는 문제점이 있다.However, as described above, the upper surface of the phosphor 51 and the black matrix 52 includes a metal back 53 through a vacuum deposition process, so that the interface between the phosphor 51 and the metal back 53 is formed to be rough. There is a problem that the emitted light of 51 is scattered and the luminance is lowered.

따라서, 본 발명의 목적은 메탈 백과 형광막과의 경계면이 거칠게 형성됨에 따른 음극선관의 휘도 저하를 방지할 수 있는 음극선관용 형광면 형성 방법을 제공함에 있다.Accordingly, an object of the present invention is to provide a fluorescent surface forming method for a cathode ray tube that can prevent the lowering of the luminance of the cathode ray tube due to the rough interface between the metal back and the fluorescent film.

상기한 목적을 실현하기 위하여 본 발명은 메탈 백의 증착전에 PVC계 고분자 합성물질을 형광면 상부에 도포한 후 증착하고 증착 후 벌브의 소성 공정에서 PVC계 고분자 합성물질을 태워 제거하며 상기한 PVC계 고분자 합성물질에 의해 메탈 백과 형광면 사이의 경계면이 매끄럽게 형성되도록 구성함을 특징으로 한다.In order to achieve the above object, the present invention is to apply the PVC-based polymer composite material to the upper surface of the fluorescent surface before the deposition of the metal back and then to deposit and burn the PVC-based polymer composite in the firing process of the bulb after the deposition and the PVC-based polymer synthesis Characterized in that the interface between the metal back and the fluorescent surface is formed smoothly by the material.

이하, 첨부 도면을 참조하여 본 발명의 바람직한 실시예를 설명하면 다음과 같다.Hereinafter, exemplary embodiments of the present invention will be described with reference to the accompanying drawings.

제1도는 본 발명에 따른 음극선관용 형광면 노광 방법을 도시한 부분 확대도로서, 판넬(P)에 형광체(51)와 블랙 매트릭스(52)가 도포되어 있고, 상기한 형광체(51)와 블랙 매트릭스(52)의 상부에 메탈 백(53)이 도포되어 있으며, 상기한 메탈 백(53)과 형광체(51)의 사이에 PVC계 고분자 합성물질(1)이 개재되어 있다.FIG. 1 is a partially enlarged view showing a fluorescent surface exposure method for a cathode ray tube according to the present invention, wherein a phosphor 51 and a black matrix 52 are coated on a panel P, and the phosphor 51 and the black matrix ( The metal bag 53 is coated on the upper portion of the 52, and the PVC-based polymer composite material 1 is interposed between the metal bag 53 and the phosphor 51.

상기한 PVC계 고분자 합성물질(1)은 재료의 성질상 표면이 매끄럽게 되는 바, 상기한 형광체(51)와 블랙 매트릭스(52)와, 메탈 백(53) 사이의 경계면이 매끄럽게 된다.Since the surface of the PVC-based polymer composite material 1 is smooth due to the property of the material, the interface between the phosphor 51, the black matrix 52, and the metal back 53 is smooth.

즉, 형광체(51)와 메탈 백(53) 사이의 경계면이 매끄럽게 됨으로써 이를 통과하는 전자빔이 난반사됨을 방지하게 된다.That is, the interface between the phosphor 51 and the metal back 53 is smoothed to prevent diffuse reflection of the electron beam passing therethrough.

물론, 상기한 PVC계 고분자 합성물질(1)은 벌브의 소성 공정에서 태워지게 되고 형광체(51)와 메탈 백(53)이 맞닿은 면이 되는 것이다.Of course, the above-described PVC-based polymer composite material 1 is burned in the firing process of the bulb, and the phosphor 51 and the metal back 53 are in contact with each other.

여기서, 상기한 형광막의 제작 공정은 형광체(51)의 블랙 매트릭스(52)를 노광 공정을 통해 형성한 후 그 상단에 PVC계 고분자 합성물질(1)을 도포하고 다시 그 상부에 메탈 백(53)을 도포하여 성하게 된다.Here, in the manufacturing process of the above-described fluorescent film, after forming the black matrix 52 of the phosphor 51 through an exposure process, the PVC-based polymer composite material (1) is applied on the upper side and the metal back 53 on the upper side again. It is made by coating.

상기한 바와 같이 형광막을 형성한 후 전자총(미도시)을 삽입한 후 벌브를 봉지하고 에이징 공정 등을 실시하게 되면 전자총의 절연 능력이 향상됨과 아울러 고주파를 벌브에 인가하여 PVC계 고분자 합성물질(1)를 태우게 된다.After forming a fluorescent film as described above, inserting an electron gun (not shown), encapsulating the bulb, and performing an aging process improves the insulation ability of the electron gun and applies a high frequency to the bulb, thereby applying a PVC-based polymer composite material (1). ) Burned.

상기한 PVC계 고분자 합성물질(1)의 두께는 수 ㎛단위이기 때문에 PVC계 고분자 합성물질(1)이 타버린 후 형광체(51)와 메탈 백(53)이 밀착되게 된다.Since the thickness of the PVC-based polymer composite material 1 is several μm, the phosphor 51 and the metal back 53 are in close contact with each other after the PVC-based polymer composite material 1 burns out.

상기한 실시예에서 PVC계 고분자 합성물질은 폴리비닐 알콜이나 폴리비닐 피로리톤을 사용할 수 있다. 밀착된 메탈 백(53)과 형광체(51)의 경계면은 매끄럽게 형성됨으로써 이를 통과하는 전자빔의 난 반사가 감소된다.In the above embodiment, the PVC-based polymer composite material may use polyvinyl alcohol or polyvinyl pyritone. The interface between the metal bag 53 and the phosphor 51 in close contact with each other is smoothly formed, thereby reducing egg reflection of the electron beam passing therethrough.

즉, 전자빔의 난 반사가 감소됨으로써 형광체(51)를 발광시키는 효율이 향상됨으로써 휘도가 향상된다.That is, since the reflection of the electron beam is reduced, the efficiency of emitting the phosphor 51 is improved, thereby improving the luminance.

이상과 같이 본 발명은 형광체와 메탈 백과의 사이에 PVC계 고분자 합성물질을 도포하여 형광면을 형성한 후 소성 공정에서 PVC계 고분자 합성물질을 태워 형광체와 메탈 백과의 경계면을 매끄럽게 형성함으로써 휘도를 향상시킬 수 있는 잇점이 있는 것이다.As described above, the present invention applies a PVC-based polymer composite material between the phosphor and the metal bag to form a fluorescent surface, and then burns the PVC-based polymer composite material in the firing process to smoothly form the interface between the phosphor and the metal bag to improve luminance. There is an advantage to this.

Claims (2)

판넬(P)에 형광체(51)와 블랙 매트릭스(52)를 도포하여 건조하고, 상기한 형광체(51)와 블랙 매트릭스(52)의 상부에 PVC계 고분자 합성물질(1)을 도포하며, 상기한 PVC계 고분자 합성물질(1)의 상부에 메탈 백(53)을 도포하여 건조시킨 후 벌브를 봉지하고, 상기한 PVC계 고분자 합성물질(1)을 태워 형광막을 형성함을 특징으로 하는 음극선관용 형광막 형성 방법.The phosphor 51 and the black matrix 52 are coated and dried on the panel P, and the PVC-based polymer composite material 1 is coated on the phosphor 51 and the black matrix 52. The fluorescent material for cathode ray tube, characterized by forming a fluorescent film by coating the metal bag 53 on top of the PVC-based polymer composite material (1), drying the bulb, and burning the PVC-based polymer composite material (1). Film formation method. 제1항에 있어서, 상기 PVC계 고분자 합성물질(1)이 폴리비닐 알콜이나 폴리비닐 피로리톤인 것을 특징으로 하는 음극선관용 형광막 형성 방법.The method for forming a fluorescent film for cathode ray tubes according to claim 1, wherein said PVC-based polymer composite material (1) is polyvinyl alcohol or polyvinyl pyritritone.
KR1019930020006A 1993-09-28 1993-09-28 Method for forming fluorescence screen for cathode ray tube KR0181741B1 (en)

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