KR970017799A - Method for manufacturing dry electrophotographic screen of color cathode ray tube - Google Patents

Method for manufacturing dry electrophotographic screen of color cathode ray tube Download PDF

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KR970017799A
KR970017799A KR1019950033479A KR19950033479A KR970017799A KR 970017799 A KR970017799 A KR 970017799A KR 1019950033479 A KR1019950033479 A KR 1019950033479A KR 19950033479 A KR19950033479 A KR 19950033479A KR 970017799 A KR970017799 A KR 970017799A
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cathode ray
charging
film
electrostatic charge
color cathode
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KR1019950033479A
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KR100202871B1 (en
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윤상열
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엄길용
오리온전기 주식회사
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    • 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
    • H01J9/20—Manufacture of screens on or from which an image or pattern is formed, picked up, converted or stored; Applying coatings to the vessel
    • H01J9/22—Applying luminescent coatings
    • H01J9/227—Applying luminescent coatings with luminescent material discontinuously arranged, e.g. in dots or lines
    • H01J9/2276—Development of latent electrostatic images
    • 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
    • H01J29/30—Luminescent screens with luminescent material discontinuously arranged, e.g. in dots, in lines
    • H01J29/32—Luminescent screens with luminescent material discontinuously arranged, e.g. in dots, in lines with adjacent dots or lines of different luminescent material, e.g. for colour television
    • 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
    • H01J9/20—Manufacture of screens on or from which an image or pattern is formed, picked up, converted or stored; Applying coatings to the vessel
    • H01J9/22—Applying luminescent coatings
    • H01J9/227—Applying luminescent coatings with luminescent material discontinuously arranged, e.g. in dots or lines
    • H01J9/2271—Applying luminescent coatings with luminescent material discontinuously arranged, e.g. in dots or lines by photographic processes

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

Abstract

건식 전자사진식 칼라음극선관의 스크린 제조법에 있어 에너지소모가 적으면서도 단시간내에 간단하고 용이하게 현상된 입자들을 가고착시키는 가고착공정을 포함하는 음극선관의 스크린 제조방법을 제공한다.The present invention provides a method for manufacturing a screen of a cathode ray tube including a fastening process for fastening and adhering particles that are developed easily and easily in a short time with low energy consumption in a method for manufacturing a dry electrophotographic color cathode ray tube.

그 방법은, (1) 판넬내면에 휘발성전도막을 형성시키는 1차코팅 단계 ; (2) 그 전도막위에 휘발성광전도막을 형성시키는 2차코팅 단계; (3) 그 광전 도막에 균일한 정전하를 대전시키는 대전단계; (4) 그 광전 도막의 정전하를 선택적으로 방출시키도록 새도우마스크를 통과시켜 노광하는 노광단계; 그리고 (5) 대전된 미세분말을, 상기 노광단계(4)에서 정전하가 선택적으로 방출된 광전 도막의 노광부분과 그 나머지 광전 도막의 비노광부분 중 어느 하나의 영역에 부착시키는 현상단계를 포함하며; 상기 현상단계(5)에서 각 제1, 제2 및 제3형광체의 미세분말에 대해 소망의 배열을 이루도록 상기 대전단계(3) 노광단계(4) 및 현상단계(5)가 반복적으로 실시되는 칼라음극선관의 건식 전자사진식 스크린 제조에 있어서 : 상기 (5) 현상단계 후 각 형광체들을 가고착시키기 위해 수증기를 현상된 판넬의 내면에 접촉시키는 수증기접촉단계를 포함한다.The method comprises the steps of: (1) forming a volatile conductive film on the inner surface of the panel; (2) a secondary coating step of forming a volatile photoconductive film on the conductive film; (3) a charging step of charging a uniform electrostatic charge to the photoelectric coating film; (4) an exposure step of exposing through a shadow mask to selectively release the electrostatic charge of the photoelectric coating film; And (5) a developing step of adhering the charged fine powder to any one of an exposed portion of the photoelectric coating film in which the electrostatic charge is selectively released in the exposure step (4) and a non-exposed portion of the remaining photoelectric coating film. To; Color in which the charging step (3) exposure step (4) and the developing step (5) are repeatedly carried out to form a desired arrangement for the fine powder of each of the first, second and third phosphors in the developing step (5). In the dry electrophotographic screen production of cathode ray tubes, the method comprises the step of contacting water vapor to the inner surface of the developed panel to fix and fix the phosphors after the (5) developing step.

이에 따라, 수증기 접촉에 의한 가고착공정에서 가열 융착이 아닌 폴리머의 용해를 이용하기 때문에 복잡한 가열 및 냉각장치와 판넬까지 가열시키게 되는 많은 열에너지소모가 제거되고, 더욱 그 고착공정 후에 자연건조를 기대할 수도 있으며, 주위조건에 따라 인위적 건조공정을 추가시키더라도 미량의 수증기만을 건조시키는 것이기 때문에 적은 열량과 짧은 시간내에 소망의 가결합 내지는 가고착상태를 얻을 수 있는 효가가 있다.As a result, the use of polymer dissolution rather than heat fusion in the vapor deposition process by steam contact eliminates a lot of heat energy consumed by the heating and cooling system and the panel, and more natural drying may be expected after the fixing process. In addition, even if an artificial drying process is added according to the ambient conditions, only a small amount of water vapor is dried, and thus, there is an effect that a desired heat-bonding or fastening state can be obtained in a small amount of heat and a short time.

Description

칼라음극선관의 건식 전자사진식 스크린 제조방법Method for manufacturing dry electrophotographic screen of color cathode ray tube

본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음Since this is an open matter, no full text was included.

제2도는 제1도의 음극선관의 스크린 구성을 나타낸 부분 확대단면도,2 is a partially enlarged cross-sectional view showing the screen configuration of the cathode ray tube of FIG.

제3도는 (가) 내지 (마)는 종래의 건식 전자사진식 스크린 제조방법을 설명하기 위한 개략도,3 is (a) to (e) is a schematic view for explaining a conventional dry electrophotographic screen manufacturing method,

제4도는 종래의 건식 전자사진식 스크린 제조방법에 의해 칼라음극선관을 제조하는 공정도,4 is a process chart for manufacturing a color cathode ray tube by a conventional dry electrophotographic screen manufacturing method,

제5도 (가), (나)는 본 발명에 따른 칼라음극선관의 건식 전자사진식 스크린을 제조를 위한 가고착방법을 설명하기 위한 현상공정에서 현상된 형광체분말입자의 확대단면도,Figure 5 (a), (b) is an enlarged cross-sectional view of the phosphor powder particles developed in the developing step for explaining a fixing method for manufacturing a dry electrophotographic screen of a color cathode ray tube according to the present invention,

제6도는 본 발명에 따른 건식 전자사진식 스크린 제조방법에 의해 칼라음극선관을 제조하는 공정도.6 is a process chart for producing a color cathode ray tube by a dry electrophotographic screen manufacturing method according to the present invention.

Claims (5)

(1) 판넬내면에 휘발성전도막을 형성시키는 1차코팅 단계; (2) 그 전도막위에 휘발성광전도막을 형성시키는 2차코팅 단계; (3) 그 광전도막에 균일한 정전하를 대전시키는 대전단계; (4) 그 광전도막의 정전하를 선택적으로 방출시키도록 새도우마스크를 통과시켜 노광하는 노광단계; 그리고 (5) 대전된 미세분말을, 상기 노광 단계(4)에서 정전하가 선택적으로 방출된 광전 도막의 노광부분과 그 나머지 광전도막의 비노광부분중 어느 하나의 영역에 부착시키는 현상단계를 포함하며; 상기 현상단계(5)에서 각 제1, 제2 및 제3형광체의 미세분말에 대해 소망의 배열을 이루도록 상기 대전단계(3), 노광단계(4) 및 현상단계(5)가 반복적으로 실시되는 칼라음극선관의 건식 전자사진식 스크린 제조에 있어서; (6) 상기 각각의 현상단계(5)후 각 형광체들을 가고착시키기 위해 수증기를 현상된 판넬의 내면에 접촉시키는 수증기접촉단계를 각각 포함하는 것을 특징으로 하는 칼라음극선관의 건식 전자사진식 스크린 제조방법.(1) a primary coating step of forming a volatile conductive film on the inner surface of the panel; (2) a secondary coating step of forming a volatile photoconductive film on the conductive film; (3) a charging step of charging a uniform electrostatic charge to the photoconductive film; (4) an exposure step of passing through the shadow mask to expose the electrostatic charge of the photoconductive film selectively; And (5) a developing step of adhering the charged fine powder to any one of an exposed portion of the photoelectric coating film in which the electrostatic charge is selectively released in the exposure step (4) and a non-exposed portion of the remaining photoconductive film. To; In the developing step (5), the charging step (3), the exposure step (4) and the developing step (5) are repeatedly carried out to form a desired arrangement for the fine powder of each of the first, second and third phosphors. In the production of dry electrophotographic screens of color cathode ray tubes; (6) manufacturing a dry electrophotographic screen of a color cathode ray tube, characterized in that it comprises a steam contact step of contacting water vapor to the inner surface of the developed panel to fix and fix the respective phosphors after each development step (5). Way. 제1항에 있어서, (7) 상기 수증기접촉단계에서 수증기에 의해 인접한 형광체분말입자의 표면의 용해된 폴리머물질들이 건조되어 그 들어붙은 부분이 가결합상태를 유지하도록 건조시키는 건조단계를 각 수중기접촉단계 후에 추가로 포함하는 것을 특징으로 하는 칼라음극선관의 건식 전자사진식 스크린 제조방법.The method according to claim 1, wherein in the water vapor contacting step, a drying step is performed in which the dissolved polymer materials on the surface of the adjacent phosphor powder particles are dried by water vapor and dried so that the adhered part is kept in a bonded state. Dry electrophotographic screen manufacturing method of a color cathode ray tube, characterized in that it further comprises after the contacting step. 제1항 또는 제2항에 있어서, 상기 수증기접촉단계(6)에서 그 접촉시간은 30초 이내인 것을 특징으로 하는 칼라음극선관의 건식 전자사진식 스크린 제조방법.3. A method for producing a dry electrophotographic screen for a color cathode ray tube according to claim 1 or 2, wherein the contact time in the water vapor contacting step (6) is within 30 seconds. (1) 판넬내면에 휘발성전도막을 형성시키는 1차코팅 단계; (2) 그 전도막위에 휘발성광전도막을 형성시키는 2차코팅 단계; (3) 그 광전도막에 균일한 정전하를 대전시키는 대전단계; (4) 그 광전도막의 정전하를 선택적으로 방출시키도록 새도우마스크를 통과시켜 노광하는 노광단계; 그리고 (5) 대전된 미세분말을, 상기 노광단계(4)에서 정전하가 선택적으로 방출된 광전 도막의 노광부분과 그 나머지 광전도막의 비노광부분중 어느 하나의 영역에 부착시키는 현상단계를 포함하며. 상기 현상단계(5)에서 각 제1, 제2 및 제3형광체외 미세분말에 대해 소망의 배열을 이루도록 상기 대전단계(3), 노광단계(4) 및 현상단계(5)가 반복적으로 실시되는 칼라음극선관의 건식 전자사진식 스크린 제조에 있어서; (6) 상기 각각의 현상단계(5)후 각 형광체들을 가고착시키기 위해 수증기를 현상된 판넬의 내면에 접촉시키는 수증기접촉단계를 각각 포함하는 것을 특징으로 하는 칼라음극선관의 건식 전자사진식 스크린 제조방법.(1) a primary coating step of forming a volatile conductive film on the inner surface of the panel; (2) a secondary coating step of forming a volatile photoconductive film on the conductive film; (3) a charging step of charging a uniform electrostatic charge to the photoconductive film; (4) an exposure step of passing through the shadow mask to expose the electrostatic charge of the photoconductive film selectively; And (5) a developing step of adhering the charged fine powder to any one of an exposed portion of the photoelectric coating film in which the electrostatic charge is selectively released in the exposure step (4) and a non-exposed portion of the remaining photoconductive film. And In the developing step (5), the charging step (3), the exposure step (4) and the developing step (5) are repeatedly carried out to form a desired arrangement for each of the first, second, and third phosphor extra-fine powders. In the production of dry electrophotographic screens of color cathode ray tubes; (6) manufacturing a dry electrophotographic screen of a color cathode ray tube, characterized in that it comprises a steam contact step of contacting water vapor to the inner surface of the developed panel to fix and fix the respective phosphors after each development step (5). Way. 판넬의 내면에 코팅된 휘발성전도막위에 휘발성장전도막을 형성시키고, 그 광전도막에 균일한 정전하를 대전시킨 후, 그 광전도막을 새도우 마스크를 통과시켜 선택적으로 노광하고, 그 노광된 부분에 대전된 제1형광체를 부착시키며, 그 형광체들을 가고착시키기 위해 수증기를 현상된 판넬의 내면에 접촉시키고, 제2 및 제3형광체에 대해서도 각각 소망의 배열로 상기 대전단계, 노광단계, 부착(현상)단계 및 수증기접촉단계를 반복함으로써 형성된 형광면을 지니는 것을 특징으로 하는 칼라음극선관.After forming a volatile conductive film on the volatile conductive film coated on the inner surface of the panel, charging the photoelectric film with a uniform electrostatic charge, and selectively exposing the photoconductive film through a shadow mask and charging the exposed part. Attaching the first phosphor, and contacting water vapor to the inner surface of the developed panel to fix and fix the phosphors, and the charging step, the exposure step, and the deposition (development) in a desired arrangement for the second and third phosphors, respectively. Color cathode ray tube, characterized in that it has a fluorescent surface formed by repeating the step and the vapor contact step. ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR1019950033479A 1995-09-30 1995-09-30 Manufacturing method of electrophotographic screen dry process of color crt KR100202871B1 (en)

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