KR940010953B1 - Method of forming antistatic film of cathode ray tube - Google Patents
Method of forming antistatic film of cathode ray tube Download PDFInfo
- Publication number
- KR940010953B1 KR940010953B1 KR1019910017812A KR910017812A KR940010953B1 KR 940010953 B1 KR940010953 B1 KR 940010953B1 KR 1019910017812 A KR1019910017812 A KR 1019910017812A KR 910017812 A KR910017812 A KR 910017812A KR 940010953 B1 KR940010953 B1 KR 940010953B1
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- South Korea
- Prior art keywords
- ray tube
- cathode ray
- antistatic film
- forming
- antistatic
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- 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
- H01J29/88—Vessels; Containers; Vacuum locks provided with coatings on the walls thereof; Selection of materials for the coatings
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- Vessels, Lead-In Wires, Accessory Apparatuses For Cathode-Ray Tubes (AREA)
- Formation Of Various Coating Films On Cathode Ray Tubes And Lamps (AREA)
Abstract
내용 없음.No content.
Description
제 1 도는 일반적인 음극선관의 일부절계 측면도.1 is a partial side view of a typical cathode ray tube.
제 2 도는 본 발명에 따른 음극선관의 대전방지막 형성방법을 가시적으로 나타낸 도면.2 is a view visually showing a method for forming an antistatic film of a cathode ray tube according to the present invention.
* 도면의 주요부분에 대한 부호의 설명* Explanation of symbols for main parts of the drawings
1 : 음극 2 : 섀도우마스크 프레임 조립체1 cathode 2 shadow mask frame assembly
3 : 패널 5 : 펀넬3: panel 5: funnel
30 : 챔버 31 : 히이터30: chamber 31: heater
본 발명은 음극선관이 대전방지막 형성방법에 관한 것으로서 다 상세하게는 음극선관의 스크린면에 대전 방지막을 균일한 두께로 형성할 수 있으며 표면조도를 향상시킬 수 있는 음극선관 형성방법에 관한 것이다.The present invention relates to a method for forming an antistatic film of a cathode ray tube, and more particularly, to a method of forming a cathode ray tube capable of forming an antistatic film on a screen surface of a cathode ray tube with a uniform thickness and improving surface roughness.
통상적으로 음극선관은 제 1 도에 도시된 바와 같이 그 내면에 형광막(3a)이 형성되며, 이의 소정간격 이격되도록 그 내부에 섀도우마스크 프레임 조립체(2) 설치된 패널(3)과 그 네크부에 전자총(4)이 봉입된 펀넬(5)이 봉착되어 된 것으로서, 상기 전자총(4)으로부터 방출된 전자가 상기 섀도우마스크의 전자빔통과공을 통하여 형광막(3a)에 랜딩됨으로써 하나의 화소를 이루게되고 이들 화소가 모여 하나의 화면을 이루게 된다. 그런데, 상기 전자총(4)으로부터 방출된 전자는 음극을 띠게 되므로 상기 음극선관(1)의 스크린면은 양전기가 대전되게 되는 대전현상 즉 정전기가 발생하게 된다. 이와 같은 스크린면의 대전현상은 주위의 인지등을 흡착하여 해상도를 저하시키게 되고 더욱이 음극선관의 스크린면에 무의식으로 접촉하는 경우 조작자가 전기적 쇼크를 받을 가능성이 커지므로 이러한 대전의 방지가 요구되고 있다.Typically, as shown in FIG. 1, the cathode ray tube has a fluorescent film 3a formed on an inner surface thereof, and a panel 3 and a neck portion provided with a shadow mask frame assembly 2 therein so as to be spaced apart therebetween. The funnel 5 in which the electron gun 4 is enclosed is sealed, and electrons emitted from the electron gun 4 are landed on the fluorescent film 3a through an electron beam through hole of the shadow mask to form a pixel. These pixels combine to form a screen. However, since the electrons emitted from the electron gun 4 have a negative electrode, the screen surface of the cathode ray tube 1 generates a charging phenomenon in which positive electricity is charged, that is, static electricity. Such charging of the screen surface reduces the resolution by adsorbing the perception of the surrounding light, and furthermore, it is required to prevent such charging because the operator is more likely to receive an electric shock when the screen surface of the cathode ray tube is inadvertently contacted. .
이러한 대전을 방지하는 수단으로 종래에는 스크린면의 표면에 산화인듐(In2O3), 산화주석(SnO2)등의 투명 도전물질을 스프레이로서 도포하여 대전방지막(20)을 형성하여 왔다. 이와 같이 음극선관(1)의 스크린면 표면에 대전방지물질 즉, 상기 투명도전성물질을 스프레이하여 대전방지막(20)을 형성하는 방법은 대전방지 물질을 스크린면 표면에 균일한 두께로 도포할 수 없을 뿐만 아니라, 기포가 발생하여 대전방지막(20)에 구멍 뚫림현상이 발생하게 되는 문제점이 있었다. 이를 더욱 상세하게 설명하면 상기 음극선관(1)의 스크린면에 대전방지막을 형성하기 위한 도포작업은 작업자 또는 로봇트가 스프레이로서 도포하게 되므로 음극선관(1)의 제품마다 도포되는 양이 달라 그 두께가 일정하지 않게되고, 상기 대전방지물이 스프레이에 의해 고압으로 분사되게 되므로 스프레이 내부의 부분적인 압력 차이에 의해 기포가 발생하게 되며 나아가서는 스크린면에 도포된 대전방지막의 구멍 뚫림 현상이나 얼룩이 발생하게 되는 것이다.As a means of preventing such a charge, the antistatic film 20 has been conventionally formed by spraying a transparent conductive material such as indium oxide (In 2 O 3 ), tin oxide (SnO 2 ), etc. on the surface of the screen surface as a spray. As described above, in the method of forming an antistatic film 20 by spraying an antistatic material, ie, the transparent conductive material, on the screen surface of the cathode ray tube 1, the antistatic material cannot be applied to the screen surface surface with a uniform thickness. In addition, there was a problem that a bubble is generated to cause a hole in the antistatic film 20. In more detail, the coating operation for forming an antistatic film on the screen surface of the cathode ray tube 1 is applied by a worker or a robot as a spray, so the amount applied to each product of the cathode ray tube 1 is different. Since it is not constant, the antistatic material is sprayed at a high pressure by the spray, so bubbles are generated due to partial pressure difference inside the spray, and furthermore, puncture or staining of the antistatic film applied to the screen surface occurs. will be.
본 발명은 상기 문제점을 해결하기 위하여 창출된 것으로서, 음극선관의 스크린면 표면에 대전방지물질을 균일한 두께로 형성할 수 있으며 얼룩의 발생원인을 근본적으로 해결한 음극선관의 대전방지막 형성방법을 제공함에 그 목적이 있다.The present invention has been made to solve the above problems, it is possible to form an antistatic material in a uniform thickness on the screen surface of the cathode ray tube and provides a method of forming an antistatic layer of the cathode ray tube fundamentally solved the cause of the occurrence of stains Has its purpose.
상기 목적을 달성하기 위하여 본 발명은 음극선관의 스크린면에 대전방지막을 형성하는 음극선관의 대전방지막 형성방법에 있어서, 상기 투명도전성 대전방지물질을 상기 스크린면 증착하여 대전방지막을 형성하는 것을 특징으로 한다.In order to achieve the above object, the present invention provides a method for forming an antistatic film of a cathode ray tube for forming an antistatic film on a screen surface of a cathode ray tube, characterized in that to form an antistatic film by depositing the transparent conductive antistatic material on the screen surface. do.
이하 첨부된 도면을 참조하여 본 발명에 따른 한 바람직한 실시예를 상세하게 설명한다.Hereinafter, with reference to the accompanying drawings will be described in detail a preferred embodiment according to the present invention.
본 발명에 따른 음극선관의 대전방지막 형성방법은 산화인듐(InO2) 또는 산화주석(SnO2)등과 같은 투명 도전성 대전방지물을 고진공의 분위기에서 증착하여 음극선관의 스크린면에 대전방지막을 형성하는 것이다. 이때에 상기 스크린면에 형성되는 대전방지막을 음극선관의 방폭밴드와 접속되도록 증착함이 바람직하고 상기 투명도전물질에 sb, sn등과 같은 불순물을 도핑하여 대전방지막의 광투과율을 조절함이 바람직하다. 또는 상기 대전방지막을 유효화면에만 증착하고 이 유효화면과 방폭밴드를 도전상태이므로 연결하여도 무방하다.The method for forming an antistatic film of a cathode ray tube according to the present invention is to form an antistatic film on the screen surface of a cathode ray tube by depositing a transparent conductive antistatic material such as indium oxide (InO 2 ) or tin oxide (SnO 2 ) in a high vacuum atmosphere. will be. At this time, it is preferable to deposit an antistatic film formed on the screen surface so as to be connected to the explosion-proof band of the cathode ray tube, and dopants such as sb, sn and the like to the transparent conductive material to adjust the light transmittance of the antistatic film. Alternatively, the antistatic film may be deposited only on the effective screen, and the effective screen and the explosion-proof band may be connected because they are in a conductive state.
상술한 바와 같이 본 발명에 따른 음극선관의 스크린면에 대전방지막을 형성하는 방법을 제 2 도에 나타내보인 바와 같이 진공챔버(30)에 음극선관(1)의 스크린면이 내부에 위치되도록 설치하고 이와 대향되는 위치에 설치된 히이터(31)로 부터 대전방지물질을 기화시켜 스크린면에 증착하게 된다. 특히 음극선관(1)의 유효화면만을 증착하고자 할때에는 도면에 도시되어 있지 않으나, 유효화면과 대응되는 개구부가 형성된 커버를 음극선관에 끼우고 하면 된다. 이와 같이 스크린면에 대전방지물질을 증착하여 대전방지막을 형성하는 것은 스크린막에 균일한 두께를 가지며 화학적으로 안정되고 기계적으로 강도가 매우 우수한 대전방지막을 형성할 수 있다. 또한 상기 대전방지막은 투명도전성 대전방지물질을 고진공하에서 증착하여 형성하게 되므로 종래와 같이 스프레이방식에서 발생하고 막얼룩이나 기포발생을 근본적으로 해결할 수 있다.As described above, a method of forming an antistatic film on the screen surface of the cathode ray tube according to the present invention is installed in the vacuum chamber 30 such that the screen surface of the cathode ray tube 1 is located inside the vacuum chamber 30. The antistatic material is vaporized from the heater 31 installed at a position opposite to the vapor deposited on the screen surface. In particular, when only the effective screen of the cathode ray tube 1 is to be deposited, although not shown in the drawing, a cover having an opening corresponding to the effective screen may be inserted into the cathode ray tube. As described above, forming an antistatic film by depositing an antistatic material on the screen surface may form an antistatic film having a uniform thickness on the screen film and having a chemically stable and excellent mechanical strength. In addition, since the antistatic film is formed by depositing a transparent conductive antistatic material under high vacuum, the antistatic film may be generated in a spray method as in the prior art and may fundamentally solve a film stain or bubble generation.
이와 같이 본 발명 음극선관의 대전방지막 형성방법은 스크린면에 대전방지막을 증착형성함으로써 상술한 바와 같은 문제점을 해결하고 제품의 신뢰성을 향상시킬 수 있는 이점이 있다.As described above, the method for forming an antistatic film of the cathode ray tube of the present invention has the advantage of solving the above-mentioned problems and improving the reliability of the product by depositing an antistatic film on the screen surface.
Claims (1)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1019910017812A KR940010953B1 (en) | 1991-10-10 | 1991-10-10 | Method of forming antistatic film of cathode ray tube |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1019910017812A KR940010953B1 (en) | 1991-10-10 | 1991-10-10 | Method of forming antistatic film of cathode ray tube |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| KR930008937A KR930008937A (en) | 1993-05-22 |
| KR940010953B1 true KR940010953B1 (en) | 1994-11-19 |
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ID=19321070
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| KR1019910017812A Expired - Fee Related KR940010953B1 (en) | 1991-10-10 | 1991-10-10 | Method of forming antistatic film of cathode ray tube |
Country Status (1)
| Country | Link |
|---|---|
| KR (1) | KR940010953B1 (en) |
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1991
- 1991-10-10 KR KR1019910017812A patent/KR940010953B1/en not_active Expired - Fee Related
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| Publication number | Publication date |
|---|---|
| KR930008937A (en) | 1993-05-22 |
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