KR930010267B1 - Method of making a coating membrane of crt - Google Patents
Method of making a coating membrane of crt Download PDFInfo
- Publication number
- KR930010267B1 KR930010267B1 KR1019910011784A KR910011784A KR930010267B1 KR 930010267 B1 KR930010267 B1 KR 930010267B1 KR 1019910011784 A KR1019910011784 A KR 1019910011784A KR 910011784 A KR910011784 A KR 910011784A KR 930010267 B1 KR930010267 B1 KR 930010267B1
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- South Korea
- Prior art keywords
- cathode ray
- ray tube
- panel
- coating film
- solvent
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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
- H01J9/24—Manufacture or joining of vessels, leading-in conductors or bases
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- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Vessels, Lead-In Wires, Accessory Apparatuses For Cathode-Ray Tubes (AREA)
- Formation Of Various Coating Films On Cathode Ray Tubes And Lamps (AREA)
Abstract
Description
제1도는 종래의 방버에 의한 음극선관의 패널표면 확대 사진(400배).1 is an enlarged photograph (400 times) of a panel surface of a cathode ray tube according to a conventional chamber.
제2도는 본 발명에 의한 음극선관의 패널표면 확대사진(400배).2 is an enlarged view (400 times) of a panel surface of a cathode ray tube according to the present invention.
본 발명은 음극선관 패널 외부 표면에 반사방지 및 대전방지성 코팅막을 형성하는 방법에 관한 것이다.The present invention relates to a method of forming an antireflective and antistatic coating film on an outer surface of a cathode ray tube panel.
음극선관은 그 패널 외면이 매끄러운 면으로 되어 있어 외광을 강하게 정반사하여 패널면에 나타나는 화상을 시청하기 어려운 문제가 있다.The cathode ray tube has a smooth outer surface, so that it is difficult to see an image appearing on the panel surface by strongly reflecting external light.
또한 음극선관의 재질로 사용된 유리 또는 플라스틱은 절연체로서 작동에 따라 정전하가 누적되어, 외부표면으로 먼지를 글어들여 해상도가 떨어질 뿐 아니라 사람이 접촉할 때 전기 쇼크를 받게 될 가능성도 있게 된다.In addition, glass or plastic used as a material for cathode ray tubes accumulate electrostatic charges as they function as insulators, attracting dust to the outer surface, reducing the resolution, and possibly causing electric shock when a person contacts them.
이러한 문제를 극복하기 위해 패널외면을 미세한 요철면으로 함으로써 외광을 난반사시켜 발생되는 정전기를 분산시키는 여러가지 방법이 고안되었다.In order to overcome this problem, various methods have been devised to disperse static electricity generated by diffuse reflection of external light by making the outer surface of the panel a fine uneven surface.
예를 들면, 음극선관 패널 외면의 유리를 불산에 의해 선택 에칭하여 요철을 만드는 화학적 방법이있으나, 공해문제를 발생하기 쉽고 패널이 손상되기 쉬우며 재생처리가 불가능한 문제점이 있고 ; 연마제를 사용한 샌드블라스트법으로 패널외면에 요철을 형성하는 방법은, 품질이 일정하지 않게되고 재생이 불가능하며 연마제 등 이물질 혼입의 염려가 있다는 문제점이 있고 ; 플라스틱 필름을 피복시키는 방법은 패널표면에 상처를 입히기 쉽고 유기용제가 용출되기쉽다는 문제점이 있었다.For example, there is a chemical method of forming irregularities by selectively etching the glass on the outer surface of the cathode ray tube panel with hydrofluoric acid, but there is a problem that it is easy to cause pollution problems, the panel is easily damaged, and the regeneration treatment is impossible; The method of forming irregularities on the outer surface of the panel by the sandblasting method using an abrasive has a problem that the quality is not constant, the reproduction is impossible, and there is a fear of mixing of foreign substances such as an abrasive; The method of coating the plastic film has a problem in that it is easy to damage the surface of the panel and the organic solvent is easily eluted.
이러한 공해, 물질유지및 생산단가의 문제점을 해결하는 대응책으로 실리카 유도체를 패널 외면에 스프레이 도표하여 150℃ 이하의 온도에서 소성시키는, 소위 외광반사 방지액을 도포하는 방법이 실시되어 왔다.As a countermeasure to solve the problem of pollution, material maintenance and production cost, a method of applying a so-called external light reflection prevention liquid, in which a silica derivative is sprayed on a panel outer surface and fired at a temperature of 150 ° C. or less, has been implemented.
이와 같은 종래의 외광반사 방지액의 일례로 일특개소 61-118932호에 의하면, 음극선관 패널의 외면에 Si(OR)4(R은 알킬기이다)의 알콜 용액을 스프레이하여 도포하고 80℃ 내지 150℃ 의 저온에서 소성함으로써 Si-O-Si의 실록산 구조중 ≡ Si-OH의 실라놀기의 일부를 잔존시켜 대전방지성을 갖게 하고 HNO3를 참가하여 막접착력의 감소를 방지하였다.As an example of such a conventional anti-reflective liquid, according to Japanese Patent Application Laid-Open No. 61-118932, an alcohol solution of Si (OR) 4 (R is an alkyl group) is applied to the outer surface of the cathode ray tube panel by spraying, and then 80 ° C to 150 ° C. By firing at low temperature, a part of the silanol groups of Si-OH remained in the siloxane structure of Si-O-Si to make it antistatic and participate in HNO 3 to prevent a decrease in the film adhesion.
종래의 반사방지 및 대전방지 코팅막 조성물은알킬실리케이트를 메탄올, 에탄올, 이소프로판올, 부탄올등의 알코올류, 케톤류 및 아세테이트류 중 1종이상의 혼합 용매에 용해시켜 사용하였다. 따라서, 각각의 용매의 혼합 비율에 따라 휘발속도 등에 차이가 있고 요철의 거칠기를 조절하기가 어렵기 때문에, 음극선관을 켰을 때 불규칙한 요철에의해 반짝거림 현상(sparkling)이 나타나는 문제점이 있었다.Conventional antireflective and antistatic coating film compositions were used by dissolving alkyl silicates in one or more mixed solvents of alcohols such as methanol, ethanol, isopropanol, butanol, ketones and acetates. Therefore, there is a problem in that sparking phenomenon occurs due to irregular irregularities when the cathode ray tube is turned on because there is a difference in volatilization speed or the like depending on the mixing ratio of each solvent and it is difficult to control the roughness of the irregularities.
본 발명의 목적은 음극선과 패널외면에 반사방지 및 대전방지성 코팅막을 형성시키는 데 있어서, 그 표면요청의 거칠기를 조절하여 촉감이 부드러울 뿐 아니라,음극선관을 켰을 때 반짝거림 현상이 없는 코팅막형성 방법을 제공하는데 있다.An object of the present invention is to form an anti-reflective and anti-static coating film on the cathode ray and the outer surface of the panel, by adjusting the roughness of the surface request is not only soft to the touch, but also a coating layer formation method that does not shine when the cathode ray tube is turned on To provide.
상기 목적을 달성하기 위한 본 발명의 음극선관의 코팅막 형성방법은 알킬실리케이트 및 용매를 포함하는 조성물을 음극선관의 패널외면에 도포하고 건조하는 것에 의하여 반사방지 및 대전 방지성 코팅막을 형성시키는 음극선관의 코팅막 형성방법에 있어서, 상기 용매에 디옥산을 더욱 첨가시킨 조성물을 사용하는 것을 특징으로 한다.Method of forming a coating film of the cathode ray tube of the present invention for achieving the above object is a cathode ray tube for forming an antireflective and antistatic coating film by applying a composition containing an alkyl silicate and a solvent to the panel outer surface of the cathode ray tube and dried In the method for forming a coating film, it is characterized by using a composition in which dioxane is further added to the solvent.
상기에서 디옥산은 조성물 전체의 1 내지 30%로 첨가하는 것이 바람직하다.Dioxane is preferably added in 1 to 30% of the total composition.
본 발명은 종래의 반사방지 및 대전방지 코팅막 조성물에 있어서 알킬 실리케이트를 용해시키기 위한 혼합 용매를 단순화시키기 위해 물과 쉽게 환화되며 비점이 100℃ 부근에 있는 유기용매인 디옥산을 선택하였다.The present invention selects dioxane, which is an organic solvent that is easily cyclized with water and has a boiling point around 100 ° C. to simplify the mixed solvent for dissolving the alkyl silicate in the conventional antireflective and antistatic coating film composition.
즉, 발명은 알킬 실리케이트 3 내지 7%, 알콜로서는 메탄올 단독으로 30 내지 85% 및 물 0.5 내지 15%에 디옥산 1 내지 30%를 첨가하여 각 성분 간의 친화도를 높인 조성물을 음극선관의 패널 외면에 스프레이 도포후 소성함으로써, 형성되는 요철의 입자 및 거칠기를 조절하여 촉감이 부드러운 면을 갖게 하고 음극선관을 켰을 때 나타나는 반짝거림 현상을 제거한 것이다.In other words, the invention is a composition in which the affinity between the components is increased by adding 3 to 7% of alkyl silicate and 1 to 30% of dioxane to 30 to 85% of methanol alone and 0.5 to 15% of water as alcohol. By spraying after spraying on, the particles and the roughness of the formed irregularities are adjusted to give a soft touch and eliminate the glare that appears when the cathode ray tube is turned on.
본 발명은 하기의 실시예에 의하여 상세히 설명된다. 단, 하기의 실시예는 본 발명의 예시일 뿐 본 발명을 이로써 한정하는 것은 아니다.The invention is illustrated in detail by the following examples. However, the following examples are only examples of the present invention, and the present invention is not limited thereto.
[실시예]EXAMPLE
에틸실리케이트 6.5%, 메탄올/물 83.5% 및 디옥산 10%의 혼합용액을 패널 외면에 스프레이 도포후 소성한다.A mixed solution of 6.5% ethyl silicate, 83.5% methanol / water and 10% dioxane is sprayed onto the outer surface of the panel and fired.
제1도는 종래의 조성물을 스프레이 도포후 소성하여 얻은 음극선관의 패널 표면 확대사진(400배)이고, 제2도는 상기 실시예에 의한 음극선관의 패널표면 확대사진(400배)이다.1 is an enlarged picture (400 times) of a panel surface of a cathode ray tube obtained by firing a conventional composition after spray coating, and FIG. 2 is an enlarged picture (400 times) of a panel surface of a cathode ray tube according to the above embodiment.
상기 도면에 의해서도 알 수 있듯이 본 발명의 조성물에 의한 음극선관은 패널 외면에 형성된 피막이 요철의 입자 및 거칠기가 조절되어 촉감이 부드러운 면을 가지며 음극선관을 켰을 때 반작러림 현상이 나타나지 않는 효과가 있다.As can be seen from the drawings, the cathode ray tube according to the composition of the present invention has an effect that the film formed on the outer surface of the panel has uneven grains and roughness by controlling the roughness, and the surface of the cathode ray tube does not appear when the cathode ray tube is turned on.
Claims (2)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1019910011784A KR930010267B1 (en) | 1991-07-11 | 1991-07-11 | Method of making a coating membrane of crt |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1019910011784A KR930010267B1 (en) | 1991-07-11 | 1991-07-11 | Method of making a coating membrane of crt |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| KR930003207A KR930003207A (en) | 1993-02-24 |
| KR930010267B1 true KR930010267B1 (en) | 1993-10-16 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| KR1019910011784A KR930010267B1 (en) | 1991-07-11 | 1991-07-11 | Method of making a coating membrane of crt |
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| Country | Link |
|---|---|
| KR (1) | KR930010267B1 (en) |
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1991
- 1991-07-11 KR KR1019910011784A patent/KR930010267B1/en not_active IP Right Cessation
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| Publication number | Publication date |
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| KR930003207A (en) | 1993-02-24 |
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