KR100300408B1 - A filming solution for forming a fiming layer in CRT - Google Patents

A filming solution for forming a fiming layer in CRT Download PDF

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KR100300408B1
KR100300408B1 KR1019980049992A KR19980049992A KR100300408B1 KR 100300408 B1 KR100300408 B1 KR 100300408B1 KR 1019980049992 A KR1019980049992 A KR 1019980049992A KR 19980049992 A KR19980049992 A KR 19980049992A KR 100300408 B1 KR100300408 B1 KR 100300408B1
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film
filming
forming
photoacid generator
firing
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KR20000033224A (en
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강영종
임익철
유승준
허은하
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김순택
삼성에스디아이 주식회사
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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
    • CCHEMISTRY; METALLURGY
    • C09DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09KMATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
    • C09K11/00Luminescent, e.g. electroluminescent, chemiluminescent materials
    • C09K11/08Luminescent, e.g. electroluminescent, chemiluminescent materials containing inorganic luminescent materials
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01JELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J29/00Details of cathode-ray tubes or of electron-beam tubes of the types covered by group H01J31/00
    • H01J29/02Electrodes; Screens; Mounting, supporting, spacing or insulating thereof
    • H01J29/10Screens on or from which an image or pattern is formed, picked up, converted or stored
    • H01J29/18Luminescent screens
    • H01J29/20Luminescent screens characterised by the luminescent material

Abstract

목적 : 컬러 브라운관(Cathode Ray Tube : CRT)의 필르밍막 형성에 사용되는 필르밍 액에 관한 것으로, 특히 광산 발생제(光酸 發生劑)를 포함하는 필르밍 액을 사용하여 필르밍막을 형성함으로써, 필르밍막 형성후의 소성 공정에서 소성 온도를 낮추고, 생산성을 향상시킬 수 있는 필르밍 액에 관한 것이다.PURPOSE: The present invention relates to a filming solution used to form a film of a color cathode ray tube (CRT), particularly a filming film containing a photoacid generator to form a film. The present invention relates to a peeling liquid capable of lowering the firing temperature and improving productivity in the firing step after forming the film.

구성 : 필르밍액은 부틸 메타크릴레이트(Butyl methacrylate)와 같은 아크릴 에멀젼을 주성분으로 사용하며, 기타 폴리비닐 알코올, 수산화 암모늄, 글리세린, 과산화수소수 등의 첨가제 및 광산 발생제를 포함하고 있다. 여기서, 광산 발생제로는 트리 페닐설포늄 트리프레이트와 같이 빛을 받을 경우에 산을 발생하는 물질로서 트리플레이트 계열의 것을 사용할 수 있다.Composition: Filming solution uses acrylic emulsion such as butyl methacrylate as its main component, and contains other polyvinyl alcohol, ammonium hydroxide, glycerin, hydrogen peroxide and other photoacid generators. Here, as the photoacid generator, a triflate-based material may be used as a substance that generates an acid when it receives light such as triphenylsulfonium triflate.

효과 : 광산 발생제를 포함하는 필르밍액을 사용하여 필르밍막을 형성함으로써, 필르밍막 형성후의 소성공정에서 기존의 필르밍액을 그대로 이용하면서도 소성온도를 80 ℃ 이상 감소시켜, 소송로 사용 경비를 절감시키고 생산성을 향상시킬 수 있다.Effect: By forming a filming film using a filming solution containing a photoacid generator, in the firing process after the filming film formation, while using the existing filming solution as it is, the firing temperature is reduced by more than 80 ℃, to reduce the cost of use by lawsuit Productivity can be improved.

Description

컬러 브라운관의 필르밍막 형성용 필르밍액{A filming solution for forming a fiming layer in CRT}A filming solution for forming a fiming layer in CRT}

본 발명은 컬러 브라운관(Cathode Ray Tube : CRT)의 필르밍막 형성에 사용되는 필르밍액에 관한 것으로, 특히 광산 발생제를 포함하는 필르밍액을 사용하여 필르밍막을 형성함으로써, 필르밍막 형성후의 소성 공정에서 소성 온도를 낮추고, 생산성을 향상시킬 수 있는 컬러 브라운관의 필르밍막 형성용 필르밍액에 관한 것이다.BACKGROUND OF THE INVENTION Field of the Invention The present invention relates to a peeling liquid used for forming a film of a color cathode ray tube (CRT), and more particularly, in a baking process after forming a film by forming a film using a filming solution containing a photoacid generator. It is related with the peeling liquid for film-forming film-forming film | membrane which can lower baking temperature and can improve productivity.

일반적으로 칼라 음극선관의 형광막은 전자총에서 방출되는 전자빔 에너지를 광 에너지로 변환시키는 곳으로, 형광체의 여기 발광에 의해서 화상을 구현하며, 블랙 매트릭스 성형공정과 녹색, 청색, 적색 형광패턴 형성공정을 통하여 만들어진다.In general, a fluorescent film of a color cathode ray tube converts electron beam energy emitted from an electron gun into light energy, and realizes an image by excitation emission of a phosphor, and a black matrix forming process and a green, blue and red fluorescent pattern forming process. Is made.

이와 같이 형성된 형광막은 형광막의 휘도를 향상시키고, 형광막의 전위강하를 방지하고, 이온 충격에 약한 형광면이 타는 것을 방지하기 위하여 진공상태에서 알루미늄을 증발 확산시켜 얇은 알루미늄막을 만들어 주게 된다.The fluorescent film thus formed improves the luminance of the fluorescent film, prevents the potential drop of the fluorescent film, and prevents burning of the fluorescent surface that is weak to ion bombardment, thereby forming a thin aluminum film by evaporating and diffusing aluminum under vacuum.

그러나, G, B, R 형광체 스트라이프가 형성된 형광막은 스트라이프 내의 형광체 구멍 뚫림으로 인하여 편평한 면을 만들어 주지 못하기 때문에 여기에 직접 알루미늄을 증착 시키면 알루미늄이 형광체를 뚫고 들어가므로 알루미늄막이 거울로서의 효과가 감소된다.However, since the phosphor film formed with the G, B, and R phosphor stripes does not form a flat surface due to the perforation of the phosphor in the stripe, the deposition of aluminum directly reduces the effect of the aluminum film as a mirror since aluminum penetrates the phosphor. .

따라서 일반적으로 칼라 음극선관에 있어서는 이러한 현상을 방지하기 위하여, 형광체 사이의 구멍을 막기 위한 특수한 도포 물질을 형광막 위에 도포하게 된다. 즉, 형광체 층을 패널 내면에 도포한 후, 필르밍액을 도포하여 중간막을 형성함으로써 알루미늄 증착을 매끄럽게 하고, 형광체 사이의 구멍에 의한 알루미늄막의 요철 현상을 완화하여 알루미늄막의 반사효율을 높여 휘도를 향상시킬 수 있게 하는 것이다.Therefore, in general, in the color cathode ray tube, in order to prevent such a phenomenon, a special coating material for blocking the holes between the phosphors is coated on the phosphor film. That is, after the phosphor layer is applied to the inner surface of the panel, a film is applied to form an intermediate film to smooth the deposition of aluminum, to mitigate the unevenness of the aluminum film caused by the holes between the phosphors, and to increase the reflection efficiency of the aluminum film to improve luminance. To make it possible.

이와 같은 중간막은 형광체에 나쁜 영향을 미치지 않고 전자총의 전자 방출을 방해하지 않는 물질로 하지 않으면 안되므로 열분해 가능한 유기 피막으로 형성되며, 이 유기 피막을 형성하는 공정을 필르밍이라 한다.Since such an interlayer film must be made of a material that does not adversely affect the phosphor and does not interfere with electron emission of the electron gun, it is formed into a thermally decomposable organic film, and the process of forming the organic film is called filming.

또한, 이러한 필르밍으로 형성된 유기 피막 위에 알루미늄을 진공 증착하고 그후 불필요한 유기물을 완전히 소산하기 위하여 소성 공정을 하여야 하며, 이 소성 공정에서는 알루미늄이 부착된 형광면을 400 - 450℃로 가열한다.In addition, aluminum is vacuum-deposited on the organic film formed by this filming, and then, a firing process is required to completely dissipate unnecessary organic substances. In this firing process, the aluminum-attached fluorescent surface is heated to 400-450 ° C.

이와 같은 필르밍막을 형성하는 종래의 기술은 크게 수성계 아크릴 에멀젼을 사용하는 것과 유성계인 락카를 사용하는 2 가지 방법으로 대별된다.Conventional techniques for forming such filming films are roughly divided into two methods using an aqueous acrylic emulsion and an oil based lacquer.

수성계 아크릴 에멀젼을 사용하는 방법에서는 폴리비닐 알코올(Poly vinyl alcohol), 아크릴 에멀젼, 글리세린, 수산화암모늄, 과산화수소수 등을 첨가하여 사용하고 있다. 이 경우 알루미늄막 형성이 끝난 후, 형광막과 필르밍막의 유기물을 분해하기 위하여 400 - 450 ℃ 의 온도 범위에서 소성하지만, 이후 패널(panel)과 펀널(funnel)의 결합을 위하여 다시 400 - 450 ℃ 의 온도 범위에서 프릿트 실링하는 공정이 있기 때문에 결국 막은 이중 소성 처리된다.In the method of using an aqueous acrylic emulsion, polyvinyl alcohol, an acrylic emulsion, glycerin, ammonium hydroxide, hydrogen peroxide, etc. are added and used. In this case, after the aluminum film is formed, it is baked at a temperature in the range of 400 to 450 ° C. to decompose the organic material of the fluorescent film and the film, but then again 400 to 450 ° C. for the combination of the panel and funnel. Since there is a process for frit sealing in the temperature range of, the film is eventually double fired.

이때 아크릴 에멀젼은 대부분 MMA(메틸 메타크릴레이트), BMA(부틸 메타크릴레이트), EA(에틸 아크릴레이트) 등으로 구성되어 있고, 이들은 조기 분해 온도가 300℃ 이상으로 되어 기존 방식의 소성 공정에서 열 분해될 수 있지만, 일반적으로 소성 공정에 요구되는 온도가 낮을수록 에너지 낭비가 없어 경제적이고, 또 고온에 견딜 수 있는 설비를 갖추지 않아도 되는 등 여러 가지 이점을 얻게 된다.At this time, the acrylic emulsion is mostly composed of MMA (methyl methacrylate), BMA (butyl methacrylate), EA (ethyl acrylate), and the like, and these have a preliminary decomposition temperature of 300 ° C or higher, which leads to heat in a conventional firing process. Although it can be decomposed, in general, the lower the temperature required for the firing process, there is no energy waste, and economical and there is no need to have a facility that can withstand high temperatures.

따라서, 본 발명은 상기와 같은 종래의 문제점을 해결하기 위하여 안출된 것으로서, 컬러 브라운관에서 형광막의 중간막인 필르밍막을 아크릴 에멀젼계 필르밍액으로 필르밍막을 형성함에 있어서, 낮은 온도로 소성하여도 열 분해되는 컬러 브라운관의 필르밍막 형성용 필르밍액을 제공함에 그 목적이 있다.Accordingly, the present invention has been made in order to solve the above-mentioned conventional problems, in forming a filming film, which is an intermediate film of a fluorescent film in a color CRT, with an acrylic emulsion-based filming solution, thermal decomposition even when fired at a low temperature. It is an object of the present invention to provide a peeling liquid for forming a film of a color CRT tube.

상기 목적을 실현하기 위하여, 본 발명은 아크릴 에멀젼의 열분해 온도를 50 - 80℃ 이상 감소시킬 수 있는 광산 발생제를 포함하는 컬러 브라운관의 필르밍막 형성용 필르밍액을 제공한다.In order to realize the above object, the present invention provides a film solution for forming a film of a film of a color CRT tube containing a photoacid generator capable of reducing the thermal decomposition temperature of an acrylic emulsion by 50 to 80 ° C or more.

본 발명에 관련된 필르밍액은 부틸 메타크릴레이트(Butyl methacrylate)와 같은 아크릴 에멀젼을 주성분으로 사용하며, 기타 폴리비닐 알코올, 수산화암모늄, 글리세린, 과산화수소수 등의 첨가제 및 광산 발생제를 포함하고 있다.The blooming liquid related to this invention uses acrylic emulsion, such as butyl methacrylate, as a main component, and contains other polyvinyl alcohol, ammonium hydroxide, glycerin, hydrogen peroxide, etc. additives, and a photoacid generator.

여기서, 광산 발생제(photo acid generater)로는 트리페닐설포늄 트리플레이트(Triphenyl sulfonium triflate)와 같이 빛을 받을 경우에 산을 발생하는 물질로서 트리플레이트 계열의 것을 사용할 수 있다.Here, as a photo acid generator, a triflate-based material may be used as a material generating an acid when it receives light, such as triphenyl sulfonium triflate.

상기 광산 발생제의 함량은 사용되는 아크릴 에멀젼을 기준으로 하여 0.5- 3 wt%인 것이 바람직하다.The content of the photoacid generator is preferably 0.5-3 wt% based on the acrylic emulsion used.

아크릴 에멀젼은 대부분 MMA(메틸 메타크릴레이트), BMA(부틸 메타크릴레이트), EA(에틸 아크릴레이트) 등으로 구성되어 있고, 이들은 조기 분해 온도가 300℃ 이상으로 되는 것이나, 산이 존재하는 경우에는 열 분해 온도를 50 - 80 ℃ 이상 낮출 수가 있다.Acrylic emulsions are mostly composed of MMA (methyl methacrylate), BMA (butyl methacrylate), EA (ethyl acrylate), and the like, and these have an early decomposition temperature of 300 ° C or higher, but when acid is present, The decomposition temperature can be lowered by 50-80 캜 or more.

본 발명에서는 첨가된 광산 발생제가 빛을 받았을 때에 산을 석출하여 아크릴 에멀젼에 산이 함유되게 함으로써 소성 공정 중의 소성 온도를 감소시키게 되는 것이다.In the present invention, when the added photoacid generator receives light, the acid is precipitated so that the acid is contained in the acrylic emulsion, thereby reducing the firing temperature during the firing step.

이하, 본 발명의 바람직한 실시예를 상세히 설명한다.Hereinafter, preferred embodiments of the present invention will be described in detail.

본 실시예에서는 광산 발생제를 사용하여 아크릴 에멀젼의 열분해 온도가 감소하는 것을 설명하고 있다.In this embodiment, the pyrolysis temperature of the acrylic emulsion is reduced by using a photoacid generator.

실시예Example

t-부틸 메타크릴레이트 20g과 폴리글리콜메틸이소아세테이트 80g에 광산 발생제로서 트리플레이트 0.5g을 넣고 용해시켜 필르밍액 시료를 만들고, 이것을 자외선에 조사하여 산이 석출되게 하였다. 얻어진 필르밍액 시료를 열중량분석(thermal gravimetric analysis)을 통해 분석한 결과, 열분해 온도가 180℃에서 90℃로 감소하였다.20 g of t-butyl methacrylate and 80 g of polyglycol methyl isoacetate were added to dissolve 0.5 g of triflate as a photoacid generator to prepare a sample of a blooming solution, which was irradiated with ultraviolet rays to cause acid to precipitate. The obtained peeling liquid sample was analyzed by thermal gravimetric analysis, and the pyrolysis temperature was reduced from 180 ° C to 90 ° C.

상기 광산 발생제는 자외선에 노출되었을 때에 산을 석출하여 아크릴 에멀젼이 산을 함유하게 하는 것이며, 이에 따라 상기 필르밍액의 소성 온도가 낮춰지게 되는 것이다.The photoacid generator precipitates acid when exposed to ultraviolet rays so that the acrylic emulsion contains acid, thereby lowering the firing temperature of the blooming liquid.

결국 본 발명에 관련된 필르밍액은 열 분해 온도가 광산 발생제를 첨가하지 않았을 때에 비해 50%의 감축 효과를 나타내고 있음을 알 수 있으며, 따라서 기존의 컬러 브라운관 제조 공정에서 필르밍막 형성을 위한 소성 공정의 소성 온도가 300℃에서 그 이하로 대폭 낮춰지게 된다.As a result, it can be seen that the peeling liquid according to the present invention exhibits a 50% reduction in thermal decomposition temperature compared with the case where no photoacid generator is added. Therefore, the calcining process for forming the film is formed in the conventional color CRT manufacturing process. The firing temperature is drastically lowered to less than 300 ° C.

이상과 같이 본 발명은 광산 발생제를 포함하는 필르밍액을 사용하여 필르밍막을 형성함으로써, 필르밍막 형성후의 소성 공정에서 기존의 필르밍액을 그대로 이용하면서도 소성 온도를 80 ℃ 이상 감소시켜, 소성에 요구되는 에너지 비용을 절감시키게 됨은 물론 생산성도 향상할 수 있는 효과가 있다.As described above, the present invention forms a peeling film using a filming solution containing a photoacid generator, thereby reducing the firing temperature by 80 ° C. or more while using the existing filming solution as it is in the baking step after forming the filming film, and required for firing. In addition to reducing energy costs, productivity can also be improved.

Claims (3)

부틸 메타크릴레이트를 포함하는 아크릴 에멀젼을 주성분으로 하고, 광산발생제 및 과산화수소수를 포함하는 컬러 브라운관의 필르밍막 형성용 필르밍액.A peeling liquid for forming a film of a film of a color CRT tube containing, as a main component, an acrylic emulsion containing butyl methacrylate and containing a photoacid generator and hydrogen peroxide solution. 제 1 항 에 있어서, 폴리비닐알콜을 더 포함하는 것을 특징으로 하는 컬러브라운관의 필르밍막 형성용 필르밍액.The film-forming film-forming film-forming film according to claim 1, further comprising polyvinyl alcohol. 제 1 항 또는 제 2 항에 있어서, 상기 광산 발생제는 트리플레이트 계열인 것을 특징으로 하는 컬러 브라운관의 필르밍막 형성용 필르밍액.The peeling liquid for forming a film of a film of a color CRT tube according to claim 1 or 2, wherein the photoacid generator is a triflate series.
KR1019980049992A 1998-11-20 1998-11-20 A filming solution for forming a fiming layer in CRT KR100300408B1 (en)

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KR20040008817A (en) * 2002-07-19 2004-01-31 한경덕 Coating solution composition for coating the phosphor screen of the cathode ray tube

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KR100716764B1 (en) * 2005-02-28 2007-05-14 주식회사 디에프씨 Pilleuming liquid composition for a color picture tube

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US5374500A (en) * 1993-04-02 1994-12-20 International Business Machines Corporation Positive photoresist composition containing photoacid generator and use thereof

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5374500A (en) * 1993-04-02 1994-12-20 International Business Machines Corporation Positive photoresist composition containing photoacid generator and use thereof

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20040008817A (en) * 2002-07-19 2004-01-31 한경덕 Coating solution composition for coating the phosphor screen of the cathode ray tube

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