KR930012010B1 - Fluorescent film composition for color cathode-ray tube - Google Patents

Fluorescent film composition for color cathode-ray tube Download PDF

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KR930012010B1
KR930012010B1 KR1019900020416A KR900020416A KR930012010B1 KR 930012010 B1 KR930012010 B1 KR 930012010B1 KR 1019900020416 A KR1019900020416 A KR 1019900020416A KR 900020416 A KR900020416 A KR 900020416A KR 930012010 B1 KR930012010 B1 KR 930012010B1
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dye
composition
ray tube
fluorescent film
color cathode
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KR920012383A (en
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최성봉
이상원
신경식
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삼성전관 주식회사
김정배
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    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
    • C09K11/00—Luminescent, e.g. electroluminescent, chemiluminescent materials
    • C09K11/06—Luminescent, e.g. electroluminescent, chemiluminescent materials containing organic luminescent materials

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  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
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  • Compositions Of Macromolecular Compounds (AREA)
  • Formation Of Various Coating Films On Cathode Ray Tubes And Lamps (AREA)

Abstract

A fluorescent screen forming composition of CRT comprises a binder, a photosensitive agent, pure water and a dyestuff. The dyestuff is added into the photosensitive resin compsn. or the undercoating liquor compsn. Pref. the dyestuff is at least one selected from group of anthraquinone, azo, carbonium, xanthine and phthalein; and its using amount is 0.01-75 wt.% with respect to the total amt. of the compsn. The composition used in the inner surface of the panel of CRT improves a contrast and colour purity..

Description

칼라 음극선관의 형광막 형성용 조성물Composition for Forming Fluorescent Film of Color Cathode Ray Tube

제1도는 통상적인 형광막 제조 공정도.1 is a conventional fluorescent film production process chart.

제2도는 종래의 염료코팅 처리된 음극선관.2 is a conventional dye-coated cathode ray tube.

제3도는 본 발명에 따라 염료코팅 처리된 음극선관.3 is a dye-coated cathode ray tube according to the present invention.

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

1 : 패널 2 : 염료막1 panel 2 dye film

3 : 블랙 매트릭스3: black matrix

본 발명은 칼라 음극선관의 형광막 형성용 조성물에 관한 것으로서, 더욱 상세하게는 음극선관의 패널 내면에 염료 처리를 함으로써 콘트라스트를 향상시키고 외관의 품위를 높인 칼라 음극선관의 형광막 형성용 조성물에 관한 것이다.The present invention relates to a composition for forming a fluorescent film of a color cathode ray tube, and more particularly, to a composition for forming a fluorescent film of a color cathode ray tube which improves contrast and enhances appearance by dyeing the inner surface of a panel of a cathode ray tube. will be.

칼라 음극선관은 천연 색감을 나타내기 위하여 음극선관의 패널 내면에 적색(R), 녹색(G), 청색(B)의 형광체를 도트 혹은 스트라이프상으로 규칙 배열하고 전자선을 주사하여 각 칼라의 화상을 재생시키도록 되어 있다. 그런데 이 칼라 음극선관의 재생된 영상의 콘트라스트는 강한 외광에 의해 저하되는 결점을 가지고 있다.In order to show the natural color, the color cathode ray tube regularly arranges phosphors of red (R), green (G) and blue (B) on the inner surface of the cathode ray tube in the form of dots or stripes, and scans the image of each color by scanning electron beams. It is supposed to be regenerated. However, the contrast of the reproduced image of this color cathode ray tube has the drawback which is reduced by strong external light.

콘트라스트를 향상시키기 위해 가시광 영역에서 거의 일정한 투과율을 갖는 유리판을 패널 외면에 배치하거나, 패널 유리에 Nd2O3를 포함시켜 음극선관을 제조하는 등의 방법이 공지되어 있다.In order to improve the contrast, there is known a method of disposing a glass plate having a substantially constant transmittance in the visible light region on the outer surface of the panel, or manufacturing a cathode ray tube by including Nd 2 O 3 in the panel glass.

그러나 이러한 방법에서는 콘트라스트는 향상되지만 화면의 밝기는 불가피하게 감소하는 문제가 있거나, 콘트라스트의 현저한 개선은 기대할 수 없다는 결점이 있다.However, this method has a problem that the contrast is improved but the brightness of the screen is inevitably reduced, or a significant improvement in the contrast cannot be expected.

이를 극복하기 위해 음극선관의 패널 외면에 염료를 함유하는 칼라 코팅 조성물을 도포하여 콘트라스트를 향상시킨 기술이 일본특개 평 1-251545호와 일본특개 평 1-320742호에 기재되어 있다.In order to overcome this problem, a technique of improving contrast by coating a color coating composition containing dye on the outer surface of a cathode ray tube is described in Japanese Patent Application Laid-Open Nos. 1-251545 and 1-320742.

상술한 공보에서는 음극선관의 대전방지조성물에 안트라퀴논계 염료, 아조계 염료, 크산틴계 염료 등을 첨가시킨후 이 조성물을 패널 외면에 도포하여 막을 형성함으로써 각 염료의 필터 효과에 의해 화면의 콘트라스트를 향상시키고 있다.In the above publication, an anthraquinone dye, an azo dye, a xanthine dye, and the like are added to an antistatic composition of a cathode ray tube, and then the composition is applied to the outer surface of the panel to form a film. It is improving.

그런데 상기 막처리는 CRT 제작 완료 후 패널 외면에 도포하여 실시하여 때문에 제2도에서와 같이 패널 외면에 막이 형성된 음극선관을 제공해주면 된다. 이와 같이 패널의 외면에 막처리가 되면 CRT 사용도중 스크래치 현상으로 막이 벗겨져 완전한 필터 효과를 얻을 수 없고 외관상 보기 흉한 상태가 유발되어 CRT의 품위를 저하시키는 문제가 있다.However, since the film treatment is applied to the outer surface of the panel after the CRT fabrication is completed, the cathode ray tube having a film formed on the outer surface of the panel may be provided as shown in FIG. As such, when the film is treated on the outer surface of the panel, the film is peeled off due to the scratch phenomenon during the use of the CRT, and thus, a perfect filter effect is not obtained and an unsightly appearance is caused, thereby degrading the quality of the CRT.

본 발명의 목적은 상기 문제점을 감안하여 패널 외면에 대한 막처리 효과를 그대로 얻으면서도 외관의 품위를 향상시킬 수 있는 칼라 음극선관의 형광막 형성용 조성물을 제공하는 것이다.SUMMARY OF THE INVENTION In view of the above problems, an object of the present invention is to provide a composition for forming a fluorescent film of a color cathode ray tube, which is capable of improving the appearance of an appearance while still obtaining a film treatment effect on an outer surface of a panel.

상기 목적을 달성하기 위하여 본 발명의 칼라 음극선관의 형광막 형성용 조성물은 결합제, 감광제, 순수등으로 이루어진 칼라 음극선관의 형광막 형성용 조성물에 있어서, 상기 조성물이 염료를 포함하여 조성되는 점에 특징이 있다.In order to achieve the above object, the composition for forming a fluorescent film of a color cathode ray tube of the present invention is a composition for forming a fluorescent film of a color cathode ray tube made of a binder, a photosensitive agent, a pure water, etc., wherein the composition comprises a dye. There is a characteristic.

특히 상기 염료가 블랙 매트릭스 형성 초기 과정에 도포하는 감광성 수지 조성물이나 형광체 도포전 블랙 매트릭스 상부에 도포하는 하도액 조성물중 어느 하나에 첨가되어 조성되는 경우가 바람직하며 또한 상기염료는 안트라퀴논계 염료, 아조계 염료, 카르보늄계 염료, 크산틴계 염료 및 프탈레인계 염료이며 그 양은 전체 조성물의 0.01∼75%인 것이 바람직하다.In particular, the dye is preferably added to any one of the photosensitive resin composition to be applied in the initial process of forming the black matrix, or to the undercoating solution composition to be applied to the upper part of the black matrix before the phosphor is applied. The dye is an anthraquinone-based dye, It is preferable that it is a crude dye, a carbonium dye, a xanthine dye, and a phthalein dye, and the quantity is 0.01-75% of the whole composition.

제1도는 통상적인 형광막 제조 공정도인데 공정중 감광물질 도포단계와 하도액 도포단계에서, 감광성 조성물이나 하도액 조성물에 염료를 첨가하여 패널에 도포함으로써 본 발명의 형광막을 제조할 수 있다.FIG. 1 is a conventional manufacturing process of a fluorescent film. In the process of applying a photosensitive material and applying a coating solution, the fluorescent film of the present invention may be prepared by adding a dye to the photosensitive composition or the coating composition and applying it to a panel.

감광성 조성물은 크롬 화합물 등의 감광제와 폴리비닐알콜(PVA)등의 결합제 및 순수 등으로 이루어지는데, 이는 노광에 의해 점착성을 가지며, 도트 혹은 스트라이프의 소정형상을 갖는 블랙 매트릭스를 형성하기 위한 기초액이라고 할 수 있다. 이 감광성 조성물은 블랙 매트릭스 형성시 수산화나트륨(NaOH), 불산(HF)수용액, 순수 등을 사용하여 패널에 부착된 불순물을 제거하고 패널을 건조시킨 후, 패널 내면에 도포한다.The photosensitive composition is composed of a photosensitive agent such as a chromium compound, a binder such as polyvinyl alcohol (PVA), pure water, and the like, which is a base liquid for forming a black matrix having adhesiveness by exposure and having a predetermined shape of dots or stripes. can do. This photosensitive composition is applied to the inner surface of the panel after removing impurities on the panel by using sodium hydroxide (NaOH), hydrofluoric acid (HF) solution, pure water, and the like to form a black matrix.

또한 형광막 제조시 형광체의 부착력을 강화시켜 주기 위하여 블랙 매트릭스가 형성된 패널의 내면에는 하도액을 도포한다. 이 하도액은 접착력이 강해서 형광체가 패널 내면에 충분한 접착력으로 부착될 수 있도록 도와 주며 일반적으로 순수, 8% 폴리비닐알코올(PVA) 및 5% 중크롬산 암모늄(ADC)을 주성분으로 하여 제조된다.In addition, in order to enhance the adhesion of the phosphor in the manufacture of the fluorescent film, a coating solution is applied to the inner surface of the panel on which the black matrix is formed. The undercoat solution has strong adhesion to help the phosphor to be attached to the inner surface of the panel with sufficient adhesion, and is generally prepared based on pure water, 8% polyvinyl alcohol (PVA) and 5% ammonium dichromate (ADC).

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

본 발명의 형광막 형성용 조성물은 상기 감광성 조성물 혹은 하도액 조성물중 어느 한 조성물에 안트라퀴논계 염료, 아조계 염료, 카르보늄계 염료, 크산틴계 염료 및 프탈레인계 염료중 어느 하나 혹은 그 이상을 각 특정 파장영역에 따라 최적한 것으로 선택, 첨가하여 이루어진다. 상기 염료의 첨가량은 염료의 분자량, 비중에 따라 조절되며 조성물 총량의 0.01∼75중량%가 적당하다. 첨가량이 0.01중량% 보다 적으면 염료의 필터 효과를 기대할 수 없고 75중량% 보다 많으면 막의 투과율과 부착력이 감소되어 실용적이지 못하다.In the composition for forming a fluorescent film of the present invention, any one or more of an anthraquinone dye, an azo dye, a carbonium dye, a xanthine dye, and a phthalein dye may be added to any one of the photosensitive composition or the bottom coat composition. It is made by selecting and adding an optimal one according to each specific wavelength region. The addition amount of the dye is adjusted according to the molecular weight and specific gravity of the dye, and 0.01 to 75% by weight of the total amount of the composition is appropriate. If the amount is less than 0.01% by weight, the filter effect of the dye cannot be expected. If the amount is more than 75% by weight, the permeability and adhesion of the membrane are reduced, which is not practical.

얻어진 본 발명의 형광막 제조용 조성물이 블랙 매트릭스(3) 형성을 위한 감광성 조성물인 경우에는 패널(1) 세정 이후에, 형광체 부착력 강화를 위한 하도액 조성물인 경우에는 블랙 매트릭스(3) 형성 이후에, 통상의 방법에 따라 패널(1) 내면에 도포하고 건조한다.After the obtained composition for producing a fluorescent film of the present invention is a photosensitive composition for forming the black matrix (3), after cleaning the panel (1), after the black matrix (3) is formed, in the case of the bottom coating composition for strengthening the phosphor adhesion It is applied to the inner surface of the panel 1 and dried according to a conventional method.

상기 방법에 따라 형광막을 제조하면 제3도에서 나타내는 바와 같이 형광막 패널(1) 내면에 염료막(2)이 형성된다.When the fluorescent film is manufactured according to the above method, the dye film 2 is formed on the inner surface of the fluorescent film panel 1 as shown in FIG.

본 발명에 따르면 감광성 조성물이나 하도액 조성물에 염료를 포함시켜 코팅 처리하기 때문에 염료막을 제조하기 위한 별도의 공정이 필요치 않아 공정 자체가 간단하다고 할 수 있다. 또한 패널의 내면에 염료막이 형성되기 때문에 CRT 사용중 긁힘에 의한 특성 변화가 전혀 없으면서도 염료에 의한 필터 효과는 유효하여서 콘트라스트가 15∼20% 향상되고 색순도가 높아지게 되었으며, 외관의 품위 또한 한층 높아지게 되었다.According to the present invention, since the dye is included in the photosensitive composition or the undercoating solution, the coating process is not necessary, and thus, the process itself is simple since no separate process for preparing the dye film is required. In addition, since the dye film is formed on the inner surface of the panel, the filter effect by the dye is effective without any change in the characteristics due to scratches during the use of the CRT, resulting in a 15 to 20% increase in contrast, a high color purity, and an improved appearance.

Claims (4)

결합제, 감광제, 순수 등으로 이루어진 칼라 음극선관의 형광막 형성용 조성물에 있어서, 상기 조성물이 염료를 포함하여 조성되는 것을 특징으로 하는 칼라 음극선관의 형광막 형성용 조성물.A composition for forming a fluorescent film of a color cathode ray tube made of a binder, a photosensitive agent, pure water, and the like, wherein the composition comprises a dye. 제1항에 있어서, 상기 염료가 블랙 매트릭스 형성초기 과정에 도포되는 감광성 수지 조성물 또는 형광체 도포전 블랙 매트릭스 상부에 도포되는 하도액 조성물중 어느 하나에 첨가되어 조성되는 것을 특징으로 하는 칼라 음극선관의 형광막 형성용 조성물.The fluorescence of a color cathode ray tube according to claim 1, wherein the dye is added to any one of the photosensitive resin composition applied during the initial process of forming the black matrix or the undercoat composition applied to the upper part of the black matrix before applying the phosphor. Film forming composition. 제1항에 있어서, 상기 염료가 안트라퀴논계 염료, 아조계 염료, 카르보늄계 염료, 크산틴계 염료 및 프탈레인계 염료중 적어도 하나인 것을 특징으로 하는 칼라 음극선관의 형광막 형성용 조성물.The composition for forming a fluorescent film of a color cathode ray tube according to claim 1, wherein the dye is at least one of an anthraquinone dye, an azo dye, a carbonium dye, a xanthine dye, and a phthalein dye. 제1항 내지 제3항중 어느 한 항에 있어서, 상기 염료의 양이 전체조성물 양을 기준하여, 0.01∼75중량%인 것을 특징으로 하는 칼라 음극선관의 형광막 제조용 조성물.The composition for producing a fluorescent film of a color cathode ray tube according to any one of claims 1 to 3, wherein the amount of the dye is 0.01 to 75% by weight based on the total amount of the composition.
KR1019900020416A 1990-12-12 1990-12-12 Fluorescent film composition for color cathode-ray tube KR930012010B1 (en)

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WO2002075765A1 (en) * 2001-03-21 2002-09-26 Koninklijke Philips Electronics N.V. Method of producing a screen for a color display tube

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KR19980020317A (en) * 1996-09-06 1998-06-25 손욱 Photosensitive resin composition and method of forming pattern using same

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2002075765A1 (en) * 2001-03-21 2002-09-26 Koninklijke Philips Electronics N.V. Method of producing a screen for a color display tube

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