KR920003289B1 - A method cleaning the painting membrane in the internal side of panel edge for color picture tube - Google Patents

A method cleaning the painting membrane in the internal side of panel edge for color picture tube Download PDF

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KR920003289B1
KR920003289B1 KR1019900002831A KR900002831A KR920003289B1 KR 920003289 B1 KR920003289 B1 KR 920003289B1 KR 1019900002831 A KR1019900002831 A KR 1019900002831A KR 900002831 A KR900002831 A KR 900002831A KR 920003289 B1 KR920003289 B1 KR 920003289B1
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panel edge
panel
polyvinyl alcohol
hydrogen peroxide
color
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KR1019900002831A
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Korean (ko)
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KR910016032A (en
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이전수
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삼성전관 주식회사
김정배
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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
    • H01J9/38Exhausting, degassing, filling, or cleaning vessels

Abstract

A washing process for coated film on the inside of panel edge of color TV set is characterized by washing base layer coating material containing polyvinyl alcohol and fluorescent layer coating liquid with hydrogen peroxide (H2O2) so that polyvinyl alcohol and hydrogen peroxide are reacted and decomposed. This method can prevent shadow mask holes from being blocked off by fluffing of aluminium deposition film caused by residual coated film, and also it prevent screen image deterioration from over-injection by electron gun.

Description

칼라 수상관의 패널 가장자리 내측면 도포막 세정방법Cleaning method of coating film on inner side of panel edge of color water pipe

제1a도-e도는 블랙 매트릭스막을 형성시키는 공정을 설명하기 위한 도면.1A-E are views for explaining a process of forming a black matrix film.

제2도는 본 발명에 관계되는 카라 수상관의 패널 가장자리 내측면 도포막 세정장치를 나타내는 개략도.2 is a schematic view showing a panel edge inner surface coating film cleaning apparatus of a collar water pipe according to the present invention.

본 발명은 칼라 수상관의 패널 내면에 블랙 매트릭스(Black matrix)막 및 형성광체층을 형성시킨 후에 패널 내면 측면부에 피착된 불필요하고 비노광된 도포막을 분해시켜 세정토록한 칼라 수상관의 패널 가장자리 내측면 도포막 세정방법에 관한 것이다.According to the present invention, after forming a black matrix film and a forming body layer on the inner surface of the color receiving tube, the unnecessary and unexposed coating film deposited on the side surface of the panel is decomposed to clean the inside of the panel edge of the color receiving tube. A side coating film cleaning method.

일반적으로 칼라 수상관, 예컨데 새도우 마스크형 칼라 수상관은 외장기의 일부를 구성하는 패널 내면에 R. G. B의 3색 형광체를 도트(dot) 형상 스트라이프(strip) 형상으로 한 형광체 화소를 규칙적으로 배열하여 형광면을 구성하고 있으며, 더욱이 근래에는 상기한 화소사이에 비발광성 흡수 물질층을 형성하는 것이 널리 알려져 있다.In general, a color receiver, for example, a shadow mask-type collar receiver, is arranged by regularly arranging phosphor pixels in which a three-color phosphor of RG B in a dot-shaped stripe form on the inner surface of a panel forming a part of the exterior device. A fluorescent surface is constituted, and more recently, it is widely known to form a layer of non-light-emitting absorbent material between the above pixels.

이와 같이 형광면을 형성시켜 비발광성 광 흡수물질층을 갖는 구조, 즉 블랙 매트릭스(Black Matrix)형 칼라 수상관으로 불리는 칼라 수상관을 보다 상세히 설명하면 다음과 같다.As described above, a structure having a non-luminescent light absorbing material layer to form a fluorescent surface, that is, a color water tube called a black matrix type color water tube will be described in detail.

제1a도-e도는 블랙 매트릭스막을 형성시키는 공정을 설명하기 위한 도면으로서, 패널(1)의 내면에 감광성수지, 폴리비닐 알콜과 중크롬산 암모늄등으로 이루어지는 감광성 수지용액의 균일한 혼합물을 a와 같이 도포하여 하도층(2)을 형성한다.1A-E are views for explaining a process of forming a black matrix film, wherein a uniform mixture of a photosensitive resin solution made of photosensitive resin, polyvinyl alcohol, ammonium dichromate, etc. is applied to the inner surface of the panel 1 as shown in a. The undercoat layer 2 is formed.

그후 블랙 매트릭스의 광 흡수층이 형성되어야 할 위치에 새도우 마스크를 통하여 b와 같이 노광한후 현상하여 미노광부를 제거시키면 c와 같은 감광층(2a)만이 남는다Thereafter, when the light absorbing layer of the black matrix is to be formed and exposed as b through a shadow mask and then developed to remove the unexposed part, only the photosensitive layer 2a such as c remains.

이 감광층(2a)은 습윤성을 갖게 되므로 d의 도시와 같이 입자지름 0.5-0.8㎛의 흑연가루(3)를 광 흡수물질로 하여 스프레이로 흩뿌려 놓고 건조시킨다.Since the photosensitive layer 2a has wettability, as shown in d, graphite powder 3 having a particle diameter of 0.5-0.8 μm is scattered with a spray as a light absorbing material and dried.

그리고, 건조후 온수로 세정하면 e에 나타낸 바와 같이 노광이 된 부분 즉, 상기한 감광층(2a)에만 흑연가루(3)가 부착되어 블랙 매트릭스 패턴을 형성하는 흑연막(3a)이 남게 된다.After washing with warm water after drying, the graphite powder 3 is attached only to the exposed portion, that is, the photosensitive layer 2a as shown in e, thereby leaving the graphite film 3a forming a black matrix pattern.

이어서, 블랙 매트릭스가 형성되지 않은 패널 내면에 슬러리상의 녹, 청, 적생 형광체를 도포하고 색상 패턴에 맞는 해당 새도우 마스크를 개재하여 노광한후 비노광부를 세정시켜 소망하는 형상의 칼라패턴을 얻는다.Subsequently, slurry-like green, blue, and red phosphors are applied to the inner surface of the panel where no black matrix is formed, exposed through a corresponding shadow mask matching the color pattern, and then the non-exposed part is washed to obtain a color pattern having a desired shape.

다시, 상기한 R. G. B 패턴상에 유기수지피막을 형성한 후 알루미늄막을 증착시키고, 이어서 상기한 유기수지 피막을 소성에 의한 열분해로 제거함으로써 칼라 수상관의 형광면이 형성된다.Then, an organic resin film is formed on the above R. G. B pattern, and an aluminum film is deposited, and then the organic resin film is removed by thermal decomposition by sintering to form a fluorescent surface of the color receiver.

그런데, 상기한 바와 같은 칼라 수상관의 형광면 형성공정에 있어서, 비노광부의 패널유효화면 구역이외의 부분, 즉 패널 가장자리 내측면위에 도포된 하도층과 형광체층은 별도의 세정장치에서 세정하게 된다.By the way, in the fluorescent surface forming process of the color receiving tube as described above, the portion of the non-exposed portion other than the panel effective screen region, that is, the undercoat layer and the phosphor layer applied on the inner surface of the panel edge is cleaned by a separate cleaning device.

상기한 바와 같은 세정장치는 제2도에 나타낸 바와 같이 패널(1)은 로울러(A)에 의해 지지되고, 물튀김 방지판(B)의 일측에 설치된 공급관(C)내로 물을 가장자리 내측면으로 공급하여 상기한 하도층과 형광체층이 도포된 도포막(D)을 세정토록 하는방법이 채택되고 있다.In the cleaning apparatus as described above, as shown in FIG. 2, the panel 1 is supported by the roller A, and water is supplied to the inner side of the edge into the supply pipe C installed on one side of the splash prevention plate B. The method of supplying and washing | cleaning the coating film D to which the said undercoat layer and fluorescent substance layer were apply | coated is employ | adopted.

그러나, 상기한 바와 같은 종래 패널 가장자리 내측면의 도포층세정방법은, 주성분으로 되는 폴리비닐 알콜이 물에 의해 용해되는 시간이 길어서 장시간 세정하지 않으면 하도액 및 형광액이 잔존하게 되어, 칼라 수상관을 동작시켰을 때 전자총으로부터 전자비임의 과주사 및 산란에 의해 유효화면외에 부착된 형광체가발광하여 수상관으로서의 품질을 저하시키는 한 요인이 되고 있을뿐 만 아니라, 이후의 고정인 유기수지 피막 도포 및 알루미늄막 증착후에 행하여지는 소성공정에서 상기한 알루미늄막에 발포가 발생되어 떨어지므로써 새도우 마스크의 구멍을 막아 화질을 저하시키는 등의 문제점이 있다.However, the coating layer cleaning method of the inner side of the panel edge as described above has a long time that the polyvinyl alcohol, which is a main component, is dissolved by water, and if it is not washed for a long time, the undercoating liquid and the fluorescent liquid remain, and the color receiving tube When the light is activated, phosphors attached to the outside of the effective screen are emitted from the electron gun due to the overscanning and scattering of the electron beam, and it is not only a factor in degrading the quality of the water tube, but also in the subsequent fixing of the organic resin film and aluminum. In the firing step performed after the film deposition, foaming occurs in the aluminum film, thereby causing a problem such as blocking the hole of the shadow mask to reduce image quality.

본 발명은 상기한 바와 같은 종래 기술의 문제점을 해결하기 위하여 안출된 것으로서, 본 발명의 목적은 패널 가장자리 내측면에 도포되는 형광체층의 주성분으로 되는 폴리비닐 알콜을 분해 세정하여 화절향상 및 불량율을 감소토록 한 칼라 수상관의 패널가장자리 내측면 도포막 세정방법을 제공하는데 있다.The present invention has been made to solve the problems of the prior art as described above, an object of the present invention is to decompose and clean the polyvinyl alcohol, which is the main component of the phosphor layer applied to the inner surface of the panel edge to reduce the improvement of flower buds and defective rate The present invention provides a method for cleaning a coating film on the inner surface of a panel edge of a color water tube.

상기한 바와같은 목적을 실현하기 위하여 본 발명은 패널 가장자리 내측면에 도포된 하도액 및 형광체액을 과산화수소(H2O2)로 세정하여 상기의 과산화수소와 폴리비닐 알콜이 다음 화학식에 따라 분해 되게 함으로써 세정효과를 향상시킴을 특징으로 하는 칼라 수상관의 패널 가장자리 내측면 도포액 세정방법을 제공한다.In order to achieve the above object, the present invention cleans the primer and phosphor solution applied to the inner surface of the panel edge with hydrogen peroxide (H 2 O 2) to decompose the hydrogen peroxide and polyvinyl alcohol according to the following formula. Provided is a method for cleaning a coating edge inner side surface coating liquid of a color receiver tube, characterized by an improvement.

(CH2CHOH)3+H2O2(CH2CHOH) 3 + H2O2

→H2O[O]+(CH2CHOH)3→ H 2 O [O] + (CH 2 CHOH) 3

이하, 본 발명의 실시예를 더욱 상세하게 설명하면 다음과 같다.Hereinafter, the embodiment of the present invention in more detail as follows.

폴리비닐 알콜이 주성분으로 되는 하도액을 패널내측면에 도포하고 노광한후 현상하여 감광층을 형성시킨 후 흑연가루를 도포하여 상기 감광층에만 흑연가루가 피착되도록 하여 블랙 매트릭스막을 형성한다.The undercoat liquid containing polyvinyl alcohol as a main component is applied to the inner surface of the panel, exposed and developed to form a photosensitive layer, and then coated with graphite powder to deposit graphite powder only on the photosensitive layer to form a black matrix film.

그리고, 블랙 매트릭스막이 형성된 다른 부분에 R. G. B로 각각 발광하는 형광체와 감광성수지, 폴리비닐 알콜등으로 이루어지는 혼합물을 도포하고 노광한후 현상하여 형광막을 형성한다.Then, a mixture of phosphors, photosensitive resins, polyvinyl alcohol, etc., each of which emits light of R. G. B, is applied to the other portions where the black matrix film is formed, exposed, and developed to form a fluorescent film.

그후 제2도에 도시한 바와 같은 세정장치에 패널을 장착시켜 공급관(C)내로 과산화수소(H2O2)를 분사해주어 패널(1) 가장자리 내측면에 도포된 하도액 및 형광체액의 도포막(D)에 함유된 포리비닐 알콜이 다음 화학식에 따라 반응하게 한다.Thereafter, the panel is mounted on the cleaning apparatus as shown in FIG. 2, and hydrogen peroxide (H 2 O 2) is injected into the supply pipe (C) to the coating film (D) of the undercoating liquid and the phosphor liquid applied to the inner surface of the edge of the panel (1). The polyvinyl alcohol contained is allowed to react according to the following formula.

[화학식][Formula]

(CH2CHOH)3+H2O2(CH2CHOH) 3 + H2O2

→H2O+[O]+(CH2CHOH)3→ H 2 O + [O] + (CH 2 CHOH) 3

상기 반응중에 과산화 수소에서 유리되는 활성산소[O]가 폴리비닐 알콜 ((CH2CHOH)3)과 반응하여 이를 분해시키게 되므로 완전히 도포막(D)이 세정된다.During the reaction, the active oxygen [O] liberated in hydrogen peroxide reacts with and decomposes the polyvinyl alcohol ((CH2CHOH) 3), thereby completely washing the coating film (D).

이때, 과산화수소(H2O2)의 도포전에 패널(1)의 온도가 높으면 주변에 이물형태의 불량이 발생되므로 과산화수소의 분해속도를 완만하게 하기 위하여는 냉각을 시킨후에 행함이 바람직하며, 이후에 순수로 세정하면 더욱 확실한 세정효과를 얻을 수 있다.In this case, if the temperature of the panel 1 is high before the application of hydrogen peroxide (H 2 O 2), foreign matter-like defects are generated in the surroundings, so that the decomposition rate of hydrogen peroxide is moderated. A more sure cleaning effect can be obtained.

이상 상세히 설명한 바와 같이 본 발명에 의하면 폴리비닐 알콜이 주성분으로 되는 하도층 및 형광체층이 패널 가장자리 내측면에 도포된 도포막을 세정함에 있어서, 과산화수소(H2O2)을 분사시켜 상기한 폴리비닐 알콜과 반응시켜 분해 세정 하므로써, 종래와 같이 도포막이 잔존하여 발생되는 알루미늄 증착막의 부풀음으로 인한 새도우 마스크의 구멍막힘과 전자총에서의 과다주사로 인한 화질저하등을 해결할 수 있다.As described in detail above, according to the present invention, in cleaning the coating film having the polyvinyl alcohol as a main component and the phosphor layer coated on the inner side of the panel edge, hydrogen peroxide (H2O2) is sprayed to react with the polyvinyl alcohol. By disassembling and cleaning, it is possible to solve the problem of clogging of the shadow mask due to the swelling of the aluminum deposition film generated due to the remaining coating film and deterioration in image quality due to overscanning in the electron gun.

Claims (1)

패널 가장자리 내측면에 도포된 하도액 및 형광체액을 과산화 수소(H2O2)로 세정하여 상기의 과산화수소와 폴리 비닐 알콜이 다음 화학식에 따라 분해되게 함으로써 세정효과를 향상시킴을 특징으로 하는 칼라 수상관의 패널 가장자리 내측면 도포막 세정방법.The panel of color receivers is characterized by improving the cleaning effect by washing the undercoating solution and the phosphor solution applied on the inner side of the panel with hydrogen peroxide (H2O2) to decompose the hydrogen peroxide and polyvinyl alcohol according to the following formula. Edge inner surface coating film cleaning method. [화학식][Formula] (CH2CHOH)3+H2O2(CH2CHOH) 3 + H2O2 →H2O+[O]+(CH2CHOH)3→ H 2 O + [O] + (CH 2 CHOH) 3
KR1019900002831A 1990-02-28 1990-02-28 A method cleaning the painting membrane in the internal side of panel edge for color picture tube KR920003289B1 (en)

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