KR100236351B1 - Fluorescent film for color cathode ray tube - Google Patents

Fluorescent film for color cathode ray tube Download PDF

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Publication number
KR100236351B1
KR100236351B1 KR1019970009080A KR19970009080A KR100236351B1 KR 100236351 B1 KR100236351 B1 KR 100236351B1 KR 1019970009080 A KR1019970009080 A KR 1019970009080A KR 19970009080 A KR19970009080 A KR 19970009080A KR 100236351 B1 KR100236351 B1 KR 100236351B1
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South Korea
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phosphor
color
pigment
fluorescent film
panel
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KR1019970009080A
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Korean (ko)
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KR19980073659A (en
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이경호
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구자홍
엘지전자주식회사
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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
    • H01J29/02—Electrodes; Screens; Mounting, supporting, spacing or insulating thereof
    • H01J29/10—Screens on or from which an image or pattern is formed, picked up, converted or stored
    • H01J29/18—Luminescent screens
    • H01J29/20—Luminescent screens characterised by the luminescent material
    • 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
    • H01J29/02—Electrodes; Screens; Mounting, supporting, spacing or insulating thereof
    • H01J29/10—Screens on or from which an image or pattern is formed, picked up, converted or stored
    • H01J29/18—Luminescent screens
    • H01J29/28—Luminescent screens with protective, conductive or reflective layers
    • 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
    • H01J29/02—Electrodes; Screens; Mounting, supporting, spacing or insulating thereof
    • H01J29/10—Screens on or from which an image or pattern is formed, picked up, converted or stored
    • H01J29/18—Luminescent screens
    • H01J29/30—Luminescent screens with luminescent material discontinuously arranged, e.g. in dots, in lines
    • H01J29/32—Luminescent screens with luminescent material discontinuously arranged, e.g. in dots, in lines with adjacent dots or lines of different luminescent material, e.g. for colour television

Abstract

본 발명은 칼라브라운관의 판넬내면에 형성되는 형광체에 안료량을 적당히 배합하여 형성시키고, 판넬외면에는 투명코팅층을 형성하여 다크틴트글래스를 사용한 것과 동등한 콘트라스트를 유지하면서 휘도를 향상시키는 형광체에 관한 것으로, 이에 따른 기술적 구성은, 칼라브라운관의 판넬내면에 3색 형광체층이 형성된 것에 있어서, 녹형광체층에 부착되는 안료량이 녹형광체 중량비로 0.01∼0.05% 이고, 적형광체층에 첨가되는 안료량이 적형광체 중량비로 0.2∼0.8% 이고, 청형광체층에 부착되는 안료량이 청형광체 중량비로 4.0∼8.0% 조성되어 이루어짐을 특징으로 하는 칼라브라운관용 형광막에 관한 기술이다.The present invention relates to a phosphor which is formed by appropriately mixing the amount of pigment in the phosphor formed on the inner surface of the panel of the color brown tube, and forming a transparent coating layer on the outer surface of the panel to maintain the same contrast as that of using dark tint glass. According to this technical configuration, when the three-color phosphor layer is formed on the inner surface of the color-brown tube, the amount of pigment attached to the green phosphor layer is 0.01 to 0.05% by weight of the green phosphor, and the amount of pigment added to the red phosphor layer is red phosphor weight ratio. It is 0.2 to 0.8%, and the pigment | dye adhering to a blue fluorescent substance layer is a technique with respect to the fluorescent film for color-brown tubes characterized by consisting of 4.0 to 8.0% by weight of a blue fluorescent substance weight ratio.

Description

칼라브라운관용 형광막{Fluorescent film for color cathode ray tube}Fluorescent film for color cathode ray tube}

본 발명은 칼라브라운관의 형광체막에 관한 것으로, 특히 판넬내면에 형성시키는 형광체에 안료량을 적당히 배합함과 함께 판넬외면에 투명코팅층을 형성하여 다크틴트 판넬을 사용한 것과 동등한 콘트라스트를 유지하면서 휘도를 향상시키는 것에 적합한 형광막에 관한 것이다.The present invention relates to a phosphor film of a color brown tube, and in particular, an appropriate amount of pigment is added to the phosphor formed on the inner surface of the panel, and a transparent coating layer is formed on the outer surface of the panel to improve brightness while maintaining the same contrast as that of the dark tint panel. It relates to a fluorescent film suitable for making.

도 1은 일반적인 칼라브라운관의 형광면 구조를 나타낸 단면도로써, 블랙매트릭스(2)가 형성된 판넬(1)의 각 칼라화소영역에 녹형광체층(3-1), 청형광체층(3-2), 적형광체층(3-3)의 3색 형광체층(3)이 형성된다.FIG. 1 is a cross-sectional view showing a fluorescent surface structure of a general color brown tube, in which a green phosphor layer 3-1, a blue phosphor layer 3-2, and a red are formed in each color pixel region of a panel 1 on which a black matrix 2 is formed. The three-color phosphor layer 3 of the phosphor layer 3-3 is formed.

상기 종래의 칼라브라운관은 콘트라스트 향상을 위하여 글래스투과율이 40% 이하인 다크틴트글래스를 사용하고, 형광면 형성시에 사용하는 적, 청형광체에도 동일한 색을 반사하고, 그외 색은 흡수하도록 안료가 부착된 형광체를 사용하고 있다.The conventional color brown tube uses a dark tint glass having a glass transmittance of 40% or less to improve contrast, and reflects the same color to red and blue phosphors used in forming a fluorescent surface, and to which other pigments are absorbed. I'm using.

여기서 사용되는 형광체에 부착되어지는 안료의 양은 적형광체의 경우 형광체의 양에 대하여 0.03-0.06% 정도, 청형광체의 경우 0.8-1.2% 정도이다.The amount of pigment attached to the phosphor used here is about 0.03-0.06% with respect to the amount of phosphor in the case of red phosphor and about 0.8-1.2% in the case of blue phosphor.

녹형광체의 경우에는 안료를 부착하여 사용하지 않는다.In the case of a green phosphor, a pigment is not used.

도 2는 기존의 형광체층 형성시 공정도를 나타낸 것으로, 블랙메트릭스가 형성된 판넬내면을 순수로 세척하여 이물질을 제거한 후 PVA 용액을 주성분으로 하는 프리코트(Precoat)액을 도포하고 탈수, 건조시킨다.Figure 2 shows a process diagram when forming a conventional phosphor layer, after washing the inner surface of the panel formed black matrix with pure water to remove foreign matters, the precoat (pricoat) mainly composed of PVA solution is applied, dehydrated, and dried.

이어서 PVA 용액과 감광제 및 계면활성제 등에 현탁된 녹형광체 슬러리를 회전하는 판넬내면에 주입하여 도포하고, 회전하는 판넬을 기울여서 과잉의 현탁액을 제거한 후 건조한다.Subsequently, a green phosphor slurry suspended in a PVA solution, a photosensitive agent, a surfactant, and the like is injected and applied to a rotating panel inner surface, and the rotating panel is tilted to remove excess suspension and dried.

그리고 섀도우마스크를 판넬에 끼워서 노광하여 광경화시켜 물에 불용인 상태로 만든다.Then, the shadow mask is inserted into the panel and exposed to light to make it insoluble in water.

이어서 마스크를 판넬에서 때어낸후 순수를 사용하여 판넬내면을 현상, 건조하여 녹(G)형광체층을 완성한다.Subsequently, after removing the mask from the panel, the inner surface of the panel is developed and dried using pure water to complete a rust (G) phosphor layer.

이어서 청형광체 슬러리와 적형광체 슬러리를 각각 상기한 녹형광체층 형성과 동일한 과정의 번복을 거쳐 3색 형광체층(3)을 얻은 후 판넬을 건조하고 필밍액인 에멀젼 또는 락카를 사용하여 도포하고 탈수, 건조하여 필밍막을 형성한다.Subsequently, the blue phosphor slurry and the red phosphor slurry were each subjected to the same process as the above-described formation of the green phosphor layer to obtain a three-color phosphor layer 3, and then the panel was dried and applied using an emulsion or lacquer as a filming solution, and dehydrated. It dries to form a film.

그러나 상기한 종래 기술에 의한 다크틴트클래스를 사용한 칼라브라운관은 글래스 투과율이 낮아진 만큼 콘트라스트는 향상되지만 휘도가 떨어지는 단점이 있다.However, the color brown tube using the dark tint class according to the related art has a disadvantage in that the contrast is improved as the glass transmittance is lowered but the luminance is lowered.

본 발명은 상기한 문제점을 해결하기 위해 안출한 것으로, 판넬내면에 사용되는 형광체에 크기가 작은 안료가 다량 부착된 적, 청형광체와 코발트 그린 계통의 안료가 부착된 녹형광체를 사용하여 세미틴트글래스에 도포하고, 판넬외면에 투명 코팅액을 도포함으로써 다크틴트판넬을 사용한 것과 같은 콘트라스트를 유지하면서 휘도를 향상시키는데 적합한 형광막을 제공하는데 그 목적이 있다.The present invention has been made to solve the above problems, semi-tint glass using a red, blue phosphor and a cobalt green pigment attached to the phosphor, a large amount of small pigment attached to the phosphor used on the inner surface of the panel The present invention has a purpose of providing a fluorescent film suitable for improving the brightness while maintaining the same contrast as that of using a dark tint panel by coating on the surface and applying a transparent coating liquid on the outer surface of the panel.

도 1은 종래의 스크린 형광면 형성도1 is a conventional screen forming a fluorescent surface

도 2는 종래의 스크린 형광면 형성공정도Figure 2 is a conventional screen fluorescent screen forming process

도 3은 본 발명에 따른 판넬외면 코팅 순서도3 is a flow chart of the panel outer surface according to the present invention

도 4는 본 발명에 의한 스크린 형광면 형성도Figure 4 is a screen fluorescent surface formation according to the present invention

도 5는 본 발명에 의한 콘트라스트를 나타낸 그래프5 is a graph showing the contrast according to the present invention

도면의 주요부분에 대한 부호의 설명Explanation of symbols for main parts of the drawings

1 : 판넬 2 : 블랙메트릭스1: Panel 2: Black Metrics

3 : 3색 형광체층 3-1: 녹형광체층3: three-color phosphor layer 3-1: green phosphor layer

3-2: 청형광체층 3-3: 적형광체층3-2: blue phosphor layer 3-3: red phosphor layer

4 : 투명코팅층4: transparent coating layer

상기한 목적을 달성하기 위한 본 발명은 칼라브라운관의 판넬내면에 3색 형광체층이 형성된 것에 있어서, 녹형광체의 안료부착량이 녹형광체 중량비로 0.01∼0.05% 이고, 적형광체의 안료부착량이 적형광체 중량비로 0.2∼0.8% 이고, 청형광체의 안료부착량이 청형광체 중량비로 4∼8% 조성되어 형성됨을 특징으로 하는 형광막으로 구성된다.In the present invention for achieving the above object is a three-color phosphor layer formed on the inner surface of the panel of the color brown tube, the pigment deposition amount of the green phosphor is 0.01 to 0.05% by weight of the green phosphor, the pigment deposition amount of the red phosphor is red phosphor weight ratio It is 0.2 to 0.8%, and the pigment | dye adhesion amount of a blue fluorescent substance is comprised by 4-8% by weight ratio of a blue fluorescent substance, and is comprised, The fluorescent film characterized by the above-mentioned.

또한 본 발명은 상기 판넬외면에 투명코팅액이 코팅되어 이루어진다.In another aspect, the present invention is made by coating a transparent coating liquid on the panel outer surface.

본 발명은 3색 형광체층을 형성함에 있어서는 도 2와 같은 동일 공정을 통하여 제조하되, 3색 형광체 슬러리 중에는 상기와 같은 안료 부착량을 갖는 조성물로 구성된다.The present invention is prepared through the same process as shown in FIG. 2 in forming the three-color phosphor layer, but is composed of a composition having the pigment adhesion amount as described above in the three-color phosphor slurry.

이와 같이 본 발명은 통상적으로 형광체에 부착되는 안료량보다 과량부착된 청형광체는 코발트블루계통의 안료를 사용하고, 적형광체에는 산화철안료를 사용한다.As such, the present invention generally uses a cobalt blue pigment as the blue phosphor attached in excess of the amount of the pigment attached to the phosphor, and an iron oxide pigment as the red phosphor.

또한 기존의 녹형광체의 경우는 휘도저하가 있으므로 안료를 부착하지 않고 있으나, 본 발명은 녹형광체에 코발트그린계통의 안료를 부착하고 있음이 상이하다.In addition, the conventional green phosphor does not adhere to the pigment because there is a decrease in brightness, the present invention is different from the cobalt green pigment attached to the green phosphor.

이렇게 만들어진 3색 형광체층을 투과율 50% 정도의 세미틴트글래스 내면에 형성한다.The tricolor phosphor layer thus formed is formed on the inner surface of the semi tint glass having a transmittance of about 50%.

그리고 이렇게 브라운관이 만들어진 후 판넬외면에는 도 3과 같이 세록스를 사용하여 연마, 세정하고, 80∼100℃로 예열시켜 Sb, SnO, SiO를 가진 하층액을 스핀코팅하고 다시 예열하여 상층액을 스프레이 코팅한 다음 150∼200℃로 소성함으로써 도 4와 같이 완성된 투명코팅층(4)을 갖는 코팅 형성면이 얻어진다.After the CRT is made, the outer surface of the panel is polished and cleaned using Cerox as shown in FIG. 3, preheated to 80 to 100 ° C., spin-coated the lower layer solution having Sb, SnO, and SiO, and preheated again to spray the supernatant. By coating and then firing at 150-200 ° C., a coating-forming surface having a completed transparent coating layer 4 as shown in FIG. 4 is obtained.

이상에서와 같이 기존은 콘트라스트 향상을 위해 글래스 투과율이 40% 이하인 다크틴트글라스를 사용함으로 인하여 휘도가 저하되는 문제가 있으나, 본 발명에 의한 형광체를 사용하여 글래스 투과율이 50% 부근인 세미틴트글라스에 형광면을 형성하고, 외면에 투명 코팅액을 코팅함에 따라 내면에서는 발광면에서의 콘트라스트를 향상시키고, 외면에서는 외부광에 의한 콘트라스트가 저하되는 것을 막아 콘트라스트를 향상시키는 것이다.As described above, there is a problem in that the luminance is lowered due to the use of dark tint glass having a glass transmittance of 40% or less for improving the contrast, but the semi-tint glass having a glass transmittance of 50% is used by the phosphor according to the present invention. By forming a fluorescent surface and coating a transparent coating solution on the outer surface, the contrast on the light emitting surface is improved on the inner surface, and the contrast is prevented from being reduced on the outer surface by external light.

따라서, 다크틴트글래스를 사용하지 않으면서도 동일한 콘트라스트를 유지할 수 있으며, 이로 인한 글래스 투과율 차로써 휘도향상을 꾀하는 것이다.Therefore, the same contrast can be maintained without using the dark tint glass, and thus the luminance is improved by the glass transmittance difference.

본 발명에 따른 휘도는 표 1 및 도 5와 같이 향상됨을 알 수 있다.It can be seen that the luminance according to the present invention is improved as shown in Table 1 and FIG.

기존의 다크틴트글래스Conventional Dark Tint Glass 본 발명의 세미틴트글래스Semi tint glass of the present invention 투과율(%)Transmittance (%) 3838 5050 휘도(f1)Brightness (f1) 3535 4343 콘트라스트Contrast 100100 118118 ※ 콘트라스트는 다크틴트글래스를 100으로 했을 때이다.※ Contrast is when dark tint glass is 100.

이상에서와 같이 형광체에 콘트라스트를 향상시키기 위해 고농도로 안료를 부착하고 외면에 투명코팅층을 형성시킴으로써 콘트라스트는 다크틴트글래스를 사용하는 것과 동일하면서도 향상된 휘도를 갖는 칼라브라운관용 형광막을 얻게 된다.As described above, by attaching the pigment at a high concentration to improve the contrast on the phosphor and forming a transparent coating layer on the outer surface, the contrast is the same as that of using dark tint glass, but the fluorescent film for color tube with improved luminance is obtained.

Claims (5)

브라운관 판넬 내면에 블랙 매트릭스가 형성되고,A black matrix is formed on the inside of the CRT panel, 상기 블랙 매트릭스 사이에 안료가 부착된 3색(적, 녹, 청) 형광체로 도포된 형광막에 있어서,In the fluorescent film coated with a three-color (red, green, blue) phosphor with a pigment attached between the black matrix, 녹형광체에 부착되는 안료량이 녹형광체 중량비로 0.01∼0.05% 이고, 적형광체층에 첨가되는 안료량이 적형광체 중량비로 0.2∼0.8% 이고, 청형광체에 부착되는 안료량이 청형광체 중량비로 4.0∼8.0% 조성되어 이루어짐을 특징으로 하는 칼라브라운관용 형광막.The amount of pigment adhered to the green phosphor is 0.01 to 0.05% by weight of the green phosphor, the amount of pigment added to the red phosphor layer is 0.2 to 0.8% by the red phosphor weight, and the amount of pigment attached to the blue phosphor is 4.0 to 8.0% by the blue phosphor weight Color-brown fluorescent film fluorescent film characterized in that the composition is made. 제1항에 있어서,The method of claim 1, 적형광체에 부착되는 안료가 산화철계이고, 녹형광체에 부착되는 안료가 코발트 그린계이고, 청형광체에 부착되는 인료가 코발트 블루계인 것을 특징으로 하는 칼라브라운관용 형광막.A pigment attached to a red phosphor is iron oxide, a pigment attached to a green phosphor is cobalt green, and a phosphor attached to a blue phosphor is cobalt blue. 삭제delete 제1항에 있어서,The method of claim 1, 판넬 외면에 투명코팅층이 형성된 것임을 특징으로 하는 칼라브라운관용 형광막.Fluorescent film for color tube, characterized in that the transparent coating layer is formed on the panel outer surface. 제1항에 있어서,The method of claim 1, 3색 형광막이 세미틴트글래스 판넬내면에 형성된 것임을 특징으로 하는 칼라브라운관용 형광막.A fluorescent film for color brown tube, characterized in that the three-color fluorescent film is formed on the inner surface of the semi-tint glass panel.
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Publication number Priority date Publication date Assignee Title
KR100552626B1 (en) * 1999-01-13 2006-02-17 엘지전자 주식회사 Method manufacturing phosphor layer in color CRT

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KR920012395A (en) * 1990-12-18 1992-07-27 김정배 Method of producing pigmented phosphor

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Publication number Priority date Publication date Assignee Title
KR920012395A (en) * 1990-12-18 1992-07-27 김정배 Method of producing pigmented phosphor

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100552626B1 (en) * 1999-01-13 2006-02-17 엘지전자 주식회사 Method manufacturing phosphor layer in color CRT

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