KR100229708B1 - Manufacturing method of fluorescent surface for crt - Google Patents

Manufacturing method of fluorescent surface for crt Download PDF

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Publication number
KR100229708B1
KR100229708B1 KR1019970018667A KR19970018667A KR100229708B1 KR 100229708 B1 KR100229708 B1 KR 100229708B1 KR 1019970018667 A KR1019970018667 A KR 1019970018667A KR 19970018667 A KR19970018667 A KR 19970018667A KR 100229708 B1 KR100229708 B1 KR 100229708B1
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South Korea
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panel
layer
pigment
filter layer
cathode ray
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KR1019970018667A
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Korean (ko)
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KR19980083388A (en
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정해법
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구자홍
엘지전자주식회사
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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
    • H01J9/20—Manufacture of screens on or from which an image or pattern is formed, picked up, converted or stored; Applying coatings to the vessel
    • H01J9/22—Applying luminescent coatings
    • 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
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J2329/00—Electron emission display panels, e.g. field emission display panels
    • H01J2329/18—Luminescent screens
    • H01J2329/32—Means associated with discontinuous arrangements of the luminescent material
    • H01J2329/326—Color filters structurally combined with the luminescent material

Abstract

본 발명은 칼라음극선관의 형광막 제조방법에 관한 것으로, 특히 판넬 내측면에 형성되는 형광막의 제조시 녹,청,적 3색의 색소를 동시에 분산한 슬러리를 판넬 내면에 도포하여 음극선관의 콘트라스트와 휘도를 향상시키는 형광막 제조방법을 제공하는데 목적이 있다.The present invention relates to a method for manufacturing a fluorescent film of a color cathode ray tube. In particular, when manufacturing a fluorescent film formed on the inner surface of a panel, a slurry in which green, blue, and red pigments are dispersed at the same time is applied to an inner surface of a panel to improve contrast of a cathode ray tube. And to provide a fluorescent film manufacturing method for improving the brightness.

이를 실현하기 위하여 본 발명은 칼라 음극선관의 판넬 내면에 BM층이 형성되고, 상기 BM층이 형성된 판넬 내면과 형광체층 사이에 필터층을 형성하는 판넬의 형광면 제조방법에 있어서, 상기 필터층은 3색의 녹,청,적의 안료를 동시에 혼합 분산시킨 슬러리를 판넬내면에 도포함으로 이룰수 있다.In order to realize this, the present invention provides a BM layer formed on the inner surface of the panel of the color cathode ray tube, and in the method of manufacturing a fluorescent surface of a panel which forms a filter layer between the inner surface of the panel on which the BM layer is formed and the phosphor layer, the filter layer has three colors. This can be achieved by applying a slurry of green, blue and red pigments mixed on the inner surface of the panel.

Description

음극선관용 형광막 제조방법Method for manufacturing fluorescent film for cathode ray tube

본 발명은 음극선관용 형광막에 관한 것으로서, 특히 필터층을 갖는 형광면에 있어서 음극선관의 콘트라스트와 휘도를 향상시키기 위한 형광막 제조방법에 관한 것이다.BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fluorescent film for cathode ray tubes, and more particularly to a method for producing a fluorescent film for improving the contrast and brightness of a cathode ray tube in a fluorescent surface having a filter layer.

일반적인 칼라 음극선관의 구성을 살펴보면 도 1 에 도시된 바와같이 음극선관의 전면에 장착되는 판넬(1)과, 상기 판넬(1)의 내측에서 입사되는 전자빔의 색선별 기능을 갖는 섀도우마스크(6)와, 상기 섀도우마스크(8)를 고정 지지하고 있는 프레임(7)과, 상기 판넬(1)의 후면에 결합되어 내부를 진공상태로 유지하는 펀넬(2)과, 상기 펀넬(2)의 후방으로 후퇴되어 있는 관형상의 네크부(2a)와, 상기 네크부(2a) 내부에 장착되어 전자빔(3)을 방출하는 전자총(4)과, 상기 방출된 전자빔(3)에 작용되는 외부자계를 차단하기 위하여 프레임(7)에 조립되는 인너실드(8)와, 상기 펀넬(2)의 외측을 둘러싸며 전자빔을 편향시키는 편향요크(5)로 구성된다.Referring to the configuration of a general color cathode ray tube, as shown in FIG. 1, a panel 1 mounted on the front side of the cathode ray tube and a shadow mask 6 having a color discrimination function of an electron beam incident from the inside of the panel 1 are provided. And a frame 7 fixedly supporting the shadow mask 8, a funnel 2 coupled to the rear surface of the panel 1 to keep the interior in a vacuum state, and a rear of the funnel 2; A retracted tubular neck portion 2a, an electron gun 4 mounted inside the neck portion 2a to emit an electron beam 3, and blocking an external magnetic field acting on the emitted electron beam 3 The inner shield 8 is assembled to the frame 7 and the deflection yoke 5 surrounds the outer side of the funnel 2 and deflects the electron beam.

그리고 판넬(1)의 내면에는 형광면이 형성되어 있는데, 이 형광면은 도 2 에 나타낸 바와같이 블랙메트릭스층(BM층;12) 및 각각의 R,G,B 형광체층(4R,4G,4B)과 알루미늄막(15)으로 형성되어 전자빔이 적,녹,청의 형광체를 발광시켜 화상을 얻게된다.In addition, a fluorescent surface is formed on an inner surface of the panel 1, and the fluorescent surface includes a black matrix layer (BM layer) 12 and respective R, G, B phosphor layers 4R, 4G, and 4B as shown in FIG. It is formed of an aluminum film 15 and the electron beam emits red, green, and blue phosphors to obtain an image.

이러한 종래의 형광면의 제조방법은 BM층(12)이 형성된 판넬(1)에 녹,청,적 3색의 무기 안료층을 형성하고 그위에 안료가 부착되지 않은 형광체를 사용해서 형광면을 형성하게 되는데 이는 안료에 의해 외광이 흡수되기 때문에 콘트라스트가 향상되는 장점이 있다.In the conventional method of manufacturing a fluorescent surface, an inorganic pigment layer of three colors of green, blue, and red is formed on the panel 1 on which the BM layer 12 is formed, and the fluorescent surface is formed by using a phosphor that does not have a pigment attached thereon. This has the advantage that the contrast is improved because the external light is absorbed by the pigment.

그러나 이 경우 안료부착 형광체 입자가 여러층으로 중첩되어 형광면이 형성되기 때문에 형광체 입자의 발광의 일부가 안료에 흡수되어 음극선관의 동작시 휘도가 약 3∼5% 저하되는 문제점이 있었다.However, in this case, since the phosphor-attached phosphor particles overlap in several layers to form a phosphor surface, a part of the light emission of the phosphor particles is absorbed by the pigment, which causes a problem in that the luminance of the cathode ray tube is reduced by about 3 to 5%.

본 발명은 상기한 바와같은 종래 기술의 문제점을 해결하기 위하여 발명된 것으로 형광체층과 판넬 내면 사이에 적,청,녹 3색 혼합의 필터층을 도포 건조하여 형성시킴으로서, 제조공정을 간단히 하고 형광체 각각의 발광을 선명하게 구현하는데 목적이 있다.The present invention has been invented to solve the problems of the prior art as described above by forming a filter layer of red, blue, green tricolor mixture between the phosphor layer and the inner surface of the panel to form a dry, thereby simplifying the manufacturing process and each of the phosphors The purpose is to clearly implement light emission.

도 1 은 일반적인 음극선관의 개략도.1 is a schematic view of a typical cathode ray tube.

도 2 는 종래 형광막의 구조도.2 is a structural diagram of a conventional fluorescent film.

도 3 은 본 발명의 형광막 구조를 나타낸 것으로서,Figure 3 shows the structure of the fluorescent film of the present invention,

(가)는 BM층 위에 필터층이 도포된 상태도.(A) is a state where the filter layer was apply | coated on the BM layer.

(나)는 필터층 위에 형광체가 도포된 상태도.(B) is a state where fluorescent substance was apply | coated on the filter layer.

(다)는 형광막 구성이 완료된 상태도.(C) is a state in which the fluorescent film configuration is completed.

* 도면의 주요 부분에 대한 부호의 설명 *Explanation of symbols on the main parts of the drawings

101 : 패널102 : BM층101 panel 102: BM layer

103 : 필터층105 : 알루미늄막103: filter layer 105: aluminum film

본 발명을 첨부도면을 참조하여 이하에서 상세히 설명한다.The present invention will be described in detail below with reference to the accompanying drawings.

본 발명은 도 3 에 나타낸 바와같이 BM층(102)이 형성된 판넬내면(101)과 형광체층(R,G,B) 사이에 필터층(103)을 갖는 형광면에 있어서, 미립자의 안료 녹색, 청색, 적색 3색의 안료를 혼합 분산한 슬러리를 판넬 내면에 도포, 건조해서 필터층을 형성하는 것이다.As shown in FIG. 3, the present invention relates to a phosphor surface having a filter layer 103 between the panel inner surface 101 on which the BM layer 102 is formed and the phosphor layers R, G, and B. The slurry which mixed and disperse | distributed the red three color pigment is apply | coated to an inner surface of a panel, and is dried, and forms a filter layer.

도면중 미설명 부호 105는 알루미늄막을 나타낸다.In the figure, reference numeral 105 denotes an aluminum film.

본 발명의 안료는 미립자의 녹색안료로서 상품명 디히록사이드 칼라그린(ZnO, Ti02, NiO,CoO)를 순수와 계면활성제로 분산시킨 분산액과, 청색 안료로서 코발트 블루(CoO, Ai2O3)를 순수와 계면활성제로 분산시킨 분산액과, 적색안료로서 제2산화철(Fe2O3)를 순수와 계면활성제로 분산시킨 분산액이다. 본 발명의 필터층은 녹색, 청색, 적색 안료의 3색 혼합해서 3색형광면 발광부의 위치에 광학특성(투과특성과 반사특성)을 갖는 필터로서 1회로 형성한다.The pigment of the present invention is a dispersion obtained by dispersing trade name dihydroxy colorgreen (ZnO, Ti0 2 , NiO, CoO) as pure water and a surfactant as fine green pigment, and cobalt blue (CoO, Ai 2 O 3 ) as a blue pigment. the second iron oxide (Fe 2 O 3) having a dispersion, a red pigment dispersion with pure water and the surface active agent is a dispersion obtained by dispersing in pure water and surface active agent. The filter layer of the present invention is formed in one cycle as a filter having an optical characteristic (transmission characteristic and reflection characteristic) at the position of the tricolor fluorescent surface emitting portion by mixing three colors of green, blue and red pigments.

이하 본 발명에 의한 칼라 형광면의 형성방법 실시예를 설명하면 다음과 같다.Hereinafter, an embodiment of a method for forming a color fluorescent surface according to the present invention will be described.

도 3 의 (가)에서와 같이 판넬(101)의 내면에 광흡수층인 블랙매트릭스막(102)을 형성하고, 그 위에 미립자 안료의 분산액을 다음의 조성의 안료를 전면에 도포하여 건조시키고 필터층(103)을 형성한다.As shown in FIG. 3A, a black matrix film 102, which is a light absorbing layer, is formed on the inner surface of the panel 101, and the dispersion of the particulate pigment is coated thereon with a pigment having the following composition on the entire surface to be dried and the filter layer ( 103).

◎조성 : 녹색안료 25.1 중량%, 청색안료 25.8 중량%, 적색안료 20.0 중량%.◎ Composition: Green pigment 25.1 wt%, Blue pigment 25.8 wt%, Red pigment 20.0 wt%.

◎필터층용 조성에 희석조합◎ Dilution combination in filter layer composition

녹색안료 5∼10중량%, 청색안료 10∼20중량%, 적색안료 2∼8중량%.Green pigment 5-10 wt%, Blue pigment 10-20 wt%, Red pigment 2-8 wt%.

◎필터층 안료 슬러리 배합비율◎ Filter layer pigment slurry mixture ratio

녹색안료 희석액 0.5∼2, 청색안료 희석액 1.5∼3.5, 적색안료 희석액 1.Green pigment diluent 0.5-2, Blue pigment dilution 1.5-3.5, Red pigment dilution 1.

상기의 필터층용 조성에 희석조합으로 각 안료의 농도가 상기의 각 하한치보다 낮을 경우에는 광흡수율이 저하되어 콘트라스트 효과가 떨어지며, 상기의 각 상한치보다 높을 경우 광흡수율은 향상되어 큰트라스 효과는 향상되나 휘도가 크게 저하된다.When the concentration of each pigment is lower than the lower limit of the composition by dilution combination in the composition for the filter layer, the light absorption rate is lowered and the contrast effect is lowered. When the pigment concentration is higher than the upper limit value, the light absorption rate is improved and the large trass effect is improved. However, the brightness is greatly reduced.

그리고 역시 상기의 필터층 안료 슬러리 배합비율도 적색 안료 희석액을 기준으로 했을 때 녹,청색의 안료 배합비율이 상기의 각 상한치 비율보다 높으면 분산성이 저하되고, 도포성이 나빠져 층 균일성이 나빠지고, 휘도를 저하시킨다. 반면 상기의 각 하한치 비율보다 낮으면 분산성이 향상되나 도포시 거품이 발생하고, 층이 얇아 콘트라스트 효과가 저하된다.In addition, when the blending ratio of the filter layer pigment slurry is also based on the red pigment diluent, when the green and blue pigment blending ratio is higher than the upper limit ratio, the dispersibility is lowered, the applicability is poor, and the layer uniformity is deteriorated. Decreases the brightness. On the other hand, if it is lower than each lower limit ratio above, dispersibility is improved, but foaming occurs during application, and the layer is thin, so that the contrast effect is lowered.

본 발명의 방법으로 필터층을 형성시키면 특별한 장치가 불필요하고 종래의 도포장치로 통상의 방법으로 도포하고 건조하는 것에 의해 용이하게 필터층을 형성하는 것이 가능하다.If the filter layer is formed by the method of the present invention, a special device is unnecessary and it is possible to easily form the filter layer by applying and drying in a conventional manner with a conventional coating device.

또한 동시에 각 안료의 배합율을 조정함으로서 필터층의 광투과 스펙트럼을 선별하는 것이 가능하다.At the same time, it is possible to select the light transmission spectrum of the filter layer by adjusting the blending ratio of each pigment.

이와같이 필터층(103)을 형성한후 도 3 의 (나)와 같이 통상의 슬러리법에 의해 형광체층(R,G,B)을 형성한다. 이후 표시되어 있지 않지만 형광체층 위에 유기필름액을 도포하고 알루미늄막(105)을 증착에 의한 메탈백(Metal Back)층을 형성하여 (다)와 같은 형광면을 얻는다. 여기서 유기필름막은 400℃이상의 고온에서 열분해시켜 날려 보낸다.After the filter layer 103 is formed in this manner, the phosphor layers R, G, and B are formed by the usual slurry method as shown in FIG. Thereafter, although not shown, an organic film solution is coated on the phosphor layer, and a metal back layer is formed by depositing the aluminum film 105 to obtain a fluorescent surface as shown in (c). The organic film film is pyrolyzed and blown away at a high temperature of 400 ° C or higher.

이상 설명한 바와같이 본 발명의 형광막 제조방법은 필터층의 전면을 동시에 형성함으로서 특별한 장치가 필요없이 간단히 필터층을 형성할 수 있어서 비용이 적게들고, 필터층에 의해 외광이 흡수되어 높은 콘트라스트가 얻어짐은 물론 안료를 부착하지 않은 형광체를 사용함으로 음극선관의 휘도를 향상시키는 효과가 있다.As described above, the fluorescent film manufacturing method of the present invention can form the filter layer simply by forming the entire surface of the filter layer at the same time, so that the filter layer can be simply formed and the cost is low, and external light is absorbed by the filter layer, so that high contrast can be obtained. By using a phosphor which does not have a pigment, there is an effect of improving the brightness of the cathode ray tube.

Claims (3)

칼라 음극선관의 판넬 내면에 BM층이 형성되고, 상기 BM층이 형성된 판넬 내면과 형광체층 사이에 필터층을 형성하는 판넬의 형광막 제조방법에 있어서,In the method for producing a fluorescent film of a panel in which a BM layer is formed on an inner surface of a panel of a color cathode ray tube, and a filter layer is formed between an inner surface of the panel where the BM layer is formed and a phosphor layer. 상기 필터층은 3색의 녹,청,적의 안료를 동시에 혼합 분산시킨 슬러리를 판넬내면에 도포함을 특징으로 하는 음극선관용 형광막 제조방법.The filter layer is a fluorescent film manufacturing method for a cathode ray tube, characterized in that the coating on the inner surface of the panel with a slurry of mixing and dispersing three colors of green, blue, red pigments at the same time. 제 1 항에 있어서,The method of claim 1, 상기 슬러리의 조성은 녹색안료가 5∼10wt%, 청색안료가 10∼20wt%, 적색안료가 2∼8wt%인 것을 특징으로 하는 음극선관용 형광막 제조방법.The composition of the slurry is 5-10 wt% of green pigment, 10-20 wt% of blue pigment, and 2-8 wt% of red pigment. 제 1 항 또는 제 2 항에 있어서,The method according to claim 1 or 2, 상기 슬러리의 배합비율은 적색:녹색:청색이 1 : 0.5∼2 : 1.5∼3.5인 것을 특징으로 하는 음극선관용 형광막 제조방법.The mixing ratio of the slurry is red: green: blue 1: 1: 0.5 to 2: 1.5 to 3.5 characterized in that the fluorescent film manufacturing method for a cathode ray tube.
KR1019970018667A 1997-05-15 1997-05-15 Manufacturing method of fluorescent surface for crt KR100229708B1 (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100445026B1 (en) * 1997-12-10 2005-03-08 삼성에스디아이 주식회사 Cathode ray tube screen film using green filter film capable of improving luminance of screen film and preventing degradation of contrast even in case where glass panel with high transmissivity is employed
KR100487865B1 (en) * 1997-10-20 2005-07-28 엘지전자 주식회사 Fluorescent film production method of color cathode ray tube and composition of 3-color mixed filter suspension

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100487865B1 (en) * 1997-10-20 2005-07-28 엘지전자 주식회사 Fluorescent film production method of color cathode ray tube and composition of 3-color mixed filter suspension
KR100445026B1 (en) * 1997-12-10 2005-03-08 삼성에스디아이 주식회사 Cathode ray tube screen film using green filter film capable of improving luminance of screen film and preventing degradation of contrast even in case where glass panel with high transmissivity is employed

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