KR100298386B1 - Method for fabricating fluorescent layer of color cathode ray tube - Google Patents

Method for fabricating fluorescent layer of color cathode ray tube Download PDF

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Publication number
KR100298386B1
KR100298386B1 KR1019970039733A KR19970039733A KR100298386B1 KR 100298386 B1 KR100298386 B1 KR 100298386B1 KR 1019970039733 A KR1019970039733 A KR 1019970039733A KR 19970039733 A KR19970039733 A KR 19970039733A KR 100298386 B1 KR100298386 B1 KR 100298386B1
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South Korea
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green
blue
red
layer
fluorescent
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KR1019970039733A
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Korean (ko)
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KR19990016999A (en
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주재형
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구자홍
엘지전자 주식회사
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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
    • H01J9/227—Applying luminescent coatings with luminescent material discontinuously arranged, e.g. in dots or lines
    • 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
    • H01J29/22—Luminescent screens characterised by the binder or adhesive for securing the luminescent material to its support, e.g. vessel
    • H01J29/225—Luminescent screens characterised by the binder or adhesive for securing the luminescent material to its support, e.g. vessel photosensitive adhesive
    • 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

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  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Formation Of Various Coating Films On Cathode Ray Tubes And Lamps (AREA)

Abstract

PURPOSE: A method for fabricating fluorescent layer of a color cathode ray tube is provided to reduce a fabricating time by forming simultaneously a green, a blue, and a red filter layer and a green, a blue, and a red fluorescent layer. CONSTITUTION: A photoresist layer(41) is formed on a panel(40) by using a photosensitive resin solution. A green position of the photoresist layer(41) is exposed by using a shadow mask. A green filter layer(43G) and a green fluorescent layer(44G) are formed by applying a green pigment and a green fluorescent powder on a whole surface of the photoresist layer(41). A blue position of the photoresist layer(41) is exposed by using the shadow mask. A blue filter layer(43B) and a blue fluorescent layer(44B) are formed by applying a blue pigment and a blue fluorescent powder on the whole surface of the photoresist layer(41). A red position of the photoresist layer(41) is exposed by using the shadow mask. A red filter layer(43R) and a red fluorescent layer(44R) are formed by applying a red pigment and a red fluorescent powder on the whole surface of the photoresist layer(41).

Description

칼라 음극선관의 형광막 제조방법Manufacturing method of fluorescent film of color cathode ray tube

본 발명은 칼라 음극선관에 관한 것으로서, 특히 적, 녹, 청의 형광막 및 그 제조방법에 관한 것이다.The present invention relates to a color cathode ray tube, and more particularly, to a red, green, and blue fluorescent film and a method of manufacturing the same.

일반적으로 칼라 음극선관은 도 1에 도시된 바와 같이, 내측면에 형광막(1)이 형성된 패널(2) 및 내측면에 전도성을 갖는 흑연이 도포된 펀넬(3)은 융착 글라스로 서로 봉합되어지며 펀넬(3)의 네크부(4)에는 적, 녹, 청색의 3색 전자빔(5)을 방사시킬 수 있도록 전자총(6)이 내장되어 있다.In general, as shown in FIG. 1, the color cathode ray tube includes a panel 2 having a fluorescent film 1 formed on an inner surface thereof and a funnel 3 coated with conductive graphite on an inner surface thereof sealed with fusion glass. The neck portion 4 of the funnel 3 has an electron gun 6 embedded therein to emit red, green, and blue three-color electron beams 5.

그리고, 상기 펀넬(3)의 내측에는 색선별 전극인 섀도우 마스크(7)가 프레임(8)에 의하여 지지되어 있으며, 펀넬(3)의 외주면에는 전자빔(5)을 좌우로 편향시켜주는 편항요크(9)가 장착되어 있다.In addition, a shadow mask 7, which is a color-selective electrode, is supported by the frame 8 inside the funnel 3, and an unbiased yoke for deflecting the electron beam 5 from side to side on the outer circumferential surface of the funnel 3. 9) is mounted.

이와같이 구성된 칼라 음극선관은 전자총(6)에 영상신호를 입력하면 전자총(6)의 캐소드(cathode)로 부터 열전자가 방출되며, 방출된 열전자는 전자총(6)의 각 전극에서 인가된 전압에 의하여 패널(2) 쪽으로 가속 및 집속과정을 거치면서 진행된다.In the color cathode ray tube configured as described above, when an image signal is input to the electron gun 6, hot electrons are emitted from the cathode of the electron gun 6, and the emitted hot electrons are emitted by the voltage applied from each electrode of the electron gun 6. It proceeds by accelerating and focusing towards (2).

이때, 방출된 열전자는 패널(2)의 네크부(4)에 장착된 마그네트 자계에 의하여 전자빔(5)의 경로가 조정되며, 조정된 전자빔(5)은 편향요크(9)에 의하여 새도우 마스크(7)를 통과하면서 색선별이 이루어진다.At this time, the emitted hot electrons are adjusted to the path of the electron beam 5 by a magnet magnetic field mounted to the neck portion 4 of the panel 2, and the adjusted electron beam 5 is a shadow mask (by the deflection yoke 9). Color selection is performed while passing through 7).

섀도우 마스크(7)에서 색선별이 이루어진 전자빔(5)은 패널(2)의 내측면에 형성된 적, 녹, 청의 형광막(1)을 발광시키므로 화상을 얻게 된다.The electron beam 5 in which the color mask is selected in the shadow mask 7 emits red, green, and blue fluorescent films 1 formed on the inner surface of the panel 2, thereby obtaining an image.

여기서, 형광막(1)은 패널(2) 내측면에 사진 감광법에 의한 콘트라스 향상을 위하여 블랙 매트릭스를 형성하고, 그 위에 적, 녹, 청의 안료 필터층을 분말방식으로 설치한다.Here, the fluorescent film 1 forms a black matrix on the inner surface of the panel 2 in order to improve contrast by a photosensitive method, and a red, green, and blue pigment filter layer is provided thereon in a powder method.

그리고, 필터층 위에 적, 녹, 청의 형광체가 분말방식으로 스트라이프(Stripe) 또는 돗트(Dot)가 형성됨으로써 형광막이 형성된다.In addition, red, green, and blue phosphors are formed on the filter layer in a powder manner to form stripes or dots, thereby forming a fluorescent film.

이와같은 종래 기술에 칼라 음극선관의 형광막 제조방법을 첨부도면을 참조하여 설명하면 다음과 같다.Referring to the accompanying drawings, a conventional method for manufacturing a fluorescent film of a color cathode ray tube in the prior art is as follows.

도 2a 내지 도 2m은 종래 기술에 따른 칼라 음극선관의 형광막 제조 공정도이다.2a to 2m is a flow chart of the manufacturing process of the fluorescent film of the color cathode ray tube according to the prior art.

먼저, 도 2a에서와 같이, 패널(10) 전면에 감광성 수지 용액을 도포하여 제 1 감광막(11)을 형성하고, 섀도우 마스크(12)를 이용하여 제 1 감광막(11)을 녹색 위치를 노광하므로 녹색 필터층이 형성될 영역을 정의한다.First, as shown in FIG. 2A, the photosensitive resin solution is coated on the entire panel 10 to form the first photoresist film 11, and the first photoresist film 11 is exposed to the green position using the shadow mask 12. Define the area where the green filter layer is to be formed.

이때, 빛이 조사된 즉 녹색 필터층 형성영역의 제 1 감광막(11)은 점착성이 생긴다.At this time, the light is irradiated, that is, the first photosensitive film 11 of the green filter layer forming region is adhesive.

그리고, 도 2b에서와 같이 제 1 감광막(11) 전면에 분말의 녹색안료를 분사한후 공기 현상하므로 녹색 필터층 형성영역의 상부에만 녹색안료가 남아 녹색 필터층(13G)을 형성한다.As shown in FIG. 2B, the green pigment of the powder is sprayed on the entire surface of the first photoresist film 11 and then air is developed to form the green filter layer 13G only in the upper portion of the green filter layer forming region.

이어, 도 2c에서와 같이 섀도우 마스크(12)를 이용하여 녹색 필터층(13G)을 포함한 제 1 감광막(11)의 청색 위치를 노광하므로 청색 필터층이 형성될 영역을 정의한다.Next, as shown in FIG. 2C, the blue position of the first photosensitive layer 11 including the green filter layer 13G is exposed using the shadow mask 12 to define a region in which the blue filter layer is to be formed.

여기서, 빛이 조사된 청색 필터층이 형성될 영역의 제 1 감광막(11)은 점착성이 생긴다Here, the first photosensitive film 11 of the region where the blue filter layer irradiated with light is to be formed is adhesive.

그리고, 도 2d에서와 같이 녹색 필터층(13G)을 포함한 패널(10) 전면에 청색안료를 분사한후 공기 현상하여 점착성이 있는 제 1 감광막(11) 상부에만 청색안료를 남겨 청색 필터층(13B)을 형성한다.As shown in FIG. 2D, the blue pigment is sprayed on the entire surface of the panel 10 including the green filter layer 13G, and air is developed to leave the blue pigment only on the sticky first photoresist layer 11, thereby providing the blue filter layer 13B. Form.

이어, 도 2e에서와 같이 섀도우 마스크(12)를 이용하여 청색 필터층(13B)을 포함한 제 1 감광막(11)의 적색 위치를 노광하므로 적색 필터층이 형성될 영역을 정의한다.Subsequently, as shown in FIG. 2E, the red position of the first photosensitive layer 11 including the blue filter layer 13B is exposed using the shadow mask 12 to define a region in which the red filter layer is to be formed.

즉, 적색 필터층이 형성될 영역의 제 1 감광막(11)은 조사된 빛에 의해 점착성이 생긴다.That is, the first photosensitive film 11 in the region where the red filter layer is to be formed has adhesiveness due to irradiated light.

그리고, 도 2f에서와 같이 청색 필터층(13B)을 포함한 패널(10) 전면에 적색안료를 분사한후 공기 현상하여 점착성이 있는 적색 형광막 형성 영역에만 적색안료가 남아 적색 필터층(13R)을 형성한다.As shown in FIG. 2F, a red pigment is sprayed onto the entire surface of the panel 10 including the blue filter layer 13B and then air-developed to form a red filter layer 13R remaining only in a red fluorescent film forming region having a stickiness. .

이어, 도 2g에서와 같이 녹, 청, 적색 필터층(13R)을 포함한 패널(10) 전면에 감광성 수지용액을 도포하여 제 2 감광막(14)을 형성한다.Subsequently, as illustrated in FIG. 2G, the photosensitive resin solution is coated on the entire surface of the panel 10 including the green, blue, and red filter layers 13R to form the second photosensitive film 14.

그리고, 도 2h에서와 같이 섀도우 마스크(12)를 이용하여 제 2 감광막(14)의 녹색 위치를 노광하므로 녹색 형광막 형성영역을 정의한다.As shown in FIG. 2H, the green position of the second photosensitive layer 14 is exposed by using the shadow mask 12 to define the green fluorescent film formation region.

여기서, 녹색 형광막 형성영역은 녹색 필터층(13G)의 상부영역이다.Here, the green fluorescent film forming region is an upper region of the green filter layer 13G.

이어, 제 2 감광막(14) 전면에 녹색 형광물질을 분사하고 공기 현상하여 녹색 형광막 형성영역의 제 2 감광막(14)의 점착성에 의해 녹색 형광막(15G)을 형성한다.Subsequently, a green fluorescent material is sprayed on the entire surface of the second photosensitive film 14 and air-developed to form the green fluorescent film 15G by the adhesion of the second photosensitive film 14 in the green fluorescent film forming region.

그리고, 도 2j에서와 같이 섀도우 마스크(12)를 이용하여 녹색 형광막(15G)을 포함한 제 2 감광막(14)의 청색위치를 노광하므로 청색 형광막이 형성될 영역을 정의한다.As shown in FIG. 2J, the blue position of the second photosensitive film 14 including the green fluorescent film 15G is exposed using the shadow mask 12 to define a region in which the blue fluorescent film is to be formed.

이어, 도 2k에서와 같이 녹색 형광막(15G)을 포함한 패널(10) 전면에 청색 형광물질을 분사하고 공기현상하여 청색 형광막 형성영역의 제 2 감광막(14)의 점착성에 의해 청색 형광막(15B)을 형성한다.Subsequently, as shown in FIG. 2K, a blue fluorescent material is sprayed on the entire surface of the panel 10 including the green fluorescent film 15G, and air is developed to form a blue fluorescent film (by the adhesion of the second photosensitive film 14 in the blue fluorescent film forming region). 15B).

그리고, 도 2l에서와 같이 섀도우 마스크(12)를 이용하여 청색 형광막(15B)을 포함한 제 2 감광막(14)의 적색위치를 노광하므로 적색 형광막이 형성될 영역을 정의한다.As shown in FIG. 2L, since the red position of the second photosensitive film 14 including the blue fluorescent film 15B is exposed using the shadow mask 12, a region in which the red fluorescent film is to be formed is defined.

이어, 도 2m에서와 같이 청색 형광막(15B)을 포함한 패널(10) 전면에 적색 형광물질을 분사하고 공기현상하여 적색 형광막(15R)을 형성하므로써, 칼라 음극선관 패널의 형광막 제작을 완료한다.Subsequently, as shown in FIG. 2M, a red fluorescent film 15R is formed by spraying a red fluorescent material over the entire surface of the panel 10 including the blue fluorescent film 15B and developing air, thereby completing the fabrication of the fluorescent film of the color cathode ray tube panel. do.

종래 기술에 따른 칼라 음극선관의 형광막 제조방법은 녹, 청, 적 필터층 형성과 형광막 형성시 감광막 도포와 노광 및 현상 공정을 반복해야 하므로 공정이 너무 복잡해지고 공정 시간이 너무 많이 소요되는 문제점이 있다.The fluorescent film manufacturing method of the color cathode ray tube according to the prior art has a problem that the process becomes too complicated and the process takes too much because the photoresist coating, exposure and development processes must be repeated when forming the green, blue, and red filter layers and forming the fluorescent film. have.

따라서, 본 발명은 종래 기술의 제반 문제을 해결하기 위하여 안출한 것으로써, 녹, 청, 적색의 필터층을 각각의 형광막과 동시에 형성하기 위한 칼라 음극선관의 형광막 제조방법을 제공함에 그 목적이 있다.Accordingly, an object of the present invention is to provide a method for producing a fluorescent film of a color cathode ray tube for forming a green, blue, and red filter layer simultaneously with the respective fluorescent films, in order to solve various problems of the prior art. .

도 1은 칼라 음극선관의 개략적 구성도,1 is a schematic configuration diagram of a color cathode ray tube;

도 2a 내지 도 2m은 종래 기술에 따른 칼라 음극선관의 형광막 제조 공정도,Figure 2a to 2m is a fluorescent film manufacturing process of the color cathode ray tube according to the prior art,

도 3a 내지 도 3g는 본 발명에 따른 칼라 음극선관의 형광막 제조 공정도,3a to 3g is a manufacturing process diagram of the fluorescent film of the color cathode ray tube according to the present invention,

도 4는 본 발명에 따른 칼라 음극선관에서 형광막의 발광 및 흡수 스펙트럼도이다.4 is a light emission and absorption spectrum diagram of a fluorescent film in a color cathode ray tube according to the present invention.

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

40 : 패널 41 : 감광막40 panel 41 photosensitive film

42 : 섀도우 마스크 43G,43B,43R : 녹,청,적색 필터층42: shadow mask 43G, 43B, 43R: green, blue, red filter layer

44G,44B,44R : 녹,청,적색 형광막44G, 44B, 44R: Green, blue, red fluorescent film

본 발명에 따른 칼라 음극선관의 형광막 제조방법은 음극선관의 패널내면에 감광막을 형성한후 선택적으로 노광하는 단계와, 감광막 상부에 칼라 안료분말 및 형광체 분말을 차례로 증착하는 단계와, 증착된 안료분말 및 형광체 분말을 현상하여 칼라 필터층 및 형광막을 형성하는 단계를 포함하여 이루어짐에 있다.According to the present invention, there is provided a method of manufacturing a fluorescent film of a color cathode ray tube, the method comprising: selectively forming a photoresist film on an inner surface of a panel of a cathode ray tube, depositing a color pigment powder and a phosphor powder on the photoresist film, and then depositing a pigment. And developing the powder and the phosphor powder to form a color filter layer and a fluorescent film.

이하, 본 발명에 따른 칼라 음극선관의 형광막 제조방법의 바람직한 일실시예를 첨부도면을 참조하여 상세히 설명한다.Hereinafter, with reference to the accompanying drawings a preferred embodiment of the fluorescent film manufacturing method of the color cathode ray tube according to the present invention will be described in detail.

도 3a 내지 도 3g는 본 발명에 따른 칼라 음극선관의 형광막 제조 방법을 나타낸 공정도이고, 도 4(a)내지 도 4(c)는 녹, 청, 적색의 형광막에 의한 외부광의 반사 및 흡수상태를 나타낸 파형도이다.3A to 3G are process charts illustrating a method for manufacturing a fluorescent film of a color cathode ray tube according to the present invention, and FIGS. 4 (a) to 4 (c) show reflection and absorption of external light by green, blue and red fluorescent films. This is a waveform diagram showing the state.

먼저, 도 3a에서와 같이 패널(40) 전면에 빛에 의해 점착성을 갖는 감광성 수지 용액을 스핀법으로 도포한후 건조하여 감광막(41)을 형성한다.First, as shown in FIG. 3A, a photosensitive resin solution having adhesiveness by light is applied to the entire surface of the panel 40 by a spin method, followed by drying to form a photosensitive film 41.

여기서, 감광막(41)은 증류수, 폴리비닐알콜(PVA), 디아조늄염, 프로필렌그릴콜 에스테르, 아크릴 에멀젼 및 계면활성제 등의 혼합물질로 구성된다.Here, the photosensitive film 41 is composed of a mixture of distilled water, polyvinyl alcohol (PVA), diazonium salt, propyleneglycol ester, acrylic emulsion and surfactant.

그리고, 도 3b에서와 같이 섀도우 마스크(42)를 이용하여 감광막(41)의 녹색 위치를 노광하여 녹색 형광막이 형성될 영역을 정의한다.3B, the green position of the photoresist layer 41 is exposed by using the shadow mask 42 to define a region in which the green fluorescent layer is to be formed.

이때, 감광막(41)은 빛이 조사된 영역 즉, 녹색 형광막이 형성될 영역이 점착성을 가지게 된다.In this case, the photoresist layer 41 may have adhesiveness in a region to which light is irradiated, that is, a region in which a green fluorescent layer is to be formed.

이어, 도 3c에서와 같이 감광막(41) 전면에 녹색안료(C0O-Cr2O3-TiO2-Al2O3) 분말을 균일하게 산포하고, 그 상부에 녹색 형광분말을 분사 도포한후 공기현상하여 점착성을 가지는 감광막(41)의 일정영역 상부에 녹색 필터층(43G)과 녹색 형광막(44G)을 동시에 형성한다.Next, as shown in FIG. 3c, the green pigment (C 0 O—Cr 2 O 3 —TiO 2 —Al 2 O 3 ) powder is uniformly dispersed on the entire photoresist layer 41 and sprayed and coated with a green fluorescent powder thereon. After the development of air, the green filter layer 43G and the green fluorescent film 44G are simultaneously formed on an upper portion of the adhesive photosensitive film 41.

이때, 녹색 필터층(43G)은 2∼10μm의 두께로 형성되어야 하는데, 그 이유는 필터층의 두께가 2μm 이하이면 필터층의 특성인 외부광을 선택적으로 반사시키고 형광막에서 발광된 광을 선택적으로 흡수하는 효과가 미약하고, 필터층의 두께가 10μm 이상이면 너무 두꺼워 필터층 상부의 형성되는 형광막이 감광막에 부착되는데 어렵기 때문이다.At this time, the green filter layer 43G should be formed to have a thickness of 2 to 10 μm. When the thickness of the filter layer is 2 μm or less, the green filter layer 43G selectively reflects external light, which is a characteristic of the filter layer, and selectively absorbs light emitted from the fluorescent film. This is because the effect is insignificant, and if the thickness of the filter layer is 10 μm or more, the thickness is so thick that it is difficult for the fluorescent film formed on the filter layer to adhere to the photosensitive film.

그리고, 도 3d에서와 같이 섀도우 마스크(42)를 이용하여 녹색 필터층(43G) 및 녹색 형광막(44G)을 포함한 감광막(41)의 청색 위치를 노광하므로 청색 형광막이 형성될 영역을 정의한다.As shown in FIG. 3D, the blue position of the photosensitive film 41 including the green filter layer 43G and the green fluorescent film 44G is exposed using the shadow mask 42 to define a region where the blue fluorescent film is to be formed.

여기서, 청색 형광막이 형성될 영역의 감광막(41)은 조사된 빛에 의해 점착성을 가지게 된다.Here, the photosensitive film 41 in the region where the blue fluorescent film is to be formed has adhesiveness by irradiated light.

이어, 도 3e에서와 같이 녹색 형광막(44G)을 포함한 감광막(41) 전면에 청색안료(C0O-Al2O3) 분말 및 청색 형광분말을 차례로 분사하여 도포한후 공기 현상하여 점착성을 갖는 감광막(41)의 영역상부에 청색 필터층(43B) 및 청색 형광막(44B)을 형성한다.Subsequently, as shown in FIG. 3E, the blue pigment (C 0 O-Al 2 O 3 ) powder and the blue fluorescent powder are sprayed on the entire surface of the photosensitive film 41 including the green fluorescent film 44G, and then air-developed to improve adhesion. The blue filter layer 43B and the blue fluorescent film 44B are formed on the area | region of the photosensitive film 41 which has.

그리고, 도 3f 에서와 같이 섀도우 마스크(42)를 이용하여 청색 필터층(43B) 및 청색 형광막(44B)을 포함한 감광막(41)의 적색 위치를 노광하여 적색 형광막이 형성될 영역을 정의한다.As illustrated in FIG. 3F, the red position of the photosensitive layer 41 including the blue filter layer 43B and the blue fluorescent layer 44B is exposed using the shadow mask 42 to define a region in which the red fluorescent layer is to be formed.

이때, 적색 형광막이 형성될 영역의 감광막(41)은 빛이 조사되어 점착성을 가지게 된다.At this time, the photosensitive film 41 of the region where the red fluorescent film is to be formed is irradiated with light to have adhesiveness.

이어, 도 3e에서와 같이 청색 형광막(44B)을 포함한 감광막(41) 전면에 적색안료(Fe2O3) 분말 및 적색 형광분말을 차례로 분사하여 도포한후 공기 현상하여 점착성을 갖는 감광막(41)의 영역상부에 적색 필터층(43R) 및 적색 형광막(44R)을 형성함으로써 패널의 형광막 제조공정을 완료한다.Subsequently, as shown in FIG. 3E, a red pigment (Fe 2 O 3 ) powder and a red fluorescent powder are sprayed on the entire surface of the photosensitive film 41 including the blue fluorescent film 44B in order, and then air-developed to have a tacky photosensitive film 41. The fluorescent film manufacturing process of the panel is completed by forming the red filter layer 43R and the red fluorescent film 44R on the region of the ().

이와같은 공정에 의해 형성된 칼라 음극선관의 형광막은 광의 선택적 흡수기능이 향상되는데 이를 도 4를 참조하여 설명한다.The fluorescent film of the color cathode ray tube formed by such a process improves the selective absorption of light, which will be described with reference to FIG. 4.

도 4a는 녹색 필터층 및 녹색 형광막의 투과 및 발광 스펙트럼도이고, 도 4b는 청색 필터층 및 청색 형광막의 투과 및 발광 스펙트럼도이며, 도 4c는 적색 필터층 및 적색 형광막의 투과 및 발광 스펙트럼도이다.4A is a transmission and emission spectrum diagram of the green filter layer and the green fluorescent film, FIG. 4B is a transmission and emission spectrum diagram of the blue filter layer and the blue fluorescent film, and FIG. 4C is a transmission and emission spectrum diagram of the red filter layer and the red fluorescent film.

도 4에서와 같이, 일정 파장을 갖는 녹, 청, 적색의 발광색에서의 발광 스펙트럼이 투과율이 높고 그 외의 다른 광은 투과 스펙트럼의 투과율이 낮다.As shown in Fig. 4, the emission spectrum of the emission color of green, blue, and red having a predetermined wavelength has a high transmittance and the other light has a low transmission spectrum.

그러므로, 발광색 외의 다른 광은 흡수하여 발광손실이 적으면서 외부광을 선택적으로 반사시키는 능력이 향상된다.Therefore, the ability to selectively absorb external light while absorbing light other than the light emission color is low, thereby improving the light emission loss.

본 발명에 따른 칼라 음극선관의 형광막 제조방법은 녹,청,적색의 필터층 및 형광막을 동시에 형성하므로 공정이 단순화되어 생산성이 크게 향상된다.The fluorescent film manufacturing method of the color cathode ray tube according to the present invention simultaneously forms a green, blue and red filter layer and a fluorescent film, thereby simplifying the process and greatly improving productivity.

또한, 필터층의 두께를 일정범위로 형성하므로 외부광을 선택적으로 반사시키고, 형광막에서 발광된 광을 선택적으로 투과시킬 수 있는 능력이 향상되어 색순도, 휘도 및 콘트라스트를 향상시킨 칼라 음극선관을 제작할 수 있다.In addition, since the thickness of the filter layer is formed within a certain range, the ability to selectively reflect external light and selectively transmit the light emitted from the fluorescent film is improved, thereby manufacturing a color cathode ray tube with improved color purity, brightness, and contrast. have.

Claims (2)

칼라 음극선관의 형광막 제조방법에 있어서,In the fluorescent film manufacturing method of a color cathode ray tube, 상기 음극선관의 패널내면에 감광막을 형성한후 선택적으로 노광하는 단계;Selectively forming a photoresist film on an inner surface of the panel of the cathode ray tube; 상기 감광막 상부에 칼라 안료 분말 및 형광체 분말을 차례로 증착하는 단계;Sequentially depositing color pigment powder and phosphor powder on the photosensitive film; 상기 증착된 안료분말 및 형광체 분말을 현상하여 칼라 필터층 및 형광막을 형성하는 단계를 포함하여 이루어짐을 특징으로 하는 칼라 음극선관의 형광막 제조방법.And developing the deposited pigment powder and the phosphor powder to form a color filter layer and a fluorescent film. 제 1 항에 있어서,The method of claim 1, 상기 칼라 필터층은 2∼10μm 두께로 형성함을 특징으로 하는 칼라 음극선관의 형광막 제조방법.The color filter layer is a fluorescent film manufacturing method of a color cathode ray tube, characterized in that formed in 2 to 10μm thickness.
KR1019970039733A 1997-08-20 1997-08-20 Method for fabricating fluorescent layer of color cathode ray tube KR100298386B1 (en)

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Citations (1)

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Publication number Priority date Publication date Assignee Title
JPH05275007A (en) * 1992-03-25 1993-10-22 Sony Corp Formation of phosphor screen of cathode-ray tube

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH05275007A (en) * 1992-03-25 1993-10-22 Sony Corp Formation of phosphor screen of cathode-ray tube

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