KR100228786B1 - Fluorescent surface of color cathode ray tube - Google Patents

Fluorescent surface of color cathode ray tube Download PDF

Info

Publication number
KR100228786B1
KR100228786B1 KR1019960008979A KR19960008979A KR100228786B1 KR 100228786 B1 KR100228786 B1 KR 100228786B1 KR 1019960008979 A KR1019960008979 A KR 1019960008979A KR 19960008979 A KR19960008979 A KR 19960008979A KR 100228786 B1 KR100228786 B1 KR 100228786B1
Authority
KR
South Korea
Prior art keywords
film
fluorescent surface
phosphor
phosphors
color
Prior art date
Application number
KR1019960008979A
Other languages
Korean (ko)
Other versions
KR970067455A (en
Inventor
박무용
천병욱
Original Assignee
김영남
오리온전기주식회사
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 김영남, 오리온전기주식회사 filed Critical 김영남
Priority to KR1019960008979A priority Critical patent/KR100228786B1/en
Publication of KR970067455A publication Critical patent/KR970067455A/en
Application granted granted Critical
Publication of KR100228786B1 publication Critical patent/KR100228786B1/en

Links

Classifications

    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01JELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J29/00Details of cathode-ray tubes or of electron-beam tubes of the types covered by group H01J31/00
    • H01J29/02Electrodes; Screens; Mounting, supporting, spacing or insulating thereof
    • H01J29/10Screens on or from which an image or pattern is formed, picked up, converted or stored
    • H01J29/18Luminescent screens
    • H01J29/28Luminescent screens with protective, conductive or reflective layers
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01JELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J29/00Details of cathode-ray tubes or of electron-beam tubes of the types covered by group H01J31/00
    • H01J29/02Electrodes; Screens; Mounting, supporting, spacing or insulating thereof
    • H01J29/10Screens on or from which an image or pattern is formed, picked up, converted or stored
    • H01J29/18Luminescent screens
    • H01J29/30Luminescent screens with luminescent material discontinuously arranged, e.g. in dots, in lines
    • H01J29/32Luminescent 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 칼라브라운관에서 신규한 구조의 형광면을 개시한다.The present invention discloses a fluorescent surface of a novel structure in a color brown tube.

종래에는 Al막을 균일한 경면으로 형성하기 위해 중간막을 형성하고 이를 연소제거하는 번거로움이 있었으며, 특히 중간막의 제거과정에서 Al막이 박리되고, 전자빔이 Al막에 의해 분산되어 효율이 저하되는 문제가 있었다.Conventionally, in order to form an Al film with a uniform mirror surface, there is a problem of forming an intermediate film and burning and removing it. Particularly, in the process of removing the intermediate film, the Al film is peeled off, and the electron beam is dispersed by the Al film, thereby degrading efficiency. .

본 발명에서는 각 형광체에 대해 분리된 상태로 Al막을 직접 각 형광체의 배면에 형성하여 종래의 문제점을 해결하였다.In the present invention, an Al film is formed directly on the back surface of each phosphor in a state separated from each phosphor to solve the conventional problem.

Description

칼라브라운관의 형광면Fluorescent surface of color CRT

제1도는 일반적인 칼라브라운관의 형광면 구성을 보이는 일부 확대단면도.Figure 1 is an enlarged cross-sectional view showing the configuration of the fluorescent surface of a typical color brown tube.

제2도는 본 발명에 의한 형광면의 구성을 보이는 확대 단면도이다.2 is an enlarged cross-sectional view showing the configuration of a fluorescent screen according to the present invention.

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

P : 패널(panel) F : (패널의) 페이스(face)P: panel F: face

R,G,B : 형광체(phosphor) Al : Al막R, G, B: Phosphor Al: Al film

BM : 블랙매트릭스(black matrix)BM: black matrix

본 발명은 칼라브라운관에 관한 것으로, 특히 그 형광면에 관한 것이다.The present invention relates to a color brown tube, and more particularly to a fluorescent surface thereof.

칼라브라운관은 R,G,B 각 형광체를 도트(dot)나 스트라이프(stripe) 등의 소정패턴으로 배열하고, 섀도우마스크(shadow mask)등의 색선별 수단을 통해 각 형광체를 선택적으로 발광시킴으로써 구현하는 화상표시장치이다.The color CRT is arranged by arranging the R, G, and B phosphors in a predetermined pattern such as a dot or a stripe, and selectively emitting each phosphor through color screening means such as a shadow mask. It is an image display device.

칼라브라운관의 형광면의 구성은 대략 제1도에 도시된 바와 같은 바, 패널(panel; P)은 페이스(face;F)와 이를 둘러싸는 스커어트(skirt;S)로 구성되고, 페이스(F)의 내면에 형광면이 형성된다.The configuration of the fluorescent surface of the color-brown tube is roughly as shown in FIG. 1. The panel (P) is composed of a face (F) and a skirt (S) surrounding it, and the face (F). A fluorescent surface is formed on the inner surface of the.

형광면은 흑연등의 도전성 흑색막으로 된 블랙매트릭스(black matrix;BM)를 패터닝(patterning)하여 형성된 창(window)에 R,G,B 각 형광체를 순차적으로 도포 및 패터닝하여 블랙매트릭스(BM)의 각 창에 교호적으로 노출시키게 된다. 블랙매트릭스(BM)의 외측은 스커어트(S)를 따라 연장되어 도시되지 않은 새도우마스크의 프레임이 결합 및 전기적 접속될 스터드핀(stud pin;T)에 핀다그(pin dag;G)에 전기적 접속된다.The fluorescent surface is formed by patterning a black matrix (BM) made of a conductive black film such as graphite, and sequentially applying and patterning phosphors of R, G, and B to form a black matrix (BM). Each window is exposed alternately. The outside of the black matrix (BM) extends along the skirt (S) so that the frame of the shadow mask (not shown) is electrically connected to a pin dag (G) to the stud pin (T) to be coupled and electrically connected. do.

한편 형광면의 배면에는 메탈백(metal bakc)을 구성하기 위한 Al막(Al)이 형성되는데, 불균일한 형광체(R,G,B)상에 Al막(Al)을 그대로 형성하여서는 균일한 경면(鏡面)을 얻을 수 없으므로 열분해성 유기수지로 된 필르밍(filming)막 또는 중간막(I)을 형성하여 중간막(I)상에 Al막(Al)을 형성한 뒤, 소성(燒成)에 의해 중간막(I)을 제거하게 된다.On the other hand, the Al film Al for forming a metal bakc is formed on the rear surface of the fluorescent surface. The Al film Al is formed on the non-uniform phosphors R, G, and B as it is, and the mirror surface is uniform. ), A filming film or an interlayer (I) made of pyrolytic organic resin is formed to form an Al film (Al) on the interlayer (I), and then the interlayer ( I) will be removed.

이러한 형광면에 있어서, 각 형광체(R,G,B)는 전자총에서 발사된 전자빔에 의해 선택적으로 발광하여 가시광선을 발생시키고, Al막(Al)은 이 가시광선을 페이스(F) 전면으로 반사하여 휘도를 높이는 동시에 형광면의 부분적 소손(燒損)을 방지하고 유리전자를 배출시키는 역할을 한다. 한편 블랙매트릭스(BM)는 각 형광체(R,G,B)를 검은 배경색으로 분리하여 화상의 컨트라스트(contrast)를 증가시키는 역할을 한다.In such a fluorescent surface, each of the phosphors R, G, and B selectively emits light by an electron beam emitted from an electron gun to generate visible light, and the Al film Al reflects this visible light to the front face F. At the same time, it increases luminance and prevents partial burnout of the fluorescent surface and emits free electrons. Meanwhile, the black matrix BM separates each phosphor R, G, and B into a black background color to increase contrast of an image.

그런데 이와 같은 종래의 구성에 있어서는 Al막(Al)의 균일한 경면 형성을 위해 별도의 중간막(I)을 형성하였다가 제거해야 하는 번거로운 공정들이 추가될 뿐아니라, 소성시 연소가스로 배출되는 중간막(I)에 의해 Al막(Al)이 들뜨게 되어 형광면으로부터 박리되기 쉽다. 뿐만 아니라 Al막(Al)은 일종의 가속전극의 역할을 하는바, 대면적의 공통전극이므로 입사된 전자빔이 분사되어 형광체(R,G,B)의 발광휘도를 저하시키는 문제도 있었다.However, in such a conventional configuration, in addition to the cumbersome processes of forming and removing a separate intermediate film I for uniform mirror surface formation of the Al film Al, the intermediate film discharged to the combustion gas during firing ( The Al film Al is lifted by I) and easily peels off from the fluorescent surface. In addition, since the Al film Al serves as a kind of acceleration electrode, the common electrode having a large area has a problem in that the incident electron beam is sprayed to lower the luminance of light emitted from the phosphors R, G, and B.

이와 같은 종래의 여러 가지 문제점을 감안하여 본 발명의 목적은 번거로운 중간막 형성 및 제거공정을 생략할 수 있으며 Al막의 박리가 없고 전자빔의 효율도 향상시킬 수 있는 형광면을 제공하는 것이다.In view of the various problems of the related art, an object of the present invention is to provide a fluorescent surface capable of eliminating cumbersome interlayer formation and removal processes and improving the efficiency of the electron beam without exfoliation of the Al film.

이와 같은 목적의 달성을 위해 본 발명에 의한 형광면은 Al막이 각 형광체에 대해 분리된 상태로 그 배면에 직접 형성되는 것을 특징으로 한다.In order to achieve the above object, the fluorescent surface according to the present invention is characterized in that the Al film is directly formed on the rear surface of the phosphor in a separated state.

이러한 본 발명 구성에 의하면 중간층의 형성이 필요없고 중간층의 제거시 Al막이 박리되지 않을뿐 아니라 전자빔의 분산이 없어 발광휘도가 높아지는 여러 가지 장점이 있다.According to the configuration of the present invention, there is no need to form the intermediate layer, and the Al film is not peeled off when the intermediate layer is removed, and there is a variety of advantages in that the emission luminance is increased due to the dispersion of the electron beam.

본 발명의 다른 특징과 이점들은 첨부된 도면을 참조한 이하의 바람직한 실시예의 설명으로 더욱 명확해질 것이다.Other features and advantages of the present invention will become more apparent from the following description of the preferred embodiments with reference to the attached drawings.

제2도에서, 각 형광체(R,G,B)의 배면에는 Al막(Al)이 각 형광체(R,G,B)에 대해 분리된 상태로 직접 형성된다. 이러한 Al막(Al)은 일반적으로 Al타겟(target)의 증착에 의해 형성되는 바, 형광체(R,G,B) 상에 직접 증착하면 Al막(Al)은 연속된 상태로 형성된다.In FIG. 2, Al film Al is directly formed on the back surface of each phosphor R, G, and B in a state separated from each phosphor R, G, and B. In FIG. The Al film Al is generally formed by deposition of an Al target. If the Al film is directly deposited on the phosphors R, G, and B, the Al film Al is formed in a continuous state.

이러한 Al막(Al)을 분리하는 방법으로는 바람직하기로 다음 두가지 방법의 적용이 가능하다. 한 방법은 Al막(Al)이 산등에 부식되는 특성을 이용하여 사진식각법(photo lighography)에 의해 블랙매트릭스(BM)상의 연속부분을 식각해내는 방법이다. 그러나 이 방법은 산을 사용하므로 형광면에 악영향을 미칠 우려가 있다.As a method of separating the Al film Al, the following two methods can be applied. One method is to etch the continuous portion on the black matrix (BM) by photo lighography using the characteristic that the Al film Al is corroded to acid. However, this method uses acid, which may adversely affect the fluorescent surface.

이에 따라 더욱 바람직하기로는 형광체(R,G,B)사이의 블랙매트릭스(BM) 상면에 PVA등 수용성수지의 도막(塗膜)을 형성한 뒤 그 상부에 Al막(Al)을 증착한다. 그리고 세척수를 소정압력으로 분사하면 수용성도막이 씻겨 나가게 되므로 Al막(Al)은 도시된 바와 같이 분리된 상태로 형성된다.Accordingly, more preferably, a film of water-soluble resin such as PVA is formed on the upper surface of the black matrix BM between the phosphors R, G, and B, and then Al film Al is deposited thereon. In addition, since the water-soluble coating film is washed away by spraying the washing water at a predetermined pressure, the Al film (Al) is formed in a separated state as shown.

이와 같은 본 발명에 의하면 Al막(Al)이 전체적인 경면을 이룰 필요가 없으므로 종래와 같은 중간막(제1도의 I)의 형성이나 제거공정이 불필요하게 되고, 중간막(I)의 제거과정에서 Al막(Al)이 박리되는 문제도 방지된다. 또한 Al막(Al)상으로 입사된 전자빔은 분산없이 해당 형광체(R,G,B)에만 집중되므로 전자빔의 효율이 증대되어 높은 발광휘도가 발휘될 수 있게 된다.According to the present invention, since the Al film (Al) does not need to form an entire mirror surface, the formation or removal process of the intermediate film (I in FIG. 1) as in the prior art is unnecessary, and the Al film ( The problem that Al) is peeled off is also prevented. In addition, since the electron beam incident on the Al film Al is concentrated only on the corresponding phosphors R, G, and B without dispersion, the efficiency of the electron beam is increased, thereby enabling high emission luminance.

이에 따라 본 발명은 고휘도의 형광면을 낮은 제조원가와 공수로 제공하는 효과가 있다.Accordingly, the present invention has the effect of providing a high luminance fluorescent surface at a low manufacturing cost and airborne.

Claims (3)

R,G,B 각 형광체와, 이들을 분리하는 블랙매트릭스, 그리고 상기 형광체의 배면에 경면을 형성하는 Al막을 구비하는 칼라브라운관의 형광면에 있어서, 상기 Al막이 상기 각 형광체에 대해 분리된 상태로 상기 각 형광체의 배면에 직접 형성되는 것을 특징으로 하는 칼라브라운관의 형광면.In a fluorescent tube of a color-brown tube having R, G, and B phosphors, a black matrix separating them, and an Al film forming a mirror surface on the back surface of the phosphor, the Al film is separated from each of the phosphors. A fluorescent surface of a color brown tube, characterized in that formed directly on the back of the phosphor. 제1항에 있어서, 상기 Al막의 분리형성이, 상기 형광체상에 상기 Al막을 증착형성한 뒤, 상기 형광체 사이의 부분을 사진식각법에 의해 식각하여 이루어지는 것을 특징으로 하는 칼라브라운관의 형광면.The fluorescent surface of a color brown tube according to claim 1, wherein the separation of the Al film is performed by depositing the Al film on the phosphor and then etching portions between the phosphors by photolithography. 제1항에 있어서, 상기 Al막의 분리형성이, 상기 형광체 사이에 수용성 도막을 형성한 뒤, 그 상부에 상기 Al막을 증착형성하고, 상기 수용성 도막을 세척시켜 이루어지는 것을 특징으로 하는 칼라브라운관의 형광면.The fluorescent surface of a color-brown tube according to claim 1, wherein the separation of the Al film is performed by forming a water-soluble coating film between the phosphors, depositing the Al film on the upper portion thereof, and washing the water-soluble coating film.
KR1019960008979A 1996-03-29 1996-03-29 Fluorescent surface of color cathode ray tube KR100228786B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1019960008979A KR100228786B1 (en) 1996-03-29 1996-03-29 Fluorescent surface of color cathode ray tube

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1019960008979A KR100228786B1 (en) 1996-03-29 1996-03-29 Fluorescent surface of color cathode ray tube

Publications (2)

Publication Number Publication Date
KR970067455A KR970067455A (en) 1997-10-13
KR100228786B1 true KR100228786B1 (en) 1999-11-01

Family

ID=19454351

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1019960008979A KR100228786B1 (en) 1996-03-29 1996-03-29 Fluorescent surface of color cathode ray tube

Country Status (1)

Country Link
KR (1) KR100228786B1 (en)

Also Published As

Publication number Publication date
KR970067455A (en) 1997-10-13

Similar Documents

Publication Publication Date Title
US5693438A (en) Method of manufacturing a flat panel field emission display having auto gettering
US5717288A (en) Perforated screen for brightness enhancement
EP0187860A1 (en) Cathode ray tube
US5547411A (en) Method of manufacturing color cathode ray tube screen
JPS58106742A (en) Fluorescent indicating lamp
KR100228786B1 (en) Fluorescent surface of color cathode ray tube
KR910005810B1 (en) Pannel of a color picture tube and manufacturing method of the same
EP0750331B1 (en) Method of forming fluorescent screen of cathode ray tube
JP2007317522A (en) Image display device
KR100334021B1 (en) Fluorescent screen for beam index CRT and manufacturing method of the same
KR100252408B1 (en) A fluorescent layer and a method for manufacturing the same
KR0157394B1 (en) Cathode ray tube
KR100319094B1 (en) Structure of black matrix on face panel of CRT and Method for manufacturing the same
KR100228785B1 (en) Fluorescent surface of color braun tube
KR100258916B1 (en) Method for making phosphor layer on panel of crt
JP2536409B2 (en) Method for forming fluorescent screen of cathode ray tube
KR100240493B1 (en) Color cathode ray tube
KR100189418B1 (en) A vapor deposition method of aluminium layer in the panel
KR0179122B1 (en) Method for forming screen of color crt
JP2000076994A (en) Manufacture of cathode-ray tube
EP1098348A2 (en) Color cathode ray tube and manufacture for contrast improvement
KR20030030722A (en) Flat panel display device having reflective layer and manufacturing method of the reflective layer
KR19980073024A (en) Fluorescent Film Black Matrix Composition and Formation Method of Cathode Ray Tube
KR19980051164A (en) Metal film structure of color cathode ray tube screen
JPS61183844A (en) Method of forming fluorescent screen for cathode-ray tube

Legal Events

Date Code Title Description
A201 Request for examination
E701 Decision to grant or registration of patent right
GRNT Written decision to grant
FPAY Annual fee payment

Payment date: 20020726

Year of fee payment: 4

LAPS Lapse due to unpaid annual fee