KR920001340B1 - Method manufacturing a flourescent screen of crt - Google Patents

Method manufacturing a flourescent screen of crt Download PDF

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Publication number
KR920001340B1
KR920001340B1 KR1019890013544A KR890013544A KR920001340B1 KR 920001340 B1 KR920001340 B1 KR 920001340B1 KR 1019890013544 A KR1019890013544 A KR 1019890013544A KR 890013544 A KR890013544 A KR 890013544A KR 920001340 B1 KR920001340 B1 KR 920001340B1
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KR
South Korea
Prior art keywords
panel
fluorescent film
phosphor slurry
section
distance
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KR1019890013544A
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Korean (ko)
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KR910007042A (en
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임성하
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삼성전관 주식회사
김정배
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Priority to KR1019890013544A priority Critical patent/KR920001340B1/en
Priority to GB9020504A priority patent/GB2236428B/en
Priority to CN90107958A priority patent/CN1031086C/en
Publication of KR910007042A publication Critical patent/KR910007042A/en
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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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B13/00—Machines or plants for applying liquids or other fluent materials to surfaces of objects or other work by spraying, not covered by groups B05B1/00 - B05B11/00
    • B05B13/02—Means for supporting work; Arrangement or mounting of spray heads; Adaptation or arrangement of means for feeding work
    • B05B13/0221—Means for supporting work; Arrangement or mounting of spray heads; Adaptation or arrangement of means for feeding work characterised by the means for moving or conveying the objects or other work, e.g. conveyor belts
    • 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
    • H01J9/221—Applying luminescent coatings in continuous layers
    • H01J9/223—Applying luminescent coatings in continuous layers by uniformly dispersing of liquid

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

Abstract

The manufacturing mtehod for fluorescent film comprises rotating the panel axis within the designed range of angle ( ) to make the panel reciprocate the designed distance (l) with respect to the slurry spraying nozzle. Especially the panel reciprocating the distance (l) by proceeding a distance (l') and retreating a distancee (l"), which is much shorter than (l'). The method can diffuse uniformly the fluorescent slurry on the inside of the panel before and after injecting it and thus provide a very uniform and fine fluorescent film with any thickness irregularity or spot.

Description

음극선관의 형광면 제조방법Method for manufacturing fluorescent surface of cathode ray tube

제1도는 종래의 형광면 제조방법에 있어서 패널 내면에 형광체를 주입하는 방법을 나타낸 캐리어의 측면도.1 is a side view of a carrier showing a method of injecting a phosphor into an inner surface of a panel in a conventional fluorescent surface manufacturing method.

제2도는 본 발명의 형광면 제조방법에 있어서 패널 내면에 형광체를 주입하는 방법을 나타낸 캐리어의 측면도.Figure 2 is a side view of a carrier showing a method of injecting a phosphor to the inner surface of the panel in the method for manufacturing a fluorescent surface of the present invention.

제3도는 본 발명에 의해 형광체를 패널 내면에 주입할 때에 패널과 노즐과의 상대위치를 나타낸 패널의 평면도.3 is a plan view of a panel showing the relative position of the panel and the nozzle when the phosphor is injected into the panel inner surface according to the present invention.

제4도는 본 발명의 다른 실시예로서 고정위치의 노즐로부터 형광체가 공급될 때에 패널의 운동상태를 나타낸 패널의 평면도.4 is a plan view of a panel showing the state of movement of the panel when the phosphor is supplied from the nozzle in the fixed position as another embodiment of the present invention.

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

C : 캐리어 S : 형광체 슬러리C: carrier S: phosphor slurry

P : 패널 N : 노즐P: Panel N: Nozzle

X-X, X′-X′ : 캐리어의 회전축 θ : 캐리어의 요동각도X-X, X'-X ': Rotation axis of carrier θ: Rotation angle of carrier

ℓ : 설정된 구간 ℓ′ : 소구간ℓ: Set Section ℓ ′: Small Section

ℓ″ : 후퇴거리ℓ ″: Retraction

본 발명은 음극선관의 형광면 제조방법에 관한 것으로서, 상세하게는 음극선관의 패널에 형광체 슬러리를 주입하는 방법에 관한 것이다.The present invention relates to a method for producing a fluorescent surface of a cathode ray tube, and more particularly, to a method of injecting a phosphor slurry into a panel of a cathode ray tube.

일반적인 형광막 제조공정에 있어서 패널 내면에 형광체 슬러리를 주입하는 방법은 제1도에 도시된 바와같이 캐리어(C)에 장착된 패널(P)을 일정각도 경사진 회전축(X-X)상을 회전시키면서, 이의 내면에 노즐(N)을 통하여 형광체 슬러리(S)를 주입하도록 되어 있는데, 이는 공급된 형광체 슬러리가 원심력에 의해 패널 내면에 확포시키고자 하는 것이다. 그러나 이와 같은 방법에 의해 형성되는 형광막은 비교적 그 두께가 균일하다고 볼 수는 있으나 여전히 막두께의 불균일에 따른 불량율은 상당한 비율을 차지하고 있다. 특히 계속 일방향으로만 저속·고속으로 회전시키도록 되어 있기 때문에 패널의 중앙부위보다 그 주변부위의 막두께가 두꺼우며 특히 패널구석 부분에 형광체 슬러리가 두껍게 응고해 있게 됨으로써 막두께 불량에 의한 막얼룩이 발생되는 등의 문제가 있다.In the method of injecting the phosphor slurry into the inner surface of the panel in a general manufacturing process of the fluorescent film, as shown in FIG. 1, the panel P mounted on the carrier C is rotated while rotating on an axis of rotation (XX) inclined at a predetermined angle. Phosphor slurry (S) is injected into the inner surface through the nozzle (N), which is to spread the phosphor slurry on the inner surface of the panel by centrifugal force. However, although the thickness of the fluorescent film formed by such a method can be regarded as relatively uniform, still, the defective rate due to the nonuniformity of the film thickness occupies a considerable proportion. In particular, since it is designed to continuously rotate at low speed and high speed only in one direction, the film thickness of the peripheral part is thicker than the center part of the panel. Especially, the phosphor slurry solidifies thickly in the corner of the panel, resulting in film staining due to poor film thickness. There is a problem such as being.

본 발명은 상기한 문제점을 개선할 수 있는 음극선관의 제조방법을 제공함에 그 목적이 있다.It is an object of the present invention to provide a method for producing a cathode ray tube that can improve the above problems.

또한 본 발명은 형광체 슬러리 중의 형광체 입자의 침강을 촉진하여 짧은 시간내에 매우 치밀한 조직의 형광막을 형성할 수 있도록 된 음극선관의 형광막 제조방법을 제공함에 그 목적이 있다.In addition, an object of the present invention is to provide a method for producing a fluorescent film of a cathode ray tube, which facilitates sedimentation of phosphor particles in a phosphor slurry to form a fluorescent film having a very dense structure within a short time.

상기의 목적을 달성하기 위하여 본 발명은, 경사진 회전축을 중심으로 하여 패널을 회전시키면서 이에 형광체 슬러리를 주입 공급하며, 주입이 완료된 후에도 일정시간 패널을 회전시키도록 하는 형광막 제조방법에 있어서, 상기 패널의 회전축의 경사각을 패널의 회전과 함께 변화시키도록 하여서, 형광체 슬러리를 패널의 내면에 확포시키는 원심력이 규칙적 또는 불규칙적으로 변화되도록 하는 점에 특징이 있다.In order to achieve the above object, the present invention, in the fluorescent film manufacturing method to rotate the panel around the inclined axis of rotation while injecting and supplying the phosphor slurry, and to rotate the panel for a certain time after the injection is completed, the It is characterized in that the angle of inclination of the rotation axis of the panel is changed with the rotation of the panel so that the centrifugal force for spreading the phosphor slurry on the inner surface of the panel is changed regularly or irregularly.

이하 첨부된 도면을 통하여 본 발명의 실시예를 상세히 설명한다.Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

[실시예 1]Example 1

제2도에 도시된 바와 같이 패널(P)의 내면에 그 상방의 노즐(N)을 통하여 형광체 슬러리(S)를 공급한다. 이때에 상기의 패널(P)을 그 내면중앙의 회전중심을 중심으로 하여 적정속도 회전시키며, 아울러서 상기의 회전 중심의 기울기를 변화시킨다. 이때에 상기 회전중심의 획동각도 θ는 X-X와 X′-X′의 사이각으로서 제3도에 도시된 바와 같이 노즐(N)로부터 패널이 벗어나지 않는 정도인 구간 ℓ을 왕복되도록 설정한다.As shown in FIG. 2, the phosphor slurry S is supplied to the inner surface of the panel P through the nozzle N above it. At this time, the panel P is rotated at an appropriate speed around the center of rotation of the inner surface of the panel P, and the inclination of the center of rotation is changed. At this time, the stroke angle θ of the rotational center is set as the angle between X-X and X'-X 'so as to reciprocate the section l, which is the extent that the panel does not deviate from the nozzle N as shown in FIG.

이와 같이 하면 패널의 회전에 따른 원심력이 복합적으로 변화되어서 패널에 대한 형광체 슬러리 확포운동이 매우 활발하게 된다. 특히 패널 모서리부위의 형광체 슬러리의 집중이 방지된다. 결론적으로 형광체 슬러리가 매우 고른 두께로서 패널의 내면에 확포되게 된다.In this case, the centrifugal force of the panel is changed in a complex manner, and thus, the phosphor slurry expansion movement on the panel becomes very active. In particular, concentration of the phosphor slurry at the edge of the panel is prevented. As a result, the phosphor slurry is spread on the inner surface of the panel with a very even thickness.

[실시예 2]Example 2

제2도에서와 같은 상태로 상기 패널(P)이 설정각 θ의 범위내를 왕복 요동되도록 하되, 제4도에 도시된 바와 같이 설정된 왕복구간(ℓ)를 단순히 왕복운동되게 하지 않고 상기 왕복거리 ℓ을 분할하여 된 전진구간(ℓ′)을 전진운동되게 하였다가 이보다 짧은 후진구간(ℓ″)을 후퇴시키며 다시 ℓ′만큼 전진시키도록 한다. 즉 상기 패널의 회전중심의 요동각도 범위는 θ가 되도록 하되 일시에 각도 θ를 이동시키지 않고 분할된 소폭의 거리를 왕복요동되도록 하여서 반복된 왕복요동운동을 통하여 상기 θ각도의 회동이 이루어지도록 한다. 한편, 상기 소폭거리의 왕복요동운동에 있어서 후퇴운동거리(ℓ″)를 매우 짧게 하여서 각도 θ구간을 충격적인 간헐운동이 되게도 할 수 있다.In the same state as in FIG. 2, the panel P is reciprocated in the range of the set angle θ, and the reciprocating distance is achieved without simply reciprocating the set reciprocating section l as shown in FIG. The forward section (ℓ ') is divided forward by the forward movement, and the shorter backward section (ℓ ″) is retracted and then forwarded by ℓ'. In other words, the rotation angle range of the center of rotation of the panel is θ, but the angular rotation is performed through repeated reciprocating motions by reciprocating the divided narrow distance without moving the angle θ at one time. On the other hand, in the reciprocating oscillation movement of the narrow distance, the retreat movement distance l ″ may be made very short so that the angle θ section becomes a shock intermittent movement.

이상과 같은 방법으로서 형광체 슬러리를 확포하게 되면, 복합적으로 변화되는 원심력에 의해 형광체 슬러리가 확포되며, 소폭의 거리의 왕복운동에 따른 충격력이 형광체 슬러리에 가해짐으로써 관성에 의한 확포효율이 크게 증대되며 나아가서는 형광체 슬러리로 부터의 형광체입자 침강이 촉진된다.When the phosphor slurry is expanded by the above method, the phosphor slurry is expanded by the centrifugal force which is changed in a complex manner, and the expansion efficiency due to inertia is greatly increased by applying the impact force due to the reciprocating movement of a small distance to the phosphor slurry. Furthermore, sedimentation of the phosphor particles from the phosphor slurry is promoted.

이상에서와 같은 실시예들에서 살펴본 바와 같이 본 발명은 패널의 회전중심을 변화시키고 나아가서는 형광체 슬러리에 충격력을 가하도록 함으로써 매우 균이하고 치밀한 형광막 형성을 가능케 하는 바, 결론적으로 막두께의 불균일에 기인한 막얼룩이 없고 매우 높은 휘도의 형광막을 형성할 수 있는 것이다.As described in the above embodiments, the present invention enables the formation of a very homogeneous and dense fluorescent film by changing the center of rotation of the panel and by applying an impact force to the phosphor slurry. Consequently, the film thickness is nonuniform. It is possible to form a fluorescent film of very high luminance without a film stain caused by

Claims (3)

형광체 슬러리 주입시와, 주입 후에 패널을 회전시켜서 상기 형광체 슬러리가 패널의 내면에 고루 확포되도록 하는 형광막 제조방법에 있어서, 상기 패널의 회전축을 설정된 각도(θ) 범위내의 구간을 회동운동시킴으로써 상기 패널이 형광체 슬러리를 도포하는 노즐에 대해 설정된 구간(ℓ)을 왕복운동하게 하는 것을 특징으로 하는 음극선관의 형광막 제조방법.A method of manufacturing a fluorescent film in which a phosphor slurry is evenly spread on an inner surface of a panel by rotating a panel during injection of a phosphor slurry and after the injection, wherein the panel is rotated by rotating the section of the panel within a set angle (θ). A method for producing a fluorescent film of a cathode ray tube, characterized in that the section (l) set for the nozzle for applying the phosphor slurry is reciprocated. 제1항에 있어서, 상기 패널이 소구간(ℓ′)를 전진한 뒤 이보다 작은 후퇴거리(ℓ″)를 후퇴하는 전후진운동을 반복하여 상기 설정된 구간(ℓ)을 왕복운동하는 것을 특징으로 하는 음극선관의 형광막 제조방법.The method of claim 1, wherein the panel reciprocates the set section (l) by repeating the forward and backward movement of retreating the smaller retraction distance (l ″) after advancing the small section (l '). Method for producing fluorescent film of cathode ray tube. 제2항에 있어서, 상기 후퇴거리(ℓ″)가 상기 소구간(ℓ′)에 비해 매우 짧도록 하는 것을 특징으로 하는 음극선관의 형광막 제조방법.The method of manufacturing a fluorescent film of a cathode ray tube according to claim 2, wherein the retreat distance (l ″) is very short compared to the small section (l ').
KR1019890013544A 1989-09-20 1989-09-20 Method manufacturing a flourescent screen of crt KR920001340B1 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
KR1019890013544A KR920001340B1 (en) 1989-09-20 1989-09-20 Method manufacturing a flourescent screen of crt
GB9020504A GB2236428B (en) 1989-09-20 1990-09-20 Process for coating phosphor slurry on a cathode ray tube
CN90107958A CN1031086C (en) 1989-09-20 1990-09-20 Process for coating phosphor slurry on inner surface of CRT

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1019890013544A KR920001340B1 (en) 1989-09-20 1989-09-20 Method manufacturing a flourescent screen of crt

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KR910007042A KR910007042A (en) 1991-04-30
KR920001340B1 true KR920001340B1 (en) 1992-02-10

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CN (1) CN1031086C (en)
GB (1) GB2236428B (en)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2281873A (en) * 1993-09-15 1995-03-22 Denby Pottery Company Limited Glazing holloware internally on rotating support which can be tipped to remove excess glaze
JP2001508929A (en) * 1997-09-29 2001-07-03 コーニンクレッカ フィリップス エレクトロニクス エヌ ヴィ Coating application method and device
US6103297A (en) * 1998-01-14 2000-08-15 Matsushita Electronics Corporation Method of manufacturing cathode-ray tube
CN111085500B (en) * 2019-12-16 2021-04-27 赣州中蓝稀土新材料科技有限公司 Fluorescent powder spraying equipment with bubble removing function

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Publication number Priority date Publication date Assignee Title
GB767554A (en) * 1954-01-05 1957-02-06 Westinghouse Electric Int Co Improvements in or relating to cathode ray tubes
NL6713664A (en) * 1967-10-07 1969-04-09
GB1566113A (en) * 1976-08-31 1980-04-30 Philips Electronic Associated Providing a layer on a substrate
JPS60207229A (en) * 1984-03-30 1985-10-18 Toshiba Corp Formation of phosphor screen of cathode-ray tube
GB2225157A (en) * 1988-10-29 1990-05-23 Samsung Electronic Devices Cathode ray tube screen manufacture

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GB2236428A (en) 1991-04-03
GB9020504D0 (en) 1990-10-31
KR910007042A (en) 1991-04-30
CN1050466A (en) 1991-04-03
CN1031086C (en) 1996-02-21
GB2236428B (en) 1994-03-30

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