KR910007488B1 - Material for manufacturing screen of color crt - Google Patents

Material for manufacturing screen of color crt Download PDF

Info

Publication number
KR910007488B1
KR910007488B1 KR1019890013726A KR890013726A KR910007488B1 KR 910007488 B1 KR910007488 B1 KR 910007488B1 KR 1019890013726 A KR1019890013726 A KR 1019890013726A KR 890013726 A KR890013726 A KR 890013726A KR 910007488 B1 KR910007488 B1 KR 910007488B1
Authority
KR
South Korea
Prior art keywords
color crt
panel
pva
adc
composition
Prior art date
Application number
KR1019890013726A
Other languages
Korean (ko)
Other versions
KR910007043A (en
Inventor
이광선
Original Assignee
삼성전관 주식회사
김정배
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 삼성전관 주식회사, 김정배 filed Critical 삼성전관 주식회사
Priority to KR1019890013726A priority Critical patent/KR910007488B1/en
Priority to MYPI90001244A priority patent/MY107106A/en
Priority to CN90106616A priority patent/CN1039341C/en
Publication of KR910007043A publication Critical patent/KR910007043A/en
Application granted granted Critical
Publication of KR910007488B1 publication Critical patent/KR910007488B1/en

Links

Classifications

    • 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
    • H01J2209/00—Apparatus and processes for manufacture of discharge tubes
    • H01J2209/01—Generalised techniques
    • H01J2209/012—Coating

Landscapes

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

Abstract

An undercoating solution for a screen film of the color CRT contains pure water, 0.05-0.12% polyvinyl acohol (PVA), 1.0-2.0% Al2(NO3)3.9H2O and 0.05-0.12% ammonium dichromate (ADC). The undercoating solution is coated on the inner side of the panel before the fluorescent layer is formed, and increases an adhesiveness of the layer and the panel.

Description

칼라 음극선관의 스크린막 제조용 하도액Undercoat solution for screen membrane production of color cathode ray tube

본 발명은 칼라 음극선관의 스크린막 제조공정 중 형광체의 부착력을 강화시켜 주도록 블랙매트릭스가 형성된 패널의 내면에 도포되는 하도액(下塗液)에 관한 것이다.The present invention relates to an undercoating solution applied to an inner surface of a panel on which a black matrix is formed so as to enhance adhesion of phosphors in a screen film manufacturing process of a color cathode ray tube.

종래의 일반적인 하도액은 순수(純水)에 8% P.V.A.와 5% A.D.C.를 적정량 혼합하여 된 것으로서, 접착성을 가지는 상기 P.V.A.의 전체 중량비는 대개가 0.15% 정도이다. 이 P.V.A.는 젖은 패널면에 부착되어 유리의 Si분자와 공유결합하여 부착력을 발생시키는 것으로서 형광막이 형성완료된 후에는 소성공정을 통하여 제거되는 것이다. 이때에 P.V.A.는 소성되면서 가스를 발생시키는데 그 양이 너무 많게되면 형광막 표면의 알루미늄막을 들뜨게 하거나, 형광스트라이프를 박시키거나 하게된다.The conventional common undercoating solution is obtained by mixing an appropriate amount of 8% P.V.A. and 5% A.D.C. in pure water, and the total weight ratio of the P.V.A. having adhesiveness is about 0.15%. This P.V.A. is attached to the wet panel surface and covalently bonds with Si molecules of glass to generate adhesion. After the formation of the fluorescent film, the P.V.A. At this time, P.V.A. is fired to generate gas. If the amount is too high, the aluminum film on the surface of the fluorescent film is lifted or the fluorescent stripe is thinned.

결과적으로 P.V.A.의 양을 적절히 조절해야 하는데, P.V.A.의 양을 줄이게 되며 충분한 집착력이 발생되지 않기 때문에 형광스트라이프의 형성상태가 불량하게 되는 것이다.As a result, the amount of P.V.A. should be appropriately adjusted. However, the amount of P.V.A. is reduced and the formation of the fluorescent stripe is poor because sufficient adhesion is not generated.

본 발명은 새로운 조성물로서 상기한 문제점이 개선할 수 있는 칼라 음극선관의 스크린막 제조용 하도액을 제공함에 그 목적이 있다.It is an object of the present invention to provide a coating liquid for screen film production of a color cathode ray tube in which the above problems can be improved as a new composition.

상기의 목적을 달성하기 위하여 본 발명은, P.V.A.와 A.D.C. 및 순수를 주성분으로 하는 하도액에 있어서, 상기 조성물에 질산알루미늄(Al(NO3)3·9H2O)를 적량 첨가하는 한편 상기 P.V.A.의 첨가량을 저감시키도록 하는 점에 그 특징이 있다.In order to achieve the above object, the present invention provides a coating solution containing PVA, ADC and pure water as a main component, wherein an appropriate amount of aluminum nitrate (Al (NO 3 ) 3 .9H 2 O) is added to the composition. There is a feature in that the amount of addition is reduced.

[실시예]EXAMPLE

순수 …………… 970ιpure … … … … … 970ι

8% P.V.A. …………… 9.94㎏8% P.V.A. … … … … … 9.94 kg

5% A.D.C. …………… 145.9ι5% A.D.C. … … … … … 145.9ι

20% Al(NO3)3·9H2O …………… 15ι20% Al (NO 3 ) 3 .9H 2 O. … … … … 15ι

이상과 같은 조성으로서 가장 바람직한 하도액의 조성이 가능한데, 순수에 상기 P.V.A.를 섞어서 적정시간 교반을 하며, 아울러 이에 상기 A.D.C.를 첨가한다. 그리고 상기 질산 알루미늄[Al(NO3)3·9H2O]을 첨가하여 계속 교반한다.As the above composition, the most preferable composition of the undercoating solution is possible. The PVA is mixed with pure water, stirred for a proper time, and the ADC is added thereto. The aluminum nitrate [Al (NO 3 ) 3 .9H 2 O] was added and stirring continued.

상기와 같은 조성으로 제조되는 본 발명의 하도액은 본 발명자의 반복실험에 의한 것으로서 매우 양호한 점착력으로 종래의 하도액에 손색이 없음을 확인할 수 있었다. 특히 상기 하도액의 성분별 함량은 P.V.A.가 0.05∼0.12%이고, Al2(NO3)3·9H2O이 1.0∼2.0%이며, A.D.C.는 0.05∼0.12%인 것이다. 각 성분함량 중 중간값이 가장 바람직하다 할 수 있겠다. 이는 P.V.A.가 감소된 대신에 질산암모늄을 첨가하여 형광막의 제조가 완료된 후 상기 하도액에 의한 접착층이 소각 될 때에 가스 발생량이 감소되어 알루미늄 중착막이나 형광스트라이프에 큰 압력이 가해지지 않기 때문인 것인데, 결과적으로 스크린막이 손상되는 일이 줄어들고 나아가서는 관내 이물질에 의한 샤도우마스크의 구멍막힘 등의 불량요인이 크게 줄어 들었다.The undercoating solution of the present invention prepared with the composition as described above was found to be inferior to the conventional undercoating solution by the inventors' repeated experiments with very good adhesive force. In particular, the content of each component of the bottom coating liquid is 0.05 to 0.12% PVA, 1.0 to 2.0% Al 2 (NO 3 ) 3 9H 2 O, 0.05 to 0.12% ADC. The median value of each component content is most preferable. This is because the amount of gas generated is reduced when the adhesive layer is burnt by incineration after the completion of the manufacture of the fluorescent film by adding ammonium nitrate instead of the decrease of the PVA. As a result, the screen membrane is less damaged, and further, defects such as clogging of the shadow mask by foreign substances in the pipe are greatly reduced.

이상에서와 같이 본 발명의 하도액은 그 조성이 새롭게 변화되어 소성될 때에 형광스트라이프, 알루미늄 중착막을 손상시키는 가스의 발생량이 크게 저감되도록 되어 있는 바, 제품의 불량화를 크게 줄일 수 있는 것이다.As described above, when the composition of the present invention is newly changed and calcined, the amount of generated gas that damages the fluorescent stripe and the aluminum deposition film is greatly reduced, and thus the deterioration of the product can be greatly reduced.

Claims (1)

블랙매트릭스가 형성된 칼라 음극선관용 패널내면에 형광층이 형성되기전에 도포되어, 상기 형광층과 패널내면과의 접착력을 증가시키는 하도액에 있어서, 그 조성물 중, 0.05∼0.12%, P.V.A.와 1.0∼2.0%의 Al2(NO3)3·9H2O와, 0.05∼0.12% A.D.C.가 함유된 것을 특징으로 하는 칼라 음극선관의 스크린막 제조용 하도액.In the coating solution which is applied before the fluorescent layer is formed on the inner surface of the panel for a color cathode ray tube on which the black matrix was formed, and increases the adhesive force between the fluorescent layer and the inner surface of the panel, in the composition, 0.05 to 0.12%, PVA and 1.0 to 2.0 An undercoat solution for producing a screen membrane of a color cathode ray tube, comprising% Al 2 (NO 3 ) 3 .9H 2 O and 0.05 to 0.12% ADC.
KR1019890013726A 1989-09-23 1989-09-23 Material for manufacturing screen of color crt KR910007488B1 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
KR1019890013726A KR910007488B1 (en) 1989-09-23 1989-09-23 Material for manufacturing screen of color crt
MYPI90001244A MY107106A (en) 1989-09-23 1990-07-25 Precoating solution for manufacturing a luminescent screen of color cathode ray tube.
CN90106616A CN1039341C (en) 1989-09-23 1990-07-30 Precoating solution for manufacturing luminesent screen of color cathode ray tube

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1019890013726A KR910007488B1 (en) 1989-09-23 1989-09-23 Material for manufacturing screen of color crt

Publications (2)

Publication Number Publication Date
KR910007043A KR910007043A (en) 1991-04-30
KR910007488B1 true KR910007488B1 (en) 1991-09-26

Family

ID=19290134

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1019890013726A KR910007488B1 (en) 1989-09-23 1989-09-23 Material for manufacturing screen of color crt

Country Status (3)

Country Link
KR (1) KR910007488B1 (en)
CN (1) CN1039341C (en)
MY (1) MY107106A (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR19980023549A (en) * 1996-09-30 1998-07-06 엄길용 Phosphor Composition for Color CRT
CN1323415C (en) * 2004-03-08 2007-06-27 彩虹集团电子股份有限公司 Precoat liquid for colour kinescope and manufcturing method of its film

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SU684053A1 (en) * 1975-05-04 1979-09-05 Предприятие П/Я Г-4219 Luminophore suspension
JPS59219832A (en) * 1983-05-27 1984-12-11 Toshiba Corp Method of forming phosphor screen for color picture tube

Also Published As

Publication number Publication date
KR910007043A (en) 1991-04-30
CN1050395A (en) 1991-04-03
CN1039341C (en) 1998-07-29
MY107106A (en) 1995-09-30

Similar Documents

Publication Publication Date Title
KR910007488B1 (en) Material for manufacturing screen of color crt
US4651053A (en) Display tube having printed copolymer film layer
US5145511A (en) Method for manufacturing a metallized luminescent screen for a cathode-ray tube
KR860001673B1 (en) Formation of fluorescent screen for cathode-ray tube
US4293586A (en) Method for forming a fluorescent screen
EP0824265A3 (en) Method for forming phosphor screen
US3483416A (en) Cathode-ray tube with silicate layer between window and phosphor layer
US2944916A (en) Processing of image display devices
JP3436338B2 (en) Method of manufacturing metallized luminescent screen for cathode ray tube
KR930008617B1 (en) Manufacture of photoelectric screen
KR910007797B1 (en) Base material for forming fluorescent film
US5130190A (en) Process for treating the surface of a fluorescent material
RU1836747C (en) Priming solution
KR930010269B1 (en) Method of making a screen membrane of crt
US4409306A (en) Method of preparing a phosphor suspension
US2032761A (en) Fluorescent coating method
KR950001744B1 (en) High-brightness crt
KR100269917B1 (en) Blue fluorescent and manufacturing method thereof
KR930008615B1 (en) Manufacture of screen on applying luminescent coatings
KR100232802B1 (en) Phosphor forming method of color braun tube
KR100487865B1 (en) Fluorescent film production method of color cathode ray tube and composition of 3-color mixed filter suspension
US5264478A (en) Filming liquid composition for color braun tubes
KR950000794B1 (en) Screen-film forming method of crt
JPH06275209A (en) Zinc sulfide blue phosphor with pigment
SU1833043A1 (en) Luminophor matrix screen of color cathode-ray tube, process of its manufacture and material for manufacture of adhesive coat

Legal Events

Date Code Title Description
A201 Request for examination
G160 Decision to publish patent application
E701 Decision to grant or registration of patent right
GRNT Written decision to grant
FPAY Annual fee payment

Payment date: 20060829

Year of fee payment: 16

LAPS Lapse due to unpaid annual fee