KR910007797B1 - Base material for forming fluorescent film - Google Patents
Base material for forming fluorescent film Download PDFInfo
- Publication number
- KR910007797B1 KR910007797B1 KR1019880014180A KR880014180A KR910007797B1 KR 910007797 B1 KR910007797 B1 KR 910007797B1 KR 1019880014180 A KR1019880014180 A KR 1019880014180A KR 880014180 A KR880014180 A KR 880014180A KR 910007797 B1 KR910007797 B1 KR 910007797B1
- Authority
- KR
- South Korea
- Prior art keywords
- fluorescent film
- pure water
- base material
- alum
- ammonium dichromate
- Prior art date
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Classifications
-
- 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
- H01J29/24—Supports for luminescent material
-
- 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
- H01J9/2271—Applying luminescent coatings with luminescent material discontinuously arranged, e.g. in dots or lines by photographic processes
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/28—Nitrogen-containing compounds
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D129/00—Coating compositions based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by an alcohol, ether, aldehydo, ketonic, acetal, or ketal radical; Coating compositions based on hydrolysed polymers of esters of unsaturated alcohols with saturated carboxylic acids; Coating compositions based on derivatives of such polymers
- C09D129/02—Homopolymers or copolymers of unsaturated alcohols
- C09D129/04—Polyvinyl alcohol; Partially hydrolysed homopolymers or copolymers of esters of unsaturated alcohols with saturated carboxylic acids
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03F—PHOTOMECHANICAL PRODUCTION OF TEXTURED OR PATTERNED SURFACES, e.g. FOR PRINTING, FOR PROCESSING OF SEMICONDUCTOR DEVICES; MATERIALS THEREFOR; ORIGINALS THEREFOR; APPARATUS SPECIALLY ADAPTED THEREFOR
- G03F7/00—Photomechanical, e.g. photolithographic, production of textured or patterned surfaces, e.g. printing surfaces; Materials therefor, e.g. comprising photoresists; Apparatus specially adapted therefor
- G03F7/004—Photosensitive materials
- G03F7/09—Photosensitive materials characterised by structural details, e.g. supports, auxiliary layers
- G03F7/11—Photosensitive materials characterised by structural details, e.g. supports, auxiliary layers having cover layers or intermediate layers, e.g. subbing layers
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Organic Chemistry (AREA)
- Medicinal Chemistry (AREA)
- Architecture (AREA)
- Health & Medical Sciences (AREA)
- Physics & Mathematics (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Structural Engineering (AREA)
- Polymers & Plastics (AREA)
- General Physics & Mathematics (AREA)
- Life Sciences & Earth Sciences (AREA)
- Materials Engineering (AREA)
- Wood Science & Technology (AREA)
- Manufacturing & Machinery (AREA)
- Adhesives Or Adhesive Processes (AREA)
- Paints Or Removers (AREA)
- Formation Of Various Coating Films On Cathode Ray Tubes And Lamps (AREA)
Abstract
Description
본 발명은 칼라브라운관이 형광막을 제작하는데 사용하는 하도액(下塗液) 조성물에 관한 것으로서, 하도액의 겔(Gel)화에 따른 패널 내면에서의 응집이나, 형광막의 막얼룩등을 방지할 수 있도록 그 조성이 바뀐 것에 관한 것이다.BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a bottom coat composition used by a color brown tube for manufacturing a fluorescent film. The present invention relates to preventing agglomeration and film staining of a fluorescent film due to gelation of the coat. It is about the composition changed.
하도액은 패널 내면에 대한 블랙매트릭스(Black Matrix)형 작업이 완료된 후 형광체 도포 공정전에 패널 내면에 대한 형광막의 부착강도를 강화시키기 위한 소재로 사용된다. 이러한 하도액의 주성분으로 폴리비닐알콜(P.V.A), 중크롬산 암모늄(A.P.C) 및 순수(純水)로서 민생용 브라운관 및 0.52pitch이하의 고정 세 브라운관(예를들어 컴퓨터용 칼라모니터)인 경우에는 명반[Aluminium Sodium Sulfate (Al.Na(SO4)2,접착력이 강하여서 패널유리 내면에 형광막이 충분한 접착력으로서 부착될 수 있도록 도와준다. 그러나 상기와 같은 통상의 조성물이 함유된 하도액은 사용도중에 상기 명반에 의해 겔화가 촉진됨으로써 하도액 도포공정중에 수시로 하도액 유면에 형성된 겔층을 제거하여야 하였다. 이러한 하도액이 패널내면에 도포되었을 때 미처 제거되지 못한 겔(Gel)이 패널 내면에 부착되면 부분적으로 돌출된 응집부위가 발생되고 결과적으로 후속되는 작업에서 도포되는 형광막상에서 부분적으로 형광체가 떨어져 막이 형성되지 않게 되거나 형광막상에 얼룩이 발생됨으로써 불량처리가 되고 만다. 또한 하도액에 겔이 발생되면 겔이 완전제거된다 하여도 접착유효 성분이 겔과 함께 제거된 관계로 하도액의 접착력이 떨어진다.The undercoat is used as a material to enhance the adhesion strength of the fluorescent film to the inner surface of the panel before the phosphor coating process after the completion of the black matrix type work on the inner surface of the panel. As the main components of such an undercoating solution, polyvinyl alcohol (PVA), ammonium dichromate (APC), and pure water as a pure water tube and a fixed fine CRT tube of 0.52 pitch or less (for example, a color monitor for a computer) Aluminum Sodium Sulfate (Al.Na (SO 4 ) 2 , strong adhesive force helps to attach the fluorescent film to the inner surface of the panel glass with sufficient adhesive strength. As gelation was promoted, the gel layer formed on the lower surface of the undercoating solution was frequently removed during the application of the undercoating solution. Aggregates are generated and consequently, the phosphor is partially dropped on the fluorescent film to be applied in a subsequent operation so that no film is formed. And Manda, and the poor treatment by being caused to the fluorescent stain film. In addition, when the undercoating liquid in the gel generation is complete the gel is removed by a liquid adhesive is also poor primer adhesion to the active ingredient is removed, with gel relationship.
본 발명은 상기와 같은 겔화가 야기되지 않아서 이에 의한 패널의 형광막에 영향을 미치지 않는 칼라브라운관 형광막 제작용 하도액 조성물을 제공함에 그 목적이 있다.It is an object of the present invention to provide an undercoat composition for preparing a color-brown tube fluorescent film which does not affect the fluorescent film of the panel by causing no gelation as described above.
상기의 목적을 달성하기 위하여 본 발명은 하도액의 주성분을 이루는 순수, 폴리비닐, 알콜, 중크롬산 암모늄 및 명반중에서 겔화를 촉진하는 명반을 다른 화합물로서 대치한다.In order to achieve the above object, the present invention replaces alum which promotes gelation with other compounds in pure water, polyvinyl, alcohol, ammonium dichromate and alum which constitute the main component of the coating composition.
우선 제법(製法)을 설명하여 보면, 다량의 순수에 대하여 약8%정도의 폴리비닐 알콜을 혼합한 수에 이를 교반하여서 약 5%정도의 중크롬산 암모늄과 약 0.3-0.5%정도의 A1(NO3)3·9H2O를 혼합한다. 이와 같이 하면 명반이 함유되었을 때와는 달리 겔이 발생하지 않는다. 이러한 조성비는 본 발명자의 반목적인 실험에 의한 결과로서 매우 좋은 효과를 거두었다.First of all, the manufacturing method is described, about 5% of ammonium dichromate and about 0.3-0.5% of A1 (NO 3) by stirring about 8% of polyvinyl alcohol mixed with a large amount of pure water. ) Mix 3 · 9H 2 O. In this way, gel does not occur unlike when alum is contained. This composition ratio had a very good effect as a result of the present inventors' anti-optical experiment.
질산 알루미늄으로 명반을 대체했을 때 겔이 발생되지 않는 이유는 다음과 같다.The reason why gel is not generated when alum is replaced with aluminum nitrate is as follows.
명반은 순수내에서 알루미늄이온(A1+3), 나트륨이온(Na+) 및 황산이온(SO4 -2)으로 이온화되며 중크롬산암모늄은 질산이온(NH4 +)과 크롬산이온(Cr2O7 -2)으로 이온화되는데, 이들중 명반으로부터의 나트륨이온과 중크롬산 암모늄으로부터 크롬산이온이 반응하여 중크롬산 나트륨(SDC:Na2Cr2O7)을 생성하는데 생성된 중크롬산 나트륨과 폴리비닐알콜 및 중크롬산 암모늄간에 암반응이 진행되어 겔화되는 것이다.Alum is aluminum ions in the pure water (A1 +3), sodium ion (Na +) and sulfate ions and ionized (SO 4 -2) is ammonium dichromate nitrate ion (NH 4 +) and the chromate ions (Cr 2 O 7 - 2 ), among which sodium ions from alum and chromate ions from ammonium dichromate react to produce sodium dichromate (SDC: Na 2 Cr 2 O 7 ), a dark reaction between sodium bichromate, polyvinyl alcohol and ammonium dichromate. This proceeds to gelation.
한편, 본 발명의 방법에 따라 첨가되는 질산 알루미늄은 순수내에서 알루미늄이온(Al+3)과 질산이온(NO3 -)으로 이온화되며 이들은 폴리비닐 알콜 및 중크롬산 암모늄과 반응하지 않기 때문에 겔화되지 않는다.On the other hand, aluminum nitrate added according to the method of the present invention is ionized with aluminum ions (Al +3 ) and nitrates (NO 3 − ) in pure water and they do not gelate because they do not react with polyvinyl alcohol and ammonium dichromate.
패널 내면, 하도액이 도포된 상부에 형광체 조합액을 도포할 때 응집부분에 부착되는 형광체 입자들은 다른면과 비교할 때 도드라지게 되는데 이후 수행되는 노광 공정시 이 부분은 광량이 부족하게 되어 형광체 떨어짐을 유발시키기도 한다.Inside the panel, the phosphor particles adhering to the agglomerated portion when the phosphor combination is applied to the upper part of the undercoating solution become drastically compared with the other surface. It is also triggered.
명반 사용시 형광체 떨어짐이 3 내지 4%이던 것에 비해 본 발명의 방법에 따라 형광막을 제조하면 0.05 내지 0.6%에 불과하다. 그리고 하도액 조성물에 명반 대신 질산 알루미늄을 첨가하더라도 그 접착력은 동일한데 비하여 비용면에서는 거의 1/10가량 절감되는 효과를 얻을 수 있게 된다.In contrast, when the alumina was used, the phosphor drop was only 3 to 4%, and when the fluorescent film was prepared according to the method of the present invention, it was only 0.05 to 0.6%. In addition, even if aluminum nitrate is added to the coating composition instead of alum, the adhesive strength is the same, but in terms of cost, it is possible to obtain an effect of almost 1/10 reduction.
결론적으로, 본 발명에 의하면 하도액의 한 구성물이었던 명반이 Al(NO3)3·9H2O로 대치되는 바, 이에 의하면 전기한 바와 같이 겔이 발생되지 않고 반면에 그 접착력은 형광막을 패널 내면에 충분한 강도로서 부착시킬 수 있는 정도가 되었다.In conclusion, according to the present invention, the alum, which was a component of the undercoating solution, was replaced by Al (NO 3 ) 3 · 9H 2 O. As a result, as described above, no gel was generated, whereas the adhesive strength of the alumina film It became the grade which can be made to adhere by sufficient strength to the.
또한 명반에 비해 이에 대치되는 A1(ND3)3· 9H2O의 재료비가 매우 저렴하다. 또한 종래와는 달리 겔에 의한 패널의 불량률이 거의 없게 되므로 양품(良品)수득률이 크게 향상하여 생산성 향상과 더불어 이러한 가격면에서의 장점은 고가품인 공업용 칼라브라운관의 가격을 낮추는 것으로서 소비자의 소요경비부담을 줄여줄 수 있다.In addition, the material cost of A1 (ND 3 ) 3 9H 2 O is very low compared to alum. In addition, unlike the conventional method, since there is almost no defect rate of the panel due to the gel, the yield rate of the product is greatly improved, and the productivity is improved, and this price advantage is to lower the price of the industrial color brown tube, which is expensive, and the cost of consumer's cost is burdened. Can be reduced.
Claims (1)
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1019880014180A KR910007797B1 (en) | 1988-10-29 | 1988-10-29 | Base material for forming fluorescent film |
CN89108258A CN1028578C (en) | 1988-10-29 | 1989-10-27 | Pre-coating composition for luminescent screen of cathode ray tube |
GB8924258A GB2224281B (en) | 1988-10-29 | 1989-10-27 | Pre-coating compositions for luminescent screens |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1019880014180A KR910007797B1 (en) | 1988-10-29 | 1988-10-29 | Base material for forming fluorescent film |
Publications (2)
Publication Number | Publication Date |
---|---|
KR900007035A KR900007035A (en) | 1990-05-09 |
KR910007797B1 true KR910007797B1 (en) | 1991-10-02 |
Family
ID=19278881
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
KR1019880014180A KR910007797B1 (en) | 1988-10-29 | 1988-10-29 | Base material for forming fluorescent film |
Country Status (3)
Country | Link |
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KR (1) | KR910007797B1 (en) |
CN (1) | CN1028578C (en) |
GB (1) | GB2224281B (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
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WO2023191681A1 (en) * | 2022-03-28 | 2023-10-05 | Gradientech Ab | Adherence enhancing coating for plastic surfaces |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3823080A (en) * | 1973-01-11 | 1974-07-09 | Gte Sylvania Inc | Process for removing coating from a cathode ray tube mask member |
SU684053A1 (en) * | 1975-05-04 | 1979-09-05 | Предприятие П/Я Г-4219 | Luminophore suspension |
-
1988
- 1988-10-29 KR KR1019880014180A patent/KR910007797B1/en not_active IP Right Cessation
-
1989
- 1989-10-27 GB GB8924258A patent/GB2224281B/en not_active Expired - Lifetime
- 1989-10-27 CN CN89108258A patent/CN1028578C/en not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
KR900007035A (en) | 1990-05-09 |
CN1042447A (en) | 1990-05-23 |
GB2224281B (en) | 1992-03-25 |
GB2224281A (en) | 1990-05-02 |
CN1028578C (en) | 1995-05-24 |
GB8924258D0 (en) | 1989-12-13 |
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