CN1028578C - Pre-coating composition for luminescent screen of cathode ray tube - Google Patents

Pre-coating composition for luminescent screen of cathode ray tube Download PDF

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Publication number
CN1028578C
CN1028578C CN89108258A CN89108258A CN1028578C CN 1028578 C CN1028578 C CN 1028578C CN 89108258 A CN89108258 A CN 89108258A CN 89108258 A CN89108258 A CN 89108258A CN 1028578 C CN1028578 C CN 1028578C
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CN
China
Prior art keywords
coating composition
ray tube
cathode ray
composition
adhesive
Prior art date
Legal status (The legal status 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 status listed.)
Expired - Fee Related
Application number
CN89108258A
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Chinese (zh)
Other versions
CN1042447A (en
Inventor
金现相
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Samsung SDI Co Ltd
Original Assignee
Samsung Display Devices Co Ltd
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 Samsung Display Devices Co Ltd filed Critical Samsung Display Devices Co Ltd
Publication of CN1042447A publication Critical patent/CN1042447A/en
Application granted granted Critical
Publication of CN1028578C publication Critical patent/CN1028578C/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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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
    • 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
    • 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

A pre-coating composition for use in the manufacture of the luminescent surface of a cathode ray tube contains a binder as the base of the pre-coating layer, a photosensitive agent for photosensitizing the binder, aluminum nitrate as an adhesive strength reinforcing agent for reinforcing the adhesive strength of the pre-coating layer, water, and other optional ingredients. The adhesive strength is not impaired, and curing speed is lowered so that premature curing should not occur.

Description

Pre-coating composition for luminescent screen of cathode ray tube
The present invention relates to a kind of fluoroscopic pre-coating composition that is used to make cathode ray tube, specifically relate to the pre-coating composition of the adhesion strength between a kind of inner surface that is used to strengthen fluorescence coating and support the fluorescence coating panel.
In general, when making phosphor screen, a kind of aqueous slurry is coated the glass panel inner surface, and this slurry contains phosphate material particle and a kind of smooth adhesive (being photosensitive adhesive); Then, by methods such as photoetchs fluorescence coating is made point-like or line shape form.
Yet as United States Patent (USP) 4,284,694 is described, when making this kind phosphor screen, for the adhesion strength between the inner surface that strengthens fluorescence coating and panel, need be before the surface form fluorescence coating within the panel, coating skim such as PVA(polyvinyl alcohol), this is a kind of method that is referred to as precoating that extensively is employed.
By using this precoating solution, can be so that the phosphate material amount of bonding increase and can improve fluorescence, and habitual precoating solution main component is PVA, ammonium dichromate (ADC) and pure water.
Yet industrial application, the applied cathode ray tube of color monitor as computer is used just needs high-resolution, therefore must be very narrow between point with interfringe spacing, and requirement strengthens the adhesion strength of precoating solution.Need add a kind of bonding reinforcing agent when therefore the precoating solution of industrial application prepares.
The bonding reinforcing agent of the precoating solution of industrial common extensive use is aluminum sodium sulfate [AlNa(SO 4) 212H 2O], its addition is the 0.4%(weight of precoating solution total amount).This aluminum sodium sulfate can make fluorescent material be incorporated into the glass panel inner surface more firmly.But its shortcoming is that the precoating solution curing rate that contains this aluminum sodium sulfate consequently is easy to gelation too soon.
In addition, the precoating solution that contains this aluminum sodium sulfate gets final product partial gelization, and makes the curing rate of precoating solution inhomogeneous, and make the precoating solution coating layer thickness inhomogeneous when it is coated with.
Thereby, can cause the fluorescence coating part by bulging on the panel or producing spot as being coated with fluorescence coating as follows, therefore diminish product quality.
For fear of this phenomenon, when the coating precoating solution, need remove the partial gel layer frequently, and need to remove this gelation layer, thereby reduce productivity ratio through artificial visually examine's method.In addition, when removing the gelation layer, also removed the active ingredient in the precoating solution, and weakened the adhesive property of precoating solution.
The object of the invention is to overcome the shortcoming of common method.
Be that the object of the invention is to provide a kind of pre-coating composition that is used to make the novelty of cathode ray tube screen, precoating solution can generating unit not divide gelation by this, can strengthen adhesion strength simultaneously.
For achieving the above object, comprise by pre-coating composition of the present invention: form the adhesive of precoated shet matrix, be used to make the photoactivated sensitising agent of adhesive, be used to strengthen the bonding reinforcing agent of precoated shet adhesion strength, pure water is wherein used aluminum nitrate [Al(NO 3) 39H 2O] as described bonding reinforcing agent.
According to the present invention, the precoating solution that contains aluminum nitrate can demonstrate the precoating solution adhesion strength much at one with contains sodium sulfate aluminium commonly used.Simultaneously its gelation speed is also not too fast, thereby can not produce the phenomenon of part premature setting when being coated with this solution.Therefore be that the shortcoming that overcomes the pre-coating composition of contains sodium sulfate aluminium commonly used has provided approach.
Above-mentioned purpose of the present invention and other advantage can obtain explanation by the description of the preferred embodiment of the present invention.
Pre-coating composition of the present invention comprises following component, and each constituent content (weight portion) is exemplified below: PVA, 5-11%(preferably 8%); Adhesive, ammonium dichromate, 2-8%(preferably 5%); Sensitising agent, aluminum nitrate Al(NO 3) 39H 2O, 0.1-1.5%, bonding reinforcing agent; And pure water.
Can be about to contain the aqueous solution stirring of pure water and PVA, and under agitation add ammonium dichromate and aluminum nitrate by following method preparation by precoating solution of the present invention.
Precoating solution is coated with and forms stratiform by common method, therefore its detailed description is omitted.
Effectiveness to the pre-coating composition of above-mentioned composition and preparation is described as follows.
Application is compared with the precoating solution commonly used that contains aluminum sodium sulfate by pre-coating composition of the present invention, its adhesion strength does not reduce, and its curing rate is very slow simultaneously, consequently when being coated with, it can generating unit not divide the gelation phenomenon, thereby can boost productivity, and the quality of using the cathode ray tube that pre-coating composition of the present invention makes can improve greatly.

Claims (6)

1, a kind of pre-coating composition that is used to make the cathode ray tube fluorescent surface, said composition contains: as the adhesive of this precoated shet matrix, with so that the photoactivated sensitising agent of described adhesive, be used to strengthen the bonding reinforcing agent of precoated shet adhesion strength, and water, it is characterized in that described bonding reinforcing agent is an aluminum nitrate.
2, by the pre-coating composition of claim 1, wherein said adhesive is a polyvinyl alcohol.
3, by the pre-coating composition of claim 1, wherein said sensitising agent is an ammonium dichromate.
4, by the pre-coating composition of claim 1, the addition of wherein said aluminum nitrate is the 0.1-1.5%(weight of total composition).
5, by the pre-coating composition of claim 2, the addition of wherein said polyvinyl alcohol is the 5-11%(weight of total composition).
6, by the pre-coating composition of claim 3, the addition of wherein said ammonium dichromate is the 2-8%(weight of total composition).
CN89108258A 1988-10-29 1989-10-27 Pre-coating composition for luminescent screen of cathode ray tube Expired - Fee Related CN1028578C (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR1019880014180A KR910007797B1 (en) 1988-10-29 1988-10-29 Base material for forming fluorescent film
KR14180/88 1988-10-29

Publications (2)

Publication Number Publication Date
CN1042447A CN1042447A (en) 1990-05-23
CN1028578C true CN1028578C (en) 1995-05-24

Family

ID=19278881

Family Applications (1)

Application Number Title Priority Date Filing Date
CN89108258A Expired - Fee Related CN1028578C (en) 1988-10-29 1989-10-27 Pre-coating composition for luminescent screen of cathode ray tube

Country Status (3)

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KR (1) KR910007797B1 (en)
CN (1) CN1028578C (en)
GB (1) GB2224281B (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2023191681A1 (en) * 2022-03-28 2023-10-05 Gradientech Ab Adherence enhancing coating for plastic surfaces

Family Cites Families (2)

* Cited by examiner, † Cited by third party
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

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
GB8924258D0 (en) 1989-12-13
KR910007797B1 (en) 1991-10-02

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C06 Publication
PB01 Publication
C10 Entry into substantive examination
SE01 Entry into force of request for substantive examination
C14 Grant of patent or utility model
GR01 Patent grant
C15 Extension of patent right duration from 15 to 20 years for appl. with date before 31.12.1992 and still valid on 11.12.2001 (patent law change 1993)
OR01 Other related matters
C19 Lapse of patent right due to non-payment of the annual fee
CF01 Termination of patent right due to non-payment of annual fee