KR940008548B1 - Filming liquid composition of crt - Google Patents
Filming liquid composition of crt Download PDFInfo
- Publication number
- KR940008548B1 KR940008548B1 KR1019910020701A KR910020701A KR940008548B1 KR 940008548 B1 KR940008548 B1 KR 940008548B1 KR 1019910020701 A KR1019910020701 A KR 1019910020701A KR 910020701 A KR910020701 A KR 910020701A KR 940008548 B1 KR940008548 B1 KR 940008548B1
- Authority
- KR
- South Korea
- Prior art keywords
- film
- filming
- fluorescent
- liquid composition
- aluminum
- Prior art date
Links
Landscapes
- Cathode-Ray Tubes And Fluorescent Screens For Display (AREA)
- Formation Of Various Coating Films On Cathode Ray Tubes And Lamps (AREA)
Abstract
Description
제1도(a)는 본 발명에 따라 형성된 필르밍막의 중앙부(좌)와 주변부(우)의 사진이고 (b)는 종래 방법에 따라 형성된 필르밍막의 중앙부(좌)와 주변부(우)의 사진.Figure 1 (a) is a photograph of the central portion (left) and the peripheral portion (right) of the filming film formed according to the present invention (b) is a photograph of the central portion (left) and peripheral portion (right) of the filming film formed according to the conventional method .
본 발명은 음극선관 스크린막의 형성에 사용되는 필르밍액 조성물에 관한 것으로, 상세하게는 필르밍액의 조성을 개선하여 알루미늄 증착막의 평활도를 향상시키고 반사효율을 증가시킴으로써 형광막의 발광휘도를 향상시킨 필르밍액 조성물에 관한 것이다.The present invention relates to a peeling liquid composition used to form a cathode ray tube screen film, and more particularly, to a peeling liquid composition which improves the light emitting luminance of a fluorescent film by improving the composition of the peeling liquid to improve the smoothness of the aluminum deposited film and to increase the reflection efficiency. It is about.
음극선관 패널내면에 스크린막을 형성하는 공정은, 블랙 매트릭스 형성 공정→하도액 도포 공정→형광막형성공정→필르밍액 도포 공정→알루미늄 진공 증착 공정으로 이루어진다.The process of forming the screen film on the inner surface of the cathode ray tube panel consists of a black matrix forming step → coating solution coating step → fluorescence film forming step → filming solution coating step → aluminum vacuum deposition step.
상기의 형광막 형성 공정과 필르밍액 도포공정을 상세히 설명한다.The above-described fluorescent film forming step and the filming solution coating step will be described in detail.
음극선과 패널 내면에 적색, 녹색, 청색의 형광 스트라이프(또는 도트)를 형성하는 공정은 각 색상의 형광체 슬러리 주입→확포→노광→현상의 순서로 반복 시행되며, 최종 색상의 형광 스트라이프(도트)가 형성된 후에는 건조 공정을 거쳐 형광막이 완성된다.The process of forming red, green, and blue fluorescent stripes (or dots) on the cathode ray and the inner surface of the panel is repeated in the order of injecting phosphor slurry of each color → expanding → exposure → developing. After formation, a fluorescent film is completed through a drying process.
이렇게 형성된 형광막은 스트라이프(또는 도트) 내의 형광체 구멍 뚫림으로 인하여 편평한 면을 만들지 못하는데, 여기에 직접 알루미늄을 증착시키게 되면 알루미늄이 형광체를 뚫고 들어가 알루미늄 증착막에 요철이 형성되어 거울면 반사 효과가 저하된다. 이러한 현상을 방지하기 위해 형광체 사이의 구멍을 막아주는 물질을 형광막 위에 도포하게 되는데 이것을 필르밍(filming)이라고 한다. 필르밍액을 도포함으로써 형광체 구멍 뚫림으로 인한 알루미늄 증착막의 요철현상을 완화하여 증착면을 평활하게 하고, 형광막과 알루미늄 증착막을 일정한 간격으로 분리시킴으로써 알루미늄 증착막의 거울면 반사 효과를 높일 수 있게 된다.The formed fluorescent film does not make a flat surface due to the perforation of phosphors in the stripe (or dots). If aluminum is directly deposited thereon, aluminum penetrates the phosphor to form concavities and convexities in the aluminum deposition film, thereby reducing the mirror surface reflection effect. In order to prevent this phenomenon, a material that blocks pores between the phosphors is coated on the phosphor layer, which is called filming. By applying the peeling liquid, the uneven phenomenon of the aluminum deposition film due to the phosphor hole boring is alleviated to smooth the deposition surface, and the fluorescent film and the aluminum deposition film are separated at regular intervals, thereby increasing the mirror surface reflection effect of the aluminum deposition film.
필르밍액의 조성은 주성분인 아크릴 중합체의 에멀젼과, 에멀젼 입자 사이의 구멍을 메워주고 형광막과 필르밍막을 연결시켜 주는 역할을 하는 폴리비닐 알콜(polyvinyl alcohol : PVA)외에 용제, 증점제 등을 포함한다.The composition of the filming solution includes an emulsion of an acrylic polymer as a main component, and a solvent, a thickener, etc., in addition to polyvinyl alcohol (PVA), which fills the pores between the emulsion particles and connects the fluorescent film and the film. .
종래에는 PVA의 중합도가 1500 내지 2000 정도의 비교적 높은 것을 사용하여 왔는데, 필르밍막 자체의 요철이 심하기 때문에 알루미늄 증착막까지도 오히려 요철이 증가하여 반사 효율이 떨어지고 이에 따라 형광막의 발광휘도가 전하되는 문제점이 있다.Conventionally, the polymerization degree of PVA has been used, which is relatively high, about 1500 to 2000. Since the unevenness of the filming film itself is severe, the unevenness of the aluminum deposited film is rather increased, so that the reflection efficiency is lowered and thus the luminance of the fluorescent film is charged. .
본 발명의 목적은 필르밍막 자체의 요철을 방지하여 평활도을 개선시켜서, 알루미늄 증착막의 평활도를 향상시키고 반사 효율을 높임으로써 형광막의 발광휘도를 향상시키는데 있다.An object of the present invention is to improve the luminance of the fluorescent film by improving the smoothness of the aluminum film by improving the smoothness by preventing the unevenness of the film film itself.
상기의 목적을 달성하기 위하여 본 발명에서는 아크릴 중합체, 폴리비닐 알콜, 용제를 주요 구성 성분으로 하는 필르밍액에 있어서, 상기 폴리비닐 알콜이 중합도 500 내지 1000의 폴리비닐 알콜인 것을 특징으로 하는 필르밍액 조성물을 제공한다.In order to achieve the above object, in the present invention, in the film solution containing acrylic polymer, polyvinyl alcohol, and a solvent as the main constituents, the film solution comprises a polyvinyl alcohol having a polymerization degree of 500 to 1000. To provide.
즉, 필르밍액의 조성물로서 종래에 사용하던 중합도 1500 내지 2000의 PVA 대신 중합도 500 내지 1000의 PVA를 사용하여 필르밍막을 형성함으로써 필르밍막의 요철이 줄어들고 평활도를 개선시킬 수 있었다. 따라서 필르밍막 위에 형성되는 알루미늄 증착막의 평활도도 향상되고 반사 효율이 높아지므로 형광막의 발광휘도가 향상되었다.That is, by forming the film of film using PVA having a degree of polymerization of 500 to 1000 instead of PVA of the degree of polymerization of 1500 to 2000, which was conventionally used as the composition of the film, the unevenness of the film was reduced and smoothness was improved. Therefore, the smoothness of the aluminum deposition film formed on the film is also improved and the reflection efficiency is increased, thereby improving the luminous luminance of the fluorescent film.
이하 실시예를 통하여 본 발명을 상세히 설명한다. 단, 본 발명이 하기의 실시예로 제한되는 것은 아니다.Hereinafter, the present invention will be described in detail through examples. However, the present invention is not limited to the following examples.
[실시예 1]Example 1
아크릴 에멀젼 1kg1kg acrylic emulsion
(B-74 : 롬앤드 하드사 제품)(B-74: product made by ROM & HARD)
중합도 500의 PVA 8% 0.8kgPVA 8% 0.8kg of polymerization degree 500
순수 1.5kgPure 1.5kg
10% 옥살산 수용액 0.1kg0.1 kg of 10% aqueous oxalic acid solution
중점제 적량Medium weight appropriate amount
아크릴 에멀션을 순수에 혼합하여 교반하면서 유기 발포제인 옥살산 수용액을 서서히 첨가한다. 충분히 교반한 후 알칼리 용액으로 pH를 6∼8로 조절하고 나서 중합도 500의 PVA를 서서히 첨가한다. 필요에 따라 증점제를 사용하여 최종 필르밍액의 점도를 5∼10CPS, PH를 6∼8로 조절하고 400메쉬로 여과한다.Aqueous oxalic acid aqueous solution, which is an organic blowing agent, is gradually added while the acrylic emulsion is mixed with pure water and stirred. After sufficient stirring, the pH was adjusted to 6 to 8 with an alkaline solution, and then PVA having a polymerization degree of 500 was slowly added. If necessary, a thickening agent is used to adjust the viscosity of the final film solution to 5 to 10 CPS and PH to 6 to 8, followed by filtration at 400 mesh.
상기와 같이 조제한 필르밍액을 일반적인 회전 도포법으로 형광막 위에 도포한 후 알루미늄 증착막을 도포하여 음극선관의 스크린막을 형성한다.The filming solution prepared as described above is coated on a fluorescent film by a general rotary coating method, and then an aluminum deposition film is applied to form a screen film of a cathode ray tube.
[실시예 2]Example 2
아크릴 에멀젼 1kg1kg acrylic emulsion
(B-74 : 롬앤드 하드사 제품)(B-74: product made by ROM & HARD)
중합도 1500의 PVA 8% 0.8kgPolymerization degree 1500, PVA 8% 0.8kg
순수 1.5kgPure 1.5kg
10% 옥살산 수용액 0.1kg0.1 kg of 10% aqueous oxalic acid solution
중점제 적량Medium weight appropriate amount
상기 원료를 가지고 실시예 1과 동일하게 시행한다.It carried out similarly to Example 1 with the said raw material.
제1도(a)는 본 발명의 실시예 1에 따라 형성된 필르밍막의 중앙부(좌)와 주변부(우)의 사진이고, (b)는 종래의 필르밍액에 의해 형성된 필르밍막의 중앙부(좌)와 주변부(우)의 사진이다. 제1도에서 보면 본 발명의 필르밍액에 의해 형성된 필르밍막은 종래의 것과 비교할 때 요철이 없고 표면이 거의 평활한 것을 알 수 있다.FIG. 1 (a) is a photograph of the central portion (left) and the peripheral portion (right) of the filming film formed according to Example 1 of the present invention, and (b) is the center portion (left) of the filming film formed by the conventional filming solution. And a picture of the periphery (right). From Fig. 1, it can be seen that the film formed by the filming solution of the present invention has no unevenness and a nearly smooth surface as compared with the conventional one.
다음의 표 1은 본 발명과 종래의 필르밍액에 의한 형광막의 발광휘도를 나타낸 것이다.Table 1 below shows the light emission luminance of the fluorescent film according to the present invention and a conventional filming solution.
[표 1]TABLE 1
표 1에서 알 수 있듯이, 본 발명에 의한 필르밍액 조성물을 사용하여 형성된 형광막의 발광휘도가 종래의 것에 비하여 약 9 내지 12% 향상되었다.As can be seen from Table 1, the emission luminance of the fluorescent film formed using the peeling liquid composition according to the present invention was improved by about 9 to 12% compared with the conventional one.
이상에서 살펴본 바와 같이, 필르밍액 조성물에 있어서 종래 사용되어온 중합도 1500 내지 2000의 PVA를 중합도 500 내지 1000의 PVA로 대체함으로써, 필르밍막의 요철을 완화하고 평활도를 개선시켜서 필르밍막 위에 형성되는 알루미늄 증착막의 평활도를 향상시키는 동시에 반사효율을 높여 결과적으로 형광막의 발광휘도를 9 내지 12%까지 향상시킬 수 있었다.As described above, by replacing the PVA having a polymerization degree of 1500 to 2000 with PVA having a polymerization degree of 500 to 1000 in the filming solution composition, the unevenness of the film and the smoothness are improved to improve the smoothness of the aluminum deposited film formed on the film. In addition to improving the smoothness, the reflection efficiency was increased, and as a result, the emission luminance of the fluorescent film was improved by 9 to 12%.
Claims (1)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1019910020701A KR940008548B1 (en) | 1991-11-20 | 1991-11-20 | Filming liquid composition of crt |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1019910020701A KR940008548B1 (en) | 1991-11-20 | 1991-11-20 | Filming liquid composition of crt |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| KR940008548B1 true KR940008548B1 (en) | 1994-09-24 |
Family
ID=19323139
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| KR1019910020701A KR940008548B1 (en) | 1991-11-20 | 1991-11-20 | Filming liquid composition of crt |
Country Status (1)
| Country | Link |
|---|---|
| KR (1) | KR940008548B1 (en) |
-
1991
- 1991-11-20 KR KR1019910020701A patent/KR940008548B1/en not_active IP Right Cessation
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| KR940008548B1 (en) | Filming liquid composition of crt | |
| US5322707A (en) | Method of forming a fluorescent screen | |
| KR930009172B1 (en) | Method of making a fluorescent screen for color crt | |
| JP3436338B2 (en) | Method of manufacturing metallized luminescent screen for cathode ray tube | |
| KR100445026B1 (en) | Cathode ray tube screen film using green filter film capable of improving luminance of screen film and preventing degradation of contrast even in case where glass panel with high transmissivity is employed | |
| JPS5973830A (en) | Crt for display | |
| KR950004938B1 (en) | Fabrication method of color cathod ray tube shadow mask | |
| KR100236351B1 (en) | Fluorescent film for color cathode ray tube | |
| KR930008615B1 (en) | Manufacture of screen on applying luminescent coatings | |
| KR100216634B1 (en) | Filming liquid material for color crt | |
| KR19990085098A (en) | Prewet liquid composition of color cathode ray tube | |
| JPH0652807A (en) | Color cathode ray tube | |
| KR100300307B1 (en) | Method for manufacturing fluorescent surface of color cathode ray tube | |
| KR100189806B1 (en) | Filming water composition for color braun tube | |
| JPH08293251A (en) | Preparation of fluorescent film of color cathode-ray tube | |
| JP3090700B2 (en) | Method for forming phosphor screen of color picture tube | |
| KR930003382B1 (en) | Composion of film former | |
| KR100428969B1 (en) | Cathode ray tube screen film adopting black filter film formed on glass panel | |
| KR930007125B1 (en) | Method of making a fluorescent of color braun tube | |
| KR100189421B1 (en) | Method of making dag solution used in the panel | |
| JPS636728A (en) | Phosphor screen of color cathode-ray tube | |
| JPS63164144A (en) | Fluorescent screen of color cathode-ray tube | |
| JPS61148749A (en) | Cathode-ray tube for color display | |
| JPS63307645A (en) | Color cathode-ray tube | |
| KR20050006705A (en) | A Colar-CRT |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A201 | Request for examination | ||
| E902 | Notification of reason for refusal | ||
| 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: 20000831 Year of fee payment: 7 |
|
| LAPS | Lapse due to unpaid annual fee |