KR920007419B1 - Method of fluorescent screen for crt - Google Patents
Method of fluorescent screen for crt Download PDFInfo
- Publication number
- KR920007419B1 KR920007419B1 KR1019900010310A KR900010310A KR920007419B1 KR 920007419 B1 KR920007419 B1 KR 920007419B1 KR 1019900010310 A KR1019900010310 A KR 1019900010310A KR 900010310 A KR900010310 A KR 900010310A KR 920007419 B1 KR920007419 B1 KR 920007419B1
- Authority
- KR
- South Korea
- Prior art keywords
- fluorescent film
- cathode ray
- film
- fluorescent
- ray tube
- Prior art date
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
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Formation Of Various Coating Films On Cathode Ray Tubes And Lamps (AREA)
- Luminescent Compositions (AREA)
Abstract
Description
본 발명은 칼라 음극선관용 형광막 및 이의 제조방법에 관한 것으로서, 상세하게는 음극선관 패널내면에 광경화형 감광성막을 형성하고 사진제판법으로 적색, 녹색, 청색 형광체 돗트 또는 스트라이프상을 형성하는 칼라 음극선관용 형광막 및 이의 제조방법에 관한 것이다.BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fluorescent film for color cathode ray tubes and a method of manufacturing the same. Specifically, a photocurable photosensitive film is formed on an inner surface of a cathode ray tube panel and a red, green or blue phosphor dot or stripe is formed by photolithography. Membrane and its preparation method.
일반적으로 칼라 음극선관의 현광면은 유리 패널의 내면에 적색, 녹색, 청색의 각 색으로 발광하는 형광체 돗트 또는 스트라이프상으로 배열되어 이들 형광체 배열 간극부에는 흑연과 같은 광흡수물질의 막이 피착 형성된 구조를 가지고 있다. 이러한 구조를 가진 형광막은 사진제판법에 의해 형성된다.In general, the surface of the color cathode ray tube is arranged on the inner surface of the glass panel in the form of phosphor dots or stripes emitting red, green, and blue colors, and a film of light absorbing material such as graphite is deposited on the phosphor array gaps. Have A fluorescent film having such a structure is formed by a photolithography method.
즉, 먼저 감광제로 중크롬산염을 함유하는 폴리비닐알코올(유기바인더)용액에 형광체를 현탁시킨 소위 현광체 슬러리를 패널내면에 도포, 건조해서 감광성 수지막으로 한 후, 새도우 마스크를 개재해서 노광하고 형광체도포 소망부위의 감광성 수지막을 경화시킨 후, 온수 스프레이등에 의한 현상공정으로 감광성수지막의 미노광부분을 제거하고, 감광성수지막의 형광체 도포부분에 대응하는 노광부분만을 잔류시켜 얻는다.That is, first, a so-called photoconductor slurry in which a phosphor is suspended in a polyvinyl alcohol (organic binder) solution containing a dichromate as a photosensitive agent is applied to the inner surface of the panel, dried to form a photosensitive resin film, and exposed through a shadow mask to expose the phosphor. After hardening the photosensitive resin film of a desired part to apply | coated, the unexposed part of the photosensitive resin film is removed by the image development process by a hot water spray etc., and only the exposure part corresponding to the fluorescent substance coating part of the photosensitive resin film is obtained.
이와 같이 감광제로는 크롬화합물이 사용되고, 유기 바인더로는 폴리비닐알코올이 사용되고 있으나, 종래의 방법으로 형광막을 제조할 경우, 형광막 구멍뚫림으로 인한 형광막을 제조할 경우, 형광막 구멍뚫림으로 인한 형광체 충진밀도가 충분히 높지않아 형광면의 발광 휘도가 충분하지 못한 문제가 있다.In this way, a chromium compound is used as the photosensitizer and polyvinyl alcohol is used as the organic binder. However, when the fluorescent film is manufactured by a conventional method, when the fluorescent film is manufactured by the hole of the fluorescent film, the phosphor due to the hole of the fluorescent film is produced. There is a problem that the filling density is not high enough and the light emission luminance of the fluorescent surface is not sufficient.
본 발명의 목적은 상기 문제를 감안하여 형광체 슬러리를 개량함으로써 형광체의 충진밀도를 높여 형광막의 구멍뚫림을 방지하고 형광면을 평활하게 하는 개량된 감광성 조성물과 이를 사용한 형광막 형성방법을 제공하는 것이다.SUMMARY OF THE INVENTION In view of the above problems, an object of the present invention is to provide an improved photosensitive composition and a method of forming a fluorescent film using the same, by improving the phosphor slurry to increase the filling density of the phosphor to prevent puncture of the fluorescent film and to smooth the fluorescent surface.
상기 목적을 달성하기 위하여 본 발명의 칼라 음극선관용 형광막은 중크롬산염을 감광성 성분으로서 함유하여된 칼라 음극선관용 형광막에 있어서, 상기 형광막에 실리게이트성분인 에틸실리케이트를 첨가하여 이루어진 점에 특징이 있다.In order to achieve the above object, the fluorescent film for color cathode ray tubes of the present invention is characterized in that the fluorescent film for color cathode ray tubes containing dichromate as a photosensitive component is formed by adding ethyl silicate as a silicide component to the fluorescent film. .
또한 본 발명의 형광막 형성방법은 음극선관 패널 내면에 중크롬산염을 감광성 성분으로서 함유하여 된 형광막을 형성하고 광 경화성 수지막부분을 노광한 후 현상하여 이루어진 칼라 음극선관용 형성방법에 있어서, 상기 형광막에 에틸실리케이트 0.03 내지 1.5중량%를 첨가하여 얻어진 형광막을 형성하는 점에 특징이 있다.The fluorescent film forming method of the present invention is a method for forming a color cathode ray tube formed by forming a fluorescent film containing dichromate as a photosensitive component on an inner surface of a cathode ray tube panel, exposing a photocurable resin film portion, and developing the same. It is characterized in that a fluorescent film obtained by adding 0.03 to 1.5% by weight of ethyl silicate is formed.
상기 감광성 조성물의 구성 성분은 폴리비닐알코올, 형광체분말(입경이 8 내지 10μm), 계면활성제, 중크롬산 나트륨 및 5% 에틸실케이트 용액등이다.Constituents of the photosensitive composition include polyvinyl alcohol, phosphor powder (particle size of 8 to 10 µm), surfactant, sodium dichromate and 5% ethyl silicate solution.
상기 구성 성분중 폴리비닐알코올양은 감광성 조성물 100중량%를 기준하여 50 내지 55중량%, 계면활성제의 양은 2.3 내지 2.8중량%이고, 중크롬산나트륨의 양은 3.3 내지 3.9중량%이고 5% 에틸실리케이트 용액은 0.03 내지 1.5중량%이다. 상기 계면활성제로는 산화 프로필렌과 산화 에틸렌(PES)을 사용하였다.The amount of polyvinyl alcohol in the components is 50 to 55% by weight based on 100% by weight of the photosensitive composition, the amount of surfactant is 2.3 to 2.8% by weight, the amount of sodium dichromate is 3.3 to 3.9% by weight and 5% ethyl silicate solution is 0.03 To 1.5% by weight. Propylene oxide and ethylene oxide (PES) were used as the surfactant.
상기에서 사용된 에틸실리케이트 함량이 증가할수록 형광체의 충진밀도는 증가하지만 일정량 이상 첨가하게 되면 형광막 제조시 형광막 접착력이 저하되기 시작하고 형광막 스트라이프의 폭이 좁아지므로 스트라이프 이탈 현상이 발생하게 되어 에틸실리케이트의 양은 감광성 조성물 100중량%를 기준하여 0.03 내지 1.5중량%가 바람직하다.Filling density of the phosphor increases as the content of ethyl silicate used above increases, but when a certain amount is added, the adhesion of the fluorescent film begins to decrease and the width of the fluorescent stripe becomes narrower. The amount of silicate is preferably 0.03 to 1.5% by weight based on 100% by weight of the photosensitive composition.
이하 본 발명의 제조 방법을 설명하면 다음과 같다.Hereinafter, the manufacturing method of the present invention will be described.
먼저 적색발광 형광체로 Y2O2S : Eu를 준비하고, 녹색발광 형광체로 ZnS : Cu, Al과, ZnS : Cu, Au, Al를 준비하고, 청색발광 형광체로 ZnS : Ag, Cl를 준비하였다.First, Y 2 O 2 S: Eu was prepared as a red light-emitting phosphor, and ZnS: Cu, Al, ZnS: Cu, Au, and Al were prepared as a green light-emitting phosphor, and ZnS: Ag, Cl was prepared as a blue light-emitting phosphor. .
이들 형광체는 8 내지 10μm정도의 입경크기를 갖는 분말로 되어 있으며, 여기에 폴리비닐알코올과 중크롬산 나트륨을 첨가하고 계면활성제로 산화 프로필렌과 산화 에틸렌을 사용하여 슬러리액을 얻었다. 형광막 충진 밀도를 증가시키기 위해 에틸실리케이트를 물에 가용성 용액으로 제조하여 슬러리액과 조합하여 충분히 혼합하였다.These phosphors were powders having a particle size of about 8 to 10 µm, and polyvinyl alcohol and sodium dichromate were added thereto, and a slurry solution was obtained using propylene oxide and ethylene oxide as surfactants. To increase the fluorescent film packing density, ethyl silicate was prepared as a soluble solution in water and mixed well with the slurry solution.
그 후 얻어진 슬러리액을 유리 패널내면에, 적색, 녹색, 청색을 순차적으로 도포하고 건조하여 감광성 피막을 얻은 후 노광하고 현상하여 형광막을 얻었다.Then, the obtained slurry liquid was apply | coated red, green, and blue sequentially to the glass panel inner surface, and it dried and obtained the photosensitive film, and then exposed and developed and obtained the fluorescent film.
이때 상기 유리 패널표면의 온도는 38 내지 42℃이었다.At this time, the temperature of the glass panel surface was 38 to 42 ℃.
이하 본 발명의 바람직한 실시예를 설명하면 다음과 같다.Hereinafter, the preferred embodiment of the present invention will be described.
[실시예 1]Example 1
폴리비닐 알코올 : 130gPolyvinyl Alcohol: 130 g
ZnS : Cu, Al 형광체 분말 : 110gZnS: Cu, Al phosphor powder: 110g
산화 프로필렌과 산화 에틸렌 : 3.4gPropylene Oxide And Ethylene Oxide: 3.4g
중크롬산 나트륨 : 5gSodium Dichromate: 5g
5% 에틸 실리케이트 용액 : 1ml5% ethyl silicate solution: 1ml
상기 준비된 원료를 혼합하여 얻어진 형광체 슬러리 용액을 유리패널 표면에 통상의 회전도포법으로 도포하여 형광막을 형성하였다.The phosphor slurry solution obtained by mixing the prepared raw materials was applied to the surface of the glass panel by a conventional rotary coating method to form a fluorescent film.
[실시예 2 내지 4][Examples 2 to 4]
실시예 1과 동일한 방법으로 수행하되, 5% 에틸 실리케이트 용액의 양을 각각 10ml, 20ml, 30ml로 하여 형광막을 형성하였다.In the same manner as in Example 1, except that the amount of 5% ethyl silicate solution was 10ml, 20ml, 30ml respectively to form a fluorescent film.
[실시예 5 내지 8][Examples 5 to 8]
실시예 1과 동일한 방법으로 수행하되, 녹색발광 형광체 ZnS : Cu, Au, Al을 사용하고 각각 5% 에틸 실리케이트 용액 1ml, 10ml, 20ml 및 30ml를 첨가하여 형광막을 형성하였다.The same procedure as in Example 1 was performed, except that green phosphors ZnS: Cu, Au, and Al were used, and 1 ml, 10 ml, 20 ml, and 30 ml of 5% ethyl silicate solutions were added to form a fluorescent film.
[실시예 9 내지 12][Examples 9 to 12]
실시예 1과 동일한 방법으로 수행하되, 적색발광 형광체 Y2O2S : Eu를 사용하고 각각 5% 에틸실리케이트 용액 1ml, 10ml, 20ml 및 30ml를 첨가하여 형광막을 형성하였다.The fluorescent film was formed by the same method as Example 1 except using red light-emitting phosphor Y 2 O 2 S: Eu and adding 1 ml, 10 ml, 20 ml and 30 ml of 5% ethyl silicate solution, respectively.
[실시예 13 내지 16][Examples 13 to 16]
실시예 1과 동일한 방법으로 수행하되, 청색발광 형광체 ZnS : Ag, Cl을 사용하고 각각 5% 에틸실리케이트 용액 1ml, 10ml, 20ml 및 30ml를 첨가하여 형광막을 형성하였다.A fluorescent film was formed by the same method as Example 1 except using blue light emitting phosphors ZnS: Ag, Cl and adding 1 ml, 10 ml, 20 ml and 30 ml of 5% ethyl silicate solution, respectively.
이와 같이 하여 얻어진 본 발명의 형광막은 종래 형광체의 충진 밀도가 27ρ(%)인 반면에 37 내지 40ρ(%)인 것으로 매우 우수하였다. 또한 형광막의 발광휘도도 5 내지 13%정도 증가된 것으로 나타났다.The fluorescent film of the present invention obtained as described above was very excellent in that the packing density of the conventional phosphor was 27 ρ (%) while it was 37 to 40 ρ (%). In addition, the emission luminance of the fluorescent film was also increased by about 5 to 13%.
이상에서 설명한 바와 같이, 본 발명에 의하면 감광성 조성물에 실리케이트 성분을 첨가함으로써 형광체의 충진 밀도를 종래보다 약 13ρ(%)까지 향상시켰고 동시에 평활한 형광면을 얻을 수 있었다.As described above, according to the present invention, by adding the silicate component to the photosensitive composition, the filling density of the phosphor was improved to about 13 ρ (%) than before, and at the same time, a smooth fluorescent surface was obtained.
따라서, 본 발명의 감광성 조성물로 형성된 형광막은 충진밀도를 향상시킴으로써 구멍뚫림을 방지할 수 있었고 동시에 평활한 형광면을 얻을 수 있었다.Therefore, the fluorescent film formed of the photosensitive composition of the present invention was able to prevent puncture by improving the filling density and at the same time to obtain a smooth fluorescent surface.
더욱이, 형광면 전체의 발광휘도를 평균 19%이상 향상시킬 수 있었다.In addition, the luminance of the entire fluorescent surface could be improved by 19% or more on average.
Claims (3)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1019900010310A KR920007419B1 (en) | 1990-07-07 | 1990-07-07 | Method of fluorescent screen for crt |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1019900010310A KR920007419B1 (en) | 1990-07-07 | 1990-07-07 | Method of fluorescent screen for crt |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| KR920003371A KR920003371A (en) | 1992-02-29 |
| KR920007419B1 true KR920007419B1 (en) | 1992-08-31 |
Family
ID=19301022
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| KR1019900010310A KR920007419B1 (en) | 1990-07-07 | 1990-07-07 | Method of fluorescent screen for crt |
Country Status (1)
| Country | Link |
|---|---|
| KR (1) | KR920007419B1 (en) |
-
1990
- 1990-07-07 KR KR1019900010310A patent/KR920007419B1/en not_active IP Right Cessation
Also Published As
| Publication number | Publication date |
|---|---|
| KR920003371A (en) | 1992-02-29 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| KR100189805B1 (en) | Slurry composition for color braun tube | |
| KR920007419B1 (en) | Method of fluorescent screen for crt | |
| US3989977A (en) | Color picture tube | |
| JP2637130B2 (en) | Method of forming fluorescent screen of color picture tube | |
| EP0739027B1 (en) | Fluorescent film structure of color Braun tube | |
| US5372903A (en) | Method of forming a phosphor layer on CRT panel and a water soluble emulsion with photosensitivity for an intermediate layer | |
| US4425528A (en) | Color picture tubes and method of manufacturing the same | |
| KR930007125B1 (en) | Method of making a fluorescent of color braun tube | |
| KR930009172B1 (en) | Method of making a fluorescent screen for color crt | |
| KR950004938B1 (en) | Fabrication method of color cathod ray tube shadow mask | |
| KR930007462B1 (en) | Method of making a fluoresent screen of color braun tube | |
| JPH08106859A (en) | Color cathode-ray tube | |
| JPH07179711A (en) | Pigment dispersion composition, display having fluorescent membrane equipped with a filter and its production | |
| KR0183631B1 (en) | Bright cathode ray tube | |
| KR100238759B1 (en) | Color cathode ray tube | |
| KR940007564B1 (en) | Red-fluorescence compositions | |
| KR100277988B1 (en) | Screen formation method of color cathode ray tube. | |
| KR100244950B1 (en) | Composition and manufacturing method of a fluorescent slurry | |
| JPH0143980B2 (en) | ||
| JPS61296647A (en) | Index type color picture tube and its manufacture | |
| KR100300307B1 (en) | Method for manufacturing fluorescent surface of color cathode ray tube | |
| JPS6031060B2 (en) | Method for manufacturing color picture tube fluorescent surface | |
| JPS6160534B2 (en) | ||
| KR19980060831A (en) | Phosphor composition for cathode ray tube, method for preparing phosphor for cathode ray tube using same and phosphor for cathode ray tube manufactured according to the method | |
| JPS5981832A (en) | Pattern forming method |
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: 20080728 Year of fee payment: 17 |
|
| LAPS | Lapse due to unpaid annual fee |