KR0177945B1 - Filter for compensating of amount of light in color cathode ray tube - Google Patents
Filter for compensating of amount of light in color cathode ray tube Download PDFInfo
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- KR0177945B1 KR0177945B1 KR1019950049338A KR19950049338A KR0177945B1 KR 0177945 B1 KR0177945 B1 KR 0177945B1 KR 1019950049338 A KR1019950049338 A KR 1019950049338A KR 19950049338 A KR19950049338 A KR 19950049338A KR 0177945 B1 KR0177945 B1 KR 0177945B1
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- 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
- H01J9/2272—Devices for carrying out the processes, e.g. light houses
- H01J9/2273—Auxiliary lenses and filters
-
- 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
- H01J2209/015—Machines therefor
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- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Formation Of Various Coating Films On Cathode Ray Tubes And Lamps (AREA)
Abstract
본 발명은 칼라수상관의 광량보정용 필터에 관한 것으로 특히 필터무늬얼룩은 필터무늬의 피치가 클수록 커지고 회절무늬얼룩은 피치가 작을수록 강해지는데 이를 최소화하기 위해 적합한 피치를 갖도록 필터를 구성한 것으로서, 무늬의 피치를 0.15mm∼0.75mm 사이에 둠으로서 필터의 피치로 인해 생기는 화면상의 필터무늬얼룩과 회절무늬얼룩을 회소화하고 양질의 화면품질을 얻도록 한 것이다.The present invention relates to a filter for adjusting the amount of light of a color water pipe, and in particular, a filter patterned stain becomes larger as the pitch of the filter pattern becomes larger, and a diffraction patterned stain becomes stronger as the pitch is smaller, so that the filter is configured to have a suitable pitch to minimize this. By placing the pitch between 0.15mm and 0.75mm, the filter pattern stains and diffraction pattern stains caused by the pitch of the filter are reduced to obtain high quality screen quality.
Description
제1도는 일반적인 칼라수상관 노광장치의 구성도.1 is a block diagram of a general color image tube exposure apparatus.
제2도는 사진건판법에 의해 제작되는 필터의 구성도.2 is a block diagram of a filter produced by the photographic plate method.
제3도는 필터무늬의 피치가 과다하게 큰 경우로서, (a)는 조도분포 상태도. (b)는 얼룩 발생 상태도.3 is a case where the pitch of the filter pattern is excessively large, and (a) is a roughness distribution state diagram. (b) is a state of stain generation.
제4도는 필터무늬의 피치가 너무 작은 경우로서, (a)는 간섭 및 회절에 의한 회절무늬 발생도. (b)는 얼룩 발생 상태도.4 is a case where the pitch of the filter pattern is too small, and (a) is a diffraction pattern generation degree due to interference and diffraction. (b) is a state of stain generation.
제5도는 필터의 피치변화에 따른 얼룩 증감도.5 is a stain sensitization according to the pitch change of the filter.
* 도면의 주요부분에 대한 부호의 설명* Explanation of symbols for main parts of the drawings
4 : 필터 5 : 광원4: filter 5: light source
6 : 광선 7 : 투과대6 beam 7 transmission band
8 : 비투과대 9 : 피치8: non-transparent zone 9: pitch
10 : 슬릿폭 11 : 화면10: slit width 11: screen
본 발명은 칼라수상관의 광량보정용 필터에 관한 것으로 특히 판넬내면에 블랙매트릭스와 형광체를 피막하기위해 사용되는 광량보정용 필터, 즉 전면에 투과대와 비투과대로 구성된 필터에 대해서 필터무늬의 피치를 조절함으로서 화면에 필터에 의한 얼룩을 개선할수 있도록 한 것이다.The present invention relates to a light correction filter of a color water pipe, and in particular, to adjust a pitch of a filter pattern for a light correction filter used to coat a black matrix and a phosphor on an inner surface of a panel, i. By doing so, it is possible to improve stains caused by filters on the screen.
종래 칼라수상관은 적, 녹, 청의 삼색이 형광체를 도트형 또는 선형으로 판넬의 내면에 형성하여 전자총에서 발사되어 편향요크에 의해 편향되어 판넬의 내면에 장착된 섀도우마스크의 구멍을 통과한 전자빔에 의해 타격되어 빛을 발생시킴으로서 구동한다.Conventional color water tubes have red, green, and blue colors formed on the inner surface of the panel in the form of a dot or a linear phosphor and are emitted from an electron gun and deflected by a deflection yoke to pass through the hole of the shadow mask mounted on the inner surface of the panel. It is driven by generating light by striking by it.
그러한 판넬 내면에 형성되는 블랙매트릭스와 형광체는 사진건판법으로 제작되는데 사진건판법중 노광공정은 제1도에서와 같이 광원(5)에서 출발한 광선(6)이 통과되도록 임의의 투과율로 제작된 필터(4)와, 상기 필터(4)의 위치에 상응하는 투과율만큼 빛의 양은 조절이 되어 섀도우마스크(3)를 통과하여 판넬(1)의 내면에 피막된 감광제(2)에 조사되도록 구성되었다.The black matrix and the phosphor formed on the inner surface of the panel are manufactured by a photolithography method. The exposure process of the photolithography method is made at an arbitrary transmittance such that the light beam 6 starting from the light source 5 passes as shown in FIG. The amount of light is controlled by the filter 4 and the transmittance corresponding to the position of the filter 4 so as to pass through the shadow mask 3 and irradiate the photosensitive agent 2 coated on the inner surface of the panel 1. .
이때 판넬(1) 내면에 조사된 빛의 양이 블랙매트릭스와 형광체의 크기를 결정하게 되며 빛의 양은 필터(4)에 의해서 조정된다.At this time, the amount of light irradiated on the inner surface of the panel 1 determines the size of the black matrix and the phosphor, and the amount of light is adjusted by the filter 4.
필터(4)는 사진건판법에 의해 제작되어지며, 제2도에 그 형상을 도시하였다. 필터(4)는 금속성분으로 피막된 비투과대(8)와 유리등 투명한 물질로 된 투과대(7)의 비로서 단위면적에 통과되는 빛의 양을 조절한다.The filter 4 is fabricated by a photographic plate method, and its shape is shown in FIG. The filter 4 controls the amount of light passing through the unit area as a ratio between the non-transparent zone 8 coated with a metal component and the transparent zone 7 made of a transparent material such as glass.
즉,으로 나타낸다.In other words, Represented by
선형인 경우 선과선 사이의 간격을 피치(9)라 하고 비투과대 사이의 간격, 즉 투과대의 폭을 슬릿폭(10)이라 한다.In the linear case, the interval between the line and the line is referred to as the pitch 9, and the interval between the non-transmissive zones, that is, the width of the transmission zone is referred to as the slit width 10.
사진건판법을 이용한 필터의 경우 전면에 걸쳐 투과대(7)와 비투과대(8)로 나누어져 있어 필터를 통과한 빛의 양이 전면에 걸쳐 연속적인 분포로 만들기 위해서는 필터(4)를 적당히 구동시켜야 한다.In the case of the filter using the photographic plate method, the filter is divided into a transmission band (7) and a non-transmission band (8), so that the amount of light passing through the filter is properly driven to make a continuous distribution over the entire surface. You have to.
그러나 사진건판법을 이용한 필터의 경우 전면에 걸쳐 투과대(7)와 비투과대(8)로 나누어져 있어 필터(4)를 통과한 빛의 양이 전면에 걸쳐 연속적인 분포로 만들기 위해서는 필터(4)를 적당히 구동시켜야 하지만 필터를 통과한 빛의 분포가 필터무늬의 피치가 적합하지 않으면 비 이상적으로 되고 그것이 화면(11)에 얼룩으로 나타나게 된다.However, in the case of the filter using the photographic plate method, the filter is divided into a transmission band (7) and a non-transmission band (8) over the entire surface. ) Should be driven properly, but the distribution of light passing through the filter is non-ideal if the pitch of the filter pattern is not appropriate and it appears as a stain on the screen 11.
제3도는 필터무늬의 피치(9)가 과다하게 큰 경우를 나타내고 있는데, (a)와 같이 광원에서 출발한 빛이 필터의 투과영역을 통과하면 스크린에는 a와 같이 사다리꼴 형태의 조도분포가 발생한다. 다시 필터를 b와같이 피치만큼 이동시켜서 두개의 조도분포를 합성하면 c 와같은 밝고(A) 어두움(B)의 차이가 발생하고 이러한 차이가 (b)에 나타낸바와 같이 얼룩무늬가 필터무늬의 크기만 변한채로 사진을 찍듯이 판넬에 나타나게 됨을 볼수있다.3 shows an excessively large pitch 9 of the filter pattern. As shown in (a), when light from the light source passes through the filter area, a trapezoidal roughness distribution is generated on the screen as shown in a. . Again, combining the two roughness distributions by moving the filter by the pitch, as in b, results in a difference in light (A) and dark (B), such as c, and the difference is shown in (b). You can see it appears on the panel as if you were taking a picture.
필터무늬얼룩은 판넬에 블랙매트릭스 형성시 피치의 정수배 만큼의 거리를 구동시킴으로서 감소시킬 수 있지만 광원의 크기등의 다른조건들 때문에 완전히 없앨수는 없다. 또한 필터무늬얼룩은 필터무늬의 필터(4)의 피치(9)가 크면 클수록 더욱 크게 나타난다.Filter spots can be reduced by driving an integer multiple of the pitch when forming a black matrix on the panel, but cannot be completely eliminated due to other conditions such as the size of the light source. Also, the larger the filter pattern stain is, the larger the pitch 9 of the filter 4 of the filter pattern is.
제4도는 필터의 피치가 너무 작은경우를 나타내고 있는데 광원(5)에서 출발한 빛(6)이 필터(4)의 투과영역(7)을 통과할때 작은 슬릿폭(10)에 의해 회절되는데 이러한 다중슬릿에 의해 빛이 간섭과 회절됨으로서 화면(11)에는 (b)와 같이 밝고 어두운 회절무늬가 발생하게 된다. 필터는 투과율을 각 점에서 갖도록 설계됨으로서 피치와 투과율이 정해지면 슬릿의 폭은 정해진다.4 shows a case in which the pitch of the filter is too small, which is diffracted by the small slit width 10 when the light 6 originating from the light source 5 passes through the transmission region 7 of the filter 4. As light is interfered and diffracted by the multiple slit, the light and dark diffraction patterns are generated on the screen 11 as shown in (b). The filter is designed to have a transmittance at each point so that the width of the slit is determined when the pitch and the transmittance are determined.
슬릿폭 = 투과율 × 피치Slit Width = Transmittance × Pitch
회절현상은 슬릿폭과 피치에 관계가 깊은데 상기한 바와같이 고정된 투과율에서는 피치가 줄어들면 슬릿폭도 작게 변하므로 회절현상은 더욱 강하게 일어나 밝은 회절무늬와 어두운 회절무늬의 상대적 세기도 더욱 크게되고 회절무늬 사이의 간격도 더욱 줄어들게 된다.The diffraction phenomenon is closely related to the slit width and the pitch. As described above, when the pitch decreases, the slit width also changes as the pitch decreases, so that the diffraction phenomenon becomes stronger, so that the relative intensities of the light and dark diffraction patterns become larger and diffraction The spacing between patterns is further reduced.
이러한 회절무늬는 필터를 구동한다 하여도 아무런 영향을 받지 않는다. 따라서 필터무늬의 간격은 화면에서의 필터무늬 얼룩과 회절무늬 얼룩을 고려하여 설계될 필요가 있다.This diffraction pattern is not affected even by driving the filter. Therefore, the filter pattern spacing needs to be designed in consideration of filter pattern stains and diffraction pattern stains on the screen.
본 발명은 이러한 점을 감안하여 필터무늬 얼룩과 회절무늬 얼룩이 최소화하도록 필터무늬의 피치를 0.15∼0.75mm 로 구성함으로서, 칼라수상관이 보다 양질의 화면품질을 얻을수 있도록 하는데 목적이 있다.The present invention has been made in view of the above-described problem by forming a pitch of the filter pattern of 0.15-0.75 mm so that the filter pattern unevenness and the diffraction pattern unevenness are minimized.
본 발명을 첨부도면을 참조하여 이하에서 상세히 설명한다.The present invention will be described in detail below with reference to the accompanying drawings.
필터무늬얼룩은 필터무늬의 피치가 클수록 커지고 회절무늬얼룩은 피치가 작을수록 강해지는데 이를 최소화하기 위해서 본 발명에서는 필터무늬의 피치를 0.15mm∼0.75mm 내에서 구성시킴으로서 적합한 피치를 갖는 필터를 만들었다.The larger the pitch of the filter pattern and the smaller the pitch of the diffraction pattern, the smaller the pitch is. In order to minimize this, in the present invention, a filter having a suitable pitch is formed by configuring the pitch of the filter pattern within 0.15 mm to 0.75 mm.
제5도는 필터무늬의 피치를 조절하여 얻은 자료로서 횡축은 필터무늬의 강도, 종축은 회절무늬얼룩의 강도를 나타내었으며 그 양은 피치가 0.45mm 보다 작은 경우에는 회절무늬 얼룩은 급격히 증가하는 반면 필터무늬 얼룩은 줄어들었다. 0.15mm피치로 설계된 필터를 사용하여 제작한 화면에서는 필터무늬얼룩은 줄어들었으나 회절무늬얼룩이 보이기 시작했고, 피치가 0.05mm인 경우에는 회절무늬얼룩이 0.45mm 피치인 경우보다 10배정도 강하게 나타났다.5 is the data obtained by adjusting the pitch of the filter pattern. The horizontal axis represents the intensity of the filter pattern and the vertical axis represents the intensity of the diffraction pattern stain. The amount of the diffraction pattern stain increases rapidly while the amount is smaller than 0.45mm. The stain was reduced. On the screen made using a filter designed with 0.15mm pitch, the filter pattern stains were reduced but the diffraction pattern stains started to appear. When the pitch was 0.05mm, the diffraction pattern stains were 10 times stronger than the 0.45mm pitch.
반대로 0.45mm보다 피치가 클 경우에는 회절무늬 얼룩은 줄어들었으나 필터무늬얼룩이 강하게 나타났다. 0.75mm 피치의 경우 회절무늬가 거의 사라진 반면 필터무늬얼룩이 보이기 시작했으나 3.0mm의 피치인 경우에는 필터무늬얼룩이 강하게 나타났다.On the contrary, when the pitch was larger than 0.45mm, the diffraction pattern stain was reduced but the filter pattern stain was strong. In the case of 0.75mm pitch, the diffraction pattern almost disappeared, but the filter patterned stain began to be seen, but in the 3.0mm pitch, the filter patterned stain was strong.
즉, 필터무늬얼룩과 회절무늬얼룩이 최소화하기 위해서는 필터무늬의 피치가 0.15mm보다 커야하며 0.75mm 보다는 작아야 하는것을 알수있다.That is, the pitch of the filter pattern should be larger than 0.15mm and smaller than 0.75mm in order to minimize the filter pattern stain and the diffraction pattern stain.
이상에서 살펴본 바와같은 본 발명은 사진건판식 필터를 사용할때 그 무늬의 피치를 0.15mm∼0.75mm 사이에 둠으로서 필터의 피치로 인해 생기는 화면상의 필터무늬얼룩과 회절무늬얼룩을 최소화하고 양질의 화면품질을 제공할수 있도록 하는 발명이다.As described above, the present invention minimizes the filter pattern stain and the diffraction pattern stain caused by the pitch of the filter by placing the pitch of the pattern between 0.15 mm and 0.75 mm when the photo-plate filter is used. It is an invention to provide quality.
Claims (1)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1019950049338A KR0177945B1 (en) | 1995-12-13 | 1995-12-13 | Filter for compensating of amount of light in color cathode ray tube |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1019950049338A KR0177945B1 (en) | 1995-12-13 | 1995-12-13 | Filter for compensating of amount of light in color cathode ray tube |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| KR970051642A KR970051642A (en) | 1997-07-29 |
| KR0177945B1 true KR0177945B1 (en) | 1999-03-20 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| KR1019950049338A KR0177945B1 (en) | 1995-12-13 | 1995-12-13 | Filter for compensating of amount of light in color cathode ray tube |
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| Country | Link |
|---|---|
| KR (1) | KR0177945B1 (en) |
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1995
- 1995-12-13 KR KR1019950049338A patent/KR0177945B1/en not_active IP Right Cessation
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| Publication number | Publication date |
|---|---|
| KR970051642A (en) | 1997-07-29 |
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