KR19980065832A - Fluorescent surface of color CRT - Google Patents

Fluorescent surface of color CRT Download PDF

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Publication number
KR19980065832A
KR19980065832A KR1019970001002A KR19970001002A KR19980065832A KR 19980065832 A KR19980065832 A KR 19980065832A KR 1019970001002 A KR1019970001002 A KR 1019970001002A KR 19970001002 A KR19970001002 A KR 19970001002A KR 19980065832 A KR19980065832 A KR 19980065832A
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South Korea
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layer
phosphor
panel
fluorescent surface
light
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KR1019970001002A
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Korean (ko)
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박진목
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구자홍
엘지전자 주식회사
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Priority to KR1019970001002A priority Critical patent/KR19980065832A/en
Publication of KR19980065832A publication Critical patent/KR19980065832A/en

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Abstract

본 발명은 칼라브라운관의 형광막에 관한 것으로, 특히 판넬내면에 형성되는 형광면이 일정평탄도를 유지할 수 있도록 형성함으로 스크린 표면에 형성되는 투과광은 BM층에 흡수 및 난반사 현상이 일어나지 않고 투과광의 세기가 강해지도록 집광되어 휘도향상 및 포커스특성을 향상시키도록 하는데 목적이 있다.The present invention relates to a fluorescent film of a color brown tube, and in particular, the fluorescent surface formed on the inner surface of the panel is formed to maintain a constant flatness, so that the transmitted light formed on the screen surface is absorbed and diffused in the BM layer, and the intensity of the transmitted light does not occur. It is aimed to be concentrated so as to be strong to improve luminance and focus characteristics.

이를 실현하기 위하여 본 발명은 형광체가 흘러들어 평탄하게 형성될수 있도록 BM층 상단부를 오목형상으로 형성시킨 것이다.In order to realize this, the present invention is to form a concave shape of the upper end of the BM layer so that the phosphor flows flatly.

Description

칼라브라운관의 형광면Fluorescent surface of color CRT

본 발명은 칼라브라운관에 관한 것으로서, 특히 브라운관의 판넬 내면에 도포되는 형광면을 평탄하게 형성함으로 형광체의 모서리부에서 발생되는 난반사를 저감시키기 위한 형광면 구조에 관한 것이다.BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a color brown tube, and more particularly, to a fluorescent surface structure for reducing diffuse reflection generated at an edge portion of a phosphor by forming a flat fluorescent surface applied to an inner surface of a panel of the CRT.

일반적인 칼라 브라운관의 구성을 살펴보면 도 1 에 도시된 바와같이 브라운관의 전면에 장착되는 판넬(2)과, 상기 판넬(2)의 내측에 장착되어 입사되는 전자빔의 색선별 기능을 갖는 섀도우마스크(7)와, 상기 섀도우마스크(7)를 고정 지지하고 있는 프레임(6)과, 상기 판넬(2)의 후면에 결합되어 내부를 진공상태로 유지하는 펀넬(3)과, 상기 펀넬(3)의 후방으로 후퇴되어 있는 관형상의 네크부(1)와, 상기 네크부(1) 내부에 장착되어 전자빔(9)을 방출하는 전자총(5)과, 상기 방출된 전자빔(9)에 작용되는 외부자계를 차단하기 위하여 프레임(6)에 조립되는 인너실드(8)와, 상기 펀넬(3)의 외측을 둘러싸며 전자빔을 편향시키는 편향요크(4)로 구성된다.Looking at the configuration of a common color CRT, a panel 2 mounted on the front of the CRT and a shadow mask 7 having a color discrimination function of an electron beam incident on the inside of the panel 2 are incident. And a frame 6 fixedly supporting the shadow mask 7, a funnel 3 coupled to a rear surface of the panel 2 to maintain an interior in a vacuum state, and a rear of the funnel 3. A retracted tubular neck 1, an electron gun 5 mounted inside the neck 1 to emit an electron beam 9, and blocking an external magnetic field acting on the emitted electron beam 9 The inner shield 8 is assembled to the frame 6 and the deflection yoke 4 surrounds the outer side of the funnel 3 and deflects the electron beam.

그리고 판넬(2)의 내면에는 도 2 에서와 같은 형광면(10)이 형성되어 있는데, 이 형광면은 블렉메트릭스층(BM층;12) 및 각각의 R,G,B 형광체층(13,14,15)과 알루미늄막(16)으로 형성된다.In addition, a fluorescent surface 10 is formed on the inner surface of the panel 2 as shown in FIG. 2, which is a black matrix layer (BM layer) 12 and each of R, G, and B phosphor layers 13, 14, and 15. ) And an aluminum film 16.

도면중 미설명 부호 26 은 판넬(2)의 외면에 도포되는 표면처리막(26)을 나타낸다.In the figure, reference numeral 26 denotes a surface treatment film 26 applied to the outer surface of the panel 2.

BM층(12)의 목적은 브라운관의 제조상 혹은 동작조건의 변화에 의해 전자빔(9)의 랜딩위치 이동에 따른 랜딩에러를 일으키지 않는 범위인 퓨리티 여유도를 향상시켜 생산수율과 브라운관의 콘트라스트를 향상시키기 위한 것이다.The purpose of the BM layer 12 is to improve the production margin and contrast of the CRT by improving the purity margin, which is a range in which a landing error does not occur due to a change in the CRT or operating conditions of the CRT. It is for.

그리고 형광체층(13,14,15)의 목적은 발광면을 형성하여 입사 전자빔(9)의 타격에 의해 여기되어 발광되면서 R,G,B 의 색을 재현하게 된다.The purpose of the phosphor layers 13, 14, and 15 is to form a light emitting surface, which is excited by the strike of the incident electron beam 9 to emit light, thereby reproducing the colors of R, G, and B.

종래 기술의 동작을 도 1 및 도 2 를 참조하여 이하에서 설명하면 다음과 같다.The operation of the prior art will be described below with reference to FIGS. 1 and 2.

브라운관의 전자총(5)에서 나온 전자빔(9)은 판넬(2)쪽으로 등속운동을 하여 새도우마스크(7)를 거쳐 형광면(10)에 이르게 되는데, 이 입사 전자빔(9)에 의해 형광면(10)에 형성된 R,G,B 각각의 형광체 화소(13,14,15)는 여기되어 발광하게 된다.The electron beam (9) from the CRT (5) of the CRT is subjected to constant velocity motion toward the panel (2), and reaches the fluorescent surface (10) via the shadow mask (7), which is incident on the fluorescent surface (10) by the incident electron beam (9). The formed phosphor pixels 13, 14, and 15 of each of R, G, and B are excited to emit light.

형광면에서 발생된 광은 판넬(2)과 표면처리막(26)을 거쳐 스크린 전면으로 투사되며, 펀넬(3)쪽으로 역행한 투사광의 일부는 알루미늄막(16)에 의해 다시 재반사되어 스크린 전면으로 재투사되게 되는데, 형광체층의 모서리부에서는 광이 BM층(12)에 흡수되어 손실되거나 난반사를 일으켜 광이 퍼지는 현상이 발생한다.The light generated from the fluorescent surface is projected to the front of the screen via the panel 2 and the surface treatment film 26, and a part of the projection light back toward the funnel 3 is reflected back by the aluminum film 16 to the front of the screen. In the corner portion of the phosphor layer, light is absorbed and absorbed by the BM layer 12, or diffuse reflection occurs due to diffuse reflection.

따라서, 투사광이 판넬(2)과 표면처리막(26)을 통과하면서 광의 굴절과 난반사 작용에 의해 스크린 전면에 형성된 광은 포커스가 나빠지고, 휘도 또한 광의 손실로 떨어지게 된다.As a result, the projection light passes through the panel 2 and the surface treatment film 26, and the light formed on the entire surface of the screen due to the refraction and diffuse reflection of the light is deteriorated in focus, and the luminance is also reduced due to the loss of light.

또한 BM층(12)과 형광체층의 단차에 의해 알루미늄막의 평탄도가 떨어져 반사되는 광의 난반사 효과에 의해 휘도향상에 영향을 초래하기도 하고, 휘도 및 판넬의 투과율 향상을 위해 글래스두께를 줄일경우 글래스 응력에 의한 방폭특성이 나빠지는 등의 문제점이 발생하였다.In addition, due to the difference between the BM layer 12 and the phosphor layer, the flatness of the aluminum film is reduced, thereby causing the luminance improvement due to the diffuse reflection effect of the light, and the glass stress when the glass thickness is reduced to improve the luminance and the transmittance of the panel. Problems such as deterioration of explosion-proof characteristics caused by.

본 발명은 이러한 점을 감안하여 형광체의 사이에 형성되는 블랙메트릭스층의 상단을 오목형상으로 형성함으로서, 형광체의 도포시 형광체가 블랙메트릭스층 상단으로 흘러들어가도록 하여 형광면이 평탄하게 도포될 수 있도록 하는데 목적이 있다.In view of the above, the present invention forms a concave shape of the upper end of the black matrix layer formed between the phosphors, so that the phosphor flows to the top of the black matrix layer when the phosphor is applied so that the phosphor surface can be applied flatly. There is a purpose.

도 1 은 일반적인 칼라브라운관의 단면도.1 is a cross-sectional view of a typical color brown tube.

도 2 는 종래 형광면의 단면 구성도.2 is a cross-sectional configuration diagram of a conventional fluorescent surface.

도 3 은 본 발명 형광면의 단면 구성도.Figure 3 is a cross-sectional configuration of the fluorescent surface of the present invention.

도 4 는 본 발명의 BM층 상단 확대도.Figure 4 is an enlarged view of the top of the BM layer of the present invention.

도면의 주요 부분에 대한 부호의 설명Explanation of symbols for the main parts of the drawings

100 : 판넬 102 : 블랙메트릭스층100: panel 102: black matrix layer

103 : 방지턱 104,105,106 : 형광체103: jaw 104,105,106: phosphor

108 : 알루미늄막 110 : 형광면108: aluminum film 110: fluorescent surface

본 발명을 이하에서 상세히 설명한다.The present invention is described in detail below.

먼저 구성을 살펴보면 도 3 에 도시된 바와같이 판넬(100) 내측면에는 BM층(102)이 형성되고, 상기 BM층(102)의 상단부를 오목형상으로 형성하며, 상기 오목부(102)에는 형광체층(104,105,106)의 혼색을 방지하도록 방지턱(103)을 형성하였다. 도 4 는 BM층(102) 상단부를 확대하여 나타낸 것으로서 형광체의 도포시 화살표로 표시된 바와같이 형광체(105)가 방지턱(103)까지 흘러들어 평탄하게 도포되는것을 나타낸다.First, as shown in FIG. 3, the BM layer 102 is formed on the inner surface of the panel 100, the upper end of the BM layer 102 is formed in a concave shape, and the concave portion 102 is formed of a phosphor. A bump 103 was formed to prevent color mixing of the layers 104, 105, 106. FIG. 4 is an enlarged view of the upper end of the BM layer 102 and shows that the phosphor 105 flows to the jaw 103 and is evenly applied as indicated by the arrow when the phosphor is applied.

또한, 형광면(110)을 평탄하게 한후 알루미늄막(108)을 균일하게 형성해 줌으로서 반사율 향상에 따른 휘도향상을 가져오게 된다.In addition, by flattening the fluorescent surface 110 and forming the aluminum film 108 uniformly, the luminance is improved by reflectance improvement.

본 발명에 의한 브라운관의 동작을 설명하면 다음과 같다.Referring to the operation of the CRT according to the present invention.

전자총에서 나온 전자빔은 판넬(100)쪽으로 등속운동을 하여 형광면(110)에 이르게 되는데 이 입사 전자빔에 의해 형광면에 형성된 R,G,B 각각의 형광체 화소(104,105,106)는 여기되어 발광하게 된다.The electron beam emitted from the electron gun reaches the phosphor surface 110 by the constant velocity motion toward the panel 100. The phosphor pixels 104, 105, and 106 formed on the phosphor surface by the incident electron beam are excited to emit light.

그리고 형광체에서 발생된 광은 판넬(101)을 거쳐 스크린 전면으로 투사하게 되고 후면으로 역행한 투사광의 일부는 알루미늄막(108)에서 되반사 되는데 이때, 형광체 가장자리부에서 발생한 광은 BM층(107)에 흡수되지 않고 형광체화소를 발광시키게 된다.Light emitted from the phosphor is projected to the front surface of the screen via the panel 101, and a part of the projection light back to the rear is reflected back from the aluminum film 108. At this time, the light generated at the edge of the phosphor is the BM layer 107. It is not absorbed by the phosphor and emits phosphor pixels.

따라서, 투사광은 판넬(101)을 통과하면서 광의 굴절과 반사효과에 의해 분산되지 않고 집광되어 스크린 전면에 형성됨으로서 광손실 감소 및 집광효과에 의해 상대적으로 휘도와 포커스특성이 좋아지게 된다.Therefore, the projection light is collected and formed on the front surface of the screen while being scattered without being scattered by the refraction and reflection effects of the light while passing through the panel 101, so that the brightness and focus characteristics are relatively improved by the reduction of the light loss and the light condensing effect.

이상에서 살펴본 바와같은 본 발명은 판넬내면에 형성되는 형광면이 일정평탄도를 유지하도록 형성되어 있기 때문에 스크린 표면에 형성되는 투과광은 BM층에 흡수 및 난반사 현상이 일어나지 않고 투과광의 세기가 강해지도록 집광되어 휘도향상 및 포커스특성을 향상시키는 효과가 있다.In the present invention as described above, since the fluorescent surface formed on the inner surface of the panel is formed to maintain a constant flatness, the transmitted light formed on the screen surface is condensed to increase the intensity of the transmitted light without absorbing and diffuse reflection phenomenon in the BM layer. There is an effect of improving the brightness and focus characteristics.

Claims (2)

판넬의 내면에 BM층이 형성되고, 상기 BM층 사이에 R,G,B 형광체층이 형성되는 판넬의 형광면 구조에 있어서, 형광면이 평탄하게 형성될수 있도록 BM층 상단부를 오목형상으로 형성한것을 특징으로 하는 칼라브라운관의 형광면.In the fluorescent surface structure of the panel in which the BM layer is formed on the inner surface of the panel and the R, G, and B phosphor layers are formed between the BM layers, the upper surface of the BM layer is formed in a concave shape so that the fluorescent surface can be formed flat. Fluorescent surface of color CRT. 제 1 항에 있어서, 상기 BM층 상단부는 형광체의 혼색을 방지하기 위한 방지턱을 중심부에 구비한 것을 특징으로 하는 칼라브라운관의 형광면.According to claim 1, wherein the upper end portion of the BM layer of the fluorescent surface of the color-brown tube, characterized in that the prevention jaw to prevent the mixing of the phosphor at the center.
KR1019970001002A 1997-01-15 1997-01-15 Fluorescent surface of color CRT KR19980065832A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101023122B1 (en) * 2008-12-23 2011-03-24 주식회사 포스코 Removal apparatus for iron in cooling zone of verticla annealing furnace

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101023122B1 (en) * 2008-12-23 2011-03-24 주식회사 포스코 Removal apparatus for iron in cooling zone of verticla annealing furnace

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