KR100338034B1 - Structure of front panel of color cathode ray tube - Google Patents

Structure of front panel of color cathode ray tube Download PDF

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Publication number
KR100338034B1
KR100338034B1 KR1019940036921A KR19940036921A KR100338034B1 KR 100338034 B1 KR100338034 B1 KR 100338034B1 KR 1019940036921 A KR1019940036921 A KR 1019940036921A KR 19940036921 A KR19940036921 A KR 19940036921A KR 100338034 B1 KR100338034 B1 KR 100338034B1
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KR
South Korea
Prior art keywords
front panel
ray tube
cathode ray
light
color cathode
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Application number
KR1019940036921A
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Korean (ko)
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KR960026054A (en
Inventor
유영철
노환철
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삼성에스디아이 주식회사
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Priority to KR1019940036921A priority Critical patent/KR100338034B1/en
Publication of KR960026054A publication Critical patent/KR960026054A/en
Application granted granted Critical
Publication of KR100338034B1 publication Critical patent/KR100338034B1/en

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    • 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
    • H01J29/86—Vessels; Containers; Vacuum locks
    • H01J29/89—Optical or photographic arrangements structurally combined or co-operating with the vessel
    • H01J29/896—Anti-reflection means, e.g. eliminating glare due to ambient light
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J2229/00—Details of cathode ray tubes or electron beam tubes
    • H01J2229/89—Optical components associated with the vessel
    • H01J2229/8913—Anti-reflection, anti-glare, viewing angle and contrast improving treatments or devices

Abstract

PURPOSE: A structure of a front panel of a color cathode ray tube is provided to increase luminance and contrast by using the front panel of the cathode ray tube with a transparent panel. CONSTITUTION: A front panel(1) is formed with a transparent material in order to increase the amount of light transmission of phosphors. A polarization layer(2) is formed on a predetermined position of a surface of the transparent front panel(1) in order to polarize horizontally the light reflected by the transparent front panel(1). A reflected light(4) of external light(3) is partially provided to the transparent front panel(1) since the polarization layer(2) is installed vertically to the reflected light(4) in order to reduce the amount of the reflected light and increase contrast of a cathode ray tube.

Description

칼라음극선관의 전면판넬구조Front panel structure of color cathode ray tube

본 발명은 칼라음극선관의 전면판넬구조에 관한 것으로서, 보다 상세하게는 투명한 판넬을 사용하여 음극선관의 전면판넬을 형성함으로써 휘도와 콘트라스트를 증대시킬 수 있도록 한 칼라음극선관의 전면판넬구조에 관한 것이다.The present invention relates to a front panel structure of a color cathode ray tube, and more particularly, to a front panel structure of a color cathode ray tube capable of increasing luminance and contrast by forming a front panel of a cathode ray tube using a transparent panel. .

종래의 칼라음극선관에서는 반 투명(semi dark tint) 판넬을 사용하여 그 안쪽에 형광체를 도포하여 형광면을 형성하는 구조로 되어 있으며, 전자총에서 발사된 전자가 상기 판넬부의 형광면에 도달하여 형광체를 자극시키게 되면 이 형광체가 발광하며, 이때 상기 형광체에서 발광한 빛의 경사각이 굴절임계각을 넘을 때에는 형광체층과 유리층사이의 경계면을 따라 내부로 반사하게 되나 상기 빛의 경사각이 임계각보다 작은 범위에 있을 때에는 빛의 일부가 유리를 투과하여 외부로 투과되나, 나머지 일부는 상기 경계면에서 반사하여 최초 형광체와 인접한 다른 형광체를 자극시킴으로써 처음과 다른 색을 발광시켜 주게 되므로 색의 간섭을 일으키게 되어 음극선관의 콘트라스트를 저하시키는 문제점이 있었다.In the conventional color cathode ray tube, a semi dark tint panel is used to apply a phosphor on the inside to form a fluorescent surface, and electrons emitted from the electron gun reach the fluorescent surface of the panel to stimulate the phosphor. When the inclination angle of the light emitted from the phosphor exceeds the refraction threshold angle, the phosphor is reflected inside the boundary between the phosphor layer and the glass layer, but when the inclination angle of the light is smaller than the critical angle, the light is emitted. Part of the light penetrates the glass and is transmitted to the outside, but the other part reflects at the boundary surface and stimulates another phosphor adjacent to the initial phosphor, thereby causing the color to be different from the first, causing color interference, thereby reducing the contrast of the cathode ray tube. There was a problem letting.

본 발명은 상기와 같은 문제점을 해결하기 위해 안출한 것으로서, 본 발명의 목적은 투명한 판넬을 사용하여 음극선관의 전면 판넬을 형성하고 그 표면에 편광막을 부착함으로써 내부 전자빔에 의한 형광체의 광투과량을 증대시키고, 외광의 반사에 의한 음극선관의 휘도와 콘트라스트를 향상시킬 수 있는 한 칼라음극선관의 전면판넬구조를 제공함에 있다.The present invention has been made to solve the above problems, an object of the present invention is to form a front panel of the cathode ray tube using a transparent panel and attach a polarizing film on the surface to increase the light transmittance of the phosphor by the internal electron beam The present invention provides a front panel structure of a color cathode ray tube that can improve brightness and contrast of a cathode ray tube due to reflection of external light.

상기와 같은 목적을 달성하기 위한 본 발명에 따른 칼라음극선관의 전면판넬구조의 특징은, 투명한 판넬을 사용하여 음극선관의 전면판넬을 형성하고, 상기 투명한 전면판넬의 표면에는 외광으로부터 반사되는 빛에 대하여 수직한 편광막을 부착함에 있다.A feature of the front panel structure of the color cathode ray tube according to the present invention for achieving the above object is to form a front panel of the cathode ray tube using a transparent panel, the surface of the transparent front panel to the light reflected from outside light It is to attach a polarizing film perpendicular to the.

이하, 본 발명에 따른 칼라음극선관의 전면판넬구조의 바람직한 하나의 실시예에 대하여 첨부도면을 참고하여 상세히 설명한다.Hereinafter, a preferred embodiment of the front panel structure of the color cathode ray tube according to the present invention will be described in detail with reference to the accompanying drawings.

제 1도는 본 발명에 의한 칼라음극선관의 개략적인 판넬구조를 보인 단면도이고, 제 2도는 본 발명에 의한 전면판넬구조를 상세하게 나타낸 단면도로서 도면에 도시된 바와 같이, 내부 형광면을 통해 투과되는 형광체의 광투과량을 증대시키기 위한 투명한 전면판넬(1)을 형성하고, 그 내부에는 상기 투명한 전면판넬(1)의 표면에는 외광(3)으로부터 반사되어 나오는 반사광(4)에 대하여 수직하게편광막(2)을 위치시켜 구성한다.1 is a cross-sectional view showing a schematic panel structure of a color cathode ray tube according to the present invention, Figure 2 is a cross-sectional view showing in detail the front panel structure according to the present invention, as shown in the figure, the phosphor transmitted through the inner fluorescent surface The transparent front panel 1 is formed to increase the light transmittance of the polarizing film 2, and the polarizing film 2 is perpendicular to the reflected light 4 reflected from the external light 3 on the surface of the transparent front panel 1. ) To locate.

이상에서와 같은 본 발명에 따른 칼라음극선관의 판넬구조에서는, 투명한 전면판넬(1)을 형성함으로써 내부 전자총에서 발사된 전자가 형광면을 통해 투과되는 형광체의 광투과량을 기존의 반 투명판넬에서 보다 증대시킬 수 있게 되며, 또한 반사되는 빛은 편광된다는 간단한 물리적인 원리를 기초로 하여 상기의 투명한 전면판넬(1)의 표면의 소정위치에 편광막(2)을 형성시킴으로써 외광으로부터 입사되어 상기 투명한 전면판넬(1)에 의해 반사되는 빛은 수평으로 편광되어 있게 되므로, 편광막(2)을 상기 반사되어 나오는 반사광(4)에 대하여 수직하게 위치시키게 되면 반사되는 빛의 일부를 다시 전면판넬(1)에 공급할 수 있게 되므로 반사되는 광량을 양을 줄일 수 있어서 음극선관의 콘트라스트도 증가시킬 수 있다.In the panel structure of the color cathode ray tube according to the present invention as described above, by forming the transparent front panel (1), the light transmittance of the phosphor through which electrons emitted from the inner electron gun are transmitted through the fluorescent surface is increased more than in the conventional semi-transparent panel. Also, based on the simple physical principle that the reflected light is polarized, the transparent front panel is incident from external light by forming the polarizing film 2 at a predetermined position on the surface of the transparent front panel 1. Since the light reflected by (1) is horizontally polarized, when the polarizing film 2 is positioned perpendicularly to the reflected reflected light 4, part of the reflected light is returned to the front panel 1 again. Since it can supply, the quantity of reflected light can be reduced and the contrast of a cathode ray tube can also be increased.

이상에서와 같은 본 발명에 의한 칼라음극선관의 전면판넬구조에 의하면, 칼라음극선관의 전면판넬의 내부에서 투과되는 형광체의 광투과량을 증대시킬 수 있고 외부로부터 전면판넬의 표면에서 반사되는 빛의 일부를 다시 전면판넬에 공급할 수 있게 되므로 반사되는 광량을 양을 줄일 수 있어서 칼라음극선관의 휘도와 콘트라스트를 향상시킬 수 있게 되는 유용함이 있다.According to the front panel structure of the color cathode ray tube according to the present invention as described above, it is possible to increase the light transmittance of the phosphor that is transmitted inside the front panel of the color cathode ray tube and a part of the light reflected from the surface of the front panel from the outside Since it can be supplied to the front panel again, the amount of reflected light can be reduced, so that the brightness and contrast of the color cathode ray tube can be improved.

제 1도는 본 발명에 의한 칼라음극선관의 개략적인 판넬구조를 보인 단면도1 is a cross-sectional view showing a schematic panel structure of a color cathode ray tube according to the present invention

제 2도는 본 발명에 의한 전면판넬구조를 상세하게 나타낸 단면도2 is a cross-sectional view showing in detail the front panel structure according to the present invention

* 도면의 주요 부분에 대한 부호의 설명* Explanation of symbols for the main parts of the drawings

1 ; 투명 전면판넬 2 ; 편광막One ; Transparent front panel 2; Polarizer

3 ; 외광 4 ; 반사광3; External light 4; Reflected light

Claims (2)

음극선관의 전면판넬에 있어서, 상기 전면판넬이 투명한 재질의 판넬로 이루어지고, 전면판넬의 외측 전면에 편광막이 부착된 것을 특징으로 하는 칼라음극선관의 전면판넬구조.The front panel of the cathode ray tube, wherein the front panel is made of a transparent material panel, the front panel structure of the color cathode ray tube, characterized in that the polarizing film is attached to the outside of the front panel. 제 1 항에 있어서, 상기 편광막은 외광으로부터 입사되어 상기 전면판넬의 표면에서 반사되어 나오는 반사광에 대하여 수직되게 위치하여 반사광을 상기 전면판넬로 되반사시키도록 된 것을 특징으로 하는 칼라음극선관의 전면판넬구조.The front panel of the color cathode ray tube according to claim 1, wherein the polarizing film is positioned perpendicular to the reflected light incident from outside light and reflected from the surface of the front panel to reflect the reflected light back to the front panel. rescue.
KR1019940036921A 1994-12-26 1994-12-26 Structure of front panel of color cathode ray tube KR100338034B1 (en)

Priority Applications (1)

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KR1019940036921A KR100338034B1 (en) 1994-12-26 1994-12-26 Structure of front panel of color cathode ray tube

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Application Number Priority Date Filing Date Title
KR1019940036921A KR100338034B1 (en) 1994-12-26 1994-12-26 Structure of front panel of color cathode ray tube

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KR960026054A KR960026054A (en) 1996-07-20
KR100338034B1 true KR100338034B1 (en) 2002-10-31

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57196453A (en) * 1981-05-28 1982-12-02 Matsushita Electronics Corp Color display tube
JPS59148249A (en) * 1983-02-14 1984-08-24 Hitachi Ltd Cathode-ray tube
JPH06103930A (en) * 1992-09-17 1994-04-15 Hitachi Ltd Cathode-ray tube and its manufacture
JPH06103931A (en) * 1992-09-17 1994-04-15 Hitachi Ltd Cathode-ray tube
KR940013641U (en) * 1992-11-23 1994-06-25 삼성전관주식회사 Cathode ray tube

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57196453A (en) * 1981-05-28 1982-12-02 Matsushita Electronics Corp Color display tube
JPS59148249A (en) * 1983-02-14 1984-08-24 Hitachi Ltd Cathode-ray tube
JPH06103930A (en) * 1992-09-17 1994-04-15 Hitachi Ltd Cathode-ray tube and its manufacture
JPH06103931A (en) * 1992-09-17 1994-04-15 Hitachi Ltd Cathode-ray tube
KR940013641U (en) * 1992-11-23 1994-06-25 삼성전관주식회사 Cathode ray tube

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