KR100201126B1 - Flat crt - Google Patents

Flat crt Download PDF

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Publication number
KR100201126B1
KR100201126B1 KR1019930026181A KR930026181A KR100201126B1 KR 100201126 B1 KR100201126 B1 KR 100201126B1 KR 1019930026181 A KR1019930026181 A KR 1019930026181A KR 930026181 A KR930026181 A KR 930026181A KR 100201126 B1 KR100201126 B1 KR 100201126B1
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KR
South Korea
Prior art keywords
electrode
electron beam
focusing electrode
ray tube
cathode ray
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KR1019930026181A
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Korean (ko)
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KR950015453A (en
Inventor
이주일
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김영남
오리온전기주식회사
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Priority to KR1019930026181A priority Critical patent/KR100201126B1/en
Publication of KR950015453A publication Critical patent/KR950015453A/en
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    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01JELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J3/00Details of electron-optical or ion-optical arrangements or of ion traps common to two or more basic types of discharge tubes or lamps
    • H01J3/12Arrangements for controlling cross-section of ray or beam; Arrangements for correcting aberration of beam, e.g. due to lenses

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  • Cathode-Ray Tubes And Fluorescent Screens For Display (AREA)

Abstract

본 발명은 평판형 음극선관을 개시한다.The present invention discloses a flat cathode ray tube.

본 발명은 라인 캐소오드와, 라인 캐소오드로부터 순차적으로 설치되어 다수의 전자빔 통과공이 형성된 제어전극, 신호 변조전극 및 집속전극을 구비하여된 평판형 음극선관에 관한 것으로, 집속전극의 전자빔 출사측과 소정간격 이격되게 설치되며 다수의 전자빔통과공이 형성된 보조 집속전극이 구비되어 구성된 것에 특징이 있으며, 평판형 음극선관의 집속전극과 신호편향전극사이가 벌어짐으로써 전자빔 스포트가 커지는 것을 방지할 있는 이점을 가진다.The present invention relates to a planar cathode ray tube having a line cathode and a control electrode, a signal modulation electrode, and a focusing electrode, which are sequentially installed from the line cathode and formed with a plurality of electron beam through holes. It is characterized in that the auxiliary focusing electrode is provided spaced apart a predetermined interval and provided with a plurality of electron beam through holes formed, there is an advantage to prevent the electron beam spot increases by the gap between the focusing electrode and the signal deflection electrode of the flat cathode ray tube. .

Description

평면형 음극선관Flat cathode ray tube

제1도는 종래 평면형 음극선관을 도시한 분리사시도.1 is an exploded perspective view showing a conventional planar cathode ray tube.

제2도는 본 발명에 따른 평면형 음극선관의 분리 사시도.2 is an exploded perspective view of the planar cathode ray tube according to the present invention.

제3도는 제2도에 도시된 접속전극과 보조집속전극 사이에 형성되는 집속렌즈를 가시화시켜 나타내보인 단면도.3 is a cross-sectional view of a focusing lens formed between the connecting electrode and the auxiliary focusing electrode shown in FIG.

* 도면의 주요부분에 사용된 부호의 설명* Explanation of symbols used in the main part of the drawing

21 : 형광막 24 : 수직편향판21: fluorescent film 24: vertical deflection plate

25 : 수평편향판 26 : 집속전극25: horizontal deflection plate 26: focusing electrode

27 : 신호 변조전극 30 : 보조집속전극27: signal modulation electrode 30: auxiliary focusing electrode

R : 저항R: resistance

본 발명은 평판형 음극선관에 관한 것으로, 더 상세하게는 집속전극의 배열구조가 개선된 평판형 음극선관에 관한 것이다.The present invention relates to a flat cathode ray tube, and more particularly, to a flat cathode ray tube having an improved arrangement of focusing electrodes.

통상적으로 삼극관의 원리를 이용한 평면형 음극선관은 칼라 텔레비젼의 수상기, 계산기 등의 단말 디스플레이 등에 사용되는 것으로, 제1도에 나타내 보인바와같이 형광막(11)이 형성된 스크린면(12)을 가진 진공용기(13)와, 이 형광막과 소정간격이격되도록 설치된 수직 및 수평편향판(14)(15)과, 이수평편향판(15)으로부터 순차적으로 설치되며 전자빔 통과공(16a)(17a)(18a)이 각각 형성된 집속전극(16), 신호변조전극(17) 및 제어전극(18)과, 이 제어전극(18)과 인접되게 설치된 라인캐소오드(19)를 구비하여 구성된다.In general, a planar cathode ray tube using the principle of a triode is used for terminal displays such as color television receivers, calculators, and the like, and a vacuum vessel having a screen surface 12 on which a fluorescent film 11 is formed as shown in FIG. 13, vertical and horizontal deflection plates 14 and 15 provided so as to be spaced apart from the fluorescent film by a predetermined distance, and sequentially provided from the horizontal and horizontal deflection plates 15, and electron beam passing holes 16a, 17a and 18a. And a focusing electrode 16, a signal modulating electrode 17 and a control electrode 18, and a line cathode 19 provided adjacent to the control electrode 18, respectively.

이와 같이 구성된 종래 평판형 음극선관(10)은 상기 라인 캐소오드(19)에 소정의 전압이 인가됨에 따라 이로부터 열전자가 방츨되게 되는데, 방출된 전자빔은 가속전극(도시되지 않음)에 의해 가속된 후 제어전극(18) 및 신호변조전극(17)에 의해 선택적으로 제어된 후 집속전극(16)에 의해 집속된다. 그리고 집속된 전자빔은 수평 및 수직편향판(15)(16)에 의해 편향되어 형광막(11)에 랜딩됨으로써 화상을 형성하게 된다.In the conventional flat cathode ray tube 10 configured as described above, hot electrons are discharged from the line cathode 19 when a predetermined voltage is applied thereto. The emitted electron beam is accelerated by an acceleration electrode (not shown). It is selectively controlled by the control electrode 18 and the signal modulating electrode 17 and then focused by the focusing electrode 16. The focused electron beam is deflected by the horizontal and vertical deflection plates 15 and 16 to be landed on the fluorescent film 11 to form an image.

이와 같은 평판형 음극선관은 그 크기가 커짐에 따라 신호변조전극(17)과 집속전극(16)사이의 간격이 넓어져 형광막(11)에 랜딩되는 전자빔 스포트의 크기가 커지게되어 형광막(11)이 여기됨으로써 형성되는 화상의 해상도가 저하되는 문제점이 내재되어 있었다.As the size of the flat cathode ray tube increases, the distance between the signal modulating electrode 17 and the focusing electrode 16 increases, so that the size of the electron beam spot landing on the fluorescent film 11 increases. The problem that the resolution of the image formed by the excitation of 11) falls was inherent.

본 발명은 이러한 종래의 문제점을 해결하기 위하여 창출된 것으로, 대형화됨에 따른 전자빔 스포트의 크기가 커지는 것을 방지하여 전자빔이 형광막에 랜딩됨으로써 형성되는 화상의 해상도를 향상시킬 수 있는 평판형 음극선관을 제공함에 그 목적이 있다.SUMMARY OF THE INVENTION The present invention has been made to solve such a conventional problem, and provides a flat cathode ray tube which can prevent the size of an electron beam spot from increasing in size and improve the resolution of an image formed by landing the electron beam on a fluorescent film. Has its purpose.

상술한 목적을 달성하기 위하여 본 발명은, 라인 캐소오드와, 라인 캐소오드로부터 순차적적으로 설치되며 다수의 전자빔 통과공이 형성된 제어전극, 신호 변조전극 및 집속전극을 구비하여된 평판형 음극선관에 있어서, 집속전극의 전자빔 출사측과 소정간격 이격되게 설치되며 다수의 전자빔통과공이 형성된 보조 집속전극이 구비되어 구성된 것을 그 특징으로 한다.In order to achieve the above object, the present invention, in the flat cathode ray tube provided with a line cathode, a control electrode, a signal modulation electrode and a focusing electrode which is provided sequentially from the line cathode and formed with a plurality of electron beam through holes The auxiliary focusing electrode is provided to be spaced apart from the electron beam emitting side of the focusing electrode at a predetermined interval, and the auxiliary focusing electrode having a plurality of electron beam passing holes is provided.

본 발명에 있어서, 보조 집속전극에 소정전압의 인가는 집속전극과 보조전극사이에 저항을 설치함으로써 집속전극에 인가되는 전압을 강하시켜 인가함이 바람직하다.In the present invention, it is preferable to apply a predetermined voltage to the auxiliary focusing electrode by lowering the voltage applied to the focusing electrode by providing a resistor between the focusing electrode and the auxiliary electrode.

이하 첨부된 도면을 참조하여 본 발명에 따른 한 바람직한 실시예를 상세하게 설명하면 다음과 같다.Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

본 발명에 따른 평판형 음극선관은 제2도에 도시된 바와같이 형광막(21)이 형성된 스크린면(22)을 가진 진공용기(23)와, 이형광막과 소정간격 이격되도록 설치된 수직 및 수평편향판(24)(25)과, 이 수평편향판(25)으로부터 순차적으로 설치되며 전자빔 통과공(26a)(27a)(28a)이 각각 형성된 집속전극(26), 신호변조전극(27) 및 제어전극(28)과, 이 제어전극(28)과 인접되게 설치된 라인캐소오드(29)를 구비하여 구성되는데, 집속전극(26)과 수평편향판(25)사이에는 본 발명의 특징에 따라 보조 집속전극(30)이 설치된다. 이 보조 집속전극(30)에는 집속전극(26)의 전자빔 통과공(26a)와 동축으로 다수의 전자빔 통과공(31)이 형성되는데, 이 전자빔 통과공(31)의 입사측은 전자빔 통과공(31)을 중심으로 하는 소정곡률 반경을 가지는 인입홈(31a)이 형성된다. 그리고 보조 집속전극에는 소정의 전압이 인가되는데, 이 전압은 집속전극(26)에 인가된 전압을 저항(R)을 통해 강하시켜 인가함이 바람직하다.The flat cathode ray tube according to the present invention includes a vacuum vessel 23 having a screen surface 22 on which a fluorescent film 21 is formed, as shown in FIG. 2, and vertical and horizontal deflections spaced apart from the release light film by a predetermined distance. Focusing electrodes 26, signal modulating electrodes 27, and control plates 24 and 25 and sequentially installed from the horizontal deflection plates 25, each having electron beam through holes 26a, 27a and 28a formed thereon. And an electrode 28 and a line cathode 29 disposed adjacent to the control electrode 28, wherein the auxiliary focus is between the focusing electrode 26 and the horizontal deflection plate 25 according to the characteristics of the present invention. The electrode 30 is provided. In the auxiliary focusing electrode 30, a plurality of electron beam passing holes 31 are formed coaxially with the electron beam passing holes 26 a of the focusing electrodes 26, and the incident side of the electron beam passing holes 31 is the electron beam passing holes 31. An inlet groove 31a having a predetermined radius of curvature around the center is formed. A predetermined voltage is applied to the auxiliary focusing electrode, which is preferably applied by dropping the voltage applied to the focusing electrode 26 through the resistor R. FIG.

이와같이 구성된 본 발명에 따른 평판형 음극선관의 작용을 설명하면 다음과 같다.Referring to the operation of the plate-shaped cathode ray tube according to the present invention configured as described above are as follows.

본 발명에 따른 평판형 음극선관(20)은 라인 캐소오드(19)에 소정의 전압이 인가됨에 따라 이로부터 열전자 즉, 전자빔이 방출되고 이 방출된 전자빔은 가속전극(도시되지 않음)에 의해 가속된 후 제어전극(28) 및 신호변조전극(27)에 의해 선택적으로 제어된 후 집속전극(26)과 보조 집속전극(30)에 의해 집속된다.In the planar cathode ray tube 20 according to the present invention, when a predetermined voltage is applied to the line cathode 19, hot electrons, that is, electron beams, are emitted therefrom, and the emitted electron beams are accelerated by an acceleration electrode (not shown). And then selectively controlled by the control electrode 28 and the signal modulating electrode 27 and then focused by the focusing electrode 26 and the auxiliary focusing electrode 30.

집속전극(26)과 보조집속전극(30)에 의한 전자빔의 집속은 제3도에 도시된 바와같이 보조집속전극(30)에 집속전극(26)인가전압이 저항(R)에 의해 강하된 전압이 인가되게 되므로 이들 전자빔 통과공(26a)(31) 사이에는 전위차에 의한 집속렌즈가 형성되어 이를 통과하는 전자빔은 집속되게 되고, 집속된 전자빔은 수평 및 수직편향판(25)(24)에 의해 편향되어 형광막(11)에 랜딩됨으로써 화상을 형성하게 된다. 이때 형광막(21)에 랜딩되어 형광막을 여기시키는 전자빔의 스포트는 집속전극(26)과 보조집속전극(30)사이에 형성된 집속렌즈에 의해 전자빔이 집속된것이므로 그 크기를 줄일 수 있다.The concentration of the electron beam by the focusing electrode 26 and the auxiliary focusing electrode 30 is a voltage at which the voltage applied to the focusing electrode 26 is lowered by the resistor R as shown in FIG. 3. Since the focusing lens is formed between the electron beam passing holes 26a and 31 by the potential difference, the electron beam passing through the electron beam is focused, and the focused electron beam is moved by the horizontal and vertical deflection plates 25 and 24. It is deflected and landed on the fluorescent film 11 to form an image. At this time, the spot of the electron beam landing on the fluorescent film 21 to excite the fluorescent film is focused on the electron beam by a focusing lens formed between the focusing electrode 26 and the auxiliary focusing electrode 30, so that its size can be reduced.

따라서 전자빔에 의해 형광막이 여기됨으로써 형성되는 화상의 해상도를 향상시킬 수 있다.Therefore, the resolution of the image formed by excitation of the fluorescent film by the electron beam can be improved.

이와같이 본 발명 편판형 음극선관은 집속전극을 복수개 설치하여 전자빔을 다단 집속함으로써 그 크기가 커짐으로써 발생되는 전자빔 스포트가 커지는 것을 방지할 수 있는 이점이 있다.As described above, the plate-shaped cathode ray tube of the present invention has an advantage of preventing the electron beam spot generated by increasing its size by providing a plurality of focusing electrodes to focus the electron beam in multiple stages.

Claims (3)

라인 캐소오드와, 라인 캐소오드로부터 순차적으로 설치되며 다수의 전자빔 통과공이 형성된 제어전극, 신호 변조전극 및 집속전극을 구비하여된 평판형 음극선관에 있어서, 집속전극의 전자빔 출사측과 소정간격 이격되게 설치되며 다수의 전자빔통과공이 형성된 보조 집속전극이 구비되어 구성된 것을 특징으로 하는 평판형 음극선관.In a flat cathode tube having a line cathode and a control electrode, a signal modulation electrode, and a focusing electrode, which are sequentially installed from the line cathode and formed with a plurality of electron beam passing holes, spaced apart from the electron beam exit side of the focusing electrode by a predetermined distance. The flat cathode ray tube, characterized in that the auxiliary focusing electrode is provided and provided with a plurality of electron beam through holes formed. 제1항에 있어서, 상기 집속전극에 인가된 전압이 저항에 의해 강하되어 보조집속전극에 인가되는 것을 특징으로 하는 평판형 음극선관.The flat cathode ray tube of claim 1, wherein the voltage applied to the focusing electrode is dropped by a resistance and applied to the auxiliary focusing electrode. 제1항에 있어서, 상기 보조 집속전극에 형성된 전자빔 통과공의 입사측에 전자빔 통과공의 중심축을 중심으로하는 소정 곡률반경의 인입홈이 형성된 것을 특징으로 하는 평판형 음극선관.The flat cathode ray tube according to claim 1, wherein an inlet groove having a predetermined radius of curvature is formed at the incidence side of the electron beam through hole formed in the auxiliary focusing electrode.
KR1019930026181A 1993-11-30 1993-11-30 Flat crt KR100201126B1 (en)

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KR100201126B1 true KR100201126B1 (en) 1999-07-01

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100600892B1 (en) * 2001-07-23 2006-07-14 엘지.필립스 디스플레이 주식회사 Cathode-ray Tube

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100600892B1 (en) * 2001-07-23 2006-07-14 엘지.필립스 디스플레이 주식회사 Cathode-ray Tube

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