KR930001212Y1 - Electron gun of color picture tube - Google Patents
Electron gun of color picture tube Download PDFInfo
- Publication number
- KR930001212Y1 KR930001212Y1 KR2019900017006U KR900017006U KR930001212Y1 KR 930001212 Y1 KR930001212 Y1 KR 930001212Y1 KR 2019900017006 U KR2019900017006 U KR 2019900017006U KR 900017006 U KR900017006 U KR 900017006U KR 930001212 Y1 KR930001212 Y1 KR 930001212Y1
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- South Korea
- Prior art keywords
- cathode
- heater
- electron gun
- electrons
- present
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Links
- 239000002184 metal Substances 0.000 claims description 12
- 230000001133 acceleration Effects 0.000 claims description 7
- 239000000758 substrate Substances 0.000 claims description 5
- 239000012212 insulator Substances 0.000 claims description 4
- 239000002784 hot electron Substances 0.000 description 4
- 238000010894 electron beam technology Methods 0.000 description 3
- 239000010410 layer Substances 0.000 description 3
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 239000002356 single layer Substances 0.000 description 2
- 230000007423 decrease Effects 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
Classifications
-
- 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
- H01J29/02—Electrodes; Screens; Mounting, supporting, spacing or insulating thereof
- H01J29/04—Cathodes
-
- 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
- H01J29/46—Arrangements of electrodes and associated parts for generating or controlling the ray or beam, e.g. electron-optical arrangement
- H01J29/48—Electron guns
- H01J29/488—Schematic arrangements of the electrodes for beam forming; Place and form of the elecrodes
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J2229/00—Details of cathode ray tubes or electron beam tubes
- H01J2229/48—Electron guns
- H01J2229/4803—Electrodes
Landscapes
- Electrodes For Cathode-Ray Tubes (AREA)
Abstract
내용 없음.No content.
Description
제1도는 종래 전자총의 단면도.1 is a cross-sectional view of a conventional electron gun.
제2도는 종래 캐소드의 구성도.2 is a configuration diagram of a conventional cathode.
제3도는 본 고안에 따른 컬러 브라운관 전자총의 단면도.3 is a cross-sectional view of a color CRT electron gun according to the present invention.
제4도(a)(b)는 본 고안에 따른 음극체의 단면도 및 히터의 구성도.Figure 4 (a) (b) is a cross-sectional view of the negative electrode body and the configuration of the heater according to the present invention.
제5도는 본 고안에 따른 음그가체의 장착 상태도이다.5 is a mounting state diagram of the negative teeth according to the present invention.
* 도면의 주요부분에 대한 부호의 설명* Explanation of symbols for main parts of the drawings
1 : 캐소드 2 : 금속캡1: cathode 2: metal cap
3 : 히터 4 : 음극체3: heater 4: cathode
5 : 절연체 6 : 절연기관5: insulator 6: insulation engine
7 : 리드선 8 : 관통구멍7: lead wire 8: through hole
본 고안은 컬러 브라운관의 전자총에 관한 것으로, 특히 전자를 방출하는 캐소드의 구조를 재선시켜 히터의 열효율을 향상시킨 컬러 브라운관의 전자총에 관한 것이다.The present invention relates to an electron gun of a color CRT, and more particularly, to an electron gun of a CRT which improves thermal efficiency of a heater by re-electing a structure of a cathode that emits electrons.
브라운관의 퍼넬데크부내에 장착되는 전자총은 형광면을 향해 전자비임을 방사하는 것으로, 그 일반적인 구조는 다음과 같다.The electron gun mounted in the funnel deck portion of the CRT emits an electron beam toward the fluorescent surface. The general structure is as follows.
즉, 전자총은 제1도에 도시된 바와같이 독립된 캐소드(21) 3개가 수평으로 구성되어(이것을 인-라인 방식이라함) 3개의 전자비임을 내도록 되어 있고, 이들 전자 비임은 상기 캐소드(21)에서 방출되는 전자량을 제어하는 제어그리드(G1), 전자를 1차로 가속시켜주는 제1가속그리드(G2), 전자를 2차로 가속시켜 주는 제2가속그리드(G3), 전자를 집속시켜주는 집속그리드(G4), 3차로 전자를 가속시켜 주는 에노드전극(G5)등을 통과하여 형광면에 투사되는바, 상기 전자총의 동작과정을 설명하면 다음과 같다.That is, as shown in FIG. 1, the electron gun is configured so that three independent cathodes 21 are configured horizontally (this is called an in-line method) to emit three electron beams, and these electron beams are the cathodes 21. Control grid (G1) to control the amount of electrons emitted from the first acceleration grid (G2) for accelerating electrons first, second acceleration grid (G3) for accelerating electrons secondly, focusing electrons Bars are projected onto the fluorescent surface through the grid G4, the anode electrode G5 which accelerates the electrons in the third order, and the operation of the electron gun is described as follows.
먼저 히터의 가열로 그 선단부에 산화물이 도포된 캐소드가 열전자를 방출하면, 이 열전자는 제어그리드(G1)에 의해서 그 양이 제어된 후, 제1가속그리드(G2)에 인가되는 플라스전압에 이끌려 제어그리드(G1)의 작은 구멍을 통해 축방향으로 가속된다. 상기 제어그리드(G1)는 캐소드보다 낮은 마이너스 전압이 걸려 있으므로, 이 전압에 의해 전자의 흐름 콘트롤해서 화면의 밝기는 상기 제어그리드에 의하여 제어된다.First, when the cathode coated with oxide emits hot electrons by heating the heater, the hot electrons are controlled by the control grid G1 and then attracted to the plasma voltage applied to the first acceleration grid G2. Accelerated in the axial direction through the small hole of the control grid (G1). Since the control grid G1 has a negative voltage lower than that of the cathode, the flow of electrons is controlled by this voltage, and the brightness of the screen is controlled by the control grid.
이와같이 상기 제1가속그리드(G2)를 통과한 전자류의 흐름은 그후 제2가속그리드(G3), 애노드전극(G5)에 의해 가속되고 이 애노드전극(G5)을 통과한 후에는 일정한 속도로 형광면에 투사된다. 이때 전자류의 흐름은 상기 가속그리드(G4,G5)가 구성하는 정전렌즈의 작용에 의해 비임의 형태로 집속되어 형광면에 도달하게 된다.As such, the flow of electrons passing through the first acceleration grid G2 is then accelerated by the second acceleration grid G3 and the anode electrode G5, and after passing through the anode electrode G5, the fluorescent surface at a constant speed. Is projected on. At this time, the flow of the electron flow is focused in the form of a beam by the action of the electrostatic lens of the acceleration grid (G4, G5) to reach the fluorescent surface.
이와같이 비임형태로 형광면에 투사되는 전자는 히터의 발열에 따라 캐소드에서 열전자 형태로 방출되는것으로서, 종래 캐소드 구조는 다음과 같다.As such, electrons projected onto the fluorescent surface in the form of a beam are emitted from the cathode in the form of hot electrons as the heater generates heat, and a conventional cathode structure is as follows.
즉, 제2도에 도시된 바와같이 종래 캐소드는 열전자를 용이하게 방출하도록 그 선단에 산화물층(22a)이 도포된 금속제의 음극캡(22)과, 이 음극캡(22)이 용착 고착되는 슬리브(29)와 이 슬리브(29)에 내설된 히터(23)및 상기 슬리브(29)를 지지하는 홀더(30)로 구성되어, 상기 슬리브(29)에 내실된 히터(29)가 발열할 때 산화물이 도포된 음극캡(22)으롸부터 전자가 방출되도록 된 구조로 되어 있으나, 상기 히터(23)의 발열은 음극캡(22)뿐만 아니라 전자의 방출과 관게없는 슬리브(29) 그리고 홀더(30)에도 인가되는 등 열효율이 지극히 낮다고하는 결점이 있다.That is, as shown in FIG. 2, the conventional cathode has a metal cathode cap 22 coated with an oxide layer 22a at its tip to easily emit hot electrons, and a sleeve on which the cathode cap 22 is welded and fixed. (29) and a heater (23) embedded in the sleeve (29) and a holder (30) for supporting the sleeve (29) so that when the heater (29) built in the sleeve (29) generates heat, Although the structure is such that electrons are emitted from the coated negative electrode cap 22, the heating of the heater 23 is not only the negative electrode cap 22 but also the sleeve 29 and the holder 30 having no relation with the emission of electrons. There is a drawback that the thermal efficiency is extremely low.
이를 해결하기 위해 종래에는 히터(23)의 용량을 높혀 사용하기도 하였으나 용량증가에 다른 부품단가 및 전력소모가 증가될 뿐만 아니라 수명이 짧아지는 등 신뢰성이 저하된다고하는 문제점이 있었다.In order to solve this problem, conventionally, the capacity of the heater 23 is increased, but there is a problem in that reliability decreases, such as an increase in other component cost and power consumption as well as a shortened life.
따라서, 본 고안은 상기 종래의 문제점을 해결하기 위하여 안출된 것으로, 본 고안의 목적은 히터의 열효율을 높힐 수 있을 뿐만 아니라 금속캡을 지지하는 슬리브 및 홀더를 제거해서 원가절감 효과를 얻을 수 있는 컬러 브라운관의 전자총을 제공하는데 있다.Therefore, the present invention was devised to solve the above-mentioned problems, and the object of the present invention is not only to improve the thermal efficiency of the heater, but also to remove the sleeve and the holder supporting the metal cap, thereby obtaining a cost reduction effect. To provide the CRT's electron gun.
상기 목적을 달성하기 위한 본 고안의 컬러 브라운관 전자총은 캐소드 및 그리드로 이루어진 컬러 브라운관의 전자총에 있어서 금속캡내에 절연체와 함께 히터를 내설된 음극체를 절연기판상에 3개 장착시켜서 캐소드를 구성하고, 이 캐소드는 제어그리드의 내주연에 장착되어 있는 것을 특징으로 한다.The color CRT tube gun of the present invention for achieving the above object is a cathode of a color CRT tube consisting of a cathode and a grid to form a cathode by mounting three cathode bodies with an insulator in a metal cap on an insulating substrate, This cathode is characterized in that it is mounted on the inner circumference of the control grid.
이하 본 고안의 작용 및 효과를 에시된 도면에 의거하여 상세히 설명한다.Hereinafter, the operation and effects of the present invention will be described in detail with reference to the accompanying drawings.
제3도는 본 고안에 다른 컬러 브라운과 전자총의 단면도이고, 제4도(a) 및 (b)는 본 고안에 따른 음극체의 단면도 및 히터의 구성도이고, 제5도는 본 고안에 따른 음극체의 장착상태도이다.3 is a cross-sectional view of a color brown and electron gun according to the present invention, and FIGS. 4 (a) and (b) are a cross-sectional view of a cathode body and a heater according to the present invention, and FIG. 5 is a cathode body according to the present invention. Figure of mounting state.
전자를 방출하는 캐소드(1)는 선단에 산화물층(2a)이 도포된 금속캡(2)과 히터(3)로 그 기본 구조를 이루고 있다. 본 고안에 따른 캐소드(1)는 상기 금속캡(2)내에 히터(3)가 설치된 음극체(4)로 그 구조를 이루되 상기히터(3)는 금속캡(2)내에 충전되는 Al2O3등의 절연체(5)에 의해 금속캡(2)과 절연되면서 그 내부에 장착되게 되며, 히터(3)의 구조는 제4도에 도시된 바와같이 코일형태의 나선형으로 형성하면서 단층구조를 이루고 있으나 도시된 바와 관계없이 굴곡되게 형성할 수도 있고 또한 단층대신 다층구조로 형성할 수도 있다. 한편 히터(3)가 내설된 구조의 상기 음극체(4)는 적,녹, 청색상별로 3개가 절연기판(6)상에 장착되어 본 고안에 따른 캐소드(1)를 구성하게 되고, 이 캐소드(1)는 전자의 방출량을 제어하는 제어그리드(G1)의 내주연에 설치되며, 상기 음극체(4)에 내설된 히터(3)의 리드선(7)은 상기 절연기판(6)을 통해 외부로 인출되어 있다.The cathode 1 emitting electrons has a basic structure consisting of a metal cap 2 and a heater 3 coated with an oxide layer 2a at the tip. The cathode 1 according to the present invention is composed of a cathode body 4 in which the heater 3 is installed in the metal cap 2, but the heater 3 is Al 2 O filled in the metal cap 2. It is insulated from the metal cap 2 by an insulator 5 such as 3 and mounted therein, and the structure of the heater 3 forms a single layer structure while forming a spiral in the form of a coil as shown in FIG. However, regardless of illustration, it may be formed to be curved, or may be formed in a multilayer structure instead of a single layer. On the other hand, the cathode body 4 having the structure in which the heater 3 is built is mounted on the insulating substrate 6 by red, green, and blue phases to form the cathode 1 according to the present invention. (1) is installed on the inner circumference of the control grid (G1) for controlling the amount of electron emission, the lead wire 7 of the heater (3) in the cathode body (4) is external through the insulating substrate (6) Is withdrawn.
상기와 같이 구성된 본 고안을 이루는 컬러 브라운관 전자총의 동작과정을 설명하면 다음과 같다.Referring to the operation process of the color CRT electron gun constituting the present invention configured as described above are as follows.
즉, 절연기판(6)하단부로 인출된 리드선(7)을 통해 외부로 부터 전류를 인가하면, 히터(3)가 발열되어 금속캡(2)의 산화물층(2a)으로부터 전자를 방출시킨다. 이때 방출되는 전자는 제어그리드(G1)에 형성된 관통구멍(8)을 통해 형광면을 향해 방사되게 된다.That is, when a current is applied from the outside through the lead wire 7 drawn to the lower end of the insulating substrate 6, the heater 3 generates heat to emit electrons from the oxide layer 2a of the metal cap 2. At this time, the emitted electrons are emitted toward the fluorescent surface through the through holes 8 formed in the control grid G1.
이와같이 본 고안의 컬러 브라운관의 전자총에 의하면 전자를 방출유도시키는 역활을 하는 히터가 금속캡내에 내설된 구조로 되어 있으므로, 금속캡에 전달되는 히터의 열효율을 증가시킬 수 있을뿐만 아니라, 히터를 지지하기 위한 별도의 지지체가 필요없으며, 또한 상기 캐소드가 제어그리드의 내주연에 장착되게 되어 종래와 같이 캐소드를 지지하기 위한 슬리브나 홀더가 필요없게 되어 원가절감 및 조립공정의 단순화를 이룰 수 있는 효과가 있다.Thus, according to the electron gun of the color CRT tube of the present invention, since the heater acting to induce electrons is built in the metal cap, it is possible to increase the thermal efficiency of the heater delivered to the metal cap and to support the heater. There is no need for a separate support, and the cathode is mounted on the inner circumference of the control grid, so that there is no need for a sleeve or a holder for supporting the cathode as in the prior art, thereby reducing costs and simplifying the assembly process. .
Claims (1)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR2019900017006U KR930001212Y1 (en) | 1990-11-07 | 1990-11-07 | Electron gun of color picture tube |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR2019900017006U KR930001212Y1 (en) | 1990-11-07 | 1990-11-07 | Electron gun of color picture tube |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| KR920010330U KR920010330U (en) | 1992-06-17 |
| KR930001212Y1 true KR930001212Y1 (en) | 1993-03-18 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| KR2019900017006U Expired - Fee Related KR930001212Y1 (en) | 1990-11-07 | 1990-11-07 | Electron gun of color picture tube |
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| Country | Link |
|---|---|
| KR (1) | KR930001212Y1 (en) |
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1990
- 1990-11-07 KR KR2019900017006U patent/KR930001212Y1/en not_active Expired - Fee Related
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| Publication number | Publication date |
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| KR920010330U (en) | 1992-06-17 |
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