KR0182350B1 - Method of removing and aging dust from an electron gun - Google Patents
Method of removing and aging dust from an electron gun Download PDFInfo
- Publication number
- KR0182350B1 KR0182350B1 KR1019940039891A KR19940039891A KR0182350B1 KR 0182350 B1 KR0182350 B1 KR 0182350B1 KR 1019940039891 A KR1019940039891 A KR 1019940039891A KR 19940039891 A KR19940039891 A KR 19940039891A KR 0182350 B1 KR0182350 B1 KR 0182350B1
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- voltage
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- electron gun
- applying
- cathode
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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
- H01J9/44—Factory adjustment of completed discharge tubes or lamps to comply with desired tolerances
- H01J9/445—Aging of tubes or lamps, e.g. by "spot knocking"
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- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Manufacture Of Electron Tubes, Discharge Lamp Vessels, Lead-In Wires, And The Like (AREA)
Abstract
본 발명은 음극선관의 전자총의 전극으로부터 이물질을 방출시키는 에이징작업 방법에 관한 것이다.The present invention relates to an aging method for releasing foreign matter from an electrode of an electron gun of a cathode ray tube.
본 발명에 따른 에이징 작업중 발생하는 제1전극(G1)으로부터의 이물질이 캐소우드전극으로 흡착되어 캐소우드가 손상되는 것을 방지하기 위하여 제1전극(G10에 저전압이 인가된후 히터에 저전압(Ef)을 인가하는 것을 소정 시간동안 정지한 후 히터전압(Ef)과 제2,3전극(G2.G3)에 동시에 전압을 인가하고 이후 제1전극(G1)과 제2,3전극(G2.G3)에 교대로 저전압(EC1)과 고전압(EC2,EC3)을 인가하여서 수행되는 것을 특징으로 한다.In order to prevent foreign matters from the first electrode G1 generated during the aging operation according to the present invention adsorbed to the cathode and damaging the cathode, the low voltage Ef is applied to the heater after the low voltage is applied to the first electrode G10. After stopping the application for a predetermined time, the voltage is simultaneously applied to the heater voltage Ef and the second and third electrodes G2.G3, and then the first electrode G1 and the second and third electrodes G2.G3. Alternately it is performed by applying the low voltage (EC1) and high voltage (EC2, EC3).
Description
제1도는 종래의 기술에 따른 전자총의 이물질 방출 에이징 작업시각 전극에 인가되는 전압 파형도.1 is a voltage waveform diagram applied to a foreign matter emission aging working time electrode of an electron gun according to the related art.
제2도는 본 발명의 기술에 따른 전자총의 이물질 방출 에이징 작업시 각 전극에 인가되는 전압 파형도.2 is a voltage waveform diagram applied to each electrode during the foreign matter emission aging operation of the electron gun according to the technique of the present invention.
* 도면의 주요부분에 대한 부호의 설명* Explanation of symbols for main parts of the drawings
G1,G2,G3 : 제 1,2,3 전극 Ef : 히터전압G1, G2, G3: 1,2,3 electrode Ef: heater voltage
EC1 : 저전압 EC2,EC3 : 고전압EC1: Low Voltage EC2, EC3: High Voltage
본 발명은 전자총의 이물질 방출 에이징 작업 방법에 관한 것으로 특히 에이징 작업중 캐소우드의 손상발생요인을 제거하는데 적당하도록한 전압인가 방법에 관한 것이다.BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for aging foreign substance emission aging of an electron gun, and more particularly to a method for applying a voltage suitable for eliminating damage factors of a cathode during an aging operation.
음극선관 제조시 전자총을 장착한 후 전자총의 전극에 묻어있는 이물질 및 개스성분을 방출시켜 제거함으로서 음극선관의 정상동작시 스파크의 발생에 의한 전자총의 손상을 방지하도록 사전에 전극에 전압을 인가하는 에이징(aging) 작업을 수행하게 된다.Aging is applied to the electrode in advance to prevent damage to the electron gun due to sparks during normal operation of the cathode ray tube by removing and removing foreign substances and gaseous components on the electrode of the electron gun after mounting the electron gun in manufacturing the cathode ray tube. (aging) will be performed.
종래의 기술에 따른 에이징작업은 전자총의 저전극에 해당하는 히터에 전압(EF)을 계속적으로 인가하면서 제1전극(G1)에 일정주기(T1-T2, T3-T4) 동안 저전압(EC1)을 인가하는 동시에 제1전극(G1) 전압이 인가되지 않는 주기동안 (T2-T3, T4 -T5) 제2,3전극(G2,G3)에 고전압(EC2,EC3)을 인가하여 각 전극에 묻어있는 이물질과 개스성분을 방출시켜 게터 프레싱에 의해 제거함으로서 전자총의 내부에서 발생할 수 있는 스파크의 발생요인을 제거한다.In the aging operation according to the related art, the low voltage EC1 is applied to the first electrode G1 for a predetermined period T1-T2 and T3-T4 while continuously applying the voltage EF to the heater corresponding to the low electrode of the electron gun. At the same time, the high voltages EC2 and EC3 are applied to the second and third electrodes G2 and G3 during the period in which the voltage of the first electrode G1 is not applied (T2-T3, T4-T5). By removing foreign substances and gas components by getter pressing, the cause of sparks that may occur inside the electron gun is eliminated.
그러나 종래의 기술에 의한 에이지작업중 제1전극(G1)에 저전압(EG1)인가를 중단하는 시점에서However, at the time when the application of the low voltage EG1 to the first electrode G1 is stopped during the age operation according to the conventional art.
제2,3전극(G2,G3)에 고전압(EC2,EC3)을 인가함으로서 제1전극(G1)에 부착된 이물질이 캐소우드측으로 이동하여 캐소우드에 부착됨으로서 차후에 전압인가시 캐소우드를 손상치켜 전자총의 불량을 초래하는 문제점이 있었다.By applying high voltages EC2 and EC3 to the second and third electrodes G2 and G3, foreign matter attached to the first electrode G1 moves to the cathode and adheres to the cathode, thereby damaging the cathode when voltage is applied later. There was a problem that caused a defect of the electron gun.
상술한 종래 기술의 문제점을 해결하기 위한 본 발명은 전자총의 이물질 방출 에이징작업중 저전극으로 부터 방출되는 이물질이 캐소우드측에 흡착되는 것을 방지하는 에이징작업 방법을 제공하는데 있다.The present invention for solving the above-mentioned problems of the prior art is to provide an aging operation method for preventing the foreign substances emitted from the low electrode to be adsorbed on the cathode side during the foreign substance emission aging operation of the electron gun.
상기 목적을 달성하기 위한 본 발명은 히터에 소정의 시간동안 (T1a)히터 전압(EF)을 인가하는 동시에 제1전극(G1)에 일정주기(T1-T1a)동안 저전압(EC1)을 인가하는 제1단계, 소정의 시간동안(T1a-T1) 모든 전극에 전압을 인가하지 않는 제2단계, 상기 제2단계 후 캐소우드에 연속적으로 히터전압(EF)을 인가하고 소정시간동안(T2-T3) 제2,3전극(G2,G3)에 고전압(Ec2,Ec3)을 인가하는 제3단계, 제3단계 후 소정의 시간동안(T3-T4) 제1전극(G1)에 저전압(EC1)을 인가하는 제4단계, 제4단계후 제2,3전극(G2,G3)에 고전압(EC2,EC3))을 인가하는 제5단계로 수행됨을 특징으로 한다.According to the present invention for achieving the above object, the present invention applies a heater voltage EF to the heater for a predetermined time and simultaneously applies a low voltage EC1 to the first electrode G1 for a predetermined period T1 to T1a. In step 1, a second step of not applying voltage to all electrodes for a predetermined time (T1a-T1), and after the second step, the heater voltage EF is continuously applied to the cathode and for a predetermined time (T2-T3) A third step of applying the high voltages Ec2 and Ec3 to the second and third electrodes G2 and G3 and a low voltage EC1 to the first electrode G1 for a predetermined time (T3-T4) after the third step. The fourth step and the fourth step after the fourth step is characterized in that the fifth step of applying a high voltage (EC2, EC3) to the second and third electrodes (G2, G3).
이하 본 발명의 실시예를 첨부된 도면을 참조하여 상세히 설명한다.Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.
제2도는 본 발명에 따른 전압인가 파형도를 나타낸 것으로 전자총의 전극에 묻어있는 이물질과 개스를 방출시키기 위한 작업시 캐소우드전극에 계속적으로 전압을 인가하는 동시에 먼저 제1전극(G1)에 전압을 인가한 후 제2,3전극(G2,G3)에 고전압(EC2,EC3)을 인가하게 되면 제1전극(G1)에 묻어 있는 이물질이 캐소우드 전극측으로 흡수되어 차후에 캐소우드전극을 손상시키게 되므로 이를 방지하기 위하여 제1전극(G1)에 저전압(EC1) 인가를 끝나는 시점에서 히터에 전압(EF)을 소정시간동안 (T1-T1a) 인가하지 않음으로서 제2,3전극(G2,G3)에 고전압(EC2,EC3)이 인가될 때 제1전극(G1)으로부터 캐소우드측으로의 이물질이 이동하는 현상을 방지할 수 있다.FIG. 2 is a waveform diagram of voltage application according to the present invention, in which a voltage is continuously applied to the first electrode G1 while continuously applying a voltage to the cathode electrode during the operation for releasing foreign substances and gas from the electrode of the electron gun. When the high voltages EC2 and EC3 are applied to the second and third electrodes G2 and G3 after application, foreign matter buried in the first electrode G1 is absorbed to the cathode electrode side, which damages the cathode electrode later. To prevent this, when the low voltage EC1 is applied to the first electrode G1, the voltage EF is not applied to the heater for a predetermined time (T1-T1a), so that the high voltage is applied to the second and third electrodes G2 and G3. When the (EC2, EC3) is applied, it is possible to prevent the foreign matter from the first electrode (G1) to the cathode side to move.
이와같이 캐소우드 전압인가를 일정시간동안 중지한 후 제2,3전극(G2,G3)과 제1전극(G1)에 일정주기로 고전압을 교대로 소정의 시가동안 인가하여 전자총의 각 전극에 묻어있는 이 물질과 개스성분을 전극으로 부터 방출시켜 전극에 묻어있는 이물질을 완전히 제거함으로써 전자총에 고전압 인가시 스파크의 발생요인을 제거한다.In this manner, the application of the cathode voltage is stopped for a predetermined time, and then a high voltage is applied to the second and third electrodes G2 and G3 and the first electrode G1 at regular intervals alternately for a predetermined time period, so that they are buried in each electrode of the electron gun. It removes the cause of spark when high voltage is applied to the electron gun by completely removing foreign substances on the electrode by emitting the substance and gas component from the electrode.
Claims (2)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1019940039891A KR0182350B1 (en) | 1994-12-30 | 1994-12-30 | Method of removing and aging dust from an electron gun |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1019940039891A KR0182350B1 (en) | 1994-12-30 | 1994-12-30 | Method of removing and aging dust from an electron gun |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| KR960025919A KR960025919A (en) | 1996-07-20 |
| KR0182350B1 true KR0182350B1 (en) | 1999-03-20 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| KR1019940039891A KR0182350B1 (en) | 1994-12-30 | 1994-12-30 | Method of removing and aging dust from an electron gun |
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| Country | Link |
|---|---|
| KR (1) | KR0182350B1 (en) |
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1994
- 1994-12-30 KR KR1019940039891A patent/KR0182350B1/en not_active IP Right Cessation
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| Publication number | Publication date |
|---|---|
| KR960025919A (en) | 1996-07-20 |
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