TH8509B - "Method for spot-knocking electron gun series of cathode ray tubes" - Google Patents

Abstract

in the Spot-Nocking operation for cathode ray tubes. Discharge gap (50) for supplying high voltage pulses. To the medium voltage (15,17) electrode of the electron gun is arranged on the outside of the cathode ray tube (10). The high voltage is supplied to the medium voltage (15,17) electrode by Using the discharge that occurs in the discharge gap (50), the spot-noking operation defect for the cathode ray tube can be corrected.

Claims (7)

1. Method for the spot-knocking electron gun set of cathode ray tubes (10), including enclosures with neck sections. And the electron gun with the low-voltage electrode (14,16) was maintained at low voltage when the cathode ray tube (10) was driven, the high-voltage electrode (18) was treated. At the pressure High electricity when the cathode ray tube is driven And medium voltage electrodes (15,17) maintained at medium voltage. Between low voltage and high voltage When the cathode ray tubes (10) are driven, the method is unique, consisting of a procedure. Connecting high voltage electrodes (18) and medium voltage electrodes (15,17) through the discharge gap. (50) and connecting the medium voltage electrode (15,17) and an electrically low-voltage (14,16) electrode on the outside of the cathode ray tube (10) distribution of high-voltage pulses across the high-voltage electrode. (18) and low-voltage electrodes (14,16), whereby it causes a charge between electrodes. High voltage (18) and low voltage electrodes (14,16) and later cause a discharge in the discharge gap (50) and discharge of high voltage pulses across the electrodes. Medium voltage electrode (15,17) and low voltage electrode (14,16) using the discharge that occurs in the discharge gap (50), whereby it induces a discharge between the medium voltage electrode (15,17) and the voltage electrode. Low Electricity (14,16) 2. The method according to claim 1 has a unique feature that A high voltage resistor (28), where the discharge current of the discharge occurring in the discharge gap, flows through it, is provided between the medium voltage electrode (15,17) and the electrode. Low Voltage Electrodes (14,16) 3. The method according to claim 1 has the characteristic that the initial discharge voltage of the discharge gap (50) is set in the range of 30 to 60 kV. 4.Spot-knocking method for cathode ray tubes (10) including enclosures with neck. And an electron gun with a low voltage (14,16) electrode that was maintained at low voltage. When the cathode ray tube is driven A high voltage electrode (18) that was maintained at high voltage when the cathode ray tube (10) was driven. And medium voltage (15,17) electrodes maintained at medium voltage between low voltage and high voltage. When the cathode ray tubes (10) are driven, the method is unique, consisting of a procedure. Welding of high voltage electrodes (18) and medium voltage electrodes (15,17) through the first discharge gap (50) and medium voltage electrode connections. (15,17) and low voltage electrode (14,16) through the second discharge gap. (55) on the outside of the cathode ray tube Dispensing high voltage pulses across high-voltage electrodes (18) and low-voltage electrodes (14,16), whereby a discharge is produced between the electrodes. High voltage (18) and low voltage electrodes (14,16), and then induce discharge in the first and second discharge gap (50,55) and voltage pulse discharge. High through cross-medium voltage electrodes (15,17) and low-voltage electrodes (14,16) using the discharges occurring in the discharge gap. (50,55) whereby it induces a discharge between the medium voltage electrode (15,17) and the low voltage electrode (14,16). 5. The method according to claim 1 or 4 has a unique characteristic that Cathode ray tubes, including input terminals The high voltage electrode is connected, the high voltage electrode (18) and the high voltage pulses are supplied across the high voltage electrode. And electrode Low voltage (14,16) through the high voltage input terminal. 6. The method according to claim 1 or 4 has the characteristic that high voltages of 60 kV or more are supplied through the high voltage electrode (18) and the electrode. Low voltage (14,16) 7. The method according to claim 4 has a unique feature that The voltage begins to discharge the charge of the first discharge gap. (50) is set in the range of 30 to 60 kV.