CRT display device having discharge current limiting resistors in high-voltage supply lines
AssigneeSony Corporation
InventorsSatoshi Oosuga, Hiroaki Kikuchi, Yuusuke Kawamura
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Abstract
Discharge current limiting resistors are provided in respective high-voltage supply lines for distributing high voltages produced by a high-voltage distributor to the anodes of respective CRTs. As a result, a discharge current coming from a high-voltage capacitor that is part of a total discharge current flowing into a CRT where an abnormal discharge has occurred can be reduced to ½ of that in the conventional case and discharge currents coming from coating capacitances of the remaining CRTs that is another part of the total discharge current can be inhibited.
Claims16
A CRT display device comprising:
- high-voltage generating means for generating high-voltage pulses;
- high-voltage distributing means for converting the high-voltage pulses to a high voltage having a prescribed voltage value and for distributing the high voltage;
- a high-voltage supply line including a discharge current limiting resistor, wherein the high-voltage supply line extends from within the high-voltage distributing means to an anode;
- and
- a CRT supplied with the high voltage at the anode thereof via the high-voltage supply line.
A CRT display device comprising:
- a CRT including an anode;
- high-voltage generating means for generating high-voltage pulses;
- high-voltage distributing means for converting the high-voltage pulses to a high voltage, and for distributing the high voltage to the anode of the CRT;
- and
- a discharge current limiting resistor, disposed between the high-voltage distributing means atd the CRT's anode, that limits a discharge current in the CRT throughout a period during which an abnormal discharge occurs in the CRT.
Dependencies are inferred from the claim text.