Abstract An electron gun assembly for color cathode-ray tube comprising three electron guns which are arranged approximately parallel in the same plane and each of which includes a heater, a cathode and a plurality of electrodes, and at least one connection member to which the heaters are connected at substantially equal intervals, wherein the area of the connection member portion to which the heater belonging to the central electron gun is connected is made larger than that of each of the areas of the connection member portions to which the other heaters are connected, so that the temperatures of the cathodes of the three electron guns are made substantially the same during activation step and operation thereof.
An electron gun assembly for a color cathode-ray tube comprising three electron guns which are arranged approximately parallel in the same plane and each of which includes a heater, a cathode and a plurality of electrodes, at least one connection member to which the respective heaters are connected at substantially equal intervals, wherein the area of the connection member portion to which the heater belonging to the central one of the electron gun is connected is made larger than that of each of the areas of the connection member portions to which the heaters belonging to the other electron guns are connected, the area of the connection member portion to which the heater belonging to the central electron gun is connected being selected so as to maintain the rise in temperature of the cathode belonging to the central electron gun substantially the same as those of the cathodes belonging to the other electron guns.
Claim 2
Dependent Claim
154 words
An electron gun assembly for a color cathode-ray tube comprising three electron guns which are arranged approximately parallel in the same plane and each of which includes a heater, a cathode and a plurality of electrodes, at least one connection member to which the respective heaters are connected at substantially equal intervals, wherein the area of the connection member portion to which the heater belonging to the central one of the electron gun is connected is made larger than that of each of the areas of the connection member portions to which the heaters belonging to the other electron guns are connected, the area of the connection member portion to which the heater belonging to the central electron gun is connected being selected so as to maintain the rise in temperature of the cathode belonging to the central electron gun substantially the same as those of the cathodes belonging to the other electron guns.