The New Brighter Mask-Focusing Picture Tube and its Peripheral System

In a color TV receiver employing a conventional shadow mask picture tube, only about a quarter of the emitted electron beams are used to energize the phosphor screen. For this reason, we have often experienced insufficient brightness with a large-screen color TV receiver. Phosphor material has been improved and the super black martix system has been devised to increase the brightness. These means, however, do not necessarily produce satisfying results. And if we want a brighter large-screen TV receiver, we must increase the high-voltage power.