| 摘要 |
A color picture tube has: an envelope; a phosphor screen formed on the inner surface of the envelope; a shadow mask which is disposed in the envelope and in a vicinity of the phosphor screen and which has a main surface portion with a number of apertures; and an electron gun for emitting electron beams which are selectively transmitted through the apertures and are bombarded on the phosphor screen so as to emit multi-color light. A layer having a ceramic material as a major constituent is chemically bonded to that surface of the main surface portion of the shadow mask which is located at the side of the electron gun, and a conductive layer is formed on the layer. The charge-up phenomenon of the layer having a ceramic material is prevented by the conductive layer. |
