CRT having focus mask with partially conductive insulator

本发明是一种包括聚焦荫罩(25)的彩色阴极射线管(10)，聚焦荫罩具有多条间隔开的第一导电线束(40)。各第一导电线束均具有形成在其朝向屏幕的一侧上的基本上连续的绝缘材料层(62)，该绝缘材料层是部分导电或轻微导电的，其程度足以防止显著的电荷积累。多条第二导线(60)基本上垂直于多条第一导电线束而定位，并通过绝缘材料层与之粘合。 A color cathode-ray tube has an evacuated envelope with an electron gun therein for generating an electron beam. The envelope further includes a faceplate panel having a luminescent screen with phosphor elements on an interior surface thereof. A focus mask, having a plurality of spaced-apart first conductive strands, is located adjacent to an effective picture area of the screen. The spacing between the first conductive strands defines a plurality of apertures substantially parallel to the phosphor elements on the screen. Each of the first conductive strands has a substantially continuous insulating material layer formed on a screen-facing side thereof. A plurality of second conductive wires are oriented substantially perpendicular to the plurality of first conductive strands and are bonded thereto by the insulating material layer. The insulating material layer is partially or slightly conductive to an extent sufficient to prevent an accumulation of a significant electrical charge.