Super-flat color picture tube

摘要

We have developed a 76 cm (16:9) super-flat color picture tube (CPT). This flat-face CPT has been realized by using a press-formed shadow mask and a glass panel having a flat outside surface and basically cylindrical curved inside. The use ofMicrofilter technology has made it possible to adopt high-transmission glass while minimizing changes in brightness. Armored glass is used for the face panel. This panel design offers advantages in terms of the strength of the bulb. The horizontalpitch variation between the center and periphery is reduced by 10% compared with conventional tubes.