投影管用高亮度高分辨率三英寸YAG荧光屏  

High Luminance and High Resolution Yttrium Aluminum Garnet Phosphor Screens Used in Projection Cathode Ray Tubes

作　　者：王琼华[1] 成建波[1] 

机构地区：[1]电子科技大学光电子技术系,成都610054

出　　处：《真空科学与技术》2000年第3期155-157,共3页Vacuum Science and Technology

基　　金：国家"九五"重大科研项目

摘　　要：介绍一种用于投影管的新型YAG荧光屏。该屏的对角线尺寸为 3英寸 ,是采用离心沉淀法将荧光粉沉积在单晶YAG衬底上制作而成。YAG衬底具有热导率较高、熔点较高、透明度好和机械强度好 (相对于传统玻璃衬底 )等性能 ,因而采用该YAG荧光屏可实现高亮度、高分辨率、高对比度的大屏幕投影电视图像显示。在 0 5mA阴极电流下 ,3英寸YAG荧光屏5 0 %光斑尺寸仅 85 μm ,在 1 0mA阴极电流和 2 9kV阳极电压下 ,红、绿、蓝的亮度分别为 6 2× 10 4,1 4× 10 5 ,8 3× 10 3cd/m2 。A new kind of yttrium aluminum garnet (YAG) phosphor screen has been successfully developed for the projection cathode ray tube (CRT) by depositing phosphor powder on YAG faceplate with centrifugal sedimentation technique.Very high luminance,high resolution,and better contrast,which meet the stringent requirements of large screen projection display,can be achieved because YAG faceplate has higher heat conductivity than conventional glass faceplate.The half intensity line width of the 3 inch YAG phosphor screen can be 85 μm at a cathode current of 0 5 mA.The red,green and blue YAG phosphor screens reach the luminance of 6 2×10 4,1 4×10 5 and 8 3×10 3 cd/m 2 at a current of 1 0 mA and an anode voltage of 29 kV,respectively.

关 键 词：钇铝石榴石 投影CRT 荧光屏 结构 性能 制作 

分 类 号：TN141.3[电子电信—物理电子学]