FR型(反射腔式)半导体数字管

• 出 处: 发光与显示
• 发表日期: 2004年期
• 关键词: 腔式 半导体 FR 光刻法 管芯 小数点 均匀性 批量 一致性 扁平型

最近广东省佛山市光电器材厂研制成功了FR型(反射腔式)半导体数字管,并开始批量投入生产。过去,国内半导体数字管多采用扁平型封装,数字每段由光刻法刻出四个并联的二极管芯。一个数字管七段连小数点共要29个管芯,功耗大(每段工作电流为20mA),视感面积狭小,工艺上均匀性、一致性控制很困难,成品率低,成本昂贵。因此,没有多大的实用价值,面临淘汰的局面。

Recently, Foshan City, Guangdong Province Optoelectronic Equipment Factory successfully developed a FR (Reflective Cavity) semiconductor digital tube, and began mass production. In the past, the domestic semiconductor digital tube flat multi-use package, the number of each section by photolithography four parallel diode core. A digital tube seven segments with a total of 29 to die, power consumption (each section of the current 20mA), the visual area of ​​small, uniform process, the consistency of control is very difficult, low yield, high cost. Therefore, there is not much practical value, facing the situation of elimination.