公开(公告)号：US4121203A

公开(公告)日：1978-10-17

申请号：US776818

申请日：1977-03-11

申请人： Wales Dale Edwards ,  William Harold White

发明人： Wales Dale Edwards ,  William Harold White

IPC分类号： G04G9/00 ,  G04G9/12 ,  G09G3/18 ,  G02F1/13 ,  H03K1/12

CPC分类号： G04G9/0047 ,  G04G9/122 ,  G09G3/18

摘要： A liquid crystal display is multiplexed by the digit input being driven between a first and second voltage level and the segment input being driven between the second and a third voltage level. The difference between the first and third voltage level is sufficient to activate the liquid crystal device. For AC liquid crystal displays, a polarity reversal circuit, driven by a low frequency signal, is included for both the digit input and the segment input to cause the digit input to vary between the second and third voltage level while the segment input varies between the first and second voltage level.

摘要翻译： 通过在第一和第二电压电平之间驱动的数字输入和在第二和第三电压电平之间驱动的段输入来复用液晶显示器。 第一和第三电压电平之间的差异足以激活液晶装置。 对于AC液晶显示器，由数字输入和段输入包括由低频信号驱动的极性反转电路，以使数字输入在第二和第三电压电平之间变化，而段输入在 第一和第二电压电平。