发明名称 |
Level shifter |
摘要 |
A level shifter that accommodates lower driving voltage of a driver circuit and has a sufficient capability of converting the amplitude of an input signal even when the voltage amplitude of the input signal is low is provided. A level shifter utilizing a current mirror circuit 150 and a differential circuit 160 is used in a portion for converting the voltage amplitude of the signal. Since the potential difference of a signal input through transistors 105 and 106 to the differential circuit 120 is amplified and outputted, the voltage amplitude can be normally converted without influence of the threshold of a transistor even when the voltage amplitude of the input signal is low.
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申请公布号 |
US2002008689(A1) |
申请公布日期 |
2002.01.24 |
申请号 |
US20010891560 |
申请日期 |
2001.06.26 |
申请人 |
SEMICONDUCTOR ENERGY LABORATORY CO., LTD. |
发明人 |
KOYAMA JUN;AZAMI MUNEHIRO;SHIONOIRI YUTAKA;ATSUMI TOMOAKI |
分类号 |
G09G3/36;G09G3/32;H03K19/0185;(IPC1-7):G09G3/36 |
主分类号 |
G09G3/36 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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