发明名称 |
Power supply circuit, operational amplifier circuit, liquid crystal device and electronic instrument |
摘要 |
Disclosed are a power supply circuit which can cope with a multipotential level design and is suitable for generating potentials for driving a liquid crystal, and a liquid crystal device and an electronic instrument which use the power supply circuit. A first step-up circuit in the power supply circuit generates a first stepped-up potential level obtained by stepping up a power-supply level with a ground level taken as a reference. A regulator circuit generates a center potential obtained by regulating the first stepped-up potential level by referring to a reference potential level with the ground level taken as a reference. A second step-up circuit generates a second stepped-up potential level obtained by stepping up the center potential with the ground level taken as a reference. A multipotential generating circuit generates a plurality of potential levels from a difference between the second stepped-up potential level and the center potential with the ground level taken as a reference, and supplies those potential levels to the panel of the liquid crystal device that is driven by an MLS driving scheme.
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申请公布号 |
US2002105510(A1) |
申请公布日期 |
2002.08.08 |
申请号 |
US20010990297 |
申请日期 |
2001.11.23 |
申请人 |
SEIKO EPSON CORPORATION |
发明人 |
TSUCHIYA MASAHIKO |
分类号 |
G02F1/133;G09G3/20;G09G3/36;H01L21/822;H01L27/04;(IPC1-7):G09G5/00 |
主分类号 |
G02F1/133 |
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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