| 发明名称 |
DC/DC Module of LCD Driving Circuit |
| 摘要 |
The present invention provides a DC/DC module of a LCD driving circuit. The DC/DC module comprises a buck-boost circuit, which is used to convert the input voltage of the DC/DC module into a gate off-state voltage VGL; a LDO circuit, which is connected in series to the buck-boost circuit, used to convert the input voltage of the buck-boost circuit into a lower limit output voltage VBB of a liquid crystal driver; a BUCK circuit, which is used to convert the input voltage of the DC/DC module into a operating voltage VDD of a specific IC; a charge pump circuit, which is used to convert the input voltage of the DC/DC module into a gate on-state voltage VGH; wherein, the input voltage of the DC/DC module is used directly as an upper limit output voltage VAA of the liquid crystal driver. The DC/DC module according to the present invention has simple circuit structure, low hardware cost, and high load capacity. |
| 申请公布号 |
US2014176094(A1) |
申请公布日期 |
2014.06.26 |
| 申请号 |
US201213811287 |
申请日期 |
2012.12.28 |
| 申请人 |
Yang Xueliang |
发明人 |
Yang Xueliang |
| 分类号 |
G05F1/62 |
主分类号 |
G05F1/62 |
| 代理机构 |
|
代理人 |
|
| 主权项 |
1. A DC/DC module, comprising:
a buck-boost circuit, which is used to convert the input voltage of the DC/DC module into a gate off-state voltage VGL; a LDO circuit, which is connected in series to the buck-boost circuit, used to convert the input voltage of the buck-boost circuit into a lower limit output voltage VBB of a liquid crystal driver; a BUCK circuit, which is used to convert the input voltage of the DC/DC module into a operating voltage VDD of a specific IC; a charge pump circuit, which is used to convert the input voltage of the DC/DC module into a gate on-state voltage VGH; wherein, the input voltage of the DC/DC module is used directly as an upper limit output voltage VAA of the liquid crystal driver. |
| 地址 |
Shenzhen City CN |
