发明名称 |
Power supply system for a display panel |
摘要 |
A power supply system for a display panel includes a power supply regulator that regulates a power supply voltage of a display driver of a power supply circuit connected to the display panel, and a protection circuit that protects the display driver against an overvoltage. |
申请公布号 |
US8810977(B2) |
申请公布日期 |
2014.08.19 |
申请号 |
US201213534296 |
申请日期 |
2012.06.27 |
申请人 |
Rohm Co., Ltd. |
发明人 |
Kojima Hidekazu |
分类号 |
H02H3/20 |
主分类号 |
H02H3/20 |
代理机构 |
Fish & Richardson P.C. |
代理人 |
Fish & Richardson P.C. |
主权项 |
1. A power supply system for a display panel, the power supply system comprising:
a power supply regulator configured to regulate a power supply voltage of a display driver of a power supply circuit connected to the display panel; and a protection circuit configured to protect the display driver against an overvoltage, wherein the power supply regulator has a supply terminal configured to supply the power supply regulator with a received loading current, wherein the power supply regulator comprises a transistor having a control terminal connected to a switching control circuit of the power supply circuit, a first terminal connected via a coil to the supply terminal of the power supply regulator and a second terminal to which a ground voltage is applied, and wherein the second terminal of the transistor is connected via a diode to at least one capacitor which is loaded by the loading current via the coil and the diode in response to a control signal applied to a control terminal of the transistor by the switching control circuit depending on the monitored positive power supply voltage of the display driver. |
地址 |
Kyoto JP |