公开(公告)号：US11868190B2

公开(公告)日：2024-01-09

申请号：US17630268

申请日：2019-07-31

申请人： Sharp NEC Display Solutions, Ltd.

发明人： Akira Shinoda

IPC分类号： G06F1/26 ,  G06F13/38 ,  G06F1/28 ,  G06F1/3234 ,  G06F11/30 ,  G06F11/32 ,  G06F1/3218

CPC分类号： G06F1/266 ,  G06F1/28 ,  G06F1/3218 ,  G06F1/3265 ,  G06F11/3055 ,  G06F11/325 ,  G06F13/382 ,  G06F2213/0042

摘要： One aspect of a display device of the present invention is a display device having a liquid crystal panel and a power lamp. The display device includes: a control unit that controls a display of the liquid crystal panel based on a power supplied from an external device and controls a lighting of the power lamp based on a reference voltage; a first switch that supplies, the power to the control unit, the power being supplied from the external device via a predetermined connector; a voltage detection circuit that generates the reference voltage; a second switch that supplies the reference voltage to the power lamp and the control unit; and a second control unit that determines whether or not the power meets a condition for establishing negotiation with the external device, and turns on one of the first switch and the second switch according to a result of the determination.