Invention Grant
- Patent Title: Display device
- Patent Title (中): 显示设备
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Application No.: US11964564Application Date: 2007-12-26
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Publication No.: US08643635B2Publication Date: 2014-02-04
- Inventor: Ryo Arasawa , Hiroyuki Miyake
- Applicant: Ryo Arasawa , Hiroyuki Miyake
- Applicant Address: JP Atsugi-shi, Kanagawa-ken
- Assignee: Semiconductor Energy Laboratory Co., Ltd.
- Current Assignee: Semiconductor Energy Laboratory Co., Ltd.
- Current Assignee Address: JP Atsugi-shi, Kanagawa-ken
- Agency: Fish & Richardson P.C.
- Priority: JP2006-353029 20061227
- Main IPC: G09G5/00
- IPC: G09G5/00

Abstract:
A display device is driven through no wire cable such as an FPC, and a display image is continuously held for a certain period of time by storing an image signal received from a wireless communication device so that the display image can be held even when the display device is out of communication range with the wireless communication device. A display device includes at least a pixel circuit having an SRAM (static random access memory) circuit, a circuit which controls the pixel circuit, an antenna circuit, a circuit which generates a demodulation signal, a circuit which rectifies a wireless signal, a circuit which generates first voltage, a charge circuit which stores second voltage, a charge control circuit, a voltage supply control circuit, and a circuit which controls the charge control circuit and the voltage supply control circuit.
Public/Granted literature
- US20080211800A1 DISPLAY DEVICE Public/Granted day:2008-09-04
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