Invention Grant
- Patent Title: Display device for varying the driving frequency of a backlight and driving method thereof
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Application No.: US14894468Application Date: 2013-05-29
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Publication No.: US09786231B2Publication Date: 2017-10-10
- Inventor: Katsuyuki Matsui
- Applicant: NEC Display Solutions, Ltd.
- Applicant Address: JP Tokyo
- Assignee: NEC DISPLAY SOLUTIONS, LTD.
- Current Assignee: NEC DISPLAY SOLUTIONS, LTD.
- Current Assignee Address: JP Tokyo
- Agency: McGinn IP Law Group, PLLC
- International Application: PCT/JP2013/064917 WO 20130529
- International Announcement: WO2014/192099 WO 20141204
- Main IPC: G09G3/36
- IPC: G09G3/36 ; G09G3/34 ; H05B33/08 ; G09G3/32
Abstract:
A display device includes a drive control unit that changes a frequency of a drive signal based on a brightness of a light source of a backlight when a duty ratio of the drive signal is in a first range or is in a third range, the drive signal being a pulse signal for driving the light source. The drive control unit fixes the frequency of the drive signal to a predetermined frequency when the duty ratio of the drive signal is in a second range.
Public/Granted literature
- US20160117997A1 DISPLAY DEVICE, AND DISPLAY DEVICE CONTROL METHOD Public/Granted day:2016-04-28
Information query
IPC分类:
