Invention Grant
- Patent Title: Display device and display device drive method
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Application No.: US14697820Application Date: 2015-04-28
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Publication No.: US09830867B2Publication Date: 2017-11-28
- Inventor: Naoyuki Takasaki , Tsutomu Harada , Susumu Kimura
- Applicant: Japan Display Inc.
- Applicant Address: JP Tokyo
- Assignee: Japan Display Inc.
- Current Assignee: Japan Display Inc.
- Current Assignee Address: JP Tokyo
- Agency: K&L Gates LLP
- Priority: JP2014-093368 20140430
- Main IPC: G09G3/34
- IPC: G09G3/34

Abstract:
A display device includes an image display panel whose display is controlled by an image signal, a backlight which includes light sources and lights the image display panel from behind, and a display control section which calculates, based on the image signal, the required luminance value of the backlight for each divided area of the image display panel, calculates a tentative lighting level of each light source based on luminance distribution information for the backlight stored previously and the required luminance values, sets the lighting level of a first light source whose tentative lighting level exceeds an upper limit to the upper limit, determines the lighting level of a second light source whose tentative lighting level does not exceed the upper limit, based on the lighting level of the first light source, luminance distribution information, and required luminance value, and controls the backlight by the lighting levels.
Public/Granted literature
- US20150317934A1 DISPLAY DEVICE AND DISPLAY DEVICE DRIVE METHOD Public/Granted day:2015-11-05
Information query
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