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1. (WO2013121707) DISPLAY DEVICE AND DISPLAY METHOD

Pub. No.:    WO/2013/121707    International Application No.:    PCT/JP2013/000424
Publication Date: Fri Aug 23 01:59:59 CEST 2013 International Filing Date: Tue Jan 29 00:59:59 CET 2013
IPC: G09G 3/36
G02F 1/133
G09G 3/20
G09G 3/34
Applicants: PANASONIC CORPORATION
パナソニック株式会社
Inventors: NAKANISHI, Atsushi
中西 敦士
Title: DISPLAY DEVICE AND DISPLAY METHOD
Abstract:
A display device is provided with: a display panel (11) which is virtually divided into a plurality of divided sections and displays an image based on a video signal; a backlight unit (12) which has a plurality of light sources (22) disposed corresponding to the plurality of divided sections; an index value computation unit (13) which computes an index value for determining the brightness of the plurality of light sources (22) for each divided section on the basis of the signal level of the video signal; a brightness determination unit (14) which respectively determines the brightness of the plurality of light sources (22) for each divided section on the basis of the index value; and a backlight drive unit (15) which drives the plurality of light sources (22) to emit light with the brightness determined by the brightness determination unit (14) for each divided section. The index value computation unit (13) computes an index value with the degree of the effect, on the magnitude of the index value, of the level of the video signal corresponding to a pixel disposed in the periphery of the divided section made smaller than the degree of the effect of the level of the video signal corresponding to a pixel disposed in the central portion of the divided section.