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Title:
LED DISPLAY SYSTEM
Document Type and Number:
WIPO Patent Application WO/2022/074784
Kind Code:
A1
Abstract:
The purpose of the present disclosure is to provide an LED display system capable of reducing luminance variation and chromaticity variation in a display unit. The LED display system according to the present disclosure comprises a plurality of LED display devices and an LED display control device. Each LED display device comprises a first display unit having a plurality of first LEDs respectively corresponding to a plurality of BIN ranks and a second display unit having a plurality of second LEDs respectively corresponding to the same BIN ranks as the first LEDs. The LED display control device comprises: a luminance reduction characteristic calculation unit that acquires a measurement result of luminance of each second LED driven under a second driving condition that is different from that of each LED display device, and that calculates, on the basis of the measurement result of the luminance, luminance reduction characteristics for an accumulation lighting time of each second LED for each second driving condition and for each BIN rank; and a luminance correction unit that corrects the luminance of an image for each first LED on the basis of one luminance reduction characteristic among the luminance reduction characteristics and the accumulation lighting time of each first LED.

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Inventors:
KANNO NAOKI (JP)
TAGUCHI HIROKAZU (JP)
Application Number:
PCT/JP2020/038126
Publication Date:
April 14, 2022
Filing Date:
October 08, 2020
Export Citation:
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Assignee:
MITSUBISHI ELECTRIC CORP (JP)
International Classes:
G09G3/32; G09G3/20
Domestic Patent References:
WO2018179196A12018-10-04
WO2019229971A12019-12-05
WO2017061195A12017-04-13
Foreign References:
JP2017032889A2017-02-09
US20080122832A12008-05-29
JPH04128875A1992-04-30
JP2003022052A2003-01-24
JP2017032890A2017-02-09
US20110266976A12011-11-03
Attorney, Agent or Firm:
YOSHITAKE Hidetoshi et al. (JP)
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