FIELD-SEQUENTIAL IMAGE DISPLAY DEVICE AND IMAGE DISPLAY METHOD

Title:

FIELD-SEQUENTIAL IMAGE DISPLAY DEVICE AND IMAGE DISPLAY METHOD

Document Type and Number:

WIPO Patent Application WO/2016/002409

Kind Code:

A1

Abstract:

A subframe data generation unit (12) determines a distribution color (X) that is the color of a variable color subframe, thereafter selects pixels in sequence, and performs the following processing on a selected pixel (P). On the basis of brigthnesses (Dr, Dg, Db) and the distribution color (X), a distribution brightness (Dsr, Dsg, Dsb) is found, and a distribution ratio (α) is set to a value of 1 at which color breakup becomes minimum. On the basis of the brightness of the selected pixel (P), the brightness of a neighboring pixel (Pi) (i=1-N), and the distribution color (X), an evaluation value (Qi) relating to a color difference when a line of sight is moved is found, and the distribution ratio (α) is decreased in stages until the maximum value (Qmax) of the evaluation value (Qi) becomes a threshold value (Qth) or less. On the basis of the distribution ratio (α) determined according to the distribution color (X) and each pixel, the brightnesses (Dr, Dg, Db) of three colors are converted into the brightnesses (Ex, Er, Eg, Eb) of four colors. Consequently, irregular flicker that occurs in the vicinity of a boundary between pixel regions of different colors is suppressed.

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Inventors:

KOBAYASHI MASAMITSU

Application Number:

PCT/JP2015/065733

Publication Date:

January 07, 2016

Filing Date:

June 01, 2015

Export Citation:

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Assignee:

SHARP KK (JP)

International Classes:

G09G3/36; G02F1/133; G09G3/20

Domestic Patent References:

WO2012099039A1

2012-07-26

Foreign References:

JP2003140617A	2003-05-16
JP2010096894A	2010-04-30
JP2002191055A	2002-07-05
JP2003248462A	2003-09-05

Other References:

KAZUKI TAIRA ET AL.: "14-6 Selective four-primary color field- sequential display for color breakup reduction", THE INSTITUTE OF IMAGE INFORMATION AND TELEVISION ENGINEERS 2004 NEN NENJI TAIKAI KOEN YOKOSHU, 2 August 2004 (2004-08-02)
YOSHIE IMAI ET AL.: "D-11-91 An Improvement of Color Breakup for Field Sequential Display System", 2007 NEN THE INSTITUTE OF ELECTRONICS, INFORMATION AND COMMUNICATION ENGINEERS SOGO TAIKAI KOEN RONBUNSHU, JOHO SYSTEM 2, 7 March 2007 (2007-03-07), pages 91

Attorney, Agent or Firm:

SHIMADA, AKIHIRO (JP)
Akihiro Shimada (JP)

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