Title:
METHOD FOR CORRECTING MURA OF DISPLAY PANEL
Document Type and Number:
WIPO Patent Application WO/2018/128308
Kind Code:
A1
Abstract:
The present invention relates to a method for correcting Mura of a display panel to achieve correction at the time of lighting the display panel, the method comprising: a first luminance measurement step of applying a current corresponding to a first reference gray to the display panel so as to light the display panel, and measuring a first measured luminance according thereto; a first gamma curve deriving step of measuring a luminance of a different gray close to the first reference gray, and deriving a first gamma curve with respect to a luminance change, on the basis of the first measured luminance; a first target gray deriving step of setting, as a first target luminance, an actual luminance corresponding to the first reference gray, and deriving a first target gray corresponding to the first target luminance in the first gamma curve; a second luminance measurement step of applying, to the display panel, a current corresponding to a second reference gray separate from the first reference gray so as to light the display panel, and measuring a second measured luminance according thereto; a second gamma curve deriving step of measuring a luminance of a different gray close to the second reference gray, and deriving a second gamma curve with respect to a luminance change, on the basis of the second measured luminance; a second target gray deriving step of setting, as a second target luminance, an actual luminance corresponding to the second reference gray, and deriving a second target gray corresponding to the second target luminance in the second gamma curve; and a correction value deriving step of deriving a correction value graph by using a first target gray value and a second target gray value which correspond to the first reference gray and the second reference gray, respectively, wherein when the display panel is lit using the correction value graph, a current corresponding to a corrected gray instead of a corresponding gray is applied to light the display panel.
Inventors:
LEE SEUNG WON (KR)
Application Number:
PCT/KR2017/015216
Publication Date:
July 12, 2018
Filing Date:
December 21, 2017
Export Citation:
Assignee:
TRISYS CO LTD (KR)
International Classes:
G09G3/20; G09G3/00
Foreign References:
| KR20050123158A | 2005-12-29 | |||
| KR20140129727A | 2014-11-07 | |||
| KR20120028037A | 2012-03-22 | |||
| US20120062609A1 | 2012-03-15 | |||
| US20080180375A1 | 2008-07-31 |
Attorney, Agent or Firm:
JIN, Cheon Woong (KR)
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