
Proceedings Paper
Image quality evaluation of LCDs based on novel RGBW sub-pixel structureFormat | Member Price | Non-Member Price |
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Paper Abstract
Many display manufacturers have studied RGBW pixel structure adding a white sub-pixel to RGB LCD and recently
revealed UHD TVs based on novel RGBW LCD. The RGBW LCD has 50% higher white luminance and 25% lower
primary color luminance compared to RGB LCD.
In this paper, the image quality of RGBW and RGB LCD was dealt with. Before evaluating them, TV broadcast video
and IEC-62087 video were analyzed for test video clips. In order to analyze them, a TV reference video from TV
broadcast content in Korea was firstly collected. As a result of TV reference video analysis, RGBW LCD was expected
to improve image quality more because most of colors are distributed around white point and population ratio of
achromatic colors is higher.
RGB, RGBW and RGBW using wide color gamut (WCG) backlight unit (BLU) LCDs were prepared, and a series of
visual assessments were conducted. As a result, RGBW LCD obtained higher scores than RGB LCD about four
attributes (‘Brightness’, ‘Naturalness’, ‘Contrast’ and overall image quality) and ‘Colorfulness’ was not higher score
than RGB LCD in test still images. RGBW LCD’s overall image quality in the TV reference video clips also was
assessed higher than RGB LCD. Additionally, RGBW LCD using WCG BLU shows better performance about
especially ‘Colorfulness’ than RGBW LCD.
Paper Details
Date Published: 8 February 2015
PDF: 7 pages
Proc. SPIE 9396, Image Quality and System Performance XII, 939613 (8 February 2015); doi: 10.1117/12.2077071
Published in SPIE Proceedings Vol. 9396:
Image Quality and System Performance XII
Mohamed-Chaker Larabi; Sophie Triantaphillidou, Editor(s)
PDF: 7 pages
Proc. SPIE 9396, Image Quality and System Performance XII, 939613 (8 February 2015); doi: 10.1117/12.2077071
Show Author Affiliations
Sungjin Kim, LG Display (Korea, Republic of)
Dongwoo Kang, LG Display (Korea, Republic of)
Jinsang Lee, LG Display (Korea, Republic of)
Jaekyeom Kim, LG Display (Korea, Republic of)
Yongmin Park, LG Display (Korea, Republic of)
Dongwoo Kang, LG Display (Korea, Republic of)
Jinsang Lee, LG Display (Korea, Republic of)
Jaekyeom Kim, LG Display (Korea, Republic of)
Yongmin Park, LG Display (Korea, Republic of)
Taeseong Han, LG Display (Korea, Republic of)
Sooyeon Jung, LG Display (Korea, Republic of)
Jang Jin Yoo, LG Display (Korea, Republic of)
Moojong Lim, LG Display (Korea, Republic of)
Jongsang Baek, LG Display (Korea, Republic of)
Sooyeon Jung, LG Display (Korea, Republic of)
Jang Jin Yoo, LG Display (Korea, Republic of)
Moojong Lim, LG Display (Korea, Republic of)
Jongsang Baek, LG Display (Korea, Republic of)
Published in SPIE Proceedings Vol. 9396:
Image Quality and System Performance XII
Mohamed-Chaker Larabi; Sophie Triantaphillidou, Editor(s)
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