کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
538432 1450192 2015 8 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Wide color gamut and high dynamic range displays using RGBW LCDs
موضوعات مرتبط
مهندسی و علوم پایه مهندسی کامپیوتر سخت افزارها و معماری
پیش نمایش صفحه اول مقاله
Wide color gamut and high dynamic range displays using RGBW LCDs
چکیده انگلیسی


• We analyze the better suitability of RGBW LCDs for wide color gamut than RGB LCDs.
• We propose an effective method to implement the HDR display using RGBW LCDs.
• Our HDR displays based on RGBW LCDs can reproduce 1500 nits peak luminance.
• Our HDR displays have very high potential for mass production.

An increasing number of studies on efficient implementation of vivid and realistic displays are being conducted as liquid crystal displays (LCDs) become widely used in TV applications. For vivid displays, the specifications such as wide color gamut (WCG) and high dynamic range (HDR) should be implemented in LCDs. However, the low transmittance rate of the WCG and the significant costs for the peak luminance capability of the HDR are major obstacles. Hence, an RGBW LCD, which is capable of increasing the transmission efficiency, may be a good platform to overcome these problems.In this paper, we estimate the perceived brightness effect of the WCG by using the Helmholtz–Kohlrausch (H–K) effect on RGB and RGBW LCDs. The simulation results showed that the RGBW LCD was more suitable for adopting the WCG than the RGB LCD in terms of the brightness balance of achromatic and chromatic colors, and the results were also confirmed by subjective tests. In addition, we propose an effective method to implement the HDR display based on the RGBW LCD. The data stretch, considering a local adaptation characteristic of a human visual system (HVS), greatly enhanced the details of the dark regions, and the local peak dimming using the white channel analysis and the white channel data itself increased the expressiveness of the peak luminance in irradiative or specular regions to 1500 nits.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Displays - Volume 40, December 2015, Pages 9–16
نویسندگان
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