The Relationship Between Color Gamut and Brightness of Multi-primary Color Displayer

2015 ◽  
pp. 907-916
Author(s):  
Yuli Ding ◽  
Yan Li ◽  
Na Li ◽  
Yanlin Du ◽  
Xinzhi Wang ◽  
...  
Keyword(s):  
Color Gamut ◽  
Primary Color ◽  
The Relationship

Study of Color Reconstruction of Color Holography

2015 ◽  
Vol 731 ◽  
pp. 108-113
Author(s):  
Quan Hui Tian ◽  
Hai Qi Yu ◽  
Dao Mu Zhao ◽  
Yan Liu
Keyword(s):  
Matching Theory ◽  
Computation Method ◽  
Color Matching ◽  
Display System ◽  
Primary Color ◽  
Color Display ◽  
Color Holography ◽  
Relationship Of ◽  
The Relationship

The relationship of color display system and digital color reconstruction of color holography is discussed based on CIE color matching theory. With the general color display space-sRGB, this research calculated the three primary wavelengths as record and reconstruction wavelength. Based on the relationship between the RGB color values of object and the amplitude of object light, the computation method of three recording primary color and the color values of reconstruction color hologram is presented and verified by the experiment.

25.1: Invited Paper: Development of Wide-Color-Gamut Mobile Displays with Four-Primary-Color LCDs

2006 ◽  
Vol 37 (1) ◽  
pp. 1221 ◽  
Author(s):  
E. Chino ◽  
K. Tajiri ◽  
H. Kawakami ◽  
H. Ohira ◽  
K. Kamijo ◽  
...  
Keyword(s):  
Color Gamut ◽  
Primary Color ◽  
Wide Color Gamut

scholarly journals Design and Simulation of Low Circadian Action Micro-LED Displays with Four Primary Colors

Crystals ◽  
2020 ◽  
Vol 10 (5) ◽  
pp. 383
Author(s):  
Ziqian He ◽  
Guanjun Tan ◽  
Yi-Fen Lan ◽  
Shin-Tson Wu
Keyword(s):  
Circadian Rhythm ◽  
Light Emitting Diode ◽  
Liquid Crystal Displays ◽  
Real Image ◽  
Color Gamut ◽  
Daily Lives ◽  
Light Emitting ◽  
Primary Color ◽  
Long Time ◽  
Circadian Effect

Nowadays, displays are ubiquitous in our daily lives. Long-time exposure to a display’s unnatural light could influence the user’s circadian rhythm, especially at night. Here, we propose a four-color micro-light-emitting diode (LED) display to achieve low circadian action for nighttime uses. Specifically, we evaluate the RGBW-type (red, green, blue, and white) and RYGB-type (red, yellow, green, and blue) micro-LED displays in terms of circadian effect and color gamut coverage. With the addition of an extra white subpixel, it was found that the circadian effect at night can be reduced dramatically, but the color gamut remains unchanged. However, with an additional yellow subpixel, both the circadian effect and color gamut were found to improve. Finally, we simulated the circadian illuminance of real image contents for different displays. In comparison with existing liquid crystal displays, organic LED displays, and RGB (red, green, blue) micro-LED displays, the proposed four-primary-color micro-LED displays can significantly reduce the circadian effect at night.

Mapping the Broad CMY Subtractive Primary Color Gamut Using a Dual-Active Electrochromic Device

2014 ◽  
Vol 6 (9) ◽  
pp. 6623-6630 ◽  
Author(s):  
Rayford H. Bulloch ◽  
Justin A. Kerszulis ◽  
Aubrey L. Dyer ◽  
John R. Reynolds
Keyword(s):  
Electrochromic Device ◽  
Color Gamut ◽  
Primary Color

scholarly journals Variation of LED Display Color Affected by Chromaticity and Luminance of LED Display Primary Colors

2020 ◽  
Vol 2020 ◽  
pp. 1-14
Author(s):  
Xinyue Mao ◽  
Xifeng Zheng ◽  
Ruiguang Wang ◽  
Hongbin Cheng ◽  
Yu Chen
Keyword(s):  
Mathematical Models ◽  
Color Space ◽  
Engineering Application ◽  
The Other ◽  
Mapping Algorithms ◽  
Color Mapping ◽  
Primary Color ◽  
Specific Variation ◽  
The Relationship ◽  
Variation Tendency

In recent years, the effect of LED display is increasingly important in the LED display field. Primary colors’ chromaticity and luminance of LED display as crucial elements influence the LED display color. Therefore, there is a need for color mapping algorithms that indicate the relationship between primary colors and display color’s chromaticity and luminance. In this paper, two mathematical models have been developed. One has shown the display color’s chromaticity and luminance affected by luminance of primary colors change. The other one has shown a complicated relationship that primary color is mixed by other primary colors to change chromaticity first and then the mixed primary is used as “new LED primary color.” In both mathematical models, CIE x ∗ y ∗ Y color space was used as the mutual color space; thus, there was a specific variation tendency of colors with luminance or chromaticity of primary colors change in this color space. The newly designed mathematical models can consistently guide us how to acquire the desired display color by changing luminance or chromaticity of primary colors. Therefore, it has important engineering application value.

The Influence of Offset Paper Properties on Printing Effect

2012 ◽  
Vol 550-553 ◽  
pp. 3295-3298
Author(s):  
Zhi Jian Li ◽  
Qing Jun Meng ◽  
Liang Liu
Keyword(s):  
Optical Density ◽  
Great Influence ◽  
Saturation Density ◽  
Color Gamut ◽  
Paper Properties ◽  
B Values ◽  
Paper Making ◽  
The Relationship

Offset paper properties have great influence on the quality of print matter. Eleven offset paper samples were printed by IGT printability tester, then the density and L*a*b values of printed samples were measured. The relationship between paper properties and optical density or color gamut of paper printed was studied. The results show that main density increases with the increased ink quantity before the main density reaches saturation, the saturation density becomes greater with increased ink absorbency. When the smoothness is larger, lower ink quantity is needed for reaching saturation density, and larger color gamut is obtained. This study will provide references for the paper making and printing enterprises.

62.1: Five-Primary-Color 60-Inch LCD with Novel Wide Color Gamut and Wide Viewing Angle

2009 ◽  
Vol 40 (1) ◽  
pp. 927 ◽  
Author(s):  
Shun Ueki ◽  
Kozo Nakamura ◽  
Yuhichi Yoshida ◽  
Tomohiko Mori ◽  
Kazunari Tomizawa ◽  
...  
Keyword(s):  
Viewing Angle ◽  
Color Gamut ◽  
Primary Color ◽  
Wide Viewing Angle ◽  
Wide Color Gamut

Interstellar gas in the central region of the Galaxy

1967 ◽  
Vol 31 ◽  
pp. 239-251 ◽  
Author(s):  
F. J. Kerr
Keyword(s):  
Central Region ◽  
Galactic Plane ◽  
Neutral Hydrogen ◽  
Continuum Emission ◽  
Galactic Centre ◽  
Interstellar Gas ◽  
Hydrogen Recombination ◽  
The Galaxy ◽  
Centre Region ◽  
The Relationship

A review is given of information on the galactic-centre region obtained from recent observations of the 21-cm line from neutral hydrogen, the 18-cm group of OH lines, a hydrogen recombination line at 6 cm wavelength, and the continuum emission from ionized hydrogen.Both inward and outward motions are important in this region, in addition to rotation. Several types of observation indicate the presence of material in features inclined to the galactic plane. The relationship between the H and OH concentrations is not yet clear, but a rough picture of the central region can be proposed.

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