Color Gamut Coverage of LCD Displays
In the previous article, I introduced “What is the color gamut coverage of LCD monitors?” Next is the last topic. Today I will introduce the color gamut coverage standard of LCD monitors.
According to convention, we call the range of colors the color range. Different fields have different requirements for the three standard primary color coordinates of R, G, and B, involving different color gamut evaluation standards. The color gamut standards are generally as follows:
1) Non-tariff standards: In 1953, the National Television Standards Committee (TV Standards Committee) of the United States formulated non-tariff standards based on the 1931 “Information Chromaticity Diagram”. This standard is also a commonly used standard in China.
2) ITU-R.B.704 standard: The standard for high-definition television studio television production established by the International Radio Broadcasting Consultative Committee in 1988.
3) SRGB standard: In 1996, the International Electrotechnical Commission established the color gamut standard for digital images. This standard is mainly used for digital image acquisition equipment and has not yet been fully promoted on displays.
4) AdobeRGB standard: Proposed by Adobe in 1998, its color space is larger than SRGB and is generally used in printing, publishing, image processing and other fields.
5) ITU-R.1361 standard: A wide color gamut standard based on the pointer color gamut established by the International Telecommunication Union Radiocommunication Group (ITU-R) in 1988.
6) Xvycc standard: The latest generation of light color gamut standard approved by the International Electrotechnical Commission and released as an international standard in January 2006. Its color gamut not only greatly exceeds the color gamut range of the NSC color gamut, but also can reach a color gamut range twice that of the SRGB color gamut. This specification can define all colors visible to the naked eye.
The development from CCFL to LED backlight shows that people have higher and higher requirements for the color gamut that the system can express, so high color gamut will definitely become the development trend of LCD displays in the future.
