TCL Huaxing XRGB: Color gamut breaks through BT.2020 by 131%

The improvement of color gamut promotes a leap in display technology and also carries people’s long-term pursuit of the simple desire to “see the real world clearly”. When we stare at the rippling blue waves of the sea, whether the cyan color between blue and green on the actual screen display can restore the real world, the traditional RGB three-color display architecture cannot give a perfect answer, and there are still certain physical boundaries for its accurate presentation of highly saturated cyan.

At the recently held SID Display Week 2026, TCL Huaxing demonstrated its latest XRGB display technology solution.

According to TCL Huaxing’s official disclosure, this solution introduces the fourth primary color cyan (Cyan) into the LCD system, and the measured color gamut area can reach 131% of the BT.2020 standard. At the same time, combined with WHVA Ultra panel technology, it achieves a native contrast ratio of 7000:1 and a reflectivity of 0.7%.

▋ "Color Blind Zone" in the Three-Color Era, XRGB Architecture Innovation Redefines Color Boundaries

In the past few decades, the display industry has always followed the RGB (red, green and blue) three primary color architecture. After long-term iteration, this technical system is highly mature and stable, but it has unavoidable physical limitations: the colors perceptible to the human eye are far richer than those that can be presented by a three-color mixture. Take the cyan band with a wavelength of about 495nm as an example. It is widely found in natural vegetation, water, sky and other scenes, and is the core frequency band that constitutes the color of the real environment.

Under the traditional RGB architecture, cyan can only be "mixed and simulated" by green and blue, and lacks accurate color rendering support from independent sub-pixels, resulting in long-term technical blind spots in this color gamut, resulting in color reproduction distortion and lack of detail.

The innate physical constraints of pixels are the core bottleneck that restricts the screen from achieving ultimate color restoration. TCL Huaxing XRGB technology chooses to innovate and break through the underlying pixel architecture to redefine the color expression boundaries of display technology. By adding independent cyan (Cyan) sub-pixels based on the traditional RGB three-color sub-pixel system, a new RGBC four-color technology architecture is constructed. RGBC technology reconstructs the pixel structure, color resistance materials, backlight materials, and image processing algorithms throughout the entire chain, covering the extreme boundaries of the color range visible to the human eye, restoring the real world more accurately, more naturally, and more delicately.

▋ Four-color underlying technology breakthrough achieves BT.2020 131% color gamut restoration

■ Pixel design: architecture reorganization, specification optimization

The four-color pixel layout of XRGB is not simply adding a grid of cyan next to RGB, but a pixel geometric reconstruction completed through accurate simulation experiments. The TCL CSOT R&D team systematically optimized the core dimensions of the four RGBC sub-pixels such as spatial arrangement, area ratio and optical crosstalk: while maintaining the same physical pixel density as conventional panels, the optimal sub-pixel arrangement scheme was adopted, taking into account the maximum color display boundary and the overall light utilization efficiency, to achieve the optimal solution for energy efficiency and image quality.

■ Self-research of color resistors: C self-research breakthrough, empowering OC display

TCL Huaxing has long been deeply involved in the field of display color resistors core materials, accumulated profound material research and development skills and a large number of high-quality color material reserves, and built industry-leading color resistor technology advantages. The new generation of TCL Huaxing RGBC technology relies on a complete self-developed material library to quickly select suitable formulas, and successfully develops an exclusive cyan color resistor that is scarce on the market. It breaks through the color gamut bottleneck from the core material side, achieves precise matching and efficient collaboration between color resistors and backlight systems, and enables display panels to achieve high color gamut performance.

■ Backlight matching: RGBCLED BLU, let the light source "tell the truth" first

Even with a precise and complete pixel architecture design and C color resist material with accurate wavelength, if the backlight source cannot match and supply the corresponding cyan spectrum, the performance advantages of the RGBC four-color display system will still be difficult to release. To this end, TCL Huaxing has simultaneously developed an exclusive RGBC backlight unit to achieve collaborative upgrades on the light source side and the pixel side. The RGBC BLU solution introduces an independent cyan LED light source (490~500nm), and cooperates with RGBC OC collaborative control to provide core guarantee for cyan pixels to achieve pure, high-energy native light emission. It is also the hardware foundation for realizing the 131% color gamut of BT.2020.

■ Image processing algorithm: four-color mapping, allowing signals to "understand" four-color language

After the hardware architecture upgrade, a key challenge comes: the existing video signals and image content are almost all based on RGB three-color coding. How to accurately present these contents on a four-color screen? TCL Huaxing has developed a proprietary RGBC color mapping algorithm for this purpose:

Accurate analysis of color space: Establish a three-dimensional color mapping model based on CIE· Grayscale and gamma consistency correction: Independently perform gamma curve calibration for each channel of the four colors to ensure that the multi-level grayscales from dark to bright parts maintain a smooth transition under the four-color system, reducing the risk of color casts and jumps;

Based on this algorithm, users do not need to change content sources. Existing 4K HDR videos, games, and photos can automatically obtain four-color enhancement processing on XRGB screens, making them backward compatible and upward breakthroughs.

▋ XRGB superimposed WHVA Ultra SID makes a grand debut, leading the way in image quality

TCL Huaxing XRGB technology superimposed on WHVAUltra high-definition complete machine was fully unveiled at the SID2026 exhibition, achieving BT.2020 color gamut of 131%, 7000:1 contrast ratio, reflectivity of 0.7% and true 4K display, expanding the boundaries of color display, restoring true colors, and setting a benchmark for LCD image quality. After the exhibit was released, it attracted widespread attention in the industry. TCL CSOT will collaborate with the upstream and downstream display industries to accelerate the implementation of four-color technology.

▋ XRGB promotes display upgrades and opens a new era of multi-color display

From CRT picture tubes to LCD panels, from sRGB to DCI-P3 to the BT.2020 color gamut standard, every iterative leap in display technology is essentially a persistent exploration by humans to constantly pursue and restore the true vision.

TCL CSOT stated that the value of XRGB technology goes far beyond the numerical jump in color gamut parameters. Its core significance is that it has built a new multi-color display technology paradigm from the pixel underlying architecture level, proving that based on the mature LCD industry system, through systematic innovation in materials, structural design and image processing algorithms, display quality still has huge room for breakthroughs and development potential.