TCL CSOT demonstrated 3 experimental 4 subpixel OLED panels at its annual DTC conference in Wuhan. The prototype displays add a 4th color emitter to the traditional fine metal mask RGB array, letting the screen switch between standard operation and specialized power saving or wide color modes. The technology remains in testing on a 10.95 inch tablet sized format, with commercial production timelines unannounced.
CSOT addressed the commercial lifespan hurdle of blue OLED material by combining 2 different blue components inside an RGBB matrix. One blue subpixel uses standard fluorescent material, while the second subpixel introduces blue phosphorescent technology. Activating the phosphorescent emitter in a low power mode cuts panel power consumption by 20% compared to standard operation. The 10.95 inch display runs a resolution of 1536x2456 with a pixel density of 265 PPI.
A second RGBB variation pairs 2 fluorescent blue subpixels, tuning 1 emitter to slash blue light emissions for improved eye comfort. CSOT also revealed an RRGB panel that integrates an extra deep red subpixel into the RGB structure. Switching between standard RGB mode and the wide gamut mode expands BT.2020 color space coverage from 89% to 95%, delivering richer saturation for professional imaging tasks. This panel matches the same 10.95 inch screen size, 1536x2456 resolution, and 265 PPI density.
CSOT modified traditional liquid crystal display manufacturing by adding a white element to its color filter layout. The company calls this configuration RGBN, where N represents a natural white subpixel. This arrangement increases light transmittance from the high 6% range up to 9%, reducing power draw from the LED backlight unit. The demonstration panel delivers 4K resolution at 3840x2160, supports a 120 Hz refresh rate, and covers over 95% of the BT.2020 color space.
