The Video Electronics Standards Association (VESA ) today introduced its new DisplayHDR True Black high dynamic range (HDR) standard, a variant on VESA's High-Performance Monitor and Display Compliance Test Specification (DisplayHDR).
The new standard has been optimized for emissive display technologies, including organic light emitting diode (OLED) and future microLED displays.
DisplayHDR True Black allows for up to 100X deeper black levels in addition to a greater dynamic range and a 4X improvement in rise time compared to VESA's DisplayHDR 1000 performance tier. DisplayHDR and DisplayHDR True Black are the display industry's first fully open standards specifying HDR quality for LCD and emissive displays, respectively.
VESA also announced today that it has added a new 500 performance level to both the DisplayHDR and the DisplayHDR True Black standards to address the need for ultra-lightweight HDR laptops. The new 500 level includes local dimming as well as the same color gamut, black level and bit-depth requirements associated with the 600 and 1000 levels with a small decrease in luminance compared to the 600 level, to bring about better thermal control in displays for super-thin notebooks. While the new 500 level is optimized for very small, ultra-slim displays, it actually applies to all resolutions and screen sizes, including those used in monitors.
With the introduction of the new DisplayHDR True Black standard, VESA anticipates a strong adoption curve among OLED display OEMs as has occurred with the DisplayHDR standard.
On LCD displays, what is considered "black" is actually a dark grey tone, which is a result of minor light leakage common with these displays. VESA defined the new DisplayHDR True Black specification with emissive displays in mind to bring the permissible black level down to 0.0005 cd/m2 - the lowest level that can be effectively measured with industry-standard colorimeters. For gamers and movie watchers in subdued lighting environments, displays adhering to the DisplayHDR True Black specification can provide incredibly accurate shadow detail and increases in dynamic range (up to 50X depending on lighting condition).