Summary of DisplayHDR Specs under CTS 1.1

The table below is a summary of the specifications for the VESA DisplayHDR and DisplayHDR True Black standards as they are updated by CTS 1.1 released on September 4th, 2019. A complete description of these specifications and the VESA certification test criteria are available in DisplayHDR CTS v1.1 which can be downloaded here, along with other free VESA standards.

The new DisplayHDR CTS 1.1 test tool and measurement template is available for download from the VESA GitHub page. The tool will also be publicly available soon from the Microsoft Store.

DisplayHDR Performance Tier:
400 500 600 1000 1400 400
True Black
500
True Black
MINIMUM LUMINANCE LEVEL
10% Center Patch Test – Minimum Luminance Level (cd/m2) 400 500 600 1000 1400 400 500
Full-screen Flash Test – Minimum Luminance Level (cd/m2) 400 500 600 1000 1400 250 300
Full-screen Long-duration Test – Minimum Luminance Level (cd/m2) 320 320 350 600 900 250 300
BLACK LEVEL
Dual Corner Box Test – Screen Center, Maximum Luminance Level (cd/m2) 0.4 0.1 0.1 0.05 0.02 0.0005 0.0005
Dual Corner Box Test, Both White Corners, Minimum Luminance Level (cd/m2) 300 375 450 750 1050 300 375
ACTIVE DIMMING/CHECKERBOARD TEST
Active Dimming – Ratio of maximum white to black of a 50cd/m2 checkerboard (stops) 11 11.6 12 13 13.5 N/A N/A
Active Dimming – Ratio of maximum white to black of a 5cd/m2 checkerboard (stops) 12 12.6 13 14 14.5 N/A N/A
Checkerboard – Max Black Level at Full Luminance (True Black only) 0.0005cd/m2
COLOR GAMUT AND MINIMUM LUMINANCE SPECIFICATIONS
ITU-R BT.709 Coverage for Both 10% and Full-screen Color Patches 95% 99% 99% 99% 99% 99% 99%
DCI-P3 CIE D65e Coverage for Both 10% and Full-screen Color Patches N/A 90% 90% 90% 95% 90% 90%
Combined Color Luminance (Lr + Lg + Lb) 10% Color Patch Test (cd/m2) 400 500 600 1000 1400 400 500
Combined Color Luminance (Lr + Lg + Lb) Full-screen Color Test (cd/m2) 320 320 350 600 900 250 300
MINIMUM BIT-DEPTH SPECIFICATIONS
10-bit Video Signal, per Channel
Minimum Driver-IC Bit Depth (+2b Dithering FRC) 8b 8b+2 8b+2 8b+2 8b+2 8b+2 8b+2
Minimum 8-bit Digital-to-analog Conversion
Backlight Control 8-bit Accuracy N/A N/A
DISPLAYHDR RISE-TIME SPECIFICATIONS
Maximum Number of Frames for Rise from Black to Maximum Luminance 8 8 8 8 8 2 2
LUMINANCE AND WHITE POINT ACCURACY
Permitted Maximum Delta-ITP error for tests at 5 and 15cd/m2 20
Permitted Maximum Delta-ITP error for tests at 50, 100, and 200cd/m2 15
Permitted Maximum Delta-ITP error for tests at 50% of Tier Level maximum N/A 15 15 15 15 N/A 15