Uniformity of backlighting, calibration results, dead pixel check

Uniformity of backlighting

To test the uniformity of the backlighting, screen brightness was set to 160 cd/m². The test was carried out on a calibrated profile. Luminance uniformity was rather good. As you can see, the intensity of the illumination starts to decrease as you move away from the center. The maximum subsidence is observed in the lower-right corner and reaches 9%. When analyzing the black field, we found no obvious bleeding. Of course, the presence or absence of "highlights" may differ between different units of this model, but in this case, we can only report a good result for the test sample.

Viewing angles, glow-effect, and pulse width modulation

You can clearly see the colour shift and drop in contrast when viewing the monitor from the side, which is quite typical of VA panels. There is no ‘colour inversion’, as you’d observe on a TN display.

Calibration results

After calibration, the accuracy of the panel’s color rendition significantly improved. DeltaE deviations reached 0.35 on average (norm - 1.5) and 1.25 on maximum deviation (norm - 4). 

Dead pixel check

On inspection, we found no dead or stuck pixels.