LCD Pulse-width modulation (PWM) brightness controll on HP zr24w

HP zr24w (e-IPS) on the right. BenQ FP937s (TN-film) on the left. Effect is not visible under normal viewing condition. This film was captured with slow-motion camera. Real camera frame rate is 240 frames per second.

There are number of talks whether PWM brightness control is causing increased eyes fatigue because of flickering. Frequency of flickering is over 150Hz and is supposed to be invisible to human eye.

BenQ fp937s has PWM-less brightness control.

• Category

  • Science & Technology

• License

  • Standard YouTube License