How Does PWM Driven LED Backlight For LCDs Work?
PWM-driven LED backlights control LCD brightness by rapidly switching LEDs on/off (pulse-width modulation). The duty cycle (on-time ratio) adjusts perceived brightness without shifting LED color temperatures—ideal for maintaining color accuracy. Panox Display integrates PWM controllers operating at 1–30 kHz, synchronized with LCD refresh rates to minimize flicker. Pro Tip: Higher PWM frequencies (>5 kHz) reduce … Read more