Smart Backlight Control by White LED Driver, Ambient Light, and Proximity Sensor Reference Design
1 января 2018
The TIDA-01364 TI Design conserves power and extends LCD backlight life by dynamically adjusting the LCD backlight brightness relative to the environment’s ambient light levels. A capacitive proximity sensor saves power and increases the LCD backlight life by waking up the system from sleep or standby mode when a person approaches.
Demonstrates EMI-resistant proximity detection using copper PCB material Excellent human eye spectral response matching with strong IR rejection (<1%) Dynamically adjusts backlight brightness on logarithmic scale based on how the human eye perceives brightness Even LED illumination controlled through white LED driver PWM without calibration Integrated backlight UV filter enables good performance in outdoor applications