TPO Displays Corp (TPO) has unveiled new technology, named Ambient Light Sensor (ALS) for LTPS applications. TPO ALS technology measures the ambient light intensity and also adjusts the backlight levels.
TPO ALS technology converts the measured photocurrent into a robust digital signal. Thus it improves the overall ALS stability as compared to a Si-based ALS systems, which supply a frail analog output signal. After processing sensor output signals, the driver IC will send data using the preferred interface. The technology offers a leading light intensity measurement range from 10 lux up to 55 k lux. Even the technology also reduces the ambient light signal generated by a masked sensor from, which is generated by an exposed sensor signal, allowing ambient light measurements from levels lower than 10 lux.
The ambient light signals are converted on-glass into a robust PWM signal by using the properties to intrinsic LTPS technology. ALS technology also eliminates the need for a separate light sensor for mobile phone applications. Even it reduces the cost of components and increases design space. Additionally, TPO ALS technology is able to reduce power consumption in mobile applications through backlight control.
Image Credit: Oled
Via: Tech On
