Sunday, 24 January 2016

How are OLED screens driven?


How are OLED screens such as the ones on my cell phone, driven?



From my understanding, an OLED screen is basically a matrix of tri-coloured LEDs. LEDs can be dimmed by using PWM. So does that mean that each color of each pixel on the screen has it's own separate PWM circuit or are they multiplexed in some way or is it all together much more complicated than that?




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