Apple Inc.
Hybrid microdriver architectures having relaxed comparator requirements

Abstract:

Methods, systems, and apparatuses for controlling an emission of the light emitting devices are described herein. The light emitting devices may be light emitting diode (LED) devices including .mu.LED devices or organic LED (OLED) devices. Emission control of the LED may be performed using a micro-scale driving circuit (e.g., .mu.Driver) containing drive transistors for constant current driving of the light emitting devices. One embodiment provides for a display driver hardware circuit comprising a thin film transistor (TFT) backplane and an integrated circuit to switch and drive a plurality of LED devices, the integrated circuit including emission logic to generate an emission pulse to an LED device, the emission logic including comparator logic having a relaxed comparator offset, the comparator logic to compare a voltage from a storage capacitor on the TFT backplane to a reference voltage to control a length of the emission pulse provided by the emission logic.