Abstract: Examples disclosed herein relate to device. The device includes a substrate, a plurality of adjacent pixel-defining layer (PDL structures disposed over the substrate, and a plurality of sub-pixels. The PDL structure have a top surface coupled to adjacent sidewalls of the PDL structure. The plurality of sub-pixels are defined by the PDL structures. Each sub-pixel includes an anode, an organic light emitting diode (OLED), a cathode, and an encapsulation layer. The organic light emitting diode (OLED) material disposed over the anode. The OLED material extends over the top surface of the PDL structure past the adjacent sidewalls. The cathode is disposed over the OLED material. The cathode extends over the top surface of the PDL structure past the adjacent sidewalls. The encapsulation layer is disposed over the cathode. The encapsulation layer has a first sidewall and a second sidewall.

Abstract: A phase-locked loop including a phase-voltage conversion unit, a calibration unit, and an oscillation feedback unit is provided. The phase-voltage conversion unit receives a reference signal having a first frequency and a first phase, and a first feedback signal having a second frequency and a second phase, and produces a first adjusting signal based on the first frequency, the second frequency, and a phase difference between the first phase and the second phase. The calibration unit receives the reference signal and the first feedback signal, and produces a second adjusting signal based on a frequency difference between the first frequency and the second frequency through a binary search operation. The oscillation feedback unit receives the first adjusting signal and the second adjusting signal, and has a controllable capacitor array controlled by the second adjusting signal for producing a second feedback signal having a third phase locked to the first phase.