Table 1.

Comparison of GaN microLED arrays driven by CMOS circuits.

Reference	[77]	[76]	[78]	[79]	[74]	This Work
Driver type	in-pixel	in-pixel	in-pixel	MA	DA	MA
Application	display	display	display	neuron stimulation	fluorescence	fluorescence
Resolution	128 × 128	512 × 512	1920 × 1080	64 × 64	8 × 8	32 × 32
Pixel pitch	50 µm	18 µm	2.5 µm	40 µm	200 µm	100 µm
Pixel density	508 PPI	1411 PPI	10,000 PPI	635 PPI	127 PPI	254 PPI
Switch speed	83 kfps	1 MHz–9.15 kfps	n.a.	600 fps	1.28 GHz	500 MHz
Max. LED current	87 µA	120 µA	1.6 µA	10 mA	n. a.	20 mA
LED bias voltage	5 V	up to 5V	n.a. V	up to 4V	up to 5V	up to 10 V
CMOS Tech. Node	0.18 µm	0.18 µm	n.a.	n.a.	0.35 µm	0.35 µm