Temperature Distribution Research on Liquid Packaging Structure of Deep UV LEDs

Table 1

Thermal conductivities and dimensions of packaging components.

Packaging components	Materials	Sizes (mm)	Thermal conductivities (W/(m·K))
Substrate	Al		237
Insulating layer	——		0.25
Circuit layer	Cu		401
Solder paste	SnAgCu		60
Chip	Sapphire		50
Lens	Glass		0.21