COG LCD Module option is more advantageous than the SMD LCD Module option in the cost, basing on
the material and assembly aspects. COG is no need to place and weld the liquid crystal element and LCD
controller onto the PCB board, which can avoid the cost of the process steps and the cost of inspection and
verification.
As to the materials and according to the quantity of LCD connectors, SMD requires a considerable
quantities of connectors (power, capacitance, resistance, and so on) between PCB and LCD glass, But
COG only requires to connect power supply and pin interface