This article introduced the development of DTC/ITRI in ink-jet printing of display and printed circuit board and its platform architecture. Based on the ink-jet process need, the DTC L series are equipped twelve piezo heads and dual curing system, including UV curing and thermal curing, to ready for mass production of ink-jet printing fabrication. A real-time task console arbitrates the delivery of panel, monitors the control parameters floating, the memory management, the printing procedure, record of environmental conditions, and communication. System accuracy can reach within ±10 um at size of 600mm*700mm panel, and printing speed is up to 20 in /sec by adapting the dividing frequency technology (DTF). Maximum tact time is 20 sec at 400dpi*400dpi and 45 sec at 800dpi*800dpi for full panel printing region. Optical alignment and image compensation for original image deterioration was realized by tunable dual auto-focus CCD, at optical resolution of ± 1 um. Major functionalities for yield improvement like waveform modulation to address each nozzle driving and satellite drop, image trimming to compensate substrate surface property, image filtering to control the thickness of dispensing layer, complex service to clean head quality, multi-function loading table to hold a panel down during printing operation, condition of print-head strobe to set up printing nozzle database and lighting control to cure layer with high uniformity were also introduced. This article disclosed a detail design rule for consideration of ink-jet fabrication, and realized it in PCB and display application.