State of the art 3D ink jet printing technology

Background of ink jet printing technology
Ink jet printing technology has been commonly used for commercial applications for decades . However , Ink jet printing technology just started attracting attentions for industrial applications due to very high accuracy pico liter drop volume and drop placement precision for functional materials such as light blocking ink, conductive ink and UV adhesive for advanced manufacturing like OLED, sensors, Black matrix, semiconductor mini/micro led and PCB.
Ink jet printing technology is able to control the drop size down to **** , which can not be achieved by piezo jetting technology because piezo jetting technology is mainly designed to jet adhesive materials with dot size larger than 200 microns. Therefore Ink jet printing technology becomes the best alternative technology to satisfy the applications requiring dot size smaller than 200 micron.
However ink jet printing technology has different challenges including choosing the right printhead , avoiding ink clogging at nozzles and dissolved air in the ink as well as proper curing. For mass production, Ink jet printing has more challenges than just the printer head issues. Ink jet printing technology is an additive manufacturing technology for product manufacturers who like to improve the flexibility of their printing process by going digital. To achieve the digital printing purpose for mass production, the ink jet printing equipment has to be able to control drops to precisely land on the substrate under high speed, which needs integrating motion control and vision technology to solve the substrate warpage, dimension and position variations.
GENERAL CUSTOMER NEEDS FOR DIGITAL PRINTING IN ELECTRONICS INDUSTRY
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SSI ADVANCED DIGITAL PRINTING PLATFORM
With almost 3 decades experiences in micro fluid dispensing and more than a decade developing core technologies for micro dispensing technology, SSI owns complete knowledges, technologies and the engineering team to develop the most advanced digital printing system. SSI digital printing platform has powerful vision capabilities to scan the substrate or wafer, despite of its warpage or position shift, to get true 3D coordinates and feedback to control system to adjust each individual nozzle on the printhead to control all drops to precisely land on the right positions. The system not only allow the printheads to print from the top, the printing angle can be adjusted as necessary to print on lateral surfaces.

Also SSI digital printing platform has self-developed printhead driver system, which allows the user to set up proper pulse and duration to generate the waveform for best printing quality.

VERSATILE PRINTHEADS AVAILABLE TO WORK WITH DIFFERENT INKS
Also SSI is working closely with world most renowned printhead manufactures to develop the printhead most suitable for different inks, which can ensure the best printing quality, long life and easy maintenance. In addition, SSI digital print platform has also developed different ink circulation systems to avoid trapped air bubble and potential particle settlement issues.
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CAPABILITIES OF FULL SURFACE OR SELECTIVE PATTERNS PRINTING ON TOP AND LATERAL SURFACES
SSI digital printing platform accepts direct teaching or CAD file for any kind of pattern printing including selective printing on either top or lateral surfaces.
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POST AOI CAPABILITIES
With more than a decade experiences in developing vision technology for fluid dispensing and optical inspection, SSI digital platform has the best capabilities and experiences to execute real time optical inspection right after printing to guarantee good printing quality.
FLEXIBILITY OF DEVELOPING CUSTOMIZED DIGITAL PRINTING PROCESS
量產的數位噴墨技術會因為客戶的不同應用製程也有所不同,SSI完整的先進製程技術,除數位噴印還涵蓋流體壓電塗佈、pick-place、bonding、雷射精密加工、AOI、雷射非破壞檢測及量測等客製化的先進製程整合技術。
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