Vertical Dispensing of 0.075-0.100mm Line Widths

 

This year at SEMICON West, our alliance partner GPD Global introduced the company’s new technology related to fine line and nano-shot dispensing, particularly related to vertical interconnect technology. New dispense technology and cooperation with fluid suppliers has made the next level possible with horizontal and vertical lines down to 75 microns.

GPD Data Sheets 

This same dispense technology is applied to dot dispensing to achieve dots down to 75 microns in diameter. Along with this optimized nano-shot pump, GPD also demonstrated the continuously volumetric PCD dispense technology without drip or drool for low to mid-viscosity fluids.

This process has been around for some time, used primarily in the assembly of memory modules and other high-density assembly applications. It is basically dispensing a line or a column up the side of a die to perform a vertical interconnect. The challenge is that as everything gets smaller and the density of the chips get even higher, the columns/lines have to get even smaller in diameter/width. Current technology has a lower limit of approximately 0.150 mm (0.006”) with pump and materials being the limiting factor.

GPD Global has developed a process, in cooperation with MicroCoat Technologies, to dispense vertical interconnects at line widths from 0.075 to 0.100 mm. A combination of fluid formulation and pump development has resulted in the ability to dispense these line widths. GPD utilizes their new MicroPiston Pump on their Max Series Dispensers for these applications. Dispensing vertically requires precise control of the dispensing tip. Angling the nozzle towards the product ensures strong tacking of the fluid to the stack. Precise alignment of the dispense tip through calibration and vision algorithms ensures consistent results. The resultant lines shown here are 75 to 100 micron in width and were achieved using a 50 micron nozzle. 

GPD Global, vertical dispensing, dispensing solutions, volumetric dispensing, Palomar TechnologiesGPD Global, vertical dispensing, volumetric dispensing, dispensing solutions, Palomar Technologies

Notice the uniformity of line width as well as the uniformity of starts and ends. GPD Global pump technology eliminates “snake heads” that are common with other technology.

Even if a company is not performing vertical interconnects, many companies are in demand of dispense applications, including the ability to dispense a very small dot. Recently GPD qualified the MicroPiston Pump in an application where they were dispensing a 100um dot of fluid. GPD Global just might have that piece of technology that will enable you to take your process to the next level. At Palomar Technologies, we are focused on providing our customers with the best overall solution. With our alliances, such as GPD, we can better tackle and confidently succeed over the tough challenges of the microelectronics assembly world.

About GPD Global
GPD Global is an equipment manufacturer of high-quality, precision, automated fluid dispensing and component-prep systems. The company is an international, state-of-the-art equipment supplier for the PCB assembly and semiconductor industries. It designs and manufactures a variety of automatic fluid dispense systems. GPD Global also manufactures an SMT Cover Tape Peel Tester and Component Prep equipment for Thru-Hole applications. The company is committed to offering premium service to its customers and has sales and customer support affiliates located throughout the world, including North America, South America, Europe, the Middle East and Asia-Pacific. For more information, visit www.gpd-global.com.

Learn more on Volumetric Dispensing from GPD Global:

GDP Continuous Volumetric Pump

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Dale Perry
Regional Account Manager, Eastern Americas
Palomar Technologies, Inc.