MEMS Wafer Capping and Wafer Spray Coating Papers Presented by Nordson ASYMTEK at IWLPC

Presentations in Sessions 3 and 10 in San Jose, CA, November 11th and 12th

Carlsbad, CA, USA, (PresseBox) - Nordson ASYMTEK, a leader in dispensing, coating, and jetting technologies, will present the papers "Sealing Dispensing for MEMS Wafer Capping," by Heakyoung (Jaynie) Park, and "Wafer Spray Coating for Pre-applied Underfill," by Akira Morita, at IWLPC 2012, San Jose, CA, November 11th and 12th in Sessions 3 and 10.

MEMS devices have unique packaging requirements, in particular, because of their fragility. Wafer capping is one packaging method that is gaining popularity because it provides protection for the MEMS device from the dicing process. In addition, wafer capping can provide a vacuum within the MEMS structure and a hermetic seal can be formed. In her presentation, "Sealing Dispensing for MEMS Wafer Capping," Ms. Park explains the challenges involved in MEMS packaging and wafer capping technology, and reviews requirements for dispensing sealant, volumetric accuracy, and motion systems to meet packaging trends.

Mr. Morita will explain the structure of the 3D package, the two types of underfill required by this package structure, along with the technologies used to apply the underfill. These packages have very tight bump pitch and height between the stacked die which make the conventional underfill processes, like capillary and molded, difficult. In addition, chip-on-wafer stacking needs very tight die placement between side-by-side dies, making it hard for underfill to penetrate through the tight die placement after bonding. As a result, pre-applied underfill is gaining attention. The presentation "Wafer Spray Coating for Pre-applied Underfill" addresses pre-applied underfill challenges and requirements, coating technology options and comparisons, and the best apparatus to use for completing the underfill process. Using experience gained from conformal coating and jet dispensing has enabled development of a process of wafer spray coating for pre-applied underfill application because it can address the thickness consistency and material wastage challenges.

The International Wafer-Level Packaging Conference (IWLPC) brings together some of the semiconductor industry's most respected authorities addressing all aspects of wafer-level, 3D, TSV, and MEMS device packaging. For more information, contact Nordson ASYMTEK at or check out the website at

About Nordson Corporation

Nordson Corporation (Nasdaq: NDSN) is one of the world's leading producers of precision dispensing equipment that applies adhesives, sealants, liquid and powder coatings and other materials to a broad range of consumer and industrial products during manufacturing operations. The company also manufactures equipment used in the testing and inspection of electronic components as well as technology-based systems for UV curing and surface treatment processes. Headquartered in Westlake, Ohio, Nordson has direct operations and sales support offices in more than 30 countries. Visit Nordson on the web at, or Facebook.

Asymtek Nordson BV c/o NESG Deutschland

Nordson ASYMTEK, a world leader in precision automated fluid dispensing, conformal coating, and jetting technologies, designs and manufactures a full line of dispensing and coating systems, supported by a global applications and service network. Recognized for its innovative equipment and excellent service, Nordson ASYMTEK continues to offer advanced dispensing solutions for a range of precision assembly processes. These include semiconductor packaging, printed circuit boards, LEDs, flat panel displays, medical and biotechnical devices, and solar and photovoltaic products. Nordson ASYMTEK is an ISO 9001:2008 certified company and has received numerous awards for its service excellence and product innovations. For more information visit,, or

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