Optical surface measurement of HDI microvias
AT&S (Austria Technology & System Engineering Corp.), market leader in Europe and among the world´s largest and technically most advanced producers, benefits from the optical measurement device InfiniteFocus. The 3D measurement of certain surface patches such as the diameters of the blind holes is robust, highly accurate and easy to perform. The user selects the region of interest in the optical color image and automatically receives the depth information. This fast and non destructive performance can be operated by semi skilled technicians where required. Even at steep flanks and greatly varying surface reflection properties measurement results up to 10nm vertical resolution are feasible. Analysis capabilities such as profile, area, roughness, volume etc. are provided. Additionally, AT&S benefits from the comprehensive visualization properties as InfiniteFocus is the only 3D measurement instrument that simultaneously captures the entire surface topographic information in combination with its registered color information. Time, resources and costs are saved due to the robust optical 3D surface measurement.
Quality assurance throughout robust surface measurement is a growing demand in the HDI microvia technology sector, a high-tech segment in the sector of printed circuit boards and very attractive due to its high connection density. This leading edge technology allows the production of thin, highly complex and multi-layered printed circuit boards leading to more reliable and durable electronic devices.