Author's Latest Posts


How Die Dimensions Challenge Assembly Processes


Multi-die assemblies are becoming more common and more complex due to technology advancements and market demands, but differing die dimensions are making this process increasingly challenging. To fully enable a multi-chiplet ecosystem, standardized component handling and interfaces are needed. The underlying concept is similar to LEGO blocks that simply snap together, yet it's nowhere near t... » read more

Promises and Perils of Parallel Test


Testing multiple devices at the same time is not providing the equivalent reduction in overall test time due to a combination of test execution issues, the complexity of the devices being tested, and the complex tradeoffs required for parallelism. Parallel testing is now the norm — from full wafer probe DRAM testing with thousands of dies to two-site testing for complex, high-performance c... » read more

Driving Cost Lower and Power Higher With GaN


Gallium nitride is starting to make broader inroads in the lower-end of the high-voltage, wide-bandgap power FET market, where silicon carbide has been the technology of choice. This shift is driven by lower costs and processes that are more compatible with bulk silicon. Efficiency, power density (size), and cost are the three major concerns in power electronics, and GaN can meet all three c... » read more

Delivering On Power During HPC Test


The industry’s insatiable need for power in high-performance computing (HPC) is creating problems for test cells, which need to deliver very high currents at very consistent voltage levels through the power delivery network (PDN). In response, ATE, wafer probe, and contactor vendors are introducing some innovative approaches and test procedures that can ensure robust power delivery to ATE pro... » read more

Precise Control Needed For Copper Plating And CMP


Chipmakers are relying on machine learning for electroplating and wafer cleaning at leading-edge process nodes, augmenting traditional fault detection/classification and statistical process control in order to extend the usefulness of copper interconnects. Copper is well understood and easy to work with, but it is running out of steam. At 5nm and below, copper plating tools are struggling to... » read more

What’s Missing In Test


Experts at the Table: Semiconductor Engineering sat down to discuss how functional test content is brought up at first silicon, and the balance between ATE and system-level testing, with Klaus-Dieter Hilliges, V93000 platform extension manager at Advantest Europe; Robert Cavagnaro, fellow in the Design Engineering Group at Intel (responsible for manufacturing and test strategy of data center... » read more

Doing More At Functional Test


Experts at the Table: Semiconductor Engineering sat down to discuss the increasing importance of functional test, especially in high-performance computing, with Klaus-Dieter Hilliges, V93000 platform extension manager at Advantest Europe; Robert Cavagnaro, fellow in the Design Engineering Group at Intel (responsible for manufacturing and test strategy of data center products); Nitza Basoco, tec... » read more

What Works Best For Chiplets


The semiconductor industry is preparing for the migration from proprietary chiplet-based systems to a more open chiplet ecosystem, in which chiplets fabricated by different companies of various technologies and device nodes can be integrated in a single package with acceptable yield. To make this work as expected, the chip industry will have to solve a variety of well-documented technical an... » read more

Progress In Wafer And Package Level Defect Inspection


The technology to enable sampling and the need for more metrology and inspection data in a production setting have aligned just in time to address the semiconductor industry’s newest and most complex manufacturing processes. In both wafer and assembly manufacturing, engineering teams have long relied on imaging tools to measure critical features and to inspect for defects after specific pr... » read more

Strategies For Detecting Sources Of Silent Data Corruption


Engineering teams are wrestling with how to identify the root causes of silent data corruption (SDC) in a timely and cost-effective way, but the solutions are turning out to be broader and more complex than simply fixing a single defect. This is particularly vexing for data center reliability, accessibility and serviceability (RAS) engineering teams, because even the best tools and methodolo... » read more

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