tag: DR Yield

Silicon Lifecycle Management Gains Steam
By Laura Peters - 10 Dec, 2024 - Comments: 0

Silicon lifecycle management (SLM) is gaining significant traction, driven increasingly by stringent reliability requirements for safety-critical devices in aerospace, medical, and automotive. Improving reliability has been a discussion point for years, but it has become especially important with the use of chips designed at leading-edge nodes in both mission- and safety-critical application... » read more

Yield Management Embraces Expanding Role
By Laura Peters - 12 Nov, 2024 - Comments: 0

Competitive pressures, shrinking time-to-market windows, and increased customization are collectively changing the dynamics and demands for yield management systems, shifting left from the fab to the design flow and right to assembly, packaging, and in-field analysis. The basic role of yield management systems is still expediting new product introductions, reducing scrap, and delivering grea... » read more

Metrology Advances Step Up To Sub-2nm Device Node Needs
By Laura Peters - 15 Oct, 2024 - Comments: 0

Metrology and inspection are dealing with a slew of issues tied to 3D measurements, buried defects, and higher sensitivity as device features continue to shrink to 2nm and below. This is made even more challenging due to increasing pressure to ramp new processes more quickly. Metrology tool suppliers must exceed current needs by a process node or two to ensure solutions are ready to meet tig... » read more

Defect Challenges Grow At The Wafer Edge
By Laura Peters - 10 Sep, 2024 - Comments: 0

Reducing defects on the wafer edge, bevel, and backside is becoming essential as the complexity of developing leading-edge chips continue to increase, and where a single flaw can have costly repercussions that span multiple processes and multi-chip packages. This is made more difficult by the widespread rollout of such processes as hybrid bonding, which require pristine surfaces, and the gro... » read more

Promises and Perils of Parallel Test
By Anne Meixner - 10 Sep, 2024 - Comments: 1

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

Standardizing Defect Coverage In Analog/Mixed Signal Test
By Gregory Haley - 10 Sep, 2024 - Comments: 0

A newly drafted IEEE standard will bring more consistency to defect metrics in analog/mixed (AMS) designs, a long-overdue step that has become too difficult to ignore in the costly heterogeneous assemblies being deployed inside of data centers and mobile devices. Standardizing analog is no simple feat due to the legacy approach to AMS design, and this is not the first attempt at improving te... » read more

Metrology And Inspection For The Chiplet Era
By Gregory Haley - 06 Aug, 2024 - Comments: 0

New developments and innovations in metrology and inspection will enable chipmakers to identify and address defects faster and with greater accuracy than ever before, all of which will be required at future process nodes and in densely packed assemblies of chiplets. These advances will affect both front-end and back-end processes, providing increased precision and efficiency, combined with a... » read more

Leveraging Machine Learning in Semiconductor Yield Analysis
By DR Yield - 09 Jul, 2024 - Comments: 0

Searching through wafer maps looking for spatial patterns is not only a very time-consuming task to be done manually, it’s also prone to human oversight and error, and nearly impossible in a large fab where there are thousands of wafers a day being processed. We developed a tool that applies automatic spatial pattern detection algorithms using ML, parametrizing pattern recognition and clas... » read more

Using Predictive Data Analytics In Manufacturing
By Dieter Rathei - 11 Jun, 2024 - Comments: 0

Data is said to be the gold of the 21st century, but is that true? Even with trillions of lines of data in your database, you won’t be mining any gold – unless you understand what the data means. Here’s what’s happening all around the semiconductor industry: we have far too much data. The problem is that the value you need is hidden in the data, and to mine the gold from it, you need to... » read more

3D Metrology Meets Its Match In 3D Chips And Packages
By Laura Peters - 11 Jun, 2024 - Comments: 0

The pace of innovation in 3D device structures and packages is accelerating rapidly, driving the need for precise measurement and control of feature height to ensure these devices are reliable and perform as expected throughout their lifetimes. Expansion along the z axis is already well underway. One need look no further than the staircase-like 3D NAND stacks that rise like skyscrapers to p... » read more

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