tag: co-planarity

Big Changes In Medical Electronics
By Ed Sperling - 09 Jun, 2025 - Comments: 0

Medical devices are becoming more capable, more complicated, and more deployable in the field rather than in a hospital or a doctor's office. But getting these purpose-built devices into the hands of consumers requires a whole bunch of new challenges, from safeguarding fragile on-board chemistries that can be destroyed by existing chip manufacturing and packaging processes to ensuring the mater... » read more

Benefits And Challenges In Multi-Die Assemblies
By Ed Sperling And Laura Peters - 02 Apr, 2025 - Comments: 0

Experts at the Table: Semiconductor Engineering sat down to discuss chiplets, hybrid bonding, and new materials with Michael Kelly, vice president of Chiplets and FCBGA Integration at Amkor; William Chen, fellow at ASE; Dick Otte, CEO of Promex Industries; and Sander Roosendaal, R&D director at Synopsys Photonics Solutions. What follows are excerpts of that discussion. To view part one of t... » read more

FOPLP Gains Traction in Advanced Semiconductor Packaging
By Gregory Haley - 21 Nov, 2024 - Comments: 1

Fan-Out Panel-Level Packaging (FOPLP) for advanced nodes, once hindered by manufacturability and yield challenges, is emerging as a promising solution to meet the industry’s demands for higher integration densities and cost efficiency. Traditionally, FOPLP has been a go-to solution for cost-sensitive applications in consumer electronics, IoT devices, and mid-tier automotive systems. Its ab... » read more

Balancing Parallel Test Productivity With Yield & Cost
By Anne Meixner - 12 Nov, 2024 - Comments: 0

Parallel test is used for nearly every device produced by fabs and OSATs, but it can reduce yield and increase the cost of test boards and operations. This is a well-understood tradeoff for ensuring consistent test accuracy across multiple sites and reducing test time. Collectively, ATEs and multi-site test boards — DUT interface boards (DIBs), probe cards, and load boards — significantl... » read more

Bump Co-Planarity And Inconsistencies Cause Yield, Reliability Issues
By Karen Heyman - 11 Oct, 2022 - Comments: 0

Bumps are a key component in many advanced packages, but at nanoscale levels making sure all those bumps have a consistent height is an increasing challenge. Without co-planarity, surfaces may not properly adhere. That can reduce yield if the problem is not identified in packaging, or it can cause reliability problems in the field. Identifying those issues requires a variety of process steps... » read more

Growing Challenges With Wafer Bump Inspection
By Ed Sperling - 11 Oct, 2021 - Comments: 1

As advanced packaging goes mainstream, ensuring that wafer bumps are consistent has emerged as a critical concern for foundries and OSATs. John Hoffman, computer vision engineering manager at CyberOptics, talks about the shift toward middle-of-line and how that is affecting inspection and metrology, why there is so much concern over co-planarity and alignment, how variation can add up and creat... » read more

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