Keith Best

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Keith Best is the director of product development, lithography, at Onto Innovation.

Author's Latest Posts

The Long Climb: Bringing Through Glass Vias (TGV) To High-Volume Manufacturing

By Keith Best - 15 Oct, 2024 - Comments: 0

The semiconductor industry is a land of peaks and valleys. It’s a place where each innovation represents the culmination of a long and often difficult climb to the summit. In the case of glass substrates, the peak of the mountain is in sight. The arrival of glass substrates comes at an opportune time, as the industry eyes new process innovations to meet the incredible demand for high perfo... » read more

The Glass Substrate Question: When Will It Replace Copper Clad Laminate?

By Keith Best - 12 Sep, 2023 - Comments: 0

"When will glass replace copper clad laminate on advanced IC substrates?" That’s a question many on the heterogeneous integration (HI) side of the semiconductor industry are asking. Unfortunately, the answer is not straightforward. But before we get to answering that, let’s take an advanced IC substrate (AICS) refresher. In other words, how did we get to the point where glass substrat... » read more

Addressing Copper Clad Laminate Processing Distortion Using Overlay Corrections

By Keith Best - 11 Jul, 2023 - Comments: 0

All great voyages must come to an end. Such is the case with our series on the challenges facing the manufacturing of advanced IC substrates (AICS), the glue holding the heterogeneous integration ship together. In our first blog, we examined how cumulative overlay drift from individual redistribution layers could significantly increase overall trace length, resulting in higher interconnect res... » read more

Addressing Yield Challenges In Advanced IC Substrate (AICS) Packaging

By Keith Best - 09 May, 2023 - Comments: 0

No matter how you get your news, it seems like everyone is talking about AI – and it’s either going to usher in a new era of productivity or lead to the end of humankind itself. Regardless, the AI era is here, and it’s just beginning to have an impact on our lives, our jobs and our future. To meet the rigorous demands of AI – along with high-performance compute, 5G and electric vehic... » read more

Addressing Total Overlay Drift In Advanced IC Substrate (AICS) Packaging

By Keith Best - 07 Mar, 2023 - Comments: 0

For years, many in the semiconductor industry have focused on the march toward advanced nodes. As these nodes have decreased in size, the size of input/output (I/O) bumps on the chip has grown smaller. As these bumps shrink, their ability to mate directly to printed circuit boards (PCB) diminishes, which, in turn, leads to the need for an intermediary substrate. Enter the advanced IC substrate ... » read more