NAND Flash Targets 1,000 Layers


The chip industry is pushing to quadruple the stack height of 3D NAND flash from 200 layers to 800 layers or more over the next few years, using the additional capacity will help to feed the unending need for more memory of all types. Those additional layers will add new reliability issues a number of incremental reliability challenges, but the NAND flash industry has been steadily increasin... » read more

Chip Industry Technical Paper Roundup: Nov. 25


New technical papers recently added to Semiconductor Engineering’s library: [table id=386 /] » read more

Chip Industry Week In Review


SK hynix started mass production of 1-terabit  321-high NAND, with availability scheduled for the first half of next year. Rapidus will receive an additional ¥200 billion yen ($1.28B) from the Japanese government beginning in fiscal year 2025, reports Nikkei. This is on top of ¥920 billion yen ($5.98B) Rapidus has already received from the government in support of its goal to reach commer... » read more

Analysis And Design Of Dual-Layer TFTs (Oregon State Univ., Applied Materials)


A new technical paper titled "Dual-Layer Thin-Film Transistor Analysis and Design" was published by researchers at Oregon State University and Applied Materials. Abstract "A set of analytical equations is formulated for the analysis and design of a dual-layer thin-film transistor (TFT). For a given TFT structure, in which each channel layer thickness is specified, drain current is calculate... » read more

Hybrid Bonding Makes Strides Toward Manufacturability


Hybrid bonding is gaining traction in advanced packaging because it offers the shortest vertical connection between dies of similar or different functionalities, as well as better thermal, electrical and reliability results. Advantages include interconnect scaling to submicron pitches, high bandwidth, enhanced power efficiency, and better scaling relative to solder ball connections. But whil... » read more

Americas Chip Funding Energizes Industry


This is the second in a series of articles tracking government chip investments. See part one here (global),  part 3 covering EMEA is here and Asia here. Since the first announcement of a non-binding preliminary memorandum of terms with BAE Systems in December 2023, the U.S. Department of Commerce has rolled out comprehensive plans to support more than a dozen companies in order to shore up... » read more

Optimizing Wafer Edge Processes For Chip Stacking


Stacking chiplets vertically using short and direct wafer-to-wafer bonds can reduce signal delay to negligible levels, enabling smaller, thinner packages with faster memory/processor speeds and lower power consumption. The race is on to implement wafer stacking and die-to-wafer hybrid bonding, now considered essential for stacking logic and memory, 3D NAND, and possibly multi-layer DRAM stac... » read more

New Materials Are in High Demand


Materials suppliers are responding to the intense pressures to improve power, performance, scaling, and cost issues, which follows a long timeline from synthesis to development and high volume manufacturing in fabs. The advances in machine learning help present a wide field of candidates, which engineers then narrow to potential use. When building standard logic semiconductor chips, the prim... » read more

Chip Industry Week in Review


The Biden-Harris Administration announced preliminary terms with HP for $50 million in direct funding under the CHIPs and Science Act to support the expansion and modernization of HP’s existing microfluidics and microelectromechanical systems (“MEMS”) facility in Corvallis, Oregon. CHIPS for America launched the CHIPS Metrology Community, a collaborative initiative designed to advance ... » read more

Chip Industry Week in Review


Okinawa Institute of Science and Technology proposed a new EUV litho technology using only four reflective mirrors and a new method of illumination optics that it claims will use 1/10 the power and cost half as much as existing EUV technology from ASML. Applied Materials may not receive expected U.S. funding to build a $4 billion research facility in Sunnyvale, CA, due to internal government... » read more

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