G450C To Align Vendors During 450mm Transition


By David Lammers Innovation and synchronization among multiple companies do not often go hand in hand. But for the 450mm wafer transition to provide its full benefits, chip makers and their suppliers will need to do more than a simple wafer size scale up. That may lead the Global 450 Consortium (G450C) to serve as the proving ground for efforts to more closely match the electrical results o... » read more

What’s After NAND Flash?


By Mark LaPedus For years, many have predicted the end of flash memory scaling, particularly NAND, but the technology continues to defy the odds as it moves down the process curve. Still, there are signs that the floating gate structure in today’s flash memory is on its last legs. The floating gate is seeing an undesirable reduction in the control gate to capacitive coupling ratio. And ... » read more

Flowing Copper


By Richard Lewington If you were to slice up a microchip and take a look (you’d need a really powerful microscope, I'm afraid) you would see what looks like a nanoscale layer cake. All the active circuit elements—transistors, memory cells, etc.—are on the bottom. The other 90% of the chip is a maze of tiny copper wires, which we call interconnects. The history of chip developme... » read more

Capping Tools Tame Electromigration


By Mark LaPedus The shift towards the 28nm node and beyond has put the spotlight back on the interconnect in semiconductor manufacturing. In chip scaling, the big problem in the interconnect is resistance-capacitance (RC). Another, and sometimes forgotten, issue is electromigration. “Electromigration gets worse in device scaling,” said Daniel Edelstein, an IBM Fellow and manager of BE... » read more

The New Mobility Era


By Kathryn Ta Transistors are the fundamental building blocks out of which all modern electronic devices are built. Invented in the early 1950s, transistors are the semiconductor switches that control and amplify electronic signals. As demand has grown over the years for greater performance from these devices, chipmakers have responded by packing wafers with twice as many of the transistors th... » read more

Challenges Mount For Interconnect


By Mark LaPedus There are a plethora of chip-manufacturing challenges for the 20nm node and beyond. When asked what are the top challenges facing leading-edge chip makers today, Gary Patton, vice president of the Semiconductor Research and Development Center at IBM, said it boils down to two major hurdles: lithography and the interconnect. The problems with lithography are well documented.... » read more

The Future Of Manufacturing


Semiconductor Manufacturing & Design's Mark LaPedus talks with Randhir Thakur, general manager of Applied Materials' Silicon Systems Group, about what's changing in the foundries, in the equipment necessary to create ICs, and in the structures and materials used in those ICs. [youtube vid=y_b5G6J6UwU] » read more

Options And Hurdles Come Into Focus For 3D Stacking


By Mark LaPedus The initial round of stacked 2.5D and 3D chips based on through-silicon vias (TSVs) has emerged in the market. There are other 2.5D/3D chips in the pipeline, but it’s taking longer than expected to bring these devices into production. There are a range of design, manufacturing, supply chain and cost challenges associated with 2.5D/3D designs. The enormous risk to bring ... » read more

The Hidden Costs Of Directed Self-Assembly


By Mark LaPedus Directed self-assembly (DSA) has been billed by some as a potential paradigm shift in semiconductor manufacturing, but it may not turn out to be quite the panacea its proponents suggest—or at least not yet. There are many questions surrounding DSA, an alternative lithography technology that makes use of block copolymers to enable fine pitches. Key among those questions ar... » read more

The 28nm Foundry Crunch


By Mark LaPedus Faced with huge and unforeseen demand at the 28nm node, leading-edge foundries are scrambling to play catch-up and are boosting their fab capacities at a staggering pace. But analysts warn that 28nm foundry capacity will be tight throughout 2012, and perhaps into 2013, putting some chipmakers in a pinch. Many blame the 28nm foundry capacity shortfall on a combination of t... » read more

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