TSVs: Copper, Silicon, And CTE Mismatch


As previous articles in this series have discussed, advanced packages introduce new materials and new reliability concerns. Diffusion into solder bumps can create brittle, high resistance, intermetallic compounds. Heat transfer through an interposer can degrade the lifetime of even cool, low power chips. Still, through-silicon vias are unique in that they cut directly through the integrated cir... » read more

Next Challenge: Contact Resistance


In chip scaling, there is no shortage of challenges. Scaling the finFET transistor and the interconnects are the biggest challenges for current and future devices. But now, there is another part of the device that’s becoming an issue—the contact. Typically, the contact doesn’t get that much attention, but the industry is beginning to worry about the resistance in the contacts, or conta... » read more

ASML To Buy Hermes


Looking to expand into new markets, ASML Holding has entered into an agreement to acquire e-beam wafer inspection specialist Hermes Microvision (HMI) in a cash transaction valued at 2.75 billion euros (US$3.08 billion). With the proposed acquisition of Taiwan’s HMI, ASML will enter two new markets—-wafer inspection as well as mask inspection for extreme ultraviolet (EUV) lithography. In ... » read more

The Week In Review: Manufacturing


MEMS manufacturing A*STAR’s Institute of Microelectronics (IME) in Singapore has launched its third consortium to develop MEMS technologies. This would allow MEMS sensor devices to achieve better performance, higher power efficiency and a smaller form factor. The MEMS Consortium III consists of the following companies: Applied Materials, Coventor, Delta Electronics, GlobalFoundries, InvenS... » read more

Lawyers, Insurance And Self-Driving Cars


Self-driving cars are drawing semiconductor companies into legal and regulatory issues for the first time, adding a new level of scrutiny on cutting-edge chip technology. It also opens up a whole new field for legal interpretation, case law, and regulation. While most liability cases in the past never crossed below the system vendor/supplier level, that could change with autonomous vehic... » read more

The Week In Review: Manufacturing


Fab tools Thermo Fisher Scientific and FEI have announced that their boards of directors have unanimously approved Thermo Fisher’s acquisition of FEI for $107.50 per share in cash. The transaction represents a purchase price of approximately $4.2 billion. In a video, Aki Fujimura, chief executive of D2S, recaps the emerging mask and lithography trends presented at the recent Photomask Ja... » read more

The Trouble With MEMS


The advent of the Internet of Things will open up a slew of new opportunities for MEMS-based sensors, but chipmakers are proceeding cautiously. There are a number of reasons for that restraint. Microelectromechanical systems are difficult to design, manufacture and test, which initially fueled optimism in the MEMS ecosystem that this market would command the same kinds of premiums that analo... » read more

Blog Review: May 25


As a prelude of drone delivery, shipping company DHL set up a carbon fiber tilt-rotor to ferry packages between two villages in the Alps, in this week's top five tech picks from Ansys' Bill Vandermark. Plus, IBM's phase-change memory, see-through wood that's stronger than glass, and perhaps a Babel fish. There have been considerable investments in new memories, but getting to them won't be a... » read more

RC Delay: Bottleneck To Scaling


R = resistance — the difficulty an electrical current has in passing through a conducting material. C = capacitance — the degree to which an insulating material holds a charge. RC delay = the delay in signal speed through the circuit wiring as a result of these two effects. RC delay is important because it can become a significant obstacle to continued downward scaling of logic and... » read more

How To Make 3D NAND


In 2013, Samsung reached a major milestone in the IC industry by shipping the world’s first 3D NAND device. Now, after some delays and uncertainty, Intel, Micron, SK Hynix and the SanDisk/Toshiba duo are finally ramping up or sampling 3D NAND. 3D NAND is the long-awaited successor to today’s planar or 2D NAND, which is used in memory cards, solid-state storage drives (SSDs), USB flash dr... » read more

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