Manufacturing Bits: July 1


Nanotubes in 4D The California Institute of Technology (Caltech) has continued to advance its efforts in four-dimensional electron microscopy. In 4D microscopy, electrons bombard a sample. Each electron scatters off the sample. This produces an image at just a femtosecond in duration. Then, millions of the images are stitched together, which, in turn, produces a digital movie in 4D. [cap... » read more

Manufacturing Bits: Jan. 28


Spintronics gains traction The field of spintronics is gaining interest. The technology could enable a new class of spin-based devices, which combine the switching speeds of logic and the non-volatility of memory. Controlling the magnetism by means of electric fields is the key for future devices, but the ability to switch ferromagnetism technology at room temperature is challenging. Helmho... » read more

Memory Gets Smarter


By Ed Sperling Look inside any complex SoC these days and the wiring congestion around memory is almost astounding. While the number of features on a chip is increasing, they are all built around the same memory modules. Logic needs memory, and in a densely packed semiconductor, the wires that connect the myriad logic blocks are literally all over the memory. This is made worse by the fact ... » read more

3D-IC Testing With The Mentor Graphics Tessent Platform


Three-dimensional stacked integrated circuits (3D-ICs) are composed of multiple stacked die, and are viewed as critical in helping the semiconductor industry keep pace with Moore's Law. Current integration and interconnect methods include wirebond and flip-chip and have been in production for some time. 3D chips connected via interposers are in production at Xilinx, Samsung, IBM, and Sematec... » read more

Straight Talk On 3D TSVs


By Mark LaPedus Semiconductor Manufacturing & Design sat down to discuss 3D device challenges and applications with John Lau, a fellow at the Industrial Technology Research Institute (ITRI), a research organization in Taiwan. SMD: What is ITRI doing in 3D TSVs? Lau: At ITRI we have developed the world’s first Applied Materials’ 300mm (3D TSV) integration line. The line was comple... » 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

New 3D Stacking Techniques Emerge


By Pallab Chatterjee To take advantage of the capabilities of the new technologies, design and circuit architectures in the future will have to be closely coupled with the basic device creation. That shift was the subject of a special session at the recent IEDM conference focusing on the confluence of technology and design. One such area under discussion involved 3D ICs. While a lot of disc... » read more

Preparing For 3D IC Stacking


By David Lammers Through-silicon vias (TSVs) are in various stages of late development, but design and manufacturing challenges remain before companies can gain the full benefits of the third dimension. Two camps are pushing hard to introduce TSVs—the design community and the manufacturing equipment companies. The initial goal is to connect graphics memories to graphics processors in mobi... » read more

Stressing Over 3D


By David Lammers Pol Marchal recalls putting a stacked 3D prototype on his desk at IMEC in Leuven, Belgium, last year, which a visitor picked up and examined two months later. “I don’t think this chip will work,” the visitor said, causing Marchal, principal scientist at IMEC’s 3D system integration program, to put the stacked die under a microscope. Sure enough, Pol found that mechanic... » read more

3D Integration: Extending Moore’s Law Into The Next Decade


By Cheryl Ajluni At the 46th Design Automation Conference in San Francisco last month, attention turned to a discussion of how to extend the momentum of Moore’s Law into the next decade. One plausible solution, according to Philippe Magarshack, the general manager of Central CAD & Design Solutions at STMicroelectronics, is 3D stacking for complex System-on-Chips (SoCs). The concept of 3... » read more

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