Characterization and analysis of graded index optical waveguides for the realization of low-power, high-density, and high-speed optical link

2012 ◽  
Author(s):  
Hsiang-Han Hsu ◽  
Takaaki Ishigure ◽  
Shigeru Nakagawa
Keyword(s):  
Low Power ◽  
Optical Waveguides ◽  
High Speed ◽  
High Density ◽  
Optical Link ◽  
Graded Index

3D Integration of Wide IO Memory Cube Stacking to 28 nm Logic Chip with High Density TSV through a Fabless Supplier Chain

2012 ◽  
Vol 2012 (1) ◽  
pp. 000018-000022
Author(s):  
S.Q. Gu ◽  
D.W. King ◽  
V. Ramachandran ◽  
B. Henderson ◽  
U. Ray ◽  
...  
Keyword(s):  
Low Power ◽  
High Speed ◽  
High Density ◽  
Temperature Cycle ◽  
Large Bandwidth ◽  
Supplier Chain ◽  
Chip Fabrication ◽  
Logic Process ◽  
Detrimental Impact ◽  
28 Nm

Wide IO memory has higher IO–count (up to 16×) than typical low power DDR memory, which could enable higher system bandwidth at low power. Wide IO DRAM can be stacked as Micro Pillar Grid Array (MPGA) cubes [1], which will provide high memory density for the system. With the high number (∼1200) of connections to the MPGA, a direct face to back stack (3D) to logic chip with high density TSV is the most efficient approach. To utilize the extra large bandwidth, the logic chip containing high speed processors requires logic chip fabrication in advanced node devices. In this paper, we report the–demonstration of a 2-memory chip JEDEC standard wide IO MPGA stacking on logic chip through a fabless supplier chain. A successful integration of via middle through Si via (TSV) to 28 nm logic process has been demonstrated with minimum impact to logic devices. The final package showed good TSV and ubump integrity. The wide IO memory is functional post stacking. In addition, the early reliability data for TSV and ubump showed no detrimental impact through temperature cycle and high temperature storage.

Development of ATC for High Speed and High Density Commuter Line

2007 ◽  
Vol 127 (10) ◽  
pp. 1033-1042
Author(s):  
Tamio Okutani ◽  
Nobuyuki Nakamura ◽  
Hisato Araki ◽  
Shouji Irie ◽  
Hiroki Osa ◽  
...  
Keyword(s):  
High Speed ◽  
High Density
Sign in / Sign up

Export Citation Format

Share Document