Processes and Technology

SSEC: Wet Etch Process for TSV Reveal

SSEC’s wet TSV reveal process achieves -/+ 0.7% Si thickness uniformity under the appropriate post grinding conditions with fast throughput. The two-step process starts with a spin etch for a smooth, fast etch at 10µm/min. The etch is stopped 2µm above the TSVs and then finishes with a selective etch...

Akrion Systems: Vacuum Prime and Dry

Akrion Systems’ vacuum prime and drying technology enables the use of a wet immersion method to introduce liquid chemicals or rinse water throughout the entire HAR feature prior to the oxide etching step.  Pulling a vacuum below the saturated vapor pressure of water, draws liquid into the entire feature, enabling...

SETNA: Process for Room Temperature 3D IC Assembly

SETNA, in conjunction with Research Triangle Institute (RTI), has developed a binary alloy (Silver-to-Indium) bonding system for 3D IC assembly that can be compression-bonded at room temperature. Following 3D IC chip stacking, the Ag-In structure is annealed in the solid-state (no melting) to form an Ag₂In interconnect which is stable...

SPTS: Blanket Silicon Etch Process for Via Reveal

The blanket silicon etch process performed on the SPTS Rapier XE achieves an etch rate >8.5µm/min, high selectivity (Si:SiO>150:1), and is ~3-4x faster than competing systems. A unique dual plasma source design creates a uniform etch (<±3%) across a 300mm wafer, which can be “tuned” to compensate for variations in in-coming...

SSEC: WaferEtch TSV Revealer

SSEC’s WaferEtch™ TSV Revealer is a single wafer wet processing platform for 3D IC and interposer wet etching applications designed to reduce processing and capital equipment costs. The WaferEtch features superior uniformity of silicon thickness (as low as -/+ 0.7%). Testimonial Via reveal is a critical process step in 2.5D...

Lasertec: BGM300

The BGM300 was designed to enable quick and accurate measurement of Through Si Via (TSV) depths, Si wafer thickness, and Remaining Si Thickness (RST) above TSVs – all essential in a managed backside via reveal process flow. Back grinding errors due to “blind” grinding can lead to significant yield loss....

Rudolph Technologies: JetStep S Series Lithography System

As advanced packaging facilities transition their manufacturing from round wafers to square panels, the JetStep S Series Lithography System is fully capable of handling panels up to Gen 3.5 (720x650mm). The system offers high throughput through a large printable exposure and increased productivity through on-the-fly autofocus for thick photoresists. Testimonial...

Polymer filled TSVs, Courtesy of EV Group

Polymer Filled TSVs: Solving the Cu Stress Issue

I’ve been on a quest to find out more about EV Group’s new polymer filled TSVs since they first announced it in September. According to a company press release, NanoFill™ process is said to provide “void-free via filling of very deep trenches and high-aspect ratio (HAR) structures, and is suitable...

The Back Story on Besang’s True 3D ICs

BeSang Inc, a fabless semiconductor company in Beaverton, OR, has been on my 3D IC radar since 2008, when I first edited a 3D technology cover feature in Advanced Packaging Magazine, written by George C. Riley, that included a status report on BeSang’s TRUE 3D ICs™, which had just been...

ASML at Semicon West 2013: SRAM Scaling has Stopped!

We have a guest contribution from Zvi Or-Bach, the President and CEO of MonolithIC 3D Inc. Zvi adds information to his previous blog post: Dimension Scaling and the SRAM Bit-Cell. I just downloaded the ASML presentation from Semicon West2013 site – ASML’s NXE Platform Performance and Volume Introduction. Slide #5...

Atoms Don’t Scale: What is Beyond 7nm (2019)?

We have a guest contribution today from Brian Cronquist, MonolithIC 3D Inc.’s VP of Technology & IP. Brian discusses about MonolithIC 3D Inc.’s participation at Semicon West 2013. Thanks to everybody who came by the Silicon Innovation Forum poster session at SEMICON West 2013. We really enjoyed talking with you about...

Figure 1: Electrografting provides a very strong adhesion between organics and any surface

Alchimer Streamlines Wet Approach

Streamlined and versatile: that’s the impression I came away with after talking to Nao Shoda, senior director of business development and technology, Alchimer, about recent developments to further optimize the companies’ electrografting processes for through silicon via (TSV), isolation, barrier, seed and fill steps. I wrote about them frequently in...