New Product Announcement – CoventorMP 1.2

We are very pleased to announce the release of our latest MEMS design software, CoventorMP 1.2. This release has been enriched to improve the accuracy of device models and extend the types of devices that can be modeled. It contains enhanced model construction capabilities, a number of great new analysis functions, some significant performance improvements, advances in 3rd-party support and other exciting new features. read more…

How FinFET Device Performance is Affected by Epitaxial Process Variations

By: Jacky Huang and Yu De Chen

As the need to scale transistors to ever-smaller sizes continues to press on technology designers, the impact of parasitic resistance and capacitance can approach or even outpace other aspects of transistor performance, such as fringing capacitance or source drain resistance. The total resistance in a device is comprised of two components: internal resistance (which is essentially channel resistance) and external resistance (which is the combination of source drain resistance and metal contact resistance). As key feature sizes shrink at advanced technology nodes, external resistance plays an increasingly important role. Simulation-based design-technology co-optimization (DTCO) offers us some insight into the sensitivity of FinFET device performance to changes in process flows that impact external resistance. read more…

Goldilocks Process Windows: Coventor’s Latest SEMulator3D Helps to Determine “Just Right”

One of the tricky bits when launching a new process is figuring out what the process window is.  For anyone new to the concept, the window is the range of variation that’s allowable for a given process parameter. Go outside that range, and a die – or a wafer – or a lot – may fail.

Read full article here

Video: “Process Window Optimization”

David Fried, vice president of computational products at Lam Research, examines increasing process variation and interactions between various types of variation, why different approaches are necessary to improve yield and continue scaling.

How to deal with variation, and interactions between various types of variation.

[Video Attribution: Semiconductor Engineering]

Advanced Patterning Techniques for 3D NAND Devices

By: Yu De Chen, Jacky Huang


Driven by Moore’s law, memory and logic semiconductor manufacturers pursue higher transistor density to improve product cost and performance [1]. In NAND Flash technologies, this has led to the market dominance of 3D structures instead of 2D planar devices. Device density can be linearly increased by increasing stack layer counts in a 3D NAND device [2]. At the same time, patterning scheme optimization can also enhance 3D NAND effective device density. In this discussion, we will analyze various patterning schemes for staircase and slit structures at different TCAT (Terabit Cell Array Transistor) 3D NAND nodes. We will compare these schemes to understand their impact on effective transistor density. The schemes and data used in this study are based upon (or inferred from) tear down reports published by TechInsights®. Variations in patterning schemes, and the resulting virtual structures, were modeled using the SEMulator3D® semiconductor platform. read more…

Node Within A Node

Reducing process margin could provide an entire node’s worth of scaling benefits.

read the full article here


2020 SPIE Advanced Lithography Conference – San Jose, CA – February 23-27, 2020

See us at booth #323/325!


Week In Review: Manufacturing, Test

The Semicon West trade show took place this week in San Francisco. There were a slew of announcements at the event. Applied Materials, Coventor, Intel, KLA and others made various announcements.

read full article here