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NEO Semiconductor boosts 3D X-DRAM with floating body cell

Wednesday, May 15, 2024

NEO Semiconductor, a developer of technologies for 3D NAND flash and DRAM memory, has announced a Floating Body Cell Mechanism to boost the performance of 3D X-DRAM.

Andy Hsu, Founder & CEO presented Technology CAD (TCAD) simulation results for NEO’s 3D X-DRAM during the 16 IEEE International Memory Workshop (IMW) 2024 which is being held in Seoul, Republic of Korea.

Neo Semiconductor revealed a unique performance boosting mechanism called Back-gate Channel-depth Modulation (BCM) for Floating Body Cell that can increase data retention by 40,000X and sensing window by 20X.

“Unlike the traditional 2D Floating Body Cell that uses body effect to change the cell current, our BCM mechanism employs a back-gate voltage to modulate the channel depth. This patented invention increases the sensing window and data retention significantly, that will result in faster and more reliable DRAM, and reduce the refresh frequency to save power,” said Hsu.

NEO Semiconductor’s 3D X-DRAM is a first-of-its-kind 3D NAND-like DRAM cell array structure based on floating body cell technology. It can be manufactured using today’s mature 3D NAND-like process.

Based on Neo’s estimates, 3D X-DRAM technology can achieve 128 Gb density with 300 layers, which is 8 times today’s DRAM density. It can also reduce the chip’s footprint and power consumption.

By: DocMemory
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