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Chip Options Sought as Costs Rise

SOI gets upgrade amid consolidation
10/8/2014 07:55 AM EDT
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miche1
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Re: So who will use FD- or ET-SOI?
miche1   10/13/2014 12:22:15 PM
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Thanks for the correction.

Of course the difference with PDSOI is the thin film use.

AKH0
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Re: So who will use FD- or ET-SOI?
AKH0   10/13/2014 12:12:09 PM
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I think you meant extremely "thin".

miche1
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Re: So who will use FD- or ET-SOI?
miche1   10/13/2014 11:54:52 AM
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Indeed FDSOI is using extremely thick Silicon and BOX which allows to control the Short Channel effects while providing a high level of performance. Results presented at the last 2014 IEEE S3S Conference show the competing device performances of the late STMicro UTBB FDSOI Process when compared to any FinFET process published data.

ryanbigbed
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Re: So who will use FD- or ET-SOI?
ryanbigbed   10/10/2014 6:03:09 PM
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correct - IBM has been using PDSOI from deveopmentt back at around 250 nm down to 22 nm generations. Also, correct that the OKI FDSOI did not use thinner buried oxied as the new ST process does.  PDSOI process ported more easily from bulk and has been largely used for high performnce. FDSOI is better suited to low power, and lower voltage operation. With scaling to and below 28 nm, the combination of low power and sufficient performance is attractive for mobile devices (high volumes). Allso,over the years there have been advanced im the SOI materials manufacturing by the suppliers such as Sootec and SEH which can provide the required uniformrmity and quaity of the thinn layers on large diameter wafers. If you look at joint pubs at VLSI Tchnology and IDEM you see that even IBM is involved in the development of FDSOI as well as SOI FinFETs (which are a non-planar FDSOI type of device). 

AKH0
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Re: So who will use FD- or ET-SOI?
AKH0   10/10/2014 12:02:28 PM
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Oki was using FDSOI.

 

https://www.oki.com/en/otr/2003/n196/pdf/otr-196-R15.pdf

 

The biggest difference -- other than geometries -- was the use of thick BOX as opposed to thin BOX in the new generations of FDSOI that ST/Samsung and others are offersing.

rick merritt
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Re: So who will use FD- or ET-SOI?
rick merritt   10/10/2014 11:42:51 AM
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@Ryan: I know IBM and AMD and others have used SOI (not FD) for years for Power and x86 chips.

I assume Oki/Casio if using older geomterires over a long time are NOT doing FD-SOI which is still new at STM and still TK from GF and Samsung basically with 28nm and beyond.

 

 

ryanbigbed
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Re: So who will use FD- or ET-SOI?
ryanbigbed   10/10/2014 10:02:22 AM
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Yes - the Casio / Oki was well publicized as FDSOI, and Samsung and ST announced a licensing agreement for FDSOI not long ago. 

Violoncelles
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Re: So who will use FD- or ET-SOI?
Violoncelles   10/10/2014 3:09:18 AM
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Are you sure it is FD-SOI (Fully Depleted SOI ) ? and not PD-SOI (Partially Depleted SOI) that IBM and AMD have used for quite a while now .

brucebdoris
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Re: So who will use FD- or ET-SOI?
brucebdoris   10/9/2014 7:48:47 PM
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Lots of exciting progress presented at S3S

bec0
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Re: So who will use FD- or ET-SOI?
bec0   10/9/2014 4:06:17 PM
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Logic with monolithic 3d should happen very soon. Now that monolithic 3d can be constructed with the existing transistors (FinFet or FDSOI), we can enjoy the lower power and faster circuits due to the shorter interconnects, mostly get rid of those pesky and space/energy consuming buffers, and gain 1-2 nodes of scaling using the same 'ol fab equipment. Plus, with the high density of vertical and short interconnects, pain-less copy exact logic redundancy is now possible.

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