Presentation 2001/12/13
Electric characteristics evaluation of LSI devices by using Scanning Probe Microscope
Kazuaki KONDO, Seigen OTANI, Chikako YOSHIDA,
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Abstract(in English) A ferro-electric random access memory or FeRAM is a non-volatile memory combining both ROM and RAM advantages. To promote making of a high density FeRAM, the defective bit evaluation technology of the device is needed. We constructed a new evaluation system, which was able to measure the electric characteristics of a single bit cell capacitor. In the system, a top electrode of a capacitor was contacted electrically by the cantilever of a scanning probe microscope (SPM). An independent manual micro-probe was set-up adjacent to the scanner of SPM to contact a bottom electrode. A pad for a bottom electrode was made with focused ion beam (FIB) equipment. The size of the contact pad was optimized to minimize the parasitic capacitance. In order to measure the electric characteristics of a cell capacitor with a small contact hole, we decreased the depth of the contact hole by filling it with tungsten using FIB. As a result, the measurement of the single bit capacitor became possible, and it has promoted failure analysis of actual devices.
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Keyword(in English) SPM / FeRAM / failure analysis / single bit / hysteresis
Paper # CPM-117,ICD-169
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Conference Date 2001/12/13(1days)
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Registration To Integrated Circuits and Devices (ICD)
Language JPN
Title (in Japanese) (See Japanese page)
Sub Title (in Japanese) (See Japanese page)
Title (in English) Electric characteristics evaluation of LSI devices by using Scanning Probe Microscope
Sub Title (in English)
Keyword(1) SPM
Keyword(2) FeRAM
Keyword(3) failure analysis
Keyword(4) single bit
Keyword(5) hysteresis
1st Author's Name Kazuaki KONDO
1st Author's Affiliation Silicon technology lab., Fujitsu Laboratory()
2nd Author's Name Seigen OTANI
2nd Author's Affiliation Silicon technology lab., Fujitsu Laboratory
3rd Author's Name Chikako YOSHIDA
3rd Author's Affiliation Silicon technology lab., Fujitsu Laboratory
Date 2001/12/13
Paper # CPM-117,ICD-169
Volume (vol) vol.101
Number (no) 518
Page pp.pp.-
#Pages 7
Date of Issue