DRIE APPLICATIONS In Corial 210IL.

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Presentation transcript:

DRIE APPLICATIONS In Corial 210IL

ICP-RIE equipment for deep etching applications Corial 210IL 11/24/2018 ICP-RIE equipment for deep etching applications Wide process range for silicon, silicon carbide, glass, sapphire, and quartz deep etch Support time-multiplexed processes (Bosch) in conventional dry etch reactor Smaller wafer pieces up to full 200 mm wafer Corial 210IL DRIE Applications

performances glass drie process on corial 210IL

+30% ETCH RATE IMPROVEMENT OVER STANDARD PROCESS ± 3 % Drie of glass 11/24/2018 > 800 NM/MIN ETCH RATE > 15 SELECTIVITY TO Ni MASK > 100 µm ETCH DEPTH +30% ETCH RATE IMPROVEMENT OVER STANDARD PROCESS ± 3 % UNIFORMITY CATHODE OPTIMIZED FOR Ni MASK CLAMPING NO ROUGHNESS Corial 210IL DRIE Applications

performances SIC drie process on corial 210IL

Sic via etch process with ni mask 11/24/2018 > 1400 NM/MIN ETCH RATE > 20 SELECTIVITY TO Ni MASK SMOOTH SIDEWALLS > 100 µm ETCH DEPTH ± 3 % UNIFORMITY ANISOTROPIC ETCH PROFILE Corial 210IL DRIE Applications

performances Si drie process on corial 210IL with cosma pulse software

COSMA Pulse is a control software that broadens conventional tools’ process capabilities to enable time-multiplexed processes

Cosma pulse description 11/24/2018 Advanced Process Control EASY recipe programation ALL PARAMETERS CAN BE CONTROLLED AND PULSED 10 ms DATA AQUISITION +/-0,1% ACCURACY ON BIAS FINE TUNING Corial 210IL DRIE Applications

Si drie on corial 210IL CORIAL Bosch-like process has 3 steps 11/24/2018 CORIAL Bosch-like process has 3 steps step 1 - Polymer deposition by C4F8 plasma step 2 - Polymer etching  by SF6 plasma step 3 - Silicon etching with 20W of RF power, which was used to increase the silicon etching rate To alternate between each step, COSMA pulse software is required for pulsing consecutively C4F8 gas flow, SF6 gas flow, LF and RF power Corial 210IL DRIE Applications

Corial 210IL DRIE Applications Drie of silicon 11/24/2018 Precise control of the etch profile, fast etch rates, and excellent etch uniformity Corial 210IL DRIE Applications

Drie of silicon Results obtained with 100 mm wafer, 20% Si open area 11/24/2018 Various Aspect Ratios Feature size (µm) Etched depth Aspect ratio Etch rate (µm/min) Mask Selectivity (vs. mask) Ø250 Through wafer 1:2 > 3.0 SiO2 330 Ø100 515 1:5 > 2.9 PR 85 Ø20 280 1:14 > 1.5 155 Ø5 180 1:35 > 1.0 100 Results obtained with 100 mm wafer, 20% Si open area Corial 210IL DRIE Applications

System description Corial 210IL

Corial 210IL DRIE Applications System description 11/24/2018 General View THE MOST COMPACT MACHINE ON THE MARKET ICP source 960 750 360 1570 600 420 390 490 30 % SMALLER FOOTPRINT Corial 210IL DRIE Applications

Corial 210IL DRIE Applications System description 11/24/2018 Detailed View EPD with laser ICP reactor Load lock Pumping system (TMP 500l/s and dry pump 110 m3/h) Chiller / Heater HV and LV power supplies ICP generator (2 Mhz) RF generator (13,56 Mhz) Process controller Corial 210IL DRIE Applications

< 180 s Vacuum robot Shuttle System description Loading 11/24/2018 LOADING TIME Vacuum robot FAST AND REPEATABLE LOAD AND UNLOAD Shuttle EASY EXCHANGE BETWEEN SUBSTRATE SHAPE AND SIZE Corial 210IL DRIE Applications

ICP SOURCE corial 210IL

FAST AND UNIFORM ETCHING ICP source 11/24/2018 CORIAL’s Latest Generation of Reactor Load lock to run fluorinated and chlorinated chemistries in the same process recipe Load lock for stable and repeatable process conditions RF match box with matching range up to 2000 W Uniform temperature control (from -50°C) for best repeatability Hot walls (>250°C) minimize polymer condensation for selective processes Hot walls and retractable liner reduce clean time Retractable liner and shuttle holding to minimize process cross-contamination FAST AND UNIFORM ETCHING Corial 210IL DRIE Applications

ZERO PROCESSES CROSS CONTAMINATION THE LINER FOR HARSH ICP-RIE ICP Source 11/24/2018 Retractable Quartz Liner THE LINER FOR HARSH ICP-RIE PROCESSES EASY LINER replacement by a single person 5 min Liner replacement 4 min Pumping down to 10-4 Tor ZERO CROSS CONTAMINATION 1 min Reactor Venting 5 min Plasma cleaning Corial 210IL DRIE Applications

Shuttle holding approach corial 210IL

Shuttle holding approach 11/24/2018 Portfolio Clamping ring Quartz shuttle Wafers Wafer Moving plate O’rings O’ring Base plate Aluminum table Guaranteed no wafer damage due to SOFT wafer clamping Corial 210IL DRIE Applications

Shuttle holding approach 11/24/2018 Benefits Quick adaptation to sample shape and size Optimum process conditions with NO modification of process chamber Limited cross contamination between processes by using dedicated shuttles Shuttles for single wafer treatment: 1 x 2”, 1 x 3”, 1 x 4”, 1 x 6”, 1 x 8” Shuttles for batch processing : 7 x 2”, 3 x 3” Customized shuttles are available (4” x 4”, 5” x 5”, etc) Corial 210IL DRIE Applications

usability corial 210IL

Process control software 11/24/2018 COSMA COSMA CORIAL OPERATING SYSTEM FOR MACHINE The simplest, most efficient software to develop processes, operate, and maintain CORIAL systems DESKTOP APPLICATION Process Editing I Process Adjustment I Process Operation I Process Tracability I System Maintenance REMOTE CONTROL MOBILE APPLICATION Module & Process Follow-Up I Alarms & Warnings Connected Users NEW 2018 Corial 210IL DRIE Applications

Reprocessing software 11/24/2018 COSMA RS DISPLAY UP TO 4 PARAMETERS FROM A RUN Simple and efficient software to analyze process runs and accelerate process development REMOTE ANALYSIS OF RUNS DRAG AND DROP CURVES TO CHECK PROCESS REPEATABILITY Corial 210IL DRIE Applications

End point detection EPD with laser Real-Time etch rate measurement 11/24/2018 EPD with laser A CCD camera and laser diode, in the same measuring head, enables simultaneous visualization of the wafer surface and the laser beam impact on it. A 20 µm diameter laser spot facilitates the record of interference signals. Real-Time etch rate measurement Real-Time etched depth measurement Corial 210IL DRIE Applications

ICP-RIE equipment for deep etching applications Corial 210IL 11/24/2018 ICP-RIE equipment for deep etching applications Wide process range for silicon, silicon carbide, glass, sapphire, and quartz deep etch Support time-multiplexed processes (Bosch) in conventional dry etch reactor Smaller wafer pieces up to full 200 mm wafer Corial 210IL DRIE Applications