ULTRA The Semiconductor Laser Mask Writer

Heidelberg Instruments

SKU: ULTRA

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DESIGNED TO PRODUCE NON-CRITICAL SEMICONDUCTOR PHOTOMASKS FOR DESIGN NODES DOWN TO 130 NM, AND NON-MANHATTAN DESIGNS

The ULTRA specifically addresses the production of mature semiconductor photomasks. It is a qualified tool at a major semiconductor photomask production group. The ULTRA is used to fabricate semiconductor components for the electronics and automotive industries. These include power management, microcontrollers, LED lighting, the internet-of-things (IoT) and MEMS.

The ULTRA is an economical mask writer solution with all the features and functionality required for high throughput, precision and structure uniformity, and extremely accurate alignment. The standard configuration includes all modules (FX Fast mode, SMIF Pod, etc). The ULTRA can produce structure sizes down to 500 nm at write speeds up 580 mm² per minute, while featuring excellent critical dimension uniformity, image quality, overlay and registration. ULTRA 1 produces masks down to 180 nm nodes. ULTRA 2 will be launched in late 2021 and will target significant improvement in alignment accuracy and exposure quality – aiming at 130 nm design node. ULTRA is a compact system and fits easily into the existing mask shop infrastructure.

Two Models

ULTRA 1 for 180 nm design node; ULTRA 2 for 130 nm design node

High Exposure Quality

Line edge roughness 20 nm; CD uniformity 30 nm; positioning accuracy 40 nm; real-time optical autofocus; custom high numerical aperture (NA) write-lens optimized for laser exposure

High Precision

XY stage fully designed and manufactured by Heidelberg Instruments; full air bearing stage; zero thermal expansion zerodur™ chuck; differential interferometer for position measurement

Precise Second Layer Alignment

Sophisticated correction matrix based on a 2D measurement of the first layer. Compensation of arbitrary local position distortions; 100 nm accuracy

High Throughput

High-speed SLM with high data rate for fast exposure. 150 mm wafer in < 45 minutes

Writing Stability

Closed-loop environmental chamber complies with stringent requirements for semiconductor photomask production; integrated metrology system with flowbox and software corrections compensates for any variations in environmental parameters

Long life-time

Economical high-power DPSS 355 nm laser; 20,000 hours of guaranteed lifetime

Overall Cost of Ownership

Laser power consumption ca. 25.270 EUR/year at 0.2 EUR/kWh, 90% tool operation; other consumables 38.500 EUR/year

Footprint

1.65 m x 2.54 m


Writing performance	QX mode	FX mode
Address grid [nm]	5	10
Line edge roughness [3σ, nm]	20	40
Position accuracy [3σ, nm]	40	100
Overlay [3σ, nm]	30	60
Stitching [3σ, nm]	20	60
2nd layer alignment [3σ, nm]	100	100
CD uniformity [3σ, nm]	30	60
Minimum feature size [nm]	500	700
Write speed [mm² / min]	325	580
Write time for 6″ x 6″ [min]	75	45

Operation
Protocols, standards	SECS / GEM protocols
User interface (software)	SEMI-compliant GUI
Maximum write area	228 x 228 mm²
Substrate size	4″, 5″, 6″, 7″, and 9″ masks

System features
Optics	0.9 NA objective lens; Low-distortion UV optics; Automatic calibration routines
Laser	355 nm high-power solid state laser; Highly economical compared to gas laser
Focus system	Real-time optical autofocus
Alignment	Camera system; Distortion compensation; Field-by-field alignment
Data path	Real-time compression; Scalable hardware concept; Input formats: All standard formats, e.g. GDSII and Jobdeck
Spatial Light Modulator	Frequency 350 kHz; Data rate 2.4 GB/s
Loader	Automatic mask loader with two independent carrier stations

System dimensions	System / Electronic rack
Width [mm]	2730 / 800
Depth [mm]	1650 / 650
Height [mm]	2100 / 1800
Weight [kg]	3400 / 180

Installation requirements
Electrical	400 VAC ± 5%, 50/60 Hz, 32 A
Compressed air	7 - 10 bar (without oil or other residue)

Please note
Specifications depend on individual process conditions and may vary according to equipment configuration. Write speed depends on pixel size and write mode. Design and specifications are subject to change without prior notice