VR Lithography Training: Rehearsing High-Precision Semiconductor Procedures Before Touching the Tool

Relevant case studies

Blog post: 11/09/2026 2:15 pm

Author: Spark Team

VR Lithography Training: Rehearsing High-Precision Semiconductor Procedures Before Touching the Tool

Lithography equipment sits at the heart of advanced semiconductor manufacturing. VR can provide engineers with a digital environment for learning complex operating and maintenance sequences before approaching the physical tool, while AR can deliver contextual guidance during authorised service and inspection tasks.

Precision Manufacturing Requires Precision Training

Photolithography is central to semiconductor device fabrication, involving processes such as resist application, alignment, exposure, development and stripping. OSHA's semiconductor process guidance identifies photolithography as a core part of device fabrication.

At advanced manufacturing nodes, the equipment supporting lithography represents an extraordinary concentration of precision engineering.

Training technicians on such systems creates an obvious challenge: people need hands-on familiarity, yet access to the actual equipment may be constrained by production priorities, safety requirements and system availability.

Immersive technology offers an alternative place to begin.

A Digital Twin as a Training Environment

A VR training model does not necessarily need to reproduce every internal physical process of a lithography system. Instead, its level of detail can be determined by the procedure being taught.

For an operator, the important elements might include interface familiarisation, material flow, alarms and recovery sequences. For a service engineer, the application could model maintenance panels, service locations, subsystem access and component replacement procedures.

The important point is that the simulation is built around the learning objective.

Practising a Procedure Before Equipment Access

Imagine a new service engineer learning an approved maintenance procedure.

Inside VR, the technician approaches a virtual representation of the machine and receives an initial work instruction. They must identify the relevant system area, confirm the tool state and perform the procedure in the correct sequence.

The simulation might require them to:

1. review the work instruction;

2. identify the correct equipment module;

3. confirm prerequisite conditions;

4. select required PPE and tooling;

5. open the correct service access;

6. identify the component;

7. follow the approved removal sequence;

8. install or inspect the replacement;

9. perform verification checks; and

10. return the equipment to the correct final state.

If the learner attempts a later stage before completing a critical prerequisite, the system can flag the mistake or allow the scenario to continue and incorporate the consequence into the assessment.

Learning Equipment Before It Exists

This is not simply a theoretical concept. ASML has publicly described using VR and AR to allow its teams to manipulate designs and learn how to maintain systems, in some instances years before the physical machines exist.

That model has important implications for semiconductor manufacturers and equipment suppliers.

Training preparation can potentially move further upstream. Once sufficiently accurate engineering data is available, digital training assets can start being developed alongside equipment introduction rather than waiting for installation to finish.

AR at the Physical Tool

Once technicians progress from simulation to the real machine, AR can perform a different role.

An authorised technician could look at a service area and receive contextual information identifying the next relevant inspection point or component.

AR guidance might include:

• 3D component highlights;

• step numbers;

• approved tool information;

• component orientation;

• reference images;

• warning messages;

• inspection criteria; and

• remote collaboration tools.

ASML has also reported using augmented reality to support customer-service activity, while Applied Materials refers to AR as part of the advanced digital tools used by field and installation engineers supporting semiconductor production systems.

Supporting Knowledge Transfer

Complex manufacturing equipment creates a significant knowledge-transfer challenge. Experienced engineers may possess years of procedural knowledge that is difficult to communicate through documentation alone.

During development of a bespoke VR or AR solution, that experience can be translated into structured interactions.

For example, an experienced engineer might explain that after completing a documented step there are three visual inspection points they always verify before proceeding. Subject to client approval, those checks can be incorporated into the immersive workflow.

This allows organisations to capture practical knowledge while retaining formal SOP governance.

Reducing Training Dependence on Production Equipment

The commercial argument is straightforward.

If every training session requires access to a physical tool, training competes with other legitimate demands on that asset. VR creates an additional training environment which can be deployed independently of the production machine.

That does not mean VR replaces real-world qualification. Semiconductor organisations can use simulation as one stage in a blended competency pathway:

knowledge learning → VR procedural rehearsal → supervised practical work → competency assessment → AR-assisted live operations where appropriate.

Rehearsing Abnormal Conditions

VR also allows technicians to practise scenarios that may occur infrequently.

Instead of always starting from a perfectly functioning machine, a training scenario can introduce an alarm, incorrect state, abnormal reading or procedural complication.

The trainee must diagnose the situation and decide whether to continue, pause or escalate.

This develops decision-making rather than simple memorisation.

Why Bespoke Development Matters

Lithography systems are not interchangeable, and neither are semiconductor companies' maintenance procedures.

For this reason Spark does not position immersive training as a generic library of semiconductor simulations. Spark develops bespoke VR and AR applications around the client's equipment, SOPs, processes and desired competency outcomes.

The appropriate level of digital-twin detail can therefore be chosen according to the training requirement and available technical data.

Conclusion

The more precise the manufacturing environment, the stronger the argument for practising important procedures before performing them on production equipment.

Bespoke VR can give semiconductor engineers a safe, repeatable environment in which to learn lithography equipment and maintenance sequences. AR can then provide contextual procedural support when authorised technicians move onto the physical system.

For semiconductor manufacturers and equipment suppliers looking to develop immersive lithography, maintenance or equipment-training applications, contact Spark to discuss a bespoke VR or AR solution.

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