Photolithography
Process using light to transfer a geometric pattern from a photomask to a light-sensitive chemical on a substrate, key for IC manufacturing.
Core metadata
- ID: photolithography
- Era: Modern
- First known date: 1955 (exact)
- Region: United States and global semiconductor industry
- Review status: source_checked
- Maturity: established
Prerequisites
- Advanced Chemistry (advanced_chemistry)
- Photography (photography)
- Precision Machine Tools (precision_machine_tools)
- Scientific Method (scientific_method)
Dependents
- DUV Stepper Lithography (duv_stepper_lithography)
- Fan-Out Wafer-Level Packaging (fan_out_wafer_level_packaging)
- Integrated Circuits (Microchips) (integrated_circuits)
- MEMS Sensors (mems_sensors)
- Micro-Electro-Mechanical Systems (MEMS) (micro_electromechanical_systems_mems)
- Microfluidics (microfluidics)
- Photoresist Chemistry (photoresist_chemistry)
- Plasma Etching (plasma_etching)
- Semiconductor Photomasks (semiconductor_photomasks)
- Silicon Planar Process (silicon_planar_process)
- Solar Photovoltaics (solar_photovoltaics)
- Through-Silicon Vias (through_silicon_vias)
Fields
Field lanes
- Semiconductors & Integrated Circuits: Fabrication & Lithography
Node sources
- 1955: Photolithography Techniques Are Used to Make Silicon Devices (Computer History Museum, 2007, museum) • Supports: node, maturity
- Light and Lasers: Lithography Principles (ASML, 2026, generic_overview) • Supports: node, maturity
Prerequisite edge evidence
Edge/source evidence summary:
- Prerequisite edges: 4
- Average edge confidence: 68%
- Prerequisite sources: 4
- expert_inference: 4
| Prerequisite | Type | Confidence | Evidence level | Note | Sources |
|---|---|---|---|---|---|
| Photography (photography) | enabling | 68% | expert_inference | Photography provides a capability that enables this technology without being the only possible path. |
|
| Advanced Chemistry (advanced_chemistry) | enabling | 68% | expert_inference | Advanced Chemistry provides a capability that enables this technology without being the only possible path. |
|
| Scientific Method (scientific_method) | enabling | 68% | expert_inference | Scientific Method provides a capability that enables this technology without being the only possible path. |
|
| Precision Machine Tools (precision_machine_tools) | enabling | 68% | expert_inference | Precision Machine Tools provides a capability that enables this technology without being the only possible path. |
|
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