photolithography
Definition
- Noun:
- A planographic printing process using plates made from a photographic image: Photolithography is a technique primarily used in microfabrication to pattern parts of a thin film or the bulk of a substrate. It uses light to transfer a geometric pattern from a photomask to a light-sensitive chemical (photoresist) on the substrate, allowing for the precise etching or deposition of materials to create microscopic structures.
Usage Examples
- Noun:
- The semiconductor chip was manufactured using advanced photolithography.
- Photolithography is a critical step in the production of integrated circuits.
- The resolution of the features depends on the wavelength of light used in the photolithography process.
Advanced Usage
- In technical contexts: The term is often qualified by the type of light source or scale, such as or , to specify the advanced technique used for creating extremely small features.
- EUV photolithography enables the creation of circuits with features smaller than 10 nanometers.
Variants and Related Words
- Photolithographic (adj): Pertaining to or involving photolithography.
- The photolithographic steps must be performed in a cleanroom.
- Photomask (n): A patterned plate or film used in photolithography to block light and define the pattern transferred to the photoresist.
- Photoresist (n): A light-sensitive material used in photolithography to form a patterned coating on a surface.
Synonyms
- Lithography: A broader category of printing and microfabrication processes that includes photolithography. Note: In precise technical contexts, "lithography" alone may not specify the use of light.
- Optical lithography: A more specific synonym that emphasizes the use of light.
Related Phrases
- Photolithography process: The complete sequence of steps involved in photolithography, including coating, exposure, development, and etching.
- The engineer optimized the photolithography process to reduce defects.
Noun
-
a planographic printing process using plates made from a photographic image
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