photolithography

Thân thiện

A technician uses photolithography to create a microchip pattern.

Definition

1. 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.

Học thuật

Noun

1. a planographic printing process using plates made from a photographic image