A 619-pixel machine vision enhancement chip based on two-dimensional semiconductors.
basic_science · Level V
Where this comes from
- Record sourced from PubMed, PMID 35921422.
- Also identified by DOI 10.1126/sciadv.abn9328 and PMC identifier 9348785.
- Licence recorded as CC BY-NC.
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Abstract
The rapid development of machine vision applications demands hardware that can sense and process visual information in a single monolithic unit to avoid redundant data transfer. Here, we design and demonstrate a monolithic vision enhancement chip with light-sensing, memory, digital-to-analog conversion, and processing functions by implementing a 619-pixel with 8582 transistors and physical dimensions of 10 mm by 10 mm based on a wafer-scale two-dimensional (2D) monolayer molybdenum disulfide (MoS<sub>2</sub>). The light-sensing function with analog MoS<sub>2</sub> transistor circuits offers low noise and high photosensitivity. Furthermore, we adopt a MoS<sub>2</sub> analog processing circuit to dynamically adjust the photocurrent of individual imaging sensor, which yields a high dynamic light-sensing range greater than 90 decibels. The vision chip allows the applications for contrast enhancement and noise reduction of image processing. This large-scale monolithic chip based on 2D semiconductors shows multiple functions with light sensing, memory, and processing for artificial machine vision applications, exhibiting the potentials of 2D semiconductors for future electronics.