Korean semiconductor sensor specialist Sigetronics is accelerating the advancement of its photosensor technology in line with the rapid growth of the global wearable market.

Sigetronics CI (Photo = Sigetronics)

Photosensors, which utilize a wide range of wavelengths from ultraviolet (UV) to infrared (IR), can precisely monitor key health indicators such as heart rate, blood pressure, blood oxygen saturation, and sleep patterns. This makes them a critical component in next-generation healthcare devices, including smartwatches.

Sigetronics’ sensors operate with high sensitivity across the 300–1100 nm range and feature a flip-chip structure suitable for ultra-compact, lightweight products. They also integrate an avalanche photodiode (APD) capable of amplifying even minute optical signals up to 1,000 times, enabling superior performance and integration compared to global competitors.

Industry experts note that such technology could push the performance limits of wearable devices, with potential applications extending beyond smartwatches to smart rings, healthcare bands, and more. Currently, Sigetronics is targeting the global market through key customers in Korea, China, Taiwan, and Japan.

Meanwhile, market research firm Research Nester forecasts that the global smartwatch market will grow from $28.9 billion in 2024 at a 7.6% CAGR, reaching $75 billion by 2037. With major global players such as Samsung, Apple, Xiaomi, and Huawei actively expanding the market with new product launches, competition in the sensor sector is intensifying. Notably, Apple has announced plans to double the number of sensors in its smartwatches starting in 2026.

A Sigetronics spokesperson said, “Semiconductor sensor technology based on light is a core driver in the evolution of wearable devices. Through differentiated sensor solutions, we aim to accelerate the era of smart healthcare and contribute to creating healthier and more convenient lives.”

edaily , August 22, 2025