COG LCD Technology Takes Lead in Wearable and Medical Device Displays
COG (Chip on Glass) LCD modules are becoming the standard for high-performance small-screen devices, capturing over 63% of the 2025 wearable device market, including popular models like Garmin Vivosmart 5 and Fitbit Charge 6. The technology’s ability to mount driver ICs directly on glass substrates enables ultra-thin, lightweight designs—critical for wearables with 0.96 to 1.3-inch displays. Key advantages include near-zero input delay (less than 1ms) and superior reliability, with COG modules surviving over 500 hours in 85℃/85% humidity tests, outperforming COB alternatives by 20%. In the medical sector, 75% of home-use glucose meters, such as Johnson & Johnson’s OneTouch Ultra Mini, adopt COG LCDs for their compact size and reduced connection points, which enhance durability. DisplayModule’s research highlights that COG cuts power consumption by 15% compared to traditional modules, extending battery life for portable devices. While tooling costs for COG are higher initially, large-scale production (100,000+ units) drives significant per-unit cost reductions, making it increasingly competitive.
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