Customer Background

The customer is a North American medical OEM with mature clinical diagnostic analyzers already in mass shipment. The original touch cover adopted standard soda-lime glass. After years of field deployment, frequent surface scratches and chemical corrosion during hospital disinfection caused rising after-sales failure rates. The client required a drop-in upgrade solution compatible with existing assembly structure, avoiding costly mechanical redesign.

Field Pain Points Of Existing Glass Cover

• Soda-lime glass features low hardness, easily scratched by daily cleaning tools, disturbing touch operation and display readout
• Poor resistance to hospital-grade disinfectants; surface fogging and coating degradation appear after repeated wiping cycles
• High on-site maintenance expenditure; clinical diagnostic equipment cannot be taken offline frequently for repairs
• Expect a compatible upgraded material, no need to modify internal touch stack and housing structure

Drop-In Sapphire Upgrade Solution

We proposed single-crystal biocompatible sapphire touch cover as a direct replacement, strictly following original drawing dimensions to achieve seamless assembly.

• Substrate: Single-crystal sapphire, Mohs 9 hardness, outstanding scratch resistance
• Custom processing: CNC shaping, rounded edge polishing, black silk-screen border, reserved button cutouts consistent with original parts
• Optional coating: AR+AF dual-function coating, reducing ambient light reflection and resisting fingerprint adhesion
• Biocompatible substrate, stable under repeated hospital disinfection environment

Project Verification & Final Outcomes

• Scratch resistance improved significantly; no visible damage after thousands of disinfection wipe cycles
• AR coating reduces ambient light reflection, display visibility improved under bright ward lighting
• AF coating simplifies daily cleaning work for clinical staff
• Field failure rate decreased remarkably, long-term after-sales maintenance expenditure reduced
• Sapphire cover passed customer’s internal biocompatibility and chemical durability testing
• Fully matched existing assembly structure, no extra mould modification investment

Core Specification of Sapphire Touch Cover

If you are developing brand-new clinical diagnostic hardware from scratch, check our full OEM development case: Single Crystal Sapphire Touch Cover For Clinical Diagnostic Medical Equipment