Quality Control
Every KELAI display module is manufactured in a Class 100 cleanroom and subjected to rigorous multi-stage testing. Our defect rate is maintained below 0.5% — an industry benchmark for aftermarket displays.
Class 100 Cleanroom Manufacturing
KELAI's display modules are produced in a semiconductor-grade Class 100 (ISO 5) cleanroom. This means fewer than 100 particles of 0.5µm or larger per cubic foot of air — the same standard used for integrated circuit fabrication.
Why this matters for display modules: a single dust particle trapped between the LCD layers or on the backlight assembly causes visible defects. By manufacturing in a Class 100 environment, we eliminate particulate contamination at the source rather than trying to catch it later.
- ✓ ISO 5 / Class 100 certification
- ✓ Positive pressure air handling
- ✓ HEPA + ULPA filtration
- ✓ Temperature & humidity controlled
- ✓ Full gowning protocol
- ✓ Continuous particle monitoring
Multi-Stage Quality Control
Seven inspection and testing stages ensure every module that leaves our factory meets the same standard — defect rate below 0.5%.
Incoming Material Inspection
All raw materials — glass substrates, polarizers, backlight units, flex cables — are inspected against specification before entering production.
In-Process AOI
Automated Optical Inspection at multiple points during assembly catches defects in real time — before they propagate downstream.
39 Gamma Calibration
Each module is calibrated across 39 gamma curves to ensure accurate color reproduction and smooth gradient transitions at every brightness level.
Touch & Function Test
52-channel touch testing verifies multi-touch sensitivity across the full surface. True Tone, brightness, and all connector functions are validated.
Visual Inspection
Trained inspectors examine each module under calibrated lighting for cosmetic defects: dead pixels, mura, backlight bleed, scratches, and alignment.
Batch Sampling Audit
AQL-based statistical sampling of every production batch provides a final quality gate. Batches that fail sampling are 100% re-inspected.
Packaging & Shipment QC
Final check of packaging integrity, ESD protection, labeling accuracy, and documentation before dispatch to global logistics.
Defect Rate < 0.5%
Fewer than 5 defective units per 1,000 shipped — an industry-leading standard for aftermarket display modules.
Internationally Certified Quality Systems
Our quality management and environmental management systems are certified to international standards, audited annually by accredited bodies.
🏅 ISO 9001:2015
Quality Management Systems — certified processes for design, production, inspection, and continuous improvement. Annual surveillance audits ensure ongoing compliance.
🌿 ISO 14001:2015
Environmental Management Systems — responsible manufacturing with documented controls for waste management, energy efficiency, and regulatory compliance.
♻️ RoHS Compliant
All KELAI display modules are free from lead, mercury, cadmium, hexavalent chromium, PBBs, and PBDEs — fully compliant with EU RoHS Directive 2011/65/EU.
📡 FCC Certified
Electromagnetic compatibility tested and certified — KELAI modules operate without interference in consumer electronic devices sold in FCC-regulated markets.