LCD Common Defects & Root Causes | Quick Industry Guide

Quality control is core for LCD display manufacturing. Most common LCD defects come from production, assembly and environmental issues. Here is a clear & handy defect guide for sourcing, inspection and production teams.

✅ Common LCD Defects & Reasons

• Bright Spots – Pixel short circuit

• Screen Flickering/Glitch – Abnormal signal transmission

• Bright Lines – Row & column electrode open circuit

• Light Leakage – Poor iron frame pressing

• Pressure Damage – External force impact

• Foreign Particles – Insufficient workshop cleanliness

• Image Ghosting – Long-term static screen display

• Water Ripple – Incomplete air exhaust during lamination

• Fingerprint Marks – No AG coating on the surface

• Air Bubbles – Air entering adhesive layer during lamination

Understanding these root causes helps effectively reduce defective rates, stabilize product quality, and avoid unnecessary losses during mass production and cooperation.