Ultimate Guide to Non-destructive Disassembly of LED Flexible Film Screen: A Must-Read for Professionals!

Due to the ultra-thin characteristics of the LED Flexible Film Screen, improper dismantling can easily lead to screen body tearing, circuit delamination, glass scratches and other losses of ten thousand dollars. This article exposes the engineer’s private collection of “zero-damage dismantling technology”, covering the selection of tools, temperature control, residual adhesive treatment of the whole process, to crack the industry remove taboo!

Dare to remove? First look at these 3 points

• Glue type
  • Removable adhesive: PET-based removable adhesive (peeling force 0.8-1.2N/cm)
  • Discreet adhesive: UV curing adhesive (need laser cutting)
  • Prohibited adhesive: epoxy resin adhesive (forced removal scrapping rate > 90%)
• Service life
  • ≤ 1 year: the adhesive layer is not aging, success rate of 80%
  • 1-3 years: partial embrittlement, 50% success rate
  • ≥3 years: direct replacement, disassembly is prohibited
• Ennironmental temperature
  • Best operating temperature: 25-35℃, low temperature embrittlement, high temperature glue liquefaction
  • Humidity requirements: ≤ 60%, prevent condensation from penetrating into the circuit

Zero-damage disassembly five-step method

• Step 1: Thermal softening of the decoupling layer
  • Use infrared heating plate 45 ℃ uniform preheating 30 minutes
• Step 2: Precise penetration of the decoupling agent
  • Inject the decoupling agent along the edge with a syringe, 0.2ml for every 10cm spacing, and then leave it for 5 minutes until the adhesive layer turns white.
• Step 3: Vacuum suction cup pulling
  • Suction cup negative pressure value set -0.6Bar, pulling speed ≤ 3cm/min, synchronized observation of the thermal imaging camera, temperature fluctuations need to be < ± 2 ℃
• Step 4: Nanoscale removal of residual glue
  • Stubborn adhesive residue with plasma cleaner; if there is no equipment, available butanone + non-woven rotating wipe
• Step 5: screen body stress reset
  • The disassembled screen body is placed in a constant temperature and humidity box, and the bent and deformed screen is corrected with a silicone mold press fit.

To remove or not to remove? Look here.

Does it have to be removed?
├─ Yes →Type of glue?
│ ├─ Removable glue → Follow the five-step procedure
│ └─ Prohibited to remove the glue → Replace with a new screen
└─ No → Select magnetic suction solution