ACF / COF
Bonding Service
Precision thermo-compression bonding replacing damaged, corroded, or burned Chip-on-Film (COF) driver ICs using industrial Anisotropic Conductive Film (ACF).
3-Step COF Replacement Process
How our bonding workstation establishes permanent sub-micron conductive connections between flex ICs and display glass.
Damaged COF Removal & Cleaning
Delicate thermal desoldering of burned COF driver ribbons and chemical microscopic cleaning of ITO glass pads.
Sub-Micron Optical Alignment
Dual HD CCD microscope cameras align the replacement COF IC leads with 50µm ITO glass electrode tracks with ±3µm precision.
Pulse-Heat Thermo-Compression
Instantaneous pulse-heating (180°C–230°C) activates conductive ACF particles under pneumatic pressure for permanent bonding.
Display Faults Addressed by ACF Bonding
Symptoms caused by defective, corroded, or detached flex driver ICs restored with fresh COF tabs.
Lining on Panel (Horizontal & Vertical)
Fine horizontal or vertical colored lines cutting picture.
Half Screen Problem
One half normal while opposite half is black or lined.
Vertical Lines (Solid or Rainbow)
Thick single or rainbow vertical bars stretching screen.
Industrial ACF Pulse-Heating Hot-Press Workstation
Equipped with precision titanium alloy thermode blades, calibrated pneumatic pressure controls, and dual-axis optical micro-alignment.
Related Specialized Services
Explore our other component-level display restoration pathways.
LCD & LED Panel Repair
Advanced glass-level diagnosis, voltage rail troubleshooting, and substrate circuitry restoration for LCD and LED displays.
Panel Laser Machine Repair
Microscopic laser short-circuit isolation and ITO conductive track micro-welding inside the display glass sandwich.
Display Fault Solutions & Diagnostics
Systematic root-cause diagnosis and resolution for lines, blank screens, ghosting, and color distortion.