Repairing LCD Monitor,
LCD TV and Other LCD Panel related products are quiet similar. They usually
has three basic technical levels of repairing:
1. Anything that can be done by traditional repair, swapping the modules, replacing
the backlights...Etc.
2. Polarize Film Replacement (scratches or stains on Screen).
3. TAB/TCP Replacement (Horizontal or Vertical Lines on screen).
TAB/TCP Replacement
( Tape Carrier Package ). ---LCD Panel Repair
Failure Modes
The industry-wide failure modes for LCD and FPD reveal a common Pareto dispersion
pattern. By far the highest failure mode is blank horizontal rows or blank vertical
columns resulting from either bad drivers or broken driver-to-LCD interconnection.
Failures requiring driver recovery and re-bonding typically make up about 75%
of all LCD failures. Other significant failure modes include damaged polarizers,
failed backlights, bad inverter boards, LCD delamination (Scratch), and glass
related failures.
TCP/TAB
Salvage (
Tape Carrier Package ):
The
key to successful Tape-Automated Bonding (TAB):
Bottom-line
for successful bonding largely depends on a high yield TAB replacement process.
This emphasis on yield is the result of shortage of new replacement parts available
from FPD and LCD manufacturers, which makes effective component salvage an essential
part of any FPD and LCD repair strategy. Our Proprietary equipment allows us
to securely re-claim TCP from broken panels.
TCP/TAB
Bonding:
TCP-Panel
driver replacement process requires specialized equipment for pulse-heated anisotropic-conductive
film (ACF). Our proprietary equipment is able to execute tight process control
over heat and pressure profiles, precision positioning and alignment because
of our advance computerized control heat sealed equipment. We are proud to point
out that no other companies can compete with our specifications. Our successful
repair rate is far beyond the industrial average.
Polarizing
Film Replacement Capabilities
Polarizing
Removal Process ( Scratches on the screen)
Scratched or damaged polarizers first need to be removed from the existing glass
substrate, and the glass needs to be cleaned and prepared for the reapplication
of the new polarizing film. Both the removal and subsequent reapplication of
polarizing film need to be conducted under stringent antistatic conditions.
It is a well-known fact that during the removal process of polarizing film material
significant triboelectric charges are generated. These charges are caused when
friction is the primary means of generating static electricity. Whenever two
surfaces in close contact are separated, one surface loses electrons and becomes
positively charged while the other surface gains the same electrons and becomes
negatively charged. After separation, however, each surface retains its positive
or negative charge, unless the surface is conductive and or path to ground is
provided.
Any material,
whether a conductor or non-conductor, can be charged triboelectrically. To avoid
the buildup of triboelectric charge during polarizing film application, air ionization
systems are employed to flood the atmosphere with positive and negative ions.
When ionized air comes in contact with a charged surface, the charged surface
attracts ions of the opposite polarity, thus neutralizing charged surfaces.