1.TFT/ LCD Glass a. LCD Glass (incl. Colour Filter, ITO lines ,Thin Film Transistor) b. Polarizer Film (Front, Rear)2.Gate PCB (PWB) , Gate Driver IC3.Source PCB (LCD Timing Controller PCB ),Source Driver IC4.Interface Connector (Flex Cable)5.Backlite(inverter) PCB6.CCF lamp. (Cold cathode florescent lamp)7.Diffuser, lens sheet, light guide, reflector sheet

LCD GLASS

GATE PCB

GATE DRIVER IC

POLARIZER FILM

SOURCE PCB (Timing Controller PCB)

SOURCE DRIVER IC

Repairable Parts for LCD Panels

Usage Areas

LCD TV, PDP TV, Lap top Computer, LCD Monitor, Mobile Phone, PDA, Car Navigation SystemLCD TV, PDP TV, Lap top Computer, LCD Monitor, Mobile Phone, PDA, Car Navigation System

Laptop & Notebook LCDs

LCD TV

• Class 1000 Clean Room

• Air Shower Entrance

• ZERO Clean Module • (Polarize Film Replacement)

• ESD control

• Special Anti-Dust Clothing

LCD Panel Repair Laboratory

• Bonding Machine Laminator & Delaminator BGA/SMD Rework Machine Special Microscope• ITO Tester• Colour Analyzer• LCD panel tester• Testing Cabin

Necessary Devices for LCD Panel Repair

Component level Repair PCB Repair (Laptop PCB, LCD PCB etc)Analog Board Repair (Power Supply, CRT monitor PCB etc)

Antistatic area, ESD ControlSMD/BGA Rework StationOscilloscope, Millimeters, Fault Locator, PCB test & Trouble Shooting System, Powers Supply Load Tester

Electronic Laboratory

LCD Panel Electronic Repair PCBs on the TFT LCD Panel• GATE PCB• SOURCE PCB• BACK LIGHT PCB

No image, contrast problems, visual problems

Defective electronic component can be determined by our special measuring and comparison devices. All components can be replacement in our laboratory by BGA and SMD Rework Station.

Mechanic or Cosmetic Repair

Damageable parts as mechanic ;• Diffuser • Lens Sheet• Light Guide• Reflector Sheet• CCFL Lamp

The parts that above are losing their specialties because of the unsuitable conditions. This happen caused to colour decrement and disappearing image on LCD

Problems and Solutions in LCD Panel

A) Polarizer Film Replacement

B) Driver IC Replacement (COG,TCP Tab, COF) (Horizontal and Vertical lines on LCD Panel)

* Gate Driver IC Replacement (on LCD glass)* Gate Driver IC Replacement (on PCB)* Source Driver IC Replacement (on LCD glass)* Source Driver IC Replacement (on PCB)

C) CONNECTOR Replacement

D) Defect Pixel, Colour Filter ,ITO Line Problems

Polarizer Film Replacement

Damaged polarizer films are removed from LCD panel in no dust atmosphere LCD Panel’s glass is cleaned by a special chemical. New polarizer film is placed in no dust atmosphere Colour degree and luminance test is done with Colour Analyzer General test (Test Box 40 C)

Driver IC Replacement (TCP Tab, COG, COF)

The reason of the changing IC driver is horizontal and vertical lines on LCD Panel. Except this vision missing can be seen in some areas.

Remove Driver IC from LCD panelFinding the reason of the lines on LCD panel (ITO Tester)Cleaning the remaining ACF from LCD glassDetermine to ACF type Determine pressing heat and pressure Pressing test and Peeling testGeneral test (Test box 40C)

Vertical LineVertical Line Prob Problemlem

Driver IC ProblemDriver IC Problem

Contrast ProblemContrast Problem

Polarizer Film ProblemPolarizer Film Problem

Driver IC and Source PCB Are DamagedDriver IC and Source PCB Are Damaged

Source PCB Is DamagedSource PCB Is Damaged