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- LCD PANELS REPAIR
- ELSIN Repair Capability
- LCD Defect Specification
- RMA&Other Services
- LOGISTICS, STORING
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Presentation (.pdf)LCD Defect Specification
Repairable defects and their manifestations on LCD units
| Defect identification | Description | |
|---|---|---|
| CID - Customer Inducted Defects | Scratch Front | Scratched front display panel |
| Dust BLU | Dust or other contamination on BLU | |
| Manufacturing defects | Scratch Back | Scratched rear part of the display facing BLU |
| Bubble | Bubbles caught under polarised film | |
| Dust Polfilm | Dust under polarised film | |
| Polfilm Defect | Defective polarised film (glossy, dirty or clotted) | |
| BLU Defect | Irregular function of BLU (no light or with apparent waves, spots and other imperfections) | |
| Black Screen | BLU operative, black screen | |
| White Screen | BLU operative, white screen | |
| Flicker | Flickering screen image | |
| Signal Error | Signal errors manifested through colour irregularities, interference, shadows, slow screen reaction and others | |
| H-Block | Horizontal block permanently lighted or dark (incl. colours) | |
| H-Line | Horizontal line permanently lighted or dark (incl. colours) | |
| V-Block | Vertical block permanently lighted or dark (incl. colours) | |
| V-Line | Vertical line permanently lighted or dark (incl. colours) |
Non-repairable defects and their manifestations on LCD units
| Defect identification | Description | |
|---|---|---|
| CID - Customer Inducted Defects | Crack (Broken) | Broken glass panel |
| Mura Black | Large or small (1cm) black mura | |
| Manufacturing defects | Cell defect | Light halo around a defective pixel |
| Light leakage | Light leaking beyond the image format | |
| Mura Color | Colour mura (yellow, strips, etc.). Irregular colour distribution. | |
| Mura White | Large or small (1cm) white mura | |
| Pixel defect | Permanently lighted or dark point(s), incl. colours | |
| Zaratsuki | Clusters of colour points and/or lines | |
| H-Line Cell Out Defect | Broken or incomplete horizontal line, incl. colours | |
| V-Line Cell Out Defect | Broken or incomplete vertical line, incl. colours |
Explanations:
BLU (BackLightUnit) - the display background illumination unit including CCFLs
Mura - a spot on the screen often seen only against grey background or from the side
Zaratsuki - an apparently random cluster of colour points and/or lines