Dr. Schenk GmbH

Polarizing Film Inspection

Polarizing film inspection
Polarizing film inspection

EasyInspect for polarizing film inspection identifies miniscule defects that can occurduring the production, laminating and finishing process. EasyMeasure monitors the film properties, e.g. dye or polarization homogeneity, during all production steps. Together, they combine defect detection and quality monitoring of the final product.

New media, HDTV and 3D-TV place increasingly high requirements on display technology to produce defect-free, large LCD displays. In the layer stack of an LCD panel the polarizer films play a key roll, as they determine the brightness and contrast of the display.

EasyInspect for polarizing film inspection is used for local defect detection, e.g. in:

  • Semi-finished film inspection for:

    • TAC scratch detection
    • PVA defect detection
    • Lamination defect detection
    • PET bubble detection (with particle)
    • PSA bubble detection

  • Finished film inspection prior to marking and cutting:

    • Halley bear detection
    • PSA detection (with foreign particle)
    • Lamination defect detection
    • Particles on PET detection

  • All production steps:

    • Repeated roller defect detection
    • Roller dirt detection

EasyInspect & EasyMeasure for polarizing film inspection use Dr. Schenk’s unique MIDA Technology to inspect polarizing film base and converted materials with multiple optical channels on a single scan line. One defect generates multiple images to deliver the most comprehensive material and defect analysis on the market.

Hally bear defect
Lamination defect
LCD scratch defect
PET bubble defect
Defect Density Map
Running Defect Map

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