Browsing by Author "Nolvi, Anton"

Mobile devices with interactive displays are ubiquitous commodities. Efficient quality control (QC) drives competitiveness. Scanning White Light Interferometry (SWLI) imaging offers fast and non-destructive QC. Relying on optical compensation and image stitching one can rapidly and cost-effectively produce sharp 3D-images of a display's inner structures with a few nanometers accuracy along the z-direction. As a practical example 3D images of a mobile device display revealed 0.92 ± 0.02 um height variation in the top glass assembly. The proposed method improves quality assurance of display manufacturing.