Bonding quality inspection of transparent materials using optical coherence tomography

摘要

An optical coherence tomography (OCT) system 63 is used to inspect bonding points 66A, 66B, 66C sandwiched between two materials (eg, 62, 64 layers of the display). OCT distinguishes between the welding and air gaps between the two materials. The bonding point is identified as breaking in the air gap between the materials. This system determines whether there is a bonding failure by extracting the various physical properties of the bonding point and the gap between the two materials.