The demand for larger sizes of mother glass (e.g. Generations 10,11,12) as well as the demand for high density thin
film transistor (TFT) pitch patterning of FPDs with the emergence of ultra high definition 4K and 8K TVs have also been increasing. However when the pitch pattern density of an FPD is increasing the tendency of defects such as inter layer short circuits between TFT lines is also increasing.