It's always easy to point fingers, and this time it's been pointed directly at Wintek. The report from Digitimes.com claims that Wintek is facing a manufacturing bottleneck in its touch panel production, and its low yield rate for touch panels has hampered its shipments to Apple.

However, in a response from Wintek they said all operations have been running in line with its plans, and it declined to comment on individual clients or particular orders.

{Source: Digitimes}