Samsung Reportedly Developing CTG Glass to Target Fold Crease

Overview

• Reports published by Android Headlines citing ZDNet say Samsung Display is working on a new process called center‑etched thin glass, or CTG, though the company has not confirmed the work.
• CTG would make the central folding area thinner than the rest of a single glass sheet so the crease forms in a more flexible zone while nonfolding areas stay thicker for strength.
• Engineering and manufacturing challenges remain because producing a single glass sheet with different thicknesses can cause uneven texture, reflections, and optical distortion if not done precisely.
• Sources say CTG is still being refined and could be used on only some Galaxy Z Fold 9 variants if it reaches production, so its appearance in next‑year models is unconfirmed.
• The report follows Samsung’s recent moves from colorless polyimide to ultra‑thin glass and the company’s public Flex Titanium design for Fold 8, a history that helps explain why strong Z Fold 8 demand has spurred ongoing display R&D and rumor coverage.