UTG
A cover material used in foldable-screen smartphones, characterized by bendability, scratch resistance and high light transmittance.
Timeline (last 90 days)
Although ultra-thin flexible glass (UTG) improves hardness, its impact resistance involves a trade-off with polymer protective films.
UTG's advantages are a feel close to traditional glass and high optical transmittance, but its impact resistance is significantly weaker than ordinary cover glass.
UTG thickness is typically around 30 microns and requires chemical thinning and strengthening treatment.
UTG achieves bendability through chemical thinning, but its edges are prone to micro-cracks.
Foldable phones typically use transparent polyimide (CPI) film or ultra-thin flexible glass (UTG) as the cover material.
Samsung's UTG cover and enhanced hinge design significantly improved foldable-screen durability.
Repeated opening and closing of a foldable phone subjects the material in the folding area to cyclic fatigue, and when the hinge applies uneven pressure or foreign matter gets in, cracks may initiate and propagate from the crease.
A foldable's inner screen is typically composed of multiple layers including ultra-thin flexible glass (UTG) or polymer film, a polarizer and touch layer, a light-emitting display layer, and a buffer support layer.
Book-style inward-folding designs generally use ultra-thin flexible glass (UTG) to cover the inner screen and leave a bending radius in the hinge area to control the crease.
The mainstream approach for foldable inner-display cover layers is to stack a surface-treatment layer on ultra-thin flexible glass (UTG) or transparent polyimide (CPI) film.
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All Facts (18)
Although ultra-thin flexible glass (UTG) improves hardness, its impact resistance involves a trade-off with polymer protective films.
50%UnverifiedUTG's advantages are a feel close to traditional glass and high optical transmittance, but its impact resistance is significantly weaker than ordinary cover glass.
50%UnverifiedUTG thickness is typically around 30 microns and requires chemical thinning and strengthening treatment.
50%UnverifiedUTG achieves bendability through chemical thinning, but its edges are prone to micro-cracks.
50%UnverifiedFoldable phones typically use transparent polyimide (CPI) film or ultra-thin flexible glass (UTG) as the cover material.
50%UnverifiedSamsung's UTG cover and enhanced hinge design significantly improved foldable-screen durability.
50%UnverifiedRepeated opening and closing of a foldable phone subjects the material in the folding area to cyclic fatigue, and when the hinge applies uneven pressure or foreign matter gets in, cracks may initiate and propagate from the crease.
50%UnverifiedA foldable's inner screen is typically composed of multiple layers including ultra-thin flexible glass (UTG) or polymer film, a polarizer and touch layer, a light-emitting display layer, and a buffer support layer.
50%UnverifiedBook-style inward-folding designs generally use ultra-thin flexible glass (UTG) to cover the inner screen and leave a bending radius in the hinge area to control the crease.
50%UnverifiedThe mainstream approach for foldable inner-display cover layers is to stack a surface-treatment layer on ultra-thin flexible glass (UTG) or transparent polyimide (CPI) film.
50%UnverifiedApple's long absence from foldable screens is widely believed to be a wait for hinge durability, UTG (ultra-thin flexible glass) yield, and system-level large-screen adaptation to mature simultaneously.
50%UnverifiedUltra-thin glass (UTG) cover panels are typically only 30–50 micrometers thick and carry the risk of microcrack propagation under extreme temperature changes.
50%UnverifiedSamsung has developed an ultra-thin glass (UTG) cover solution with a thickness of only 30 micrometers, approximately one-third the diameter of a human hair.
50%UnverifiedUltra-Thin Glass (UTG) technology has gradually replaced the plastic protective layers used in early foldable screens.
50%UnverifiedSamsung's UTG (Ultra-Thin Glass) technology has reached its third generation, with hinge lifespan increasing from an initial 200,000 cycles to over 400,000 cycles.
50%UnverifiedSamsung Display's third-generation UTG technology has reduced crease visibility by approximately 40% and the folding lifespan exceeds 200,000 times.
50%UnverifiedUTG technology raises screen hardness from the 2-3H of CPI materials to 6-7H.
50%UnverifiedSamsung first applied UTG technology to the Galaxy Z Flip in 2020, compressing glass thickness to 30 micrometers and improving hardness to 6-7H.
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