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LG Chem presents new cover window for foldable IT devices
Source:Adsale Plastics Network    Editor:JK    Date:13.Sep.2021

LG Chem has been developing new technologies that can be used for foldable displays using new materials technologies and its accumulated coating technologies.


The company announced the ‘Real Folding Window’, the new cover window for foldable IT devices coated with specially developed materials to make the surface as hard as glass, while the folding parts as flexible as plastic. It plans to procure mass production abilities by 2022 and begin full-scale sales of the product from 2023.


A spokesman from LG Chem, told, “Unlike existing polyimide films and tempered glass-type materials, the cover window that applied LG Chem’s new coating technologies will maximize flexibility, while also providing optimized solutions for foldable phones such as making improvements to chronic issues like fold impressions on the connecting part of the screen.”


Cover windows are core materials located on the outermost part of IT devices to protect the display from impact, while also delivering clear images.


LG Chem develops new technologies for foldable displays.

The ‘Real Folding Window’ is coated with a new material at a thickness of a few dozen micrometers (㎛) on both sides of PET film, which is a type of thin plastic, to enhance heat-resistance and mechanical properties of plastic materials. It is thinner compared to existing tempered glass and has the same hardness, with no cracking on the screen.


The price competitiveness is superior compared to existing polyimide film and due to its good flexibility, durability is maintained completely even when folding more than 200,000 times. LG Chem also made significant improvements to the fold lines that occur on the folding parts of the screen.


Besides, while currently commercialized cover windows are optimized for in-folding methods in which the screen folds inwards, LG Chem’s ‘real folding window’ has the advantage that it can also be used for out-folding methods where the screen folds outwards.


LG Chem is also developing technologies to produce a thin ‘Real Folding Window’ with only coating and no need of PET films. Coating-method products without PET films are expected to be applied in foldable phones and rollable IT devices, etc. that have to be very thin.


Chang Do Ki, Vice President / Division Leader, IT Materials Division, Advanced Materials at LG Chem, said, “We will strengthen our partnerships with leading companies of the smartphone industry and expand our market starting with mobiles and going on to new foldable applications such as laptops and tablets.”



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