These displays are also using thinner glass and the thickness of is directly related to the stiffness of the glass. I expect that the GG is just a very thin very hard coating applied to normal LCD type of glass. The stiffness of is to the third power in the deflection equation below. We can also see that as the glass gets longer and wider it will have a larger deflection, but the thickess of the glass is the most important part.
The elastic deflection on a beam, loaded at its centre, supported by two simple supports is given by:
where:
δ = the deflection of the beam F =
force acting on the centre of the beam L = length of the beam between the supports E =
modulus of elasticity I =
area moment of inertia