From computers " development within these years , we can see that hard disks have a trend to smaller disk diameters ( which allows more rapid design and integration ) and more capacity and faster rotate speed . it will require substrate materials have high mechanical performance and good flatness , but the former nip / al substrate cannot accommodate to these change 縱觀近年來(lái)硬盤(pán)的發(fā)展趨勢(shì),硬盤(pán)正朝著更高的容量、更快的速度、更小的體積快速發(fā)展,要求基板材料具有更好的力學(xué)性能和平整的表面,原先的nip al基板已經(jīng)無(wú)法適應(yīng)這一變化。