An etched dielectric film for use in a hard disk drive. The dielectric film has a thickness of about 25 &mgr;m or greater when it is attached to a supporting metal substrate, and is subsequently etched to a thickness of about 20 &mgr;m or less.
一种用于硬盘驱动器的蚀刻介质膜。电介质薄膜附着在支撑
金属基板上时的厚度约为 25 微米或更厚,随后被蚀刻为约 20 微米或更薄。