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    • 75. 发明授权
    • Method and system for manufacturing tapered waveguide structures in an energy assisted magnetic recording head
    • 在能量辅助磁记录头中制造锥形波导结构的方法和系统
    • US08790527B1
    • 2014-07-29
    • US13069023
    • 2011-03-22
    • Guanghong LuoMing JiangDanning YangYunfei Li
    • Guanghong LuoMing JiangDanning YangYunfei Li
    • H01L21/302H01L21/461B29D11/00C03C15/00C03C25/68
    • B29D11/00663
    • A method for providing waveguide structures for an energy assisted magnetic recording (EAMR) transducer is described. The waveguide structures have a plurality of widths. At least one waveguide layer is provided. Mask structure(s) corresponding to the waveguide structures and having a pattern are provided on the waveguide layer(s). The mask structure(s) include a planarization stop layer, a planarization assist layer on the planarization stop layer, and a hard mask layer on the planarization assist layer. The planarization assist layer has a low density. The pattern of the mask structure(s) is transferred to the waveguide layer(s). Optical material(s) that cover the waveguide layer(s) and a remaining portion of the mask structure(s) are provided. The optical material(s) have a density that is at least twice the low density of the planarization assist layer. The method also includes performing a planarization configured to remove at least a portion of the optical material(s).
    • 描述了一种用于提供能量辅助磁记录(EAMR)换能器的波导结构的方法。 波导结构具有多个宽度。 提供至少一个波导层。 对应于波导结构并具有图案的掩模结构设置在波导层上。 掩模结构包括平坦化停止层,平坦化停止层上的平坦化辅助层和平坦化辅助层上的硬掩模层。 平坦化助剂层具有低密度。 掩模结构的图案被传送到波导层。 提供了覆盖波导层和掩模结构的剩余部分的光学材料。 光学材料的密度至少是平坦化辅助层的低密度的两倍。 该方法还包括执行被配置为去除至少一部分光学材料的平坦化。