Magnetic recording disk having pre-patterned surface features and planarized surface
    1.
    发明授权
    Magnetic recording disk having pre-patterned surface features and planarized surface 有权
    具有预图案化表面特征和平坦化表面的磁记录盘

    公开(公告)号:US08168311B2

    公开(公告)日:2012-05-01

    申请号:US12753683

    申请日:2010-04-02

    IPC分类号: G11B5/66

    CPC分类号: G11B5/82 G11B5/72 G11B5/855

    摘要: A magnetic recording disk with pre-patterned surface features of elevated lands and recessed grooves or trenches, like a discrete-track media (DTM) or bit-patterned media (BPM) disk, has a planarized surface. A multilayered disk overcoat is used to protect the recording layer, and at least one of the overcoat layers functions as a stop layer for terminating a chemical-mechanical polishing (CMP) process that substantially planarizes the disk. All of the layers of the multilayered overcoat are located above the lands, but none of the overcoat layers, or a number of layers less than the number of layers over the lands, is located above the recesses.

    摘要翻译: 具有预先图案化的表面特征的磁记录盘具有平坦化的表面,所述表面特征具有升高的平台和凹槽或沟槽,例如离散轨道介质(DTM)或位图形介质(BPM)盘。 使用多层盘外涂层来保护记录层,并且至少一个外涂层用作用于终止基本平坦化盘的化学机械抛光(CMP)工艺的停止层。 多层外涂层的所有层都位于焊盘上方,但是,在凹部上方都没有一个外涂层,或多个层数小于焊盘上的层数。

    MAGNETIC RECORDING DISK HAVING PRE-PATTERNED SURFACE FEATURES AND PLANARIZED SURFACE
    2.
    发明申请
    MAGNETIC RECORDING DISK HAVING PRE-PATTERNED SURFACE FEATURES AND PLANARIZED SURFACE 有权
    具有预设表面特征和平面化表面的磁记录盘

    公开(公告)号:US20110244273A1

    公开(公告)日:2011-10-06

    申请号:US12753683

    申请日:2010-04-02

    IPC分类号: G11B5/706

    CPC分类号: G11B5/82 G11B5/72 G11B5/855

    摘要: A magnetic recording disk with pre-patterned surface features of elevated lands and recessed grooves or trenches, like a discrete-track media (DTM) or bit-patterned media (BPM) disk, has a planarized surface. A multilayered disk overcoat is used to protect the recording layer, and at least one of the overcoat layers functions as a stop layer for terminating a chemical-mechanical polishing (CMP) process that substantially planarizes the disk. All of the layers of the multilayered overcoat are located above the lands, but none of the overcoat layers, or a number of layers less than the number of layers over the lands, is located above the recesses.

    摘要翻译: 具有预先图案化的表面特征的磁记录盘具有平坦化的表面,所述表面特征具有升高的平台和凹槽或沟槽,例如离散轨道介质(DTM)或位图形介质(BPM)盘。 使用多层盘外涂层来保护记录层,并且至少一个外涂层用作用于终止基本平坦化盘的化学机械抛光(CMP)工艺的停止层。 多层外涂层的所有层都位于焊盘上方,但是,在凹部上方都没有一个外涂层,或多个层数小于焊盘上的层数。

    Optical data storage system with multiple rewritable phase change
recording layers
    3.
    发明授权
    Optical data storage system with multiple rewritable phase change recording layers 失效
    具有多个可重写相变记录层的光学数据存储系统

    公开(公告)号:US5761188A

    公开(公告)日:1998-06-02

    申请号:US893030

    申请日:1997-07-15

    摘要: A multiple recording layer rewriteable phase-change optical disk and disk drive uses a reverse writing type of reversible phase-change material as the recording layer nearest the incident laser light. The disk has a light-transmissive substrate onto which the laser light is incident. The substrate supports at least two spatially-separated multilayer recording stacks, each stack including an active recording layer of reversible or rewriteable phase-change material. The recording stack located nearest the substrate on which the laser light is incident includes a reverse writing type of reversible phase change material, i.e., a phase-change material with an amorphous starting phase that is recorded onto by laser heating that converts data regions to the crystalline phase. This first recording layer has a dielectric layer in contact with it that has a high index of refraction relative to the adjacent recording layer and that acts as an optical interference film to provide a constructive optical interference effect in the recording stack. The optical interference film optimizes the contrast, reflectivity, and transmissivity of the recording stack. The optical interference film is also nonabsorbing so that laser light can pass through it to focus on a recording layer in a farther recording stack. This allows the farther recording layer to be written using reasonable laser power.

    摘要翻译: 多记录层可重写相变光盘和磁盘驱动器使用反向写入型可逆相变材料作为最接近入射激光的记录层。 光盘具有入射激光的透光基板。 衬底支撑至少两个空间分离的多层记录堆叠,每个堆叠包括可逆或可重写的相变材料的活性记录层。 最靠近激光入射的衬底的记录堆叠包括反向写入型的可逆相变材料,即具有非晶起始相的相变材料,其通过激光加热记录,其将数据区域转换为 结晶相。 该第一记录层具有与其接触的电介质层,其具有相对于相邻记录层的高折射率,并且其用作光学干涉膜以在记录堆叠中提供建设性的光学干涉效应。 光学干涉膜优化了记录叠层的对比度,反射率和透射率。 光学干涉膜也是不吸收的,使得激光可以通过它来聚焦在更远的记录堆叠中的记录层。 这允许使用合理的激光功率写入更远的记录层。

    Planarized magnetic recording disk with pre-patterned surface features and secure adhesion of planarizing fill material and method for planarizing the disk
    5.
    发明授权
    Planarized magnetic recording disk with pre-patterned surface features and secure adhesion of planarizing fill material and method for planarizing the disk 有权
    具有预先图案化的表面特征和平坦化填充材料的牢固粘附的平面化磁记录盘以及用于平坦化盘的方法

    公开(公告)号:US08252437B2

    公开(公告)日:2012-08-28

    申请号:US12914647

    申请日:2010-10-28

    IPC分类号: G11B5/66

    摘要: A magnetic recording disk has surface features of elevated lands and recessed grooves, and a planarized upper surface. A chemical-mechanical-polishing (CMP) stop layer is deposited over the lands and into the recesses. An adhesion film, like silicon, is deposited over the CMP stop layer, and fill material containing a silicon oxide (SiOx) is deposited over and in contact with the adhesion film. The adhesion film improves the adhesion of the SiOx fill material and prevents delamination during a subsequent two-step CMP planarizing process.

    摘要翻译: 磁记录盘具有升高的平台和凹槽的表面特征以及平坦化的上表面。 化学机械抛光(CMP)停止层沉积在焊盘上并进入凹槽中。 在CMP停止层上沉积粘附膜,如硅,并且将含有氧化硅(SiOx)的填充材料沉积在粘合膜上并与粘合膜接触。 粘合膜改善了SiOx填充材料的粘合性,并且防止了随后的两步CMP平坦化过程中的分层。

    Multiple data surface magneto-optical data storage system
    9.
    发明授权
    Multiple data surface magneto-optical data storage system 失效
    多数据表面磁光数据存储系统

    公开(公告)号:US5644555A

    公开(公告)日:1997-07-01

    申请号:US376943

    申请日:1995-01-19

    摘要: An optical data storage system comprises an optical disk drive and a multiple data surface magneto-optical medium. The medium comprises a substrate, a first dielectric layer, a first magneto-optical data layer, a second dielectric layer, a transmissive member, a third dielectric layer, a second magneto-optical data layer, a fourth dielectric layer, and a reflector layer. The thicknesses of the magneto-optical and dielectric layers are selected to maximize the magneto-optical read out signal received from the data layers. The disk drive includes a phase retarder for improving the signal from the magneto-optical data layers.

    摘要翻译: 光学数据存储系统包括光盘驱动器和多数据表面磁光介质。 介质包括基板,第一介电层,第一磁光数据层,第二电介质层,透射构件,第三介电层,第二磁光数据层,第四介电层和反射层 。 选择磁光和介电层的厚度以使从数据层接收的磁光读出信号最大化。 磁盘驱动器包括用于改善来自磁光数据层的信号的相位延迟器。