Silicon wafer thinning end point method
    32.
    发明授权
    Silicon wafer thinning end point method 有权
    硅晶片薄化端点法

    公开(公告)号:US07498236B2

    公开(公告)日:2009-03-03

    申请号:US11563715

    申请日:2006-11-28

    CPC分类号: H01L21/78

    摘要: Disclosed are a method of and system for fabricating a semiconductor wafer. The method comprises the steps of providing a silicon wafer having a front side an a back side, building an integrated circuit on the front side of the wafer, and thereafter removing substrate from the back side of the silicon wafer. The building step includes the steps of forming a desired structure in the wafer, and forming an end structure in the wafer, said end structure extending to a greater depth, toward the back side of the wafer, than the desired structure. Also, the removing step includes the step of removing said substrate only to the end structure, whereby no part of the desired structure is removed during the removing step.

    摘要翻译: 公开了用于制造半导体晶片的方法和系统。 该方法包括以下步骤:提供具有正面和背面的硅晶片,在晶片前侧构建集成电路,然后从硅晶片的背面去除衬底。 构建步骤包括以下步骤:在晶片中形成期望的结构,并且在晶片中形成端部结构,所述端部结构延伸到比晶片的背面更大的深度,而不是期望的结构。 此外,除去步骤包括仅将该基材除去至端部结构的步骤,由此在除去步骤期间不除去所需结构的一部分。

    Method of polishing C4 molybdenum masks to remove molybdenum peaks
    35.
    发明授权
    Method of polishing C4 molybdenum masks to remove molybdenum peaks 有权
    抛光C4钼掩模以除去钼峰的方法

    公开(公告)号:US07025891B2

    公开(公告)日:2006-04-11

    申请号:US10604991

    申请日:2003-08-29

    IPC分类号: B44C1/22 C25F3/00

    CPC分类号: H01L21/3212 C23F3/06

    摘要: A method of treating a molybdenum (moly) mask used in a C4 process to pattern C4 contacts. The moly mask has a wafer side which contacts a wafer during the C4 process and has a rough surface that includes spikes/projections of moly. The moly mask also has a non wafer side and a plurality of holes extending through the mask to pattern C4 contacts in the C4 process. An adhesive layer, such as an adhesive tape, is applied to the non wafer side of the moly mask, to enable a polishing tool to pull a vacuum on the non wafer side of the moly mask in spite of the presence of the holes to secure the moly mask during a subsequent polishing step. The tape also functions as a cushion so that defects on the non wafer side of the moly mask do not replicate through the moly mask to the polished wafer side of the moly mask. The wafer side of the moly mask is then subjected to mechanical or chemical/mechanical polishing to substantially remove the spikes of moly without significantly altering the dimensions of the moly mask or the holes.

    摘要翻译: 一种处理C4工艺中使用的钼(钼)掩模的图案化C4接触的方法。 钼掩模具有在C4工艺期间接触晶片的晶片侧,并且具有包括钼的尖峰/突起的粗糙表面。 钼掩模还具​​有非晶片侧和在C4工艺中延伸穿过掩模以形成图案C4触点的多个孔。 粘合剂层例如胶带被施加到钼掩模的非晶片侧,以使抛光工具能够在钼掩模的非晶片侧上拉真空,尽管存在孔以确保 在随后的抛光步骤期间的钼掩模。 胶带还起垫片的作用,使得钼掩模的非晶片侧的缺陷不会通过钼掩模复制到钼掩模的抛光晶片侧。 然后对钼掩模的晶片侧进行机械或化学/机械抛光,以基本上除去钼的尖峰而不显着改变钼掩模或孔的尺寸。

    Use of photoresist in substrate vias during backside grind
    36.
    发明授权
    Use of photoresist in substrate vias during backside grind 失效
    在背面研磨过程中在基板通孔中使用光致抗蚀剂

    公开(公告)号:US06888223B2

    公开(公告)日:2005-05-03

    申请号:US10405763

    申请日:2003-04-01

    IPC分类号: H01L21/768 H01L23/048

    CPC分类号: H01L21/76898

    摘要: A structure and method of formation. The substrate has front and back surfaces on opposite sides of the substrate. The substrate has a backside portion extending from the back surface to a second depth into the substrate as measured from the front surface. At least one via is formed in the substrate and extends from the front surface to a via depth into the substrate. The via depth is specific to each via. The via depth of each via is less than an initial thickness of the substrate. The second depth does not exceed the minimum via depth of the via depths. Organic material (e.g., photoresist) is inserted into each via. The organic material is subsequently covered with a tape, followed by removal of the backside portion of the substrate. The tape is subsequently removed from the organic material, followed by removal of the organic material from each via.

    摘要翻译: 一种结构和形成方法。 衬底在衬底的相对侧上具有前表面和后表面。 衬底具有从前表面测量的从后表面延伸到衬底的第二深度的背侧部分。 在衬底中形成至少一个通孔,并从前表面延伸到通孔深度进入衬底。 通孔深度特定于每个通孔。 每个通孔的通孔深度小于衬底的初始厚度。 第二深度不超过通孔深度的最小值。 将有机材料(例如光致抗蚀剂)插入每个通孔中。 随后用带覆盖有机材料,随后除去基材的背面部分。 随后从有机材料中取出胶带,然后从每个通孔中除去有机材料。