公开(公告)号：US20160071844A1

公开(公告)日：2016-03-10

申请号：US14512475

申请日：2014-10-13

Applicant: UNITED MICROELECTRONICS CORP.

Inventor： Wen-Jiun Shen ,  Ssu-I Fu ,  Yen-Liang Wu ,  Chia-Jong Liu ,  Yu-Hsiang Hung ,  Chung-Fu Chang ,  Man-Ling Lu ,  Yi-Wei Chen

IPC: H01L27/088 ,  H01L21/308 ,  H01L21/306 ,  H01L21/8234 ,  H01L21/8236

CPC classification number: H01L21/308 ,  H01L21/02238 ,  H01L21/30604 ,  H01L21/823431 ,  H01L27/0886 ,  H01L29/66818

Abstract: A fin-shaped structure includes a substrate having a first fin-shaped structure located in a first area and a second fin-shaped structure located in a second area, wherein the second fin-shaped structure includes a ladder-shaped cross-sectional profile part. The present invention also provides two methods of forming this fin-shaped structure. In one case, a substrate having a first fin-shaped structure and a second fin-shaped structure is provided. A treatment process is performed to modify an external surface of the top of the second fin-shaped structure, thereby forming a modified part. A removing process is performed to remove the modified part through a high removing selectivity to the first fin-shaped structure and the second fin-shaped structure, and the modified part, thereby the second fin-shaped structure having a ladder-shaped cross-sectional profile part is formed.

Abstract translation: 鳍状结构包括具有位于第一区域中的第一鳍状结构的基板和位于第二区域中的第二鳍状结构，其中第二鳍状结构包括梯形横截面轮廓部分 。 本发明还提供了形成该鳍状结构的两种方法。 在一种情况下，提供具有第一鳍状结构和第二鳍状结构的基板。 执行处理工艺以改变第二鳍状结构的顶部的外表面，从而形成修改部分。 进行去除处理以通过对第一鳍状结构和第二鳍状结构以及改性部分的高去除选择性去除改性部分，由此第二鳍状结构具有梯形横截面 形成轮廓部分。

公开(公告)号：US20160049496A1

公开(公告)日：2016-02-18

申请号：US14495907

申请日：2014-09-25

Applicant: UNITED MICROELECTRONICS CORP.

Inventor： Man-Ling Lu ,  Yu-Hsiang Hung ,  Chung-Fu Chang ,  Yen-Liang Wu ,  Wen-Jiun Shen ,  Chia-Jong Liu ,  Ssu-I Fu ,  Yi-Wei Chen

IPC: H01L29/66 ,  H01L29/06 ,  H01L21/02 ,  H01L29/78

CPC classification number: H01L29/66553 ,  H01L21/02057 ,  H01L21/0217 ,  H01L21/3086 ,  H01L21/823814 ,  H01L27/092 ,  H01L29/0649 ,  H01L29/6656 ,  H01L29/66636 ,  H01L29/78

Abstract: A MOS transistor including a gate structure, an epitaxial spacer and an epitaxial structure is provided. The gate structure is disposed on a substrate. The epitaxial spacer is disposed on the substrate besides the gate structure, wherein the epitaxial spacer includes silicon and nitrogen, and the ratio of nitrogen to silicon is larger than 1.3. The epitaxial structure is disposed in the substrate besides the epitaxial spacer. A semiconductor process includes the following steps for forming an epitaxial structure. A gate structure is formed on a substrate. An epitaxial spacer is formed on the substrate besides the gate structure for defining the position of an epitaxial structure, wherein the epitaxial spacer includes silicon and nitrogen, and the ratio of nitrogen to silicon is larger than 1.3. The epitaxial structure is formed in the substrate besides the epitaxial spacer.

Abstract translation: 提供了包括栅极结构，外延隔离物和外延结构的MOS晶体管。 栅极结构设置在基板上。 除了栅极结构之外，外延衬垫设置在衬底上，其中外延衬垫包括硅和氮，并且氮与硅之比大于1.3。 外延结构除了外延间隔物之外还设置在基板中。 半导体工艺包括用于形成外延结构的以下步骤。 在基板上形成栅极结构。 除了用于限定外延结构的位置的栅极结构之外，在衬底上形成外延衬垫，其中外延衬垫包括硅和氮，并且氮与硅之比大于1.3。 该外延结构除了外延间隔物外还形成在基板中。