公开(公告)号：US20140103443A1

公开(公告)日：2014-04-17

申请号：US14135588

申请日：2013-12-20

Applicant: UNITED MICROELECTRONICS CORP.

Inventor： Po-Jui Liao ,  Tsung-Lung Tsai ,  Chien-Ting Lin ,  Shao-Hua Hsu ,  Yeng-Peng Wang ,  Chun-Hsien Lin ,  Chan-Lon Yang ,  Guang-Yaw Hwang ,  Shin-Chi Chen ,  Hung-Ling Shih ,  Jiunn-Hsiung Liao ,  Chia-Wen Liang

IPC: H01L29/78

CPC classification number: H01L29/78 ,  H01L21/823842 ,  H01L21/82385 ,  H01L29/66545

Abstract: A semiconductor device having a metal gate includes a substrate having a first gate trench and a second gate trench formed thereon, a gate dielectric layer respectively formed in the first gate trench and the second gate trench, a first work function metal layer formed on the gate dielectric layer in the first gate trench and the second gate trench, a second work function metal layer respectively formed in the first gate trench and the second gate trench, and a filling metal layer formed on the second work function metal layer. An opening width of the second gate trench is larger than an opening width of the first gate trench. An upper area of the second work function metal layer in the first gate trench is wider than a lower area of the second work function metal layer in the first gate trench.

Abstract translation: 具有金属栅极的半导体器件包括具有形成在其上的第一栅极沟槽和第二栅极沟槽的衬底，分别形成在第一栅极沟槽和第二栅极沟槽中的栅极电介质层，形成在栅极上的第一功函数金属层 第一栅极沟槽和第二栅极沟槽中的介电层，分别形成在第一栅极沟槽和第二栅极沟槽中的第二功函数金属层和形成在第二功函数金属层上的填充金属层。 第二栅极沟槽的开口宽度大于第一栅极沟槽的开口宽度。 第一栅极沟槽中的第二功函数金属层的上部区域比第一栅极沟槽中的第二功函数金属层的下部区域宽。

公开(公告)号：US20210028352A1

公开(公告)日：2021-01-28

申请号：US17064614

申请日：2020-10-07

Applicant: UNITED MICROELECTRONICS CORP.

Inventor： Chih-Wei Kuo ,  Meng-Jun Wang ,  Yi-Wei Tseng ,  Yu-Tsung Lai ,  Jiunn-Hsiung Liao

IPC: H01L43/02 ,  H01L43/12

Abstract: A method for fabricating semiconductor device includes the steps of: forming a magnetic tunneling junction (MTJ) on a substrate; forming a first inter-metal dielectric (IMD) layer around the MTJ; forming an etch stop layer on the first IMD layer; forming a second IMD layer on the etch stop layer; forming a patterned hard mask on the second IMD layer; performing a first etching process to form a contact hole in the second IMD layer for exposing the etch stop layer; performing a second etching process to remove the patterned hard mask; performing a third etching process to remove the etch stop layer and the first IMD layer for exposing the MTJ; and forming a metal interconnection in the contact hole.

公开(公告)号：US20210020693A1

公开(公告)日：2021-01-21

申请号：US16544923

申请日：2019-08-20

Applicant: UNITED MICROELECTRONICS CORP.

Inventor： Chih-Wei Kuo ,  Tai-Cheng Hou ,  Yu-Tsung Lai ,  Jiunn-Hsiung Liao

IPC: H01L27/22 ,  H01L43/02 ,  H01L43/08 ,  H01L43/12

Abstract: A method for fabricating semiconductor device includes the steps of: forming a first magnetic tunneling junction (MTJ) and a second MTJ on a substrate; forming a first top electrode on the first MTJ and a second top electrode on the second MTJ; forming a passivation layer on the first MTJ and the second MTJ; removing part of the passivation layer so that a top surface of all of the remaining passivation layer is lower than a top surface of the first electrode; and forming a ultra low-k (ULK) dielectric layer on the first MTJ and the second MTJ.

公开(公告)号：US20190096748A1

公开(公告)日：2019-03-28

申请号：US15712153

申请日：2017-09-22

Applicant: UNITED MICROELECTRONICS CORP.

Inventor： Chih-Wei Kuo ,  Yu-Tsung Lai ,  Jiunn-Hsiung Liao

IPC: H01L21/768

Abstract: A method for fabricating a semiconductor device includes the steps of: providing a first dielectric layer having a metal layer therein; forming a second dielectric layer on the first dielectric layer and the metal layer; forming a metal oxide layer on the second dielectric layer; performing a first etching process by using a chlorine-based etchant to remove part of the metal oxide layer to forma via opening and expose the second dielectric layer; forming a block layer on sidewalls of the metal oxide layer and a top surface of the second dielectric layer; and performing a second etching process by using a fluorine-based etchant to remove part of the block layer and part of the second dielectric layer for exposing a top surface of the metal layer.

公开(公告)号：US20150126015A1

公开(公告)日：2015-05-07

申请号：US14583122

申请日：2014-12-25

Applicant: UNITED MICROELECTRONICS CORP.

Inventor： Chieh-Te Chen ,  Yi-Po Lin ,  Jiunn-Hsiung Liao ,  Shui-Yen Lu ,  Li-Chiang Chen

IPC: H01L49/02

CPC classification number: H01L28/20 ,  H01L21/76897 ,  H01L27/0629 ,  H01L28/24 ,  H01L29/66545

Abstract: A semiconductor structure includes a substrate, a resist layer, a dielectric material, two U-shaped metal layers and two metals. The substrate has an isolation structure. The resist layer is located on the isolation structure. The dielectric material is located on the resist layer. Two U-shaped metal layers are located at the two sides of the dielectric material and on the resist layer. Two metals are respectively located on the two U-shaped metal layers. This way a semiconductor process for forming said semiconductor structure is provided.

Abstract translation: 半导体结构包括基板，抗蚀剂层，电介质材料，两个U形金属层和两种金属。 衬底具有隔离结构。 抗蚀剂层位于隔离结构上。 介电材料位于抗蚀剂层上。 两个U形金属层位于电介质材料的两侧和抗蚀剂层上。 两个金属分别位于两个U形金属层上。 以这种方式提供了用于形成所述半导体结构的半导体工艺。

公开(公告)号：US20140038399A1

公开(公告)日：2014-02-06

申请号：US14054839

申请日：2013-10-16

Applicant: UNITED MICROELECTRONICS CORP.

Inventor： Feng-Yi Chang ,  Yi-Po Lin ,  Jiunn-Hsiung Liao ,  Shang-Yuan Tsai ,  Chih-Wen Feng ,  Shui-Yen Lu ,  Ching-Pin Hsu

IPC: H01L21/308

CPC classification number: H01L21/308 ,  H01L21/31122 ,  H01L21/31144 ,  H01L21/76802 ,  H01L21/76816

Abstract: A method for fabricating an aperture is disclosed. The method includes the steps of: forming a hard mask containing carbon on a surface of a semiconductor substrate; and using a non-oxygen element containing gas to perform a first etching process for forming a first aperture in the hard mask. Before forming the hard mask, a gate which includes a contact etch stop layer and a dielectric layer is formed on the semiconductor substrate.

Abstract translation: 公开了一种制造孔的方法。 该方法包括以下步骤：在半导体衬底的表面上形成含有碳的硬掩模; 并且使用含有气体的非氧元素进行用于在硬掩模中形成第一孔的第一蚀刻工艺。 在形成硬掩模之前，在半导体衬底上形成包括接触蚀刻停止层和电介质层的栅极。

公开(公告)号：US20230413579A1

公开(公告)日：2023-12-21

申请号：US18242014

申请日：2023-09-05

Applicant: UNITED MICROELECTRONICS CORP.

Inventor： Chih-Wei Kuo ,  Tai-Cheng Hou ,  Yu-Tsung Lai ,  Jiunn-Hsiung Liao

IPC: H10B61/00 ,  H10N50/01 ,  H10N50/10 ,  H10N50/80

CPC classification number: H10B61/22 ,  H10N50/01 ,  H10N50/10 ,  H10N50/80

Abstract: A semiconductor device includes a first magnetic tunneling junction (MTJ) and a second MTJ on a substrate, a first top electrode on the first MTJ and a second top electrode on the second MTJ, a first spacer and a second spacer around the first MTJ, a third spacer and a fourth spacer around the second MTJ, a passivation layer between the second spacer and the third spacer as a top surface of the passivation layer includes a V-shape, and an ultra low-k (ULK) dielectric layer on the passivation layer and around the first MTJ and the second MTJ.

公开(公告)号：US11545522B2

公开(公告)日：2023-01-03

申请号：US17336279

申请日：2021-06-01

Applicant: UNITED MICROELECTRONICS CORP.

Inventor： Chih-Wei Kuo ,  Tai-Cheng Hou ,  Yu-Tsung Lai ,  Jiunn-Hsiung Liao

IPC: H01L27/22 ,  H01L43/12 ,  H01L43/08 ,  H01L43/02

Abstract: A semiconductor device includes a first magnetic tunneling junction (MTJ) and a second MTJ on a substrate, a first top electrode on the first MTJ and a second top electrode on the second MTJ, a passivation layer between the first MTJ and the second MTJ, and an ultra low-k (ULK) dielectric layer on and directly contacting the passivation layer and around the first MTJ and the second MTJ. Preferably, a top surface of the passivation layer includes a V-shape and a valley point of the V-shape is higher than a bottom surface of the first top electrode.

公开(公告)号：US11283007B2

公开(公告)日：2022-03-22

申请号：US17064614

申请日：2020-10-07

Applicant: UNITED MICROELECTRONICS CORP.

Inventor： Chih-Wei Kuo ,  Meng-Jun Wang ,  Yi-Wei Tseng ,  Yu-Tsung Lai ,  Jiunn-Hsiung Liao

IPC: H01L27/22 ,  H01L43/02 ,  H01L43/12

Abstract: A method for fabricating semiconductor device includes the steps of: forming a magnetic tunneling junction (MTJ) on a substrate; forming a first inter-metal dielectric (IMD) layer around the MTJ; forming an etch stop layer on the first IMD layer; forming a second IMD layer on the etch stop layer; forming a patterned hard mask on the second IMD layer; performing a first etching process to form a contact hole in the second IMD layer for exposing the etch stop layer; performing a second etching process to remove the patterned hard mask; performing a third etching process to remove the etch stop layer and the first IMD layer for exposing the MTJ; and forming a metal interconnection in the contact hole.

公开(公告)号：US11121307B2

公开(公告)日：2021-09-14

申请号：US16575414

申请日：2019-09-19

Applicant: UNITED MICROELECTRONICS CORP.

Inventor： Chih-Wei Kuo ,  Chia-Chang Hsu ,  Yu-Tsung Lai ,  Jiunn-Hsiung Liao

IPC: H01L27/22 ,  H01L43/02 ,  G11C11/16 ,  H01L43/12

Abstract: A method for fabricating semiconductor device includes the steps of: forming a first magnetic tunneling junction (MTJ) and a second MTJ on a substrate; forming a first top electrode on the first MTJ and a second top electrode on the second MTJ; forming a cap layer on the first MTJ and the second MTJ; forming a passivation layer on the cap layer; removing part of the passivation layer to form a recess between the first MTJ and the second MTJ; forming an anti-reflective layer on the passivation layer and filling the recess; and removing the anti-reflective layer, the passivation layer, and the cap layer to form a first contact hole.