公开(公告)号：US06876028B1

公开(公告)日：2005-04-05

申请号：US10605444

申请日：2003-09-30

申请人： Douglas D. Coolbaugh ,  Ebenezer E. Eshun ,  Jeffrey P. Gambino ,  Zhong-Xiang He ,  Vidhya Ramachandran

发明人： Douglas D. Coolbaugh ,  Ebenezer E. Eshun ,  Jeffrey P. Gambino ,  Zhong-Xiang He ,  Vidhya Ramachandran

IPC分类号： H01L21/02 ,  H01L21/768 ,  H10L27/108 ,  H10L29/76 ,  H10L29/94 ,  H10L31/119

CPC分类号： H01L21/7687 ,  H01L23/5223 ,  H01L23/53238 ,  H01L28/75 ,  H01L2924/0002 ,  H01L2924/00

摘要： A method and structure for a MIM capacitor, the structure including: an electronic device, comprising: an interlevel dielectric layer formed on a semiconductor substrate; a copper bottom electrode formed in the interlevel dielectric layer, a top surface of the bottom electrode co-planer with a top surface of the interlevel dielectric layer; a conductive diffusion barrier in direct contact with the top surface of the bottom electrode; a MIM dielectric in direct contact with a top surface of the conductive diffusion barrier; and a top electrode in direct contact with a top surface of the MIM dielectric. The conductive diffusion barrier may be recessed into the copper bottom electrode or an additional recessed conductive diffusion barrier provided. Compatible resistor and alignment mark structures are also disclosed.

公开(公告)号：US07282404B2

公开(公告)日：2007-10-16

申请号：US10709829

申请日：2004-06-01

申请人： Douglas D. Coolbaugh ,  Ebenezer E. Eshun ,  Zhong-Xiang He ,  William J. Murphy ,  Vidhya Ramachandran

发明人： Douglas D. Coolbaugh ,  Ebenezer E. Eshun ,  Zhong-Xiang He ,  William J. Murphy ,  Vidhya Ramachandran

IPC分类号： H01L21/8242

CPC分类号： H01L23/5223 ,  H01L2924/0002 ,  H01L2924/00

摘要： A method to integrate MIM capacitors into conductive interconnect levels, with low cost impact, and high yield, reliability and performance than existing integration methods is provided. This is accomplished by recessing a prior level dielectric for MIM capacitor level alignment followed by deposition and patterning of the MIM capacitor films. Specifically, the method includes providing a substrate including a wiring level, the wiring level comprising at least one conductive interconnect formed in a dielectric layer; selectively removing a portion of the dielectric layer to recess the dielectric layer below an upper surface of the at least one conductive interconnect; forming a dielectric stack upon the at least one conductive interconnect and the recessed dielectric layer; and forming a metal-insulator-metal (MIM) capacitor on the dielectric stack. The MIM capacitor includes a bottom plate electrode, a dielectric and a top plate electrode. The bottom and top plate electrodes can comprise the same or different conductive metal.

摘要翻译： 提供了一种将MIM电容器集成到导电互连级别中的方法，具有低成本影响，并且提供了比现有集成方法高的产量，可靠性和性能。 这通过将用于MIM电容器电平对准的先前级别的电介质凹入，然后MIM电容器膜的沉积和图案化来实现。 具体地，该方法包括提供包括布线层的衬底，所述布线层包括形成在电介质层中的至少一个导电布线; 选择性地去除所述电介质层的一部分以使所述电介质层在所述至少一个导电互连的上表面下方凹陷; 在所述至少一个导电互连和所述凹入的介电层上形成电介质叠层; 以及在介电叠层上形成金属绝缘体金属（MIM）电容器。 MIM电容器包括底板电极，电介质和顶板电极。 底板和顶板电极可以包括相同或不同的导电金属。

公开(公告)号：US20050274987A1

公开(公告)日：2005-12-15

申请号：US10709829

申请日：2004-06-01

申请人： Douglas Coolbaugh ,  Ebenezer Eshun ,  Zhong-Xiang He ,  William Murphy ,  Vidhya Ramachandran

发明人： Douglas Coolbaugh ,  Ebenezer Eshun ,  Zhong-Xiang He ,  William Murphy ,  Vidhya Ramachandran

IPC分类号： H01L21/00 ,  H01L23/52 ,  H01L23/522

CPC分类号： H01L23/5223 ,  H01L2924/0002 ,  H01L2924/00

摘要： A method to integrate MIM capacitors into conductive interconnect levels, with low cost impact, and high yield, reliability and performance than existing integration methods is provided. This is accomplished by recessing a prior level dielectric for MIM capacitor level alignment followed by deposition and patterning of the MIM capacitor films. Specifically, the method includes providing a substrate including a wiring level, the wiring level comprising at least one conductive interconnect formed in a dielectric layer; selectively removing a portion of the dielectric layer to recess the dielectric layer below an upper surface of the at least one conductive interconnect; forming a dielectric stack upon the at least one conductive interconnect and the recessed dielectric layer; and forming a metal-insulator-metal (MIM) capacitor on the dielectric stack. The MIM capacitor includes a bottom plate electrode, a dielectric and a top plate electrode. The bottom and top plate electrodes can comprise the same or different conductive metal.

摘要翻译： 提供了一种将MIM电容器集成到导电互连级别中的方法，具有低成本影响，并且提供了比现有集成方法高的产量，可靠性和性能。 这通过将用于MIM电容器电平对准的先前级别的电介质凹入，然后MIM电容器膜的沉积和图案化来实现。 具体地，该方法包括提供包括布线层的衬底，所述布线层包括形成在电介质层中的至少一个导电布线; 选择性地去除所述电介质层的一部分以使所述电介质层在所述至少一个导电互连的上表面下方凹陷; 在所述至少一个导电互连和所述凹入的介电层上形成电介质叠层; 以及在介电叠层上形成金属绝缘体金属（MIM）电容器。 MIM电容器包括底板电极，电介质和顶板电极。 底板和顶板电极可以包括相同或不同的导电金属。

公开(公告)号：US20050272219A1

公开(公告)日：2005-12-08

申请号：US10709907

申请日：2004-06-04

申请人： Douglas Coolbaugh ,  Ebenezer Eshun ,  Natalie Feilchenfeld ,  Michael Gautsch ,  Zhong-Xiang He ,  Matthew Moon ,  Vidhya Ramachandran ,  Barbara Waterhouse

发明人： Douglas Coolbaugh ,  Ebenezer Eshun ,  Natalie Feilchenfeld ,  Michael Gautsch ,  Zhong-Xiang He ,  Matthew Moon ,  Vidhya Ramachandran ,  Barbara Waterhouse

IPC分类号： H01L21/02 ,  H01L21/20 ,  H01L21/8242 ,  H01L27/01 ,  H01L27/08

CPC分类号： H01L23/5223 ,  H01L27/016 ,  H01L27/0805 ,  H01L28/40 ,  H01L2924/0002 ,  Y10T29/49002 ,  H01L2924/00

摘要： Disclosed is a method of fabricating a metal-insulator-metal (MIM) capacitor. In this method, a dielectric layer is formed above a lower conductor layer and an upper conductor layer is formed above the dielectric layer. The invention then forms an etch stop layer above the upper conductor layer and the dielectric layer, and forms a hardmask (silicon oxide hardmask, a silicon nitride hardmask, etc.) over the etch stop layer. Next, a photoresist is patterned above the hardmask, which allows the hardmask, the etch stop layer, the dielectric layer, and the lower conductor layer to be etched through the photoresist.

摘要翻译： 公开了一种制造金属 - 绝缘体 - 金属（MIM）电容器的方法。 在该方法中，在下导体层的上方形成电介质层，在电介质层的上方形成上导体层。 然后，本发明在上导体层和电介质层之上形成蚀刻停止层，并在蚀刻停止层上形成硬掩模（氧化硅硬掩模，氮化硅硬掩模等）。 接下来，在硬掩模上形成光致抗蚀剂，这允许通过光致抗蚀剂蚀刻硬掩模，蚀刻停止层，电介质层和下导体层。

公开(公告)号：US20050189615A1

公开(公告)日：2005-09-01

申请号：US10908491

申请日：2005-05-13

申请人： Wagdi Abadeer ,  Eric Adler ,  Zhong-Xiang He ,  Bradley Orner ,  Vidhya Ramachandran ,  Barbara Waterhouse ,  Michael Zierak

发明人： Wagdi Abadeer ,  Eric Adler ,  Zhong-Xiang He ,  Bradley Orner ,  Vidhya Ramachandran ,  Barbara Waterhouse ,  Michael Zierak

IPC分类号： H01L21/02 ,  H01L21/8242

CPC分类号： H01L28/57

摘要： The present invention relates to metal-insulator-metal (MIM) capacitors and field effect transistors (FETs) formed on a semiconductor substrate. The FETs are formed in Front End of Line (FEOL) levels below the MIM capacitors which are formed in upper Back End of Line (BEOL) levels. An insulator layer is selectively formed to encapsulate at least a top plate of the MIM capacitor to protect the MIM capacitor from damage due to process steps such as, for example, reactive ion etching. By selective formation of the insulator layer on the MIM capacitor, openings in the inter-level dielectric layers are provided so that hydrogen and/or deuterium diffusion to the FETs can occur.

摘要翻译： 本发明涉及形成在半导体衬底上的金属 - 绝缘体 - 金属（MIM）电容器和场效应晶体管（FET）。 FET形成在线路前端（FEOL）电平以下的MIM电容器下面，这些电容器形成在上部后端（BEOL）电平。 选择性地形成绝缘体层以封装MIM电容器的至少顶板，以保护MIM电容器免受由于诸如反应离子蚀刻等工艺步骤的损害。 通过在MIM电容器上选择性地形成绝缘体层，提供层间电介质层中的开口，使得可以发生氢和/或氘到FET的扩散。

公开(公告)号：US07825019B2

公开(公告)日：2010-11-02

申请号：US11863724

申请日：2007-09-28

申请人： Lawrence A. Clevenger ,  Stephan Grunow ,  Kaushik A. Kumar ,  Kevin Shawn Petrarca ,  Vidhya Ramachandran

发明人： Lawrence A. Clevenger ,  Stephan Grunow ,  Kaushik A. Kumar ,  Kevin Shawn Petrarca ,  Vidhya Ramachandran

IPC分类号： H01L21/44

CPC分类号： H01L23/5222 ,  H01L21/7682 ,  H01L21/76829 ,  H01L23/522 ,  H01L23/53295 ,  H01L2924/0002 ,  Y10S438/926 ,  Y10S438/928 ,  H01L2924/00

摘要： A semiconductor structure and a method for forming the same. The structure includes (a) a substrate which includes semiconductor devices and (b) a first ILD (inter-level dielectric) layer on top of the substrate. The structure further includes N first actual metal lines in the first ILD layer, N being a positive integer. The N first actual metal lines are electrically connected to the semiconductor devices. The structure further includes first trenches in the first ILD layer. The first trenches are not completely filled with solid materials. If the first trenches are completely filled with first dummy metal lines, then (i) the first dummy metal lines are not electrically connected to any semiconductor device and (ii) the N first actual metal lines and the first dummy metal lines provide an essentially uniform pattern density of metal lines across the first ILD layer.

摘要翻译： 半导体结构及其形成方法。 该结构包括（a）包括半导体器件的衬底和（b）在衬底顶部上的第一ILD（层间电介质）层。 该结构还包括第一ILD层中的N个第一实际金属线，N是正整数。 N个第一实际金属线电连接到半导体器件。 该结构还包括第一ILD层中的第一沟槽。 第一条沟没有完全填满固体材料。 如果第一沟槽被完全填充第一虚拟金属线，则（i）第一虚设金属线不与任何半导体器件电连接，并且（ii）N个第一实际金属线和第一虚拟金属线提供基本均匀的 跨越第一ILD层的金属线的图案密度。

公开(公告)号：US07473979B2

公开(公告)日：2009-01-06

申请号：US11443394

申请日：2006-05-30

申请人： Lawrence Clevenger ,  Timothy Joseph Dalton ,  Louis Hsu ,  Carl Radens ,  Vidhya Ramachandran ,  Keith Kwong Hon Wong ,  Chih-Chao Yang

发明人： Lawrence Clevenger ,  Timothy Joseph Dalton ,  Louis Hsu ,  Carl Radens ,  Vidhya Ramachandran ,  Keith Kwong Hon Wong ,  Chih-Chao Yang

IPC分类号： H01L29/92

CPC分类号： H01L21/84 ,  H01L21/76898 ,  H01L23/481 ,  H01L23/5223 ,  H01L27/1203 ,  H01L2924/0002 ,  Y10S438/957 ,  H01L2924/00

摘要： Methods are provided for fabricating semiconductor IC (integrated circuit) chips having high-Q on-chip capacitors formed on the chip back-side and connected to integrated circuits on the chip front-side using through-wafer interconnects. In one aspect, a semiconductor device includes a semiconductor substrate having a front side, a back side, and a buried insulating layer interposed between the front and back sides of the substrate. An integrated circuit is formed on the front side of the semiconductor substrate, an integrated capacitor is formed on the back side of the semiconductor substrate, and an interconnection structure is formed through the buried insulating layer to connect the integrated capacitor to the integrated circuit.

摘要翻译： 提供了用于制造半导体IC（集成电路）芯片的半导体IC（集成电路）芯片，其具有形成在芯片背面的高Q片上电容器，并使用晶片间互连连接到芯片正面的集成电路。 在一个方面，半导体器件包括一个半导体衬底，该半导体衬底具有介于衬底的正面和背面之间的正面，背面和掩埋绝缘层。 在半导体基板的正面形成有集成电路，在半导体基板的背面形成有集成电容器，通过埋入绝缘层形成互连结构，将集成电容器与集成电路连接起来。

公开(公告)号：US20070063244A1

公开(公告)日：2007-03-22

申请号：US11162776

申请日：2005-09-22

申请人： Herbert Ho ,  Subramanian Iyer ,  Vidhya Ramachandran

发明人： Herbert Ho ,  Subramanian Iyer ,  Vidhya Ramachandran

IPC分类号： H01L21/8242 ,  H01L29/94

CPC分类号： H01L28/91 ,  H01L21/84 ,  H01L27/10867 ,  H01L27/1087 ,  H01L27/1203

摘要： The present invention relates to a semiconductor device that contains a trench metal-insulator-metal (MIM) capacitor and a field effect transistor (FET). The trench MIM capacitor comprises a first metallic electrode layer located over interior walls of a trench in a substrate, a dielectric layer located in the trench over the first metallic electrode layer, and a second metallic electrode layer located in the trench over the dielectric layer. The FET comprises a source region, a drain region, a channel region between the source and drain regions, and a gate electrode over the channel region. The trench MIM capacitor is connected to the FET by a metallic strap. The semiconductor device of the present invention can be fabricated by a process in which the trench MIM capacitor is formed after the FET source/drain region but before the FET source/drain metal silicide contacts, for minimizing metal contamination in the FET.

摘要翻译： 本发明涉及一种包含沟槽金属 - 绝缘体 - 金属（MIM）电容器和场效应晶体管（FET）的半导体器件。 沟槽MIM电容器包括位于衬底中的沟槽的内壁上方的第一金属电极层，位于第一金属电极层上的沟槽中的电介质层和位于电介质层上的沟槽中的第二金属电极层。 FET包括源极区域，漏极区域，源极和漏极区域之间的沟道区域以及沟道区域上的栅极电极。 沟槽MIM电容器通过金属带连接到FET。 本发明的半导体器件可以通过在FET源极/漏极区域之后但FET源极/漏极金属硅化物接触之前形成沟槽MIM电容器以最小化FET中的金属污染的工艺来制造。

公开(公告)号：US20130113068A1

公开(公告)日：2013-05-09

申请号：US13588438

申请日：2012-08-17

申请人： Vidhya Ramachandran ,  Shiqun Gu

发明人： Vidhya Ramachandran ,  Shiqun Gu

IPC分类号： H01L23/48 ,  H01L21/768

CPC分类号： H01L21/76898 ,  H01L21/76831 ,  H01L23/481 ,  H01L2924/0002 ,  H01L2924/00

摘要： A low-K value dielectric protection spacer for patterning through substrate vias (TSVs) through a low-K value wiring layer. A method for forming a low-K value dielectric protection spacer includes etching a via opening through a low-K value dielectric interconnect layer. A protective layer is deposited in the via opening and on the low-K value dielectric interconnect layer. At least a portion of the protective layer is etched from the bottom of the via opening and from a horizontal surface of the low-K value dielectric interconnect layer. The etching leaving a protective sidewall spacer on a sidewall of the via opening. A through substrate via is etched through the bottom of the via opening and through the semiconductor substrate. The through substrate via is filled with a conductive material.

摘要翻译： 低K值介电保护间隔物，用于通过低K值布线层通过衬底通孔（TSV）进行构图。 形成低K值介电保护间隔物的方法包括通过低K值电介质互连层蚀刻通孔。 保护层沉积在通孔开口和低K值电介质互连层上。 保护层的至少一部分从通孔开口的底部和低K值电介质互连层的水平表面被蚀刻。 蚀刻在通孔开口的侧壁上留下保护性侧壁间隔物。 穿通基板通孔被蚀刻穿过通孔开口的底部并穿过半导体基板。 直通基板通孔用导电材料填充。

公开(公告)号：US07750388B2

公开(公告)日：2010-07-06

申请号：US11961076

申请日：2007-12-20

申请人： Herbert L. Ho ,  Subramanian S. Iyer ,  Vidhya Ramachandran

发明人： Herbert L. Ho ,  Subramanian S. Iyer ,  Vidhya Ramachandran

IPC分类号： H01L31/062 ,  H01L29/94 ,  G06F9/45

CPC分类号： H01L28/91 ,  H01L27/10861

摘要： The present invention relates to a semiconductor device that contains a trench metal-insulator-metal (MIM) capacitor and a field effect transistor (FET), and a design structure including the semiconductor device embodied in a machine readable medium. The trench MIM capacitor comprises a first metallic electrode layer located over interior walls of a trench in a substrate, a dielectric layer located in the trench over the first metallic electrode layer, and a second metallic electrode layer located in the trench over the dielectric layer. The FET comprises a source region, a drain region, a channel region between the source and drain regions, and a gate electrode over the channel region. The trench MIM capacitor is connected to the FET by a metallic strap. The semiconductor device of the present invention can be fabricated by a process in which the trench MIM capacitor is formed after the FET source/drain region but before the FET source/drain metal silicide contacts, for minimizing metal contamination in the FET.

摘要翻译： 本发明涉及一种包含沟槽金属 - 绝缘体金属（MIM）电容器和场效应晶体管（FET）的半导体器件，以及包括体现在机器可读介质中的半导体器件的设计结构。 沟槽MIM电容器包括位于衬底中的沟槽的内壁上方的第一金属电极层，位于第一金属电极层上的沟槽中的电介质层和位于电介质层上的沟槽中的第二金属电极层。 FET包括源极区域，漏极区域，源极和漏极区域之间的沟道区域以及沟道区域上的栅极电极。 沟槽MIM电容器通过金属带连接到FET。 本发明的半导体器件可以通过在FET源极/漏极区域之后但FET源极/漏极金属硅化物接触之前形成沟槽MIM电容器以最小化FET中的金属污染的工艺来制造。