公开(公告)号：US20120104490A1

公开(公告)日：2012-05-03

申请号：US13279085

申请日：2011-10-21

申请人： Hamza Yilmaz ,  Daniel Calafut ,  Christopher Boguslaw Kocon ,  Steven P. Sapp ,  Dean E. Probst ,  Nathan L. Kraft ,  Thomas E. Grebs ,  Rodney S. Ridley ,  Gary M. Dolny ,  Bruce D. Marchant ,  Joseph A. Yedinak

发明人： Hamza Yilmaz ,  Daniel Calafut ,  Christopher Boguslaw Kocon ,  Steven P. Sapp ,  Dean E. Probst ,  Nathan L. Kraft ,  Thomas E. Grebs ,  Rodney S. Ridley ,  Gary M. Dolny ,  Bruce D. Marchant ,  Joseph A. Yedinak

IPC分类号： H01L29/78 ,  H01L21/28

CPC分类号： H01L29/7827 ,  H01L21/26586 ,  H01L29/0878 ,  H01L29/402 ,  H01L29/407 ,  H01L29/41766 ,  H01L29/4236 ,  H01L29/42368 ,  H01L29/66666 ,  H01L29/66727 ,  H01L29/66734 ,  H01L29/7806 ,  H01L29/7811 ,  H01L29/7813 ,  H01L29/872

摘要： A field effect transistor includes a body region of a first conductivity type over a semiconductor region of a second conductivity type. A gate trench extends through the body region and terminates within the semiconductor region. At least one conductive shield electrode is disposed in the gate trench. A gate electrode is disposed in the gate trench over but insulated from the at least one conductive shield electrode. A shield dielectric layer insulates the at lease one conductive shield electrode from the semiconductor region. A gate dielectric layer insulates the gate electrode from the body region. The shield dielectric layer is formed such that it flares out and extends directly under the body region.

摘要翻译： 场效应晶体管包括在第二导电类型的半导体区域上的第一导电类型的体区。 栅极沟槽延伸穿过身体区域并终止在半导体区域内。 至少一个导电屏蔽电极设置在栅极沟槽中。 栅极电极设置在栅极沟槽中，但与至少一个导电屏蔽电极绝缘。 屏蔽介电层绝缘至少一个导电屏蔽电极与半导体区域。 栅极电介质层使栅电极与体区绝缘。 屏蔽电介质层形成为使其伸出并直接延伸到身体区域下方。

公开(公告)号：US20110089488A1

公开(公告)日：2011-04-21

申请号：US12982051

申请日：2010-12-30

申请人： Hamza Yilmaz ,  Daniel Calafut

发明人： Hamza Yilmaz ,  Daniel Calafut

IPC分类号： H01L29/78 ,  H01L21/768

CPC分类号： H01L29/7811 ,  H01L29/0646 ,  H01L29/0653 ,  H01L29/1095 ,  H01L29/402 ,  H01L29/407 ,  H01L29/41741 ,  H01L29/456 ,  H01L29/7803 ,  H01L29/7808 ,  H01L29/7813

摘要： A field effect transistor includes an active region and a termination region surrounding the active region. A resistive element is coupled to the termination region, wherein upon occurrence of avalanche breakdown in the termination region an avalanche current starts to flow in the termination region, and the resistive element is configured to induce a portion of the avalanche current to flow through the termination region and a remaining portion of the avalanche current to flow through the active region.

摘要翻译： 场效应晶体管包括有源区和围绕有源区的端接区。 电阻元件耦合到终端区域，其中当在终止区域中出现雪崩击穿时，雪崩电流开始在终止区域中流动，并且电阻元件被配置为诱导雪崩电流的一部分流过终端 区域和雪崩电流的剩余部分流过有源区域。

公开(公告)号：US20090200606A1

公开(公告)日：2009-08-13

申请号：US12425326

申请日：2009-04-16

申请人： Hamza Yilmaz ,  Daniel Calafut

发明人： Hamza Yilmaz ,  Daniel Calafut

IPC分类号： H01L29/78

CPC分类号： H01L29/7811 ,  H01L29/0646 ,  H01L29/0653 ,  H01L29/1095 ,  H01L29/402 ,  H01L29/407 ,  H01L29/41741 ,  H01L29/456 ,  H01L29/7803 ,  H01L29/7808 ,  H01L29/7813

摘要： A field effect transistor (FET) includes a source electrode for receiving an externally-provided source voltage. The FET further includes an active region and a termination region surrounding the active region. A resistive element is coupled to the termination region, wherein upon occurrence of avalanche breakdown in the termination region an avalanche current starts to flow in the termination region, and the resistive element is configured to induce a portion of the avalanche current to flow through the termination region and a remaining portion of the avalanche current to flow through the active region. During operation, one end of the resistive element is biased to the source voltage.

摘要翻译： 场效应晶体管（FET）包括用于接收外部提供的源极电压的源电极。 FET还包括有源区和围绕有源区的端接区。 电阻元件耦合到终端区域，其中当在终止区域中出现雪崩击穿时，雪崩电流开始在终止区域中流动，并且电阻元件被配置为诱导雪崩电流的一部分流过终端 区域和雪崩电流的剩余部分流过有源区域。 在操作期间，电阻元件的一端被偏压到源极电压。

公开(公告)号：US07923776B2

公开(公告)日：2011-04-12

申请号：US12698746

申请日：2010-02-02

申请人： Hamza Yilmaz ,  Daniel Calafut ,  Christopher Boguslaw Kocon ,  Steven P. Sapp ,  Dean E. Probst ,  Nathan L. Kraft ,  Thomas E. Grebs ,  Rodney S. Ridley ,  Gary M. Dolny ,  Bruce D. Marchant ,  Joseph A. Yedinak

发明人： Hamza Yilmaz ,  Daniel Calafut ,  Christopher Boguslaw Kocon ,  Steven P. Sapp ,  Dean E. Probst ,  Nathan L. Kraft ,  Thomas E. Grebs ,  Rodney S. Ridley ,  Gary M. Dolny ,  Bruce D. Marchant ,  Joseph A. Yedinak

IPC分类号： H01L29/772

CPC分类号： H01L29/7827 ,  H01L21/26586 ,  H01L29/0878 ,  H01L29/402 ,  H01L29/407 ,  H01L29/41766 ,  H01L29/4236 ,  H01L29/42368 ,  H01L29/66666 ,  H01L29/66727 ,  H01L29/66734 ,  H01L29/7806 ,  H01L29/7811 ,  H01L29/7813 ,  H01L29/872

摘要： A field effect transistor includes a body region of a first conductivity type in a semiconductor region of a second conductivity type. A gate trench extends through the body region and terminating within the semiconductor region. A source region of the second conductivity type extends in the body region adjacent the gate trench. The source region and an interface between the body region and the semiconductor region define a channel region therebetween which extends along the gate trench sidewall. A channel enhancement region of the second conductivity type is formed adjacent the gate trench. The channel enhancement region partially extends into a lower portion of the channel region to thereby reduce a resistance of the channel region.

摘要翻译： 场效应晶体管包括在第二导电类型的半导体区域中的第一导电类型的体区。 栅极沟槽延伸穿过身体区域并终止在半导体区域内。 第二导电类型的源极区域在与栅极沟槽相邻的体区中延伸。 源极区域和主体区域和半导体区域之间的界面限定其间沿着栅极沟槽侧壁延伸的沟道区域。 第二导电类型的沟道增强区域形成在栅极沟槽附近。 沟道增强区域部分地延伸到沟道区的下部，从而减小沟道区的电阻。

公开(公告)号：US07521773B2

公开(公告)日：2009-04-21

申请号：US11396362

申请日：2006-03-31

申请人： Hamza Yilmaz ,  Daniel Calafut

发明人： Hamza Yilmaz ,  Daniel Calafut

IPC分类号： H01L29/00

CPC分类号： H01L29/7811 ,  H01L29/0646 ,  H01L29/0653 ,  H01L29/1095 ,  H01L29/402 ,  H01L29/407 ,  H01L29/41741 ,  H01L29/456 ,  H01L29/7803 ,  H01L29/7808 ,  H01L29/7813

摘要： A field effect transistor includes an active region and a termination region surrounding the active region. A resistive element is coupled to the termination region, wherein upon occurrence of avalanche breakdown in the termination region an avalanche current starts to flow in the termination region, and the resistive element is configured to induce a portion of the avalanche current to flow through the termination region and a remaining portion of the avalanche current to flow through the active region.

摘要翻译： 场效应晶体管包括有源区和围绕有源区的端接区。 电阻元件耦合到终端区域，其中当在终止区域中出现雪崩击穿时，雪崩电流开始在终止区域中流动，并且电阻元件被配置为诱导雪崩电流的一部分流过终端 区域和雪崩电流的剩余部分流过有源区域。

公开(公告)号：US08610235B2

公开(公告)日：2013-12-17

申请号：US13241126

申请日：2011-09-22

申请人： Daniel Calafut ,  Yi Su ,  Jongoh Kim ,  Hong Chang ,  Hamza Yilmaz ,  Daniel S. Ng

发明人： Daniel Calafut ,  Yi Su ,  Jongoh Kim ,  Hong Chang ,  Hamza Yilmaz ,  Daniel S. Ng

IPC分类号： H01L29/47

CPC分类号： H01L29/7813 ,  H01L21/823487 ,  H01L27/06 ,  H01L27/0629 ,  H01L29/0649 ,  H01L29/0653 ,  H01L29/0878 ,  H01L29/407 ,  H01L29/41766 ,  H01L29/456 ,  H01L29/47 ,  H01L29/66143 ,  H01L29/7806 ,  H01L29/872

摘要： A Schottky diode includes a semiconductor layer formed on a semiconductor substrate; first and second trenches formed in the semiconductor layer where the first and second trenches are lined with a thin dielectric layer and being filled partially with a trench conductor layer and remaining portions of the first and second trenches are filled with a first dielectric layer; and a Schottky metal layer formed on a top surface of the semiconductor layer between the first trench and the second trench. The Schottky diode is formed with the Schottky metal layer as the anode and the semiconductor layer between the first and second trenches as the cathode. The trench conductor layer in each of the first and second trenches is electrically connected to the anode of the Schottky diode. In one embodiment, the Schottky diode is formed integrated with a trench field effect transistor on the same semiconductor substrate.

摘要翻译： 肖特基二极管包括形成在半导体衬底上的半导体层; 第一和第二沟槽形成在半导体层中，其中第一和第二沟槽衬有薄介电层，并部分地填充有沟槽导体层，并且第一和第二沟槽的剩余部分填充有第一介电层; 以及形成在所述第一沟槽和所述第二沟槽之间的所述半导体层的顶表面上的肖特金属层。 肖特基二极管由肖特基金属层作为阳极形成，第一和第二沟槽之间的半导体层作为阴极形成。 第一和第二沟槽中的每一个中的沟槽导体层电连接到肖特基二极管的阳极。 在一个实施例中，肖特基二极管与同一半导体衬底上的沟槽场效应晶体管集成。

公开(公告)号：US08063442B2

公开(公告)日：2011-11-22

申请号：US12982051

申请日：2010-12-30

申请人： Hamza Yilmaz ,  Daniel Calafut

发明人： Hamza Yilmaz ,  Daniel Calafut

IPC分类号： H01L29/76 ,  H01L29/94 ,  H01L31/062 ,  H01L31/113 ,  H01L31/119

CPC分类号： H01L29/7811 ,  H01L29/0646 ,  H01L29/0653 ,  H01L29/1095 ,  H01L29/402 ,  H01L29/407 ,  H01L29/41741 ,  H01L29/456 ,  H01L29/7803 ,  H01L29/7808 ,  H01L29/7813

摘要： A field effect transistor includes an active region and a termination region surrounding the active region. A resistive element is coupled to the termination region, wherein upon occurrence of avalanche breakdown in the termination region an avalanche current starts to flow in the termination region, and the resistive element is configured to induce a portion of the avalanche current to flow through the termination region and a remaining portion of the avalanche current to flow through the active region.

摘要翻译： 场效应晶体管包括有源区和围绕有源区的端接区。 电阻元件耦合到终端区域，其中当在终止区域中出现雪崩击穿时，雪崩电流开始在终止区域中流动，并且电阻元件被配置为诱导雪崩电流的一部分流过终端 区域和雪崩电流的剩余部分流过有源区域。

公开(公告)号：US07504303B2

公开(公告)日：2009-03-17

申请号：US11441386

申请日：2006-05-24

申请人： Hamza Yilmaz ,  Daniel Calafut ,  Christopher Boguslaw Kocon ,  Steven P. Sapp ,  Dean E. Probst ,  Nathan L. Kraft ,  Thomas E. Grebs ,  Rodney S. Ridley ,  Gary M. Dolny ,  Bruce D. Marchant ,  Joseph A. Yedinak

发明人： Hamza Yilmaz ,  Daniel Calafut ,  Christopher Boguslaw Kocon ,  Steven P. Sapp ,  Dean E. Probst ,  Nathan L. Kraft ,  Thomas E. Grebs ,  Rodney S. Ridley ,  Gary M. Dolny ,  Bruce D. Marchant ,  Joseph A. Yedinak

IPC分类号： H01L21/336

CPC分类号： H01L29/7827 ,  H01L21/26586 ,  H01L29/0878 ,  H01L29/402 ,  H01L29/407 ,  H01L29/41766 ,  H01L29/4236 ,  H01L29/42368 ,  H01L29/66666 ,  H01L29/66727 ,  H01L29/66734 ,  H01L29/7806 ,  H01L29/7811 ,  H01L29/7813 ,  H01L29/872

摘要： A method for forming a shielded gate field effect transistor includes the following steps. Trenches extending into a silicon region are formed using a mask that includes a protective layer. A shield dielectric layer lining sidewalls and bottom of each trench is formed. A shield electrode is formed in a bottom portion of each trench. Protective spacers are formed along upper sidewalls of each trench. An inter-electrode dielectric is formed over the shield electrode. The protective spacers and the protective layer of the mask prevent formation of inter-electrode dielectric along the upper sidewalls of each trench and over mesa surfaces adjacent each trench. A gate electrode is formed in each trench over the inter-electrode dielectric.

摘要翻译： 一种用于形成屏蔽栅极场效应晶体管的方法包括以下步骤。 使用包括保护层的掩模形成延伸到硅区域中的沟槽。 形成在每个沟槽的侧壁和底部内衬的屏蔽电介质层。 屏蔽电极形成在每个沟槽的底部。 保护间隔物沿每个沟槽的上侧壁形成。 在屏蔽电极上形成电极间电介质。 保护间隔物和掩模的保护层防止沿着每个沟槽的上侧壁和与每个沟槽相邻的台面表面形成电极间电介质。 在电极间电介质的每个沟槽中形成栅电极。

公开(公告)号：US07416948B2

公开(公告)日：2008-08-26

申请号：US11551992

申请日：2006-10-23

申请人： Nathan L. Kraft ,  Ashok Challa ,  Steven P. Sapp ,  Hamza Yilmaz ,  Daniel Calafut ,  Dean E. Probst ,  Rodney S. Ridley ,  Thomas E. Grebs ,  Christopher B. Kocon ,  Joseph A. Yedinak ,  Gary M. Dolny

发明人： Nathan L. Kraft ,  Ashok Challa ,  Steven P. Sapp ,  Hamza Yilmaz ,  Daniel Calafut ,  Dean E. Probst ,  Rodney S. Ridley ,  Thomas E. Grebs ,  Christopher B. Kocon ,  Joseph A. Yedinak ,  Gary M. Dolny

IPC分类号： H01L21/336

CPC分类号： H01L29/7813 ,  H01L21/26586 ,  H01L29/1095 ,  H01L29/407 ,  H01L29/42368 ,  H01L29/66734 ,  H01L2924/13055 ,  H01L2924/13091 ,  H01L2924/00

摘要： A field effect transistor is formed as follows. Trenches are formed in a semiconductor region of a first conductivity type. Each trench is partially filled with one or more materials. A dual-pass angled implant is carried out to implant dopants of a second conductivity type into the semiconductor region through an upper surface of the semiconductor region and through upper trench sidewalls not covered by the one or more material. A high temperature process is carried out to drive the implanted dopants deeper into the mesa region thereby forming body regions of the second conductivity type between adjacent trenches. Source regions of the first conductivity type are then formed in each body region.

摘要翻译： 场效应晶体管如下形成。 沟槽形成在第一导电类型的半导体区域中。 每个沟槽部分地填充有一种或多种材料。 执行双通角度注入以通过半导体区域的上表面和不被一种或多种材料覆盖的上沟槽侧壁将第二导电类型的掺杂剂注入半导体区域。 进行高温处理以将注入的掺杂剂更深地驱动到台面区域中，从而在相邻的沟槽之间形成第二导电类型的体区。 然后在每个身体区域中形成第一导电类型的源区域。

公开(公告)号：US20140175536A1

公开(公告)日：2014-06-26

申请号：US13724228

申请日：2012-12-21

申请人： Yeeheng Lee ,  Hong Chang ,  Jongoh Kim ,  Sik Liu ,  Hamza Yilmaz ,  Madhur Bobde ,  Daniel Calafut ,  John Chen

发明人： Yeeheng Lee ,  Hong Chang ,  Jongoh Kim ,  Sik Liu ,  Hamza Yilmaz ,  Madhur Bobde ,  Daniel Calafut ,  John Chen

IPC分类号： H01L21/8234 ,  H01L21/28 ,  H01L29/78 ,  H01L29/423 ,  H01L21/033 ,  H01L29/66

CPC分类号： H01L29/7813 ,  H01L21/28114 ,  H01L21/3081 ,  H01L21/823456 ,  H01L21/823462 ,  H01L21/823468 ,  H01L23/66 ,  H01L27/0248 ,  H01L27/0251 ,  H01L27/0292 ,  H01L29/0619 ,  H01L29/1095 ,  H01L29/42364 ,  H01L29/42376 ,  H01L29/6653 ,  H01L29/66553 ,  H01L29/6656 ,  H01L29/66719 ,  H01L29/66734 ,  H01L29/7803 ,  H01L29/7811 ,  H01L2924/0002 ,  H01L2924/00

摘要： Aspects of the present disclosure describe a high density trench-based power MOSFET with self-aligned source contacts. The source contacts are self-aligned with a first insulative spacer and a second insulative spacer, wherein the first spacer is resistant to an etching process that will selectively remove the material the second spacer is made from. Additionally, the active devices may have a two-step gate oxide, wherein a lower portion of the gate oxide has a thickness T2 that is larger than the thickness T1 of an upper portion of the gate oxide. It is emphasized that this abstract is provided to comply with rules requiring an abstract that will allow a searcher or other reader to quickly ascertain the subject matter of the technical disclosure. It is submitted with the understanding that it will not be used to interpret or limit the scope or meaning of the claims.

摘要翻译： 本公开的方面描述了具有自对准源触点的高密度基于沟槽的功率MOSFET。 源触点与第一绝缘间隔件和第二绝缘间隔件自对准，其中第一间隔件耐蚀刻工艺，该蚀刻工艺将选择性地去除由第二间隔件制成的材料。 此外，有源器件可以具有两级栅极氧化物，其中栅极氧化物的下部具有大于栅极氧化物的上部的厚度T1的厚度T2。 要强调的是，提供这个摘要是为了符合要求摘要的规则，允许搜索者或其他读者快速确定技术公开内容的主题。 提交它的理解是，它不会用于解释或限制权利要求的范围或含义。