公开(公告)号：US07442986B2

公开(公告)日：2008-10-28

申请号：US11797839

申请日：2007-05-08

申请人： Kan Yasui ,  Digh Hisamoto ,  Shinichiro Kimura

发明人： Kan Yasui ,  Digh Hisamoto ,  Shinichiro Kimura

IPC分类号： H01L29/788

CPC分类号： H01L27/11568 ,  H01L21/28273 ,  H01L21/28282 ,  H01L27/115 ,  H01L27/11521 ,  H01L29/4232 ,  H01L29/792

摘要： In a split gate type nonvolatile memory cell in which a MOS transistor for a nonvolatile memory using a charge storing film and a MOS transistor for selecting it are adjacently formed, the charge storing characteristic is improved and the resistance of the gate electrode is reduced. In order to prevent the thickness reduction at the corner portion of the charge storing film and improve the charge storing characteristic, a taper is formed on the sidewall of the select gate electrode. Also, in order to stably perform a silicide process for reducing the resistance of the self-aligned gate electrode, the sidewall of the select gate electrode is recessed. Alternatively, a discontinuity is formed between the upper portion of the self-aligned gate electrode and the upper portion of the select gate electrode.

摘要翻译： 在其中使用电荷存储膜的非易失性存储器的MOS晶体管和用于选择它的MOS晶体管相邻形成的分离栅极型非易失性存储单元中，电荷存储特性得到改善，栅电极的电阻降低。 为了防止电荷存储薄膜的拐角部分的厚度减小并且提高电荷存储特性，在选择栅电极的侧壁上形成锥形。 此外，为了稳定地进行用于降低自对准栅电极的电阻的硅化物工艺，选择栅电极的侧壁凹陷。 或者，在自对准栅电极的上部和选择栅电极的上部之间形成不连续。

公开(公告)号：US20060234454A1

公开(公告)日：2006-10-19

申请号：US11404899

申请日：2006-04-17

申请人： Kan Yasui ,  Shinichiro Kimura ,  Digh Hisamoto ,  Tetsuya Ishimaru

发明人： Kan Yasui ,  Shinichiro Kimura ,  Digh Hisamoto ,  Tetsuya Ishimaru

IPC分类号： H01L21/336

CPC分类号： H01L29/792 ,  G11C16/0425 ,  G11C16/0466 ,  H01L27/105 ,  H01L27/11568 ,  H01L29/40117 ,  H01L29/42344 ,  H01L29/66833

摘要： After forming a first dielectric film on the main surface of a semiconductor substrate, a first conductive film is formed on the first dielectric film, and then, the surface of the first conductive film is planarized by a CMP method. Subsequently, the first conductive film and the first dielectric film are etched, thereby forming a select gate having a first gate electrode and a first gate dielectric film. Subsequently, after forming a second dielectric film on the sidewall of the first gate electrode and the main surface, a second conductive film is formed on the second dielectric film, and the second conductive film is etched, thereby forming a memory gate having a second gate electrode and a second gate dielectric film.

摘要翻译： 在半导体衬底的主表面上形成第一电介质膜之后，在第一电介质膜上形成第一导电膜，然后通过CMP方法将第一导电膜的表面平坦化。 随后，蚀刻第一导电膜和第一电介质膜，从而形成具有第一栅极电极和第一栅极电介质膜的选择栅极。 随后，在第一栅电极和主表面的侧壁上形成第二电介质膜之后，在第二电介质膜上形成第二导电膜，并且蚀刻第二导电膜，从而形成具有第二栅极的存储栅极 电极和第二栅极电介质膜。

公开(公告)号：US20050230736A1

公开(公告)日：2005-10-20

申请号：US11030900

申请日：2005-01-10

申请人： Tetsuya Ishimaru ,  Digh Hisamoto ,  Kan Yasui ,  Shinichiro Kimura

发明人： Tetsuya Ishimaru ,  Digh Hisamoto ,  Kan Yasui ,  Shinichiro Kimura

IPC分类号： G11C16/02 ,  G11C16/04 ,  H01L21/28 ,  H01L21/336 ,  H01L21/8247 ,  H01L27/105 ,  H01L27/115 ,  H01L29/78 ,  H01L29/788 ,  H01L29/792

CPC分类号： G11C16/0466 ,  H01L21/28282 ,  H01L29/66833 ,  H01L29/792

摘要： In a situation where a memory cell includes an ONO film, which comprises a silicon nitride film for charge storage and oxide films positioned above and below the silicon nitride film; a memory gate above the ONO film; a select gate, which is adjacent to a lateral surface of the memory gate via the ONO film; a gate insulator positioned below the select gate; a source region; and a drain region, an erase operation is performed by injecting holes generated by BTBT into the silicon nitride film while applying a positive potential to the source region, applying a negative potential to the memory gate, applying a positive potential to the select gate, and flowing a current from the drain region to the source region, thus improving the characteristics of a nonvolatile semiconductor memory device.

摘要翻译： 在存储单元包括ONO膜的情况下，其包括用于电荷存储的氮化硅膜和位于氮化硅膜上方和下方的氧化膜; 在ONO电影上方的记忆门; 选择栅极，其经由ONO膜与存储栅的侧表面相邻; 位于选择门下方的栅极绝缘体; 源区; 和漏极区域，通过将BTBT产生的空穴注入氮化硅膜，同时向源极区域施加正电位，向存储栅极施加负电位，向选择栅极施加正电位，进行擦除操作，以及 使电流从漏极区域流向源极区域，从而改善非易失性半导体存储器件的特性。

公开(公告)号：US06953728B2

公开(公告)日：2005-10-11

申请号：US10775236

申请日：2004-02-11

申请人： Eiichi Murakami ,  Akio Nishida ,  Kazunori Umeda ,  Kousuke Okuyama ,  Toshiaki Yamanaka ,  Jiro Yugami ,  Shinichiro Kimura

发明人： Eiichi Murakami ,  Akio Nishida ,  Kazunori Umeda ,  Kousuke Okuyama ,  Toshiaki Yamanaka ,  Jiro Yugami ,  Shinichiro Kimura

IPC分类号： H01L29/43 ,  H01L21/8234 ,  H01L21/8238 ,  H01L21/8242 ,  H01L27/088 ,  H01L27/092 ,  H01L27/10 ,  H01L27/105 ,  H01L27/108 ,  H01L29/423 ,  H01L29/49 ,  H01L29/78 ,  H01L21/331 ,  H01L21/8222

CPC分类号： H01L27/10894 ,  H01L21/823412 ,  H01L21/823462 ,  H01L27/105 ,  H01L27/10873

摘要： This semiconductor device manufacturing method comprises the steps of: forming a thick gate oxide film (thick oxide film) in a first region of a substrate, forming a thin gate oxide film (thin oxide layer) in a second region, and then, applying oxynitridation to these gate oxide films; forming gate electrodes to 1d on these gate oxide films; and implanting an ion that contains nitrogen or nitrogen atoms into at least one part of an interface between the hick gate oxide film (thick oxide film) and the substrate before or after the step of forming the gate electrodes, thereby forming a highly oxy-nitrided region. In this manner, in a semiconductor device in which there coexist a MISFET having a thin gate insulation film and a MISFET having a thick gate insulation film, hot carrier reliability of the MISFET having the thick gate insulation film is improved.

摘要翻译： 该半导体器件制造方法包括以下步骤：在衬底的第一区域形成厚栅氧化膜（厚氧化物膜），在第二区域形成薄的栅极氧化膜（薄氧化物层），然后施加氧氮化 到这些栅氧化膜; 在这些栅极氧化膜上形成栅电极至1d; 以及在形成栅电极的步骤之前或之后，将含有氮或氮原子的离子注入到所述堰栅氧化膜（厚氧化物膜）和所述衬底之间的界面的至少一部分中，从而形成高度氧氮化 地区。 以这种方式，在并入具有薄栅极绝缘膜的MISFET和具有厚栅极绝缘膜的MISFET的半导体器件中，具有厚栅极绝缘膜的MISFET的热载流子可靠性得到改善。

公开(公告)号：US20050085039A1

公开(公告)日：2005-04-21

申请号：US10901347

申请日：2004-07-29

申请人： Kan Yasui ,  Digh Hisamoto ,  Shinichiro Kimura

发明人： Kan Yasui ,  Digh Hisamoto ,  Shinichiro Kimura

IPC分类号： H01L21/28 ,  H01L21/3205 ,  H01L21/336 ,  H01L21/4763 ,  H01L21/8246 ,  H01L21/8247 ,  H01L27/115 ,  H01L29/423 ,  H01L29/788 ,  H01L29/792

CPC分类号： H01L27/11568 ,  H01L21/28273 ,  H01L21/28282 ,  H01L27/115 ,  H01L27/11521 ,  H01L29/4232 ,  H01L29/792

摘要： In a split gate type nonvolatile memory cell in which a MOS transistor for a nonvolatile memory using a charge storing film and a MOS transistor for selecting it are adjacently formed, the charge storing characteristic is improved and the resistance of the gate electrode is reduced. In order to prevent the thickness reduction at the corner portion of the charge storing film and improve the charge storing characteristic, a taper is formed on the sidewall of the select gate electrode. Also, in order to stably perform a silicide process for reducing the resistance of the self-aligned gate electrode, the sidewall of the select gate electrode is recessed. Alternatively, a discontinuity is formed between the upper portion of the self-aligned gate electrode and the upper portion of the select gate electrode.

摘要翻译： 在其中使用电荷存储膜的非易失性存储器的MOS晶体管和用于选择它的MOS晶体管相邻形成的分离栅极型非易失性存储单元中，电荷存储特性得到改善，栅电极的电阻降低。 为了防止电荷存储薄膜的拐角部分的厚度减小并且提高电荷存储特性，在选择栅电极的侧壁上形成锥形。 此外，为了稳定地进行用于降低自对准栅电极的电阻的硅化物工艺，选择栅电极的侧壁凹陷。 或者，在自对准栅电极的上部和选择栅电极的上部之间形成不连续。

公开(公告)号：US06727146B2

公开(公告)日：2004-04-27

申请号：US10288448

申请日：2002-11-06

申请人： Eiichi Murakami ,  Akio Nishida ,  Kazunori Umeda ,  Kousuke Okuyama ,  Toshiaki Yamanaka ,  Jiro Yugami ,  Shinichiro Kimura

发明人： Eiichi Murakami ,  Akio Nishida ,  Kazunori Umeda ,  Kousuke Okuyama ,  Toshiaki Yamanaka ,  Jiro Yugami ,  Shinichiro Kimura

IPC分类号： H01L218234

CPC分类号： H01L27/10894 ,  H01L21/823412 ,  H01L21/823462 ,  H01L27/105 ,  H01L27/10873

摘要： This semiconductor device manufacturing method comprises the steps of: forming a thick gate oxide film (thick oxide film) in a first region of a substrate, forming a thin gate oxide film (thin oxide layer) in a second region, and then, applying oxynitridation to these gate oxide films; forming gate electrodes to 1d on these gate oxide films; and implanting an ion that contains nitrogen or nitrogen atoms into at least one part of an interface between the hick gate oxide film (thick oxide film) and the substrate before or after the step of forming the gate electrodes, thereby forming a highly oxy-nitrided region. In this manner, in a semiconductor device in which there coexist a MISFET having a thin gate insulation film and a MISFET having a thick gate insulation film, hot carrier reliability of the MISFET having the thick gate insulation film is improved.

摘要翻译： 该半导体器件制造方法包括以下步骤：在衬底的第一区域形成厚栅氧化膜（厚氧化物膜），在第二区域形成薄的栅极氧化膜（薄氧化物层），然后施加氧氮化 到这些栅氧化膜; 在这些栅极氧化膜上形成栅电极至1d; 以及在形成栅电极的步骤之前或之后，将含有氮或氮原子的离子注入到所述堰栅氧化膜（厚氧化物膜）和所述衬底之间的界面的至少一部分中，从而形成高度氧氮化 地区。 以这种方式，在并入具有薄栅极绝缘膜的MISFET和具有厚栅极绝缘膜的MISFET的半导体器件中，具有厚栅极绝缘膜的MISFET的热载流子可靠性得到改善。

公开(公告)号：US06204184B1

公开(公告)日：2001-03-20

申请号：US09276969

申请日：1999-03-26

申请人： Akio Nishida ,  Kikuo Kusukawa ,  Toshiaki Yamanaka ,  Natsuki Yokoyama ,  Shinichiro Kimura ,  Norio Suzuki ,  Osamu Tsuchiya ,  Atsushi Ogishima

发明人： Akio Nishida ,  Kikuo Kusukawa ,  Toshiaki Yamanaka ,  Natsuki Yokoyama ,  Shinichiro Kimura ,  Norio Suzuki ,  Osamu Tsuchiya ,  Atsushi Ogishima

IPC分类号： H01L21302

CPC分类号： H01L27/10894 ,  H01L21/31053 ,  H01L21/76229 ,  H01L21/823437 ,  H01L21/823481 ,  H01L27/10814

摘要： In a method of manufacturing a semiconductor device having a memory mat portion in which an active region and a field region are formed densely, after a polishing stopper film is deposited on a semiconductor substrate, there are formed grooves by etching a polishing stopper film of a field region and the semiconductor substrate. Then, after an insulating film is deposited so as to fill the grooves, the insulating film is partly removed from the memory mat portion by etching. Under this state, the insulating film is chemically mechanically polished until the polishing stopper film is exposed. The film thickness of the polishing stopper film on the active region can be reduced, and an electrical element isolation characteristic of the field region can be improved. At the same time, upon chemical mechanical polishing, a silicon substrate can be prevented from being exposed at the central portion of the memory mat portion and the insulating film can be prevented from being left on the silicon nitride film near the outer periphery, thereby making it possible to form elements having uniform electrical characteristics on all active regions of the memory mat portion.

摘要翻译： 在制造半导体器件的方法中，其具有密集形成有源区和场区的存储垫部分，在半导体衬底上沉积抛光阻挡膜之后，通过蚀刻抛光阻挡膜形成凹槽 场区域和半导体衬底。 然后，在沉积绝缘膜以填充凹槽之后，通过蚀刻将绝缘膜部分地从存储垫部分除去。 在这种状态下，绝缘膜被化学机械抛光直到抛光阻挡膜露出。 能够减少有源区域上的研磨停止膜的膜厚，能够提高场区域的电气元件隔离特性。 同时，在化学机械抛光时，可以防止硅衬底暴露在存储垫部分的中心部分，并且可以防止绝缘膜留在靠近外周的氮化硅膜上，从而使 可以在存储垫部分的所有有效区域上形成具有均匀电特性的元件。

公开(公告)号：US4742018A

公开(公告)日：1988-05-03

申请号：US936602

申请日：1986-12-01

申请人： Shinichiro Kimura ,  Hideo Sunami

发明人： Shinichiro Kimura ,  Hideo Sunami

IPC分类号： H01L27/04 ,  H01L21/02 ,  H01L21/822 ,  H01L21/8242 ,  H01L27/10 ,  H01L27/108 ,  H01L21/70 ,  H01L27/00

CPC分类号： H01L27/10852 ,  H01L27/10817 ,  H01L28/87 ,  Y10S148/014

摘要： A process for producing a memory cell having a stacked capacitor. As the reduction in device size of memory cells progresses, it becomes difficult to obtain a satisfactorily large capacitance even with a stacked capacitor structure. To enable a larger capacitance to be obtained for the same occupied area, projections and recesses are provided on the surface of a capacitor electrode. It is possible, according to the process, to readily produce projections and recesses for increasing the storage capacitance.

摘要翻译： 一种具有叠层电容器的存储单元的制造方法。 随着存储器单元的器件尺寸的减小进行，即使堆叠的电容器结构也难以获得令人满意的大电容。 为了能够为相同的占用面积获得更大的电容，在电容器电极的表面上设置有凹凸。 根据该方法，可以容易地产生用于增加存储电容的凸起和凹槽。

公开(公告)号：US08643117B2

公开(公告)日：2014-02-04

申请号：US13145108

申请日：2010-01-18

申请人： Ryuta Tsuchiya ,  Nobuyuki Sugii ,  Yusuke Morita ,  Hiroyuki Yoshimoto ,  Takashi Ishigaki ,  Shinichiro Kimura

发明人： Ryuta Tsuchiya ,  Nobuyuki Sugii ,  Yusuke Morita ,  Hiroyuki Yoshimoto ,  Takashi Ishigaki ,  Shinichiro Kimura

IPC分类号： H01L21/70

CPC分类号： H01L21/84 ,  H01L27/11 ,  H01L27/1108 ,  H01L27/1203 ,  H01L29/41783 ,  H01L29/665 ,  H01L29/78648

摘要： In an SOI-MISFET that operates with low power consumption at a high speed, an element area is reduced. While a diffusion layer region of an N-conductivity type MISFET region of the SOI type MISFET and a diffusion layer region of a P-conductivity type MISFET region of the SOI type MISFET are formed as a common region, well diffusion layers that apply substrate potentials to the N-conductivity type MISFET region and the P-conductivity type MISFET region are separated from each other by an STI layer. The diffusion layer regions that are located in the N- and P-conductivity type MISFET regions) and serve as an output portion of a CMISFET are formed as a common region and directly connected by silicified metal so that the element area is reduced.

摘要翻译： 在以高功率低功耗工作的SOI-MISFET中，元件面积减小。 虽然SOI型MISFET的N导电型MISFET区域的扩散层区域和SOI型MISFET的P导电型MISFET区域的扩散层区域形成为公共区域，但是施加衬底电位的阱扩散层 通过STI层将N导电型MISFET区域和P导电型MISFET区域相互分离。 位于N和P导电型MISFET区域中的扩散层区域）作为CMISFET的输出部分形成为公共区域，并通过硅化金属直接连接，使元件面积减小。

公开(公告)号：US08409936B2

公开(公告)日：2013-04-02

申请号：US13363268

申请日：2012-01-31

申请人： Ryuta Tsuchiya ,  Shinichiro Kimura

发明人： Ryuta Tsuchiya ,  Shinichiro Kimura

IPC分类号： H01L21/84

CPC分类号： H01L27/12 ,  H01L21/823878 ,  H01L21/84 ,  H01L27/0922 ,  H01L27/1207

摘要： A device and a method for manufacturing the same in which with device includes a single crystal semiconductor substrate and an SOI substrate separated from the single crystal semiconductor substrate by a thin buried insulating film and having a thin single crystal semiconductor thin film (SOI layer) in which well diffusion layer regions, drain regions, gate insulating films, and gate electrodes of the SOI-type MISFET and the bulk-type MISFET are formed in the same steps. The bulk-type MISFET and the SOI-type MISFET are formed on the same substrate, so that board area is reduced and a simple process can be realized by making manufacturing steps of the SOI-type MISFET and the bulk-type MISFET common.

摘要翻译： 一种器件及其制造方法，其中，器件包括单晶半导体衬底和通过薄的掩埋绝缘膜与单晶半导体衬底分离并具有薄单晶半导体薄膜（SOI层）的SOI衬底 以相同的步骤形成SOI型MISFET和体型MISFET的良好扩散层区域，漏极区域，栅极绝缘膜和栅极电极。 本体型MISFET和SOI型MISFET形成在同一衬底上，从而通过制造SOI型MISFET和体型MISFET的制造步骤，可以减少电路板面积并简化工艺。