公开(公告)号：US06221724B1

公开(公告)日：2001-04-24

申请号：US09187252

申请日：1998-11-06

Applicant: Bin Yu ,  Shekhar Pramanick

Inventor： Bin Yu ,  Shekhar Pramanick

IPC: H01L21336

CPC classification number: H01L29/6659 ,  H01L21/26533 ,  H01L21/2658 ,  H01L29/0638 ,  H01L29/0653 ,  H01L29/1083

Abstract: An integrated circuit and method of fabrication is provided for an integrated circuit having punch-through suppression. Unlike conventional methods of punch-through suppression wherein a dopant implant is fabricated in the device, the present invention utilizes an inert ion implantation process whereby inert ions are implanted through a fabricated gate structure on the semiconductor substrate to form a region of inert ion implant between source and drain regions of a device on the integrated circuit. This accumulation region prevents punch-through between source and drain regions of the device. In a second embodiment, the inert ion implantation is used in conjunction with the conventional punch-through dopant implant. In this second embodiment, diffusion of the implant during subsequent thermal annealing is suppressed by the inert ion accumulation in the subsurface region of the device. Accordingly, improved integrated circuits and methods of fabricating an integrated circuit having punch-through suppression are disclosed.

Abstract translation: 为具有穿通抑制的集成电路提供集成电路和制造方法。 不同于常规的穿透抑制方法，其中在器件中制造掺杂剂注入，本发明利用惰性离子注入工艺，其中惰性离子通过半导体衬底上制造的栅极结构注入，以形成惰性离子注入区域 集成电路上的器件的源极和漏极区域。 该积聚区域防止器件的源极和漏极区域之间穿透。 在第二实施例中，惰性离子注入与常规穿通掺杂剂注入相结合使用。 在该第二实施例中，通过装置的地下区域中的惰性离子累积来抑制随后的热退火期间的植入物的扩散。 因此，公开了改进的集成电路和制造具有穿通抑制的集成电路的方法。

公开(公告)号：US06214681B1

公开(公告)日：2001-04-10

申请号：US09491843

申请日：2000-01-26

Applicant: Bin Yu

Inventor： Bin Yu

IPC: H01L21336

CPC classification number: H01L29/66545 ,  H01L21/2807 ,  H01L21/82345 ,  H01L29/49 ,  Y10S148/058

Abstract: An ultra-large scale integrated (ULSI) circuit includes MOSFETs which have different threshold voltages and yet have the same channel characteristics. The MOSFETs utilize gate structures with heavily doped polysilicon and germanium material. The polysilicon and germanium materials or thin films are manufactured by low pressure chemical vapor deposition. A silicon buffer layer and oxide cap is used to prevent germanium outgassing.

Abstract translation: 超大规模集成（ULSI）电路包括具有不同阈值电压但具有相同通道特性的MOSFET。 MOSFET利用具有重掺杂多晶硅和锗材料的栅极结构。 多晶硅和锗材料或薄膜通过低压化学气相沉积制造。 硅缓冲层和氧化物盖用于防止锗脱气。

公开(公告)号：US06213869B1

公开(公告)日：2001-04-10

申请号：US09309105

申请日：1999-05-10

Applicant: Bin Yu ,  John C. Holst

Inventor： Bin Yu ,  John C. Holst

IPC: H01L218249

CPC classification number: H01L29/78615 ,  H01L27/092 ,  H01L27/1203 ,  H01L29/1079 ,  H01L29/78 ,  H01L29/7841

Abstract: A coupling capacitor is coupled between the gate and the body region of a MOSFET (Metal Oxide Semiconductor Field Effect Transistor). The body region of the MOSFET is electrically isolated to form a floating body region. The capacitance of the coupling capacitor is designed such that a BJT (Bipolar Junction Transistor) connected in parallel with the MOSFET turns on when the MOSFET turns on. In addition such a design of the coupling capacitor lowers the magnitude of the threshold voltage of the MOSFET when the MOSFET is turned on. Furthermore, the capacitance of the coupling capacitor is designed such that the magnitude of the threshold voltage of the MOSFET is raised when the MOSFET is turned off. Thus, the MOSFET type device of the present invention has both higher drive current when the MOSFET is turned on and lower steady state power dissipation when the MOSFET is turned off with a variable threshold voltage.

Abstract translation: 耦合电容器耦合在MOSFET（金属氧化物半导体场效应晶体管）的栅极和体区之间。 MOSFET的体区电气隔离以形成浮体区域。 耦合电容器的电容设计成使得当MOSFET导通时，与MOSFET并联连接的BJT（双极结晶体管）导通。 此外，当MOSFET导通时，耦合电容的这种设计降低了MOSFET的阈值电压的幅度。 此外，耦合电容器的电容被设计成使得当MOSFET被断开时MOSFET的阈值电压的幅度上升。 因此，本发明的MOSFET型器件在MOSFET导通时具有较高的驱动电流，并且当MOSFET以可变阈值电压关断时具有较低的稳态功耗。

公开(公告)号：US06190980B1

公开(公告)日：2001-02-20

申请号：US09150874

申请日：1998-09-10

Applicant: Bin Yu ,  Ming-Ren Lin ,  Emi Ishida

Inventor： Bin Yu ,  Ming-Ren Lin ,  Emi Ishida

IPC: H01L21336

CPC classification number: H01L29/66583 ,  H01L21/26586 ,  H01L29/66492 ,  H01L29/66537

Abstract: A method of performing tilted implantation for pocket, halo and source/drain extensions in ULSI dense structures. The method overcomes the process limit, due to shadowing effects, in dense structures, of using large angle tilted implant techniques in ULSI circuits. A gate opening in an oxide layer is defined and partially filled by insertion of nitride spacers to define an actual gate window opening. The small angle tilted implant technique has the equivalent doping effect of large angle tilted implants, and circumvents the maximum angle limit (&thgr;MAX) that occurs in the large angle implant method. The small angle tilted implant technique also automatically provides self alignment of the pocket/halo/extension implant to the gate of the device.

Abstract translation: 在ULSI致密结构中进行凹槽，晕圈和源极/漏极延伸的倾斜注入的方法。 该方法克服了在密集结构中的阴影效应，在ULSI电路中使用大角度倾斜植入技术的过程极限。 通过插入氮化物间隔物限定氧化层中的开口，并且通过插入氮化物间隔物来部分地填充以限定实际的门窗开口。 小角度倾斜植入技术具有大角度倾斜植入物的等效掺杂效应，并避开了大角度植入法中发生的最大角度限制（thetaMAX）。 小角度倾斜植入技术还自动提供袋/晕/延伸植入物到装置的门的自对准。

公开(公告)号：US06190952B1

公开(公告)日：2001-02-20

申请号：US09261273

申请日：1999-03-03

Applicant: Qi Xiang ,  Bin Yu

Inventor： Qi Xiang ,  Bin Yu

IPC: H01L2184

CPC classification number: H01L21/84 ,  H01L27/1203

Abstract: An ultra-large-scale integrated (ULSI) circuit includes MOSFETs which have different threshold voltages and yet have the same channel characteristics. The MOSFETs are provided on an SOI substrate. The thickness of a thin film on the substrate is varied to adjust the threshold voltage. The threshold voltage can be varied by roughly 240 mV. The thickness of the thin film can be adjusted through a LOCOS process.

Abstract translation: 超大规模集成（ULSI）电路包括具有不同阈值电压但具有相同通道特性的MOSFET。 MOSFET设置在SOI衬底上。 改变衬底上薄膜的厚度以调节阈值电压。 阈值电压可以改变大约240 mV。 薄膜的厚度可以通过LOCOS工艺进行调整。

公开(公告)号：US06184097B2

公开(公告)日：2001-02-06

申请号：US09255604

申请日：1999-02-22

Applicant: Bin Yu

Inventor： Bin Yu

IPC: H01L21336

CPC classification number: H01L29/66492

Abstract: A method of fabricating an integrated circuit with ultra-shallow source and drain junctions utilizes a dummy or sacrificial gate spacer. Ions are implanted and dopants are provided through the openings associated with sacrificial spacers to form the source and drain extensions. The openings can be filled with an insulative layer. The process can be utilized for P-channel or N-channel metal oxide semiconductor field effect transistors (MOSFETS).

Abstract translation: 制造具有超浅源极和漏极结的集成电路的方法利用虚拟或牺牲栅极间隔物。 植入离子并且通过与牺牲隔离物相关联的开口提供掺杂剂以形成源极和漏极延伸部。 开口可以填充绝缘层。 该过程可用于P沟道或N沟道金属氧化物半导体场效应晶体管（MOSFETS）。

公开(公告)号：US06180468B2

公开(公告)日：2001-01-30

申请号：US09177774

申请日：1998-10-23

Applicant: Bin Yu ,  Emi Ishida ,  Scott Luning ,  Timothy Thurgate

Inventor： Bin Yu ,  Emi Ishida ,  Scott Luning ,  Timothy Thurgate

IPC: H01L21336

CPC classification number: H01L29/66537 ,  H01L29/105 ,  H01L29/1083 ,  H01L29/66545 ,  H01L29/6659

Abstract: An ultra-low thermal budget process is provided for channel implant by using a reverse process sequence where a conventional MOS transistor is formed without the channel implant. The originally deposited polysilicon gate is removed, a nitride film deposition and etch is used to form a nitride spacer with a predetermined configuration, and a self-aligned channel implant is performed. After the channel implantation, anneal and super-retrograded doping, the nitride spacer and the gate oxide are removed for subsequent regrowth of a second gate oxide and a polysilicon deposition to form a second polysilicon gate.

Abstract translation: 通过使用反向工艺流程为通道注入提供超低热量预算过程，其中形成常规MOS晶体管而不需要沟道注入。 去除原来沉积的多晶硅栅极，使用氮化物膜沉积和蚀刻来形成具有预定配置的氮化物间隔物，并且执行自对准沟道注入。 在通道注入，退火和超退火掺杂之后，去除氮化物间隔物和栅极氧化物，以便随后的第二栅极氧化物的再生长和多晶硅沉积形成第二多晶硅栅极。

公开(公告)号：US6107667A

公开(公告)日：2000-08-22

申请号：US151146

申请日：1998-09-10

Applicant: Judy Xilin An ,  Bin Yu ,  Yowjuang W. Liu

Inventor： Judy Xilin An ,  Bin Yu ,  Yowjuang W. Liu

IPC: H01L21/28 ,  H01L21/336 ,  H01L29/49 ,  H01L29/51 ,  H01L29/76 ,  H01L27/088 ,  H01L27/095 ,  H01L29/94 ,  H01L31/062

CPC classification number: H01L21/28194 ,  H01L21/28123 ,  H01L29/4983 ,  H01L29/51 ,  H01L29/66545 ,  H01L29/6659 ,  Y10S257/90

Abstract: A method for making a ULSI MOSFET includes establishing a void in a field oxide layer on a silicon substrate and filling the center of the void with a gate electrode. A high-k gate insulator is sandwiched between the gate electrode and the substrate. Around the void, a low-k gate spacer is formed, with the gate spacer being disposed directly above the source and drain extensions of the MOSFET.

Abstract translation: 制造ULSI MOSFET的方法包括在硅衬底上的场氧化物层中建立空隙并用栅电极填充空隙的中心。 高k栅极绝缘体夹在栅电极和衬底之间。 围绕空隙，形成低k栅极间隔物，栅极间隔物直接设置在MOSFET的源极和漏极延伸部分的上方。

公开(公告)号：US6051470A

公开(公告)日：2000-04-18

申请号：US231651

申请日：1999-01-15

Applicant: Judy X. An ,  Bin Yu

Inventor： Judy X. An ,  Bin Yu

IPC: H01L21/28 ,  H01L21/336 ,  H01L29/49 ,  H01L29/78

CPC classification number: H01L29/66484 ,  H01L21/28105 ,  H01L29/4983 ,  H01L29/66553 ,  H01L29/6659 ,  H01L29/7831 ,  H01L29/66545

Abstract: A semiconductor device with reduced hot carrier injection and punch through is formed with a dual gate electrode comprising edge conductive portions, a central conductive portion, and dielectric sidewall spacers formed between the edge conductive portions and central conductive portion. The edge conductive portions provide high potential barriers against the active regions, thereby reducing threshold voltage roll off and leakage current.

Abstract translation: 具有减少的热载流子注入和穿通的半导体器件由双栅极电极形成，该双栅电极包括边缘导电部分，中心导电部分和形成在边缘导电部分和中心导电部分之间的电介质侧壁间隔物。 边缘导电部分提供抵抗有源区域的高电势势垒，从而降低阈值电压滚降和漏电流。

公开(公告)号：US5965438A

公开(公告)日：1999-10-12

申请号：US486204

申请日：1995-06-07

Applicant: Prakash G. Kadkade ,  Christopher B. Bare ,  Barbara Schnabel-Preikstas ,  Bin Yu

Inventor： Prakash G. Kadkade ,  Christopher B. Bare ,  Barbara Schnabel-Preikstas ,  Bin Yu

IPC: A01H4/00 ,  A01N1/02 ,  A01N3/00 ,  C12N5/02 ,  C12N5/04 ,  A01N63/00 ,  A01N65/00

CPC classification number: A01N3/00

Abstract: The present invention relates to methods for cryopreserving plant cells and to methods for recovering viable plant cells from long or short term cryopreservation. Plant cells to be cryopreserved can be grown in culture and pretreated with a solution containing an cryoprotective agent and a stabilizer. Pretreated cells are acclimated to a reduced temperature and loaded with a cryoprotective agent such as DMSO, propylene glycol or polyethylene glycol. Loaded cells are incubated with a vitrification solution which, for example, comprises a solution with a high concentration of the cryoprotective agent. Vitrified cells retain less than about 20% water content and can be frozen at cryopreservation temperatures for long periods of time without significantly altering the genotypic or phenotypic character of the cells. Plant cells may also be cryopreserved by lyophilizing cells prior to exposure to a vitrification solution. The combination of lyophilization and vitrification removes about 80% to about 95% of the plant cell's water. Cells can be successfully cryopreserved for long periods of time and viably recovered. The invention also relates to methods for the recovery of viable plant cells from cryopreservation. Cells are thawed to about room temperature and incubated in medium containing a cryoprotective agent and a stabilizer. The cryoprotective agent is removed and the cells successfully incubated and recovered in liquid or semi-solid growth medium. The invention also relates to the cryopreserved cells and to viable plant cells which have been recovered from long or short term cryopreservation.

Abstract translation: 本发明涉及用于冷冻保存植物细胞的方法和从长期或短期冷冻保存中回收活的植物细胞的方法。 待冷冻保存的植物细胞可以在培养物中生长并用含有冷冻保护剂和稳定剂的溶液预处理。 预处理的细胞适应于降低的温度，并加载冷冻保护剂如DMSO，丙二醇或聚乙二醇。 将加载的细胞与玻璃化溶液一起孵育，所述玻璃化溶液例如包含具有高浓度冷冻保护剂的溶液。 玻璃化细胞保留少于约20％的水含量，并且可以在冷冻保存温度下长时间冷冻，而不显着改变细胞的基因型或表型特征。 植物细胞也可以在暴露于玻璃化溶液之前由冻干细胞冷冻保存。 冻干和玻璃化的组合消除了植物细胞水的约80％至约95％。 细胞可以成功地冷冻保存长时间，有效地恢复。 本发明还涉及从冷冻保存中回收活的植物细胞的方法。 将细胞解冻至约室温，并在含有冷冻保护剂和稳定剂的培养基中孵育。 除去冷冻保护剂，并将细胞在液体或半固体生长培养基中成功培养和回收。 本发明还涉及冷冻保存的细胞和已经从长期或短期冷冻保存中回收的活的植物细胞。