公开(公告)号：DE69809868T2

公开(公告)日：2003-10-09

申请号：DE69809868

申请日：1998-09-25

Applicant: SIEMENS AG ,  IBM

Inventor： GRUENING ULRIKE ,  BEINTNER JOCHEN ,  RADENS CARL

IPC: H01L21/76 ,  H01L21/308 ,  H01L21/31 ,  H01L21/316 ,  H01L21/318 ,  H01L21/763 ,  H01L21/8242 ,  H01L27/108 ,  H01L21/762

Abstract: A pad layer disposed on a semiconductor substrate 102 and a buffer layer 108 disposed within the pad layer such that the pad layer is divided into a dielectric layer 106 below the buffer layer and a mask layer 110 above the buffer layer. A method of forming layers with uniform planarity and thickness on a semiconductor chip includes the steps of providing a substrate having a thermal pad 106 formed thereon, forming a dielectric layer 106 on the thermal pad, forming a buffer layer 108 on the dielectric layer wherein the buffer layer is made from a different material than the dielectric layer and forming a mask layer 110 on the buffer layer wherein the buffer layer is made from a different material than the mask layer.

公开(公告)号：DE69809868D1

公开(公告)日：2003-01-16

申请号：DE69809868

申请日：1998-09-25

Applicant: SIEMENS AG ,  IBM

Inventor： GRUENING ULRIKE ,  BEINTNER JOCHEN ,  RADENS CARL

IPC: H01L21/76 ,  H01L21/308 ,  H01L21/31 ,  H01L21/316 ,  H01L21/318 ,  H01L21/763 ,  H01L21/8242 ,  H01L27/108 ,  H01L21/762

Abstract: A pad layer disposed on a semiconductor substrate 102 and a buffer layer 108 disposed within the pad layer such that the pad layer is divided into a dielectric layer 106 below the buffer layer and a mask layer 110 above the buffer layer. A method of forming layers with uniform planarity and thickness on a semiconductor chip includes the steps of providing a substrate having a thermal pad 106 formed thereon, forming a dielectric layer 106 on the thermal pad, forming a buffer layer 108 on the dielectric layer wherein the buffer layer is made from a different material than the dielectric layer and forming a mask layer 110 on the buffer layer wherein the buffer layer is made from a different material than the mask layer.

公开(公告)号：AT546837T

公开(公告)日：2012-03-15

申请号：AT04704467

申请日：2004-01-22

Applicant: IBM

Inventor： BEINTNER JOCHEN ,  CHIDAMBARRAO DURESETI ,  DIVKARUNI RAMACHANDRA

IPC: H01L29/786 ,  H01L21/336 ,  H01L21/8238

Abstract: A new class of high-density, vertical Fin-FET devices that exhibit low contact resistance is described. These vertical Fin-FET devices have vertical silicon “fins” (12A) that act as the transistor body. Doped source and drain regions (26A, 28A) are formed at the bottoms and tops, respectively, of the fins (12A). Gates (24A, 24B) are formed along sidewalls of the fins. Current flows vertically through the fins (12A) between the source and drain regions (26A, 28A) when an appropriate bias is applied to the gates (24A, 24B). An integrated process for forming pFET, nFET, multi-fin, single-fin, multi-gate and double-gate vertical Fin-FETs simultaneously is described.

公开(公告)号：DE102004013926B4

公开(公告)日：2007-01-04

申请号：DE102004013926

申请日：2004-03-22

Applicant: INFINEON TECHNOLOGIES AG ,  IBM

Inventor： BERGNER WOLFGANG ,  BEINTNER JOCHEN ,  CONTI RICHARD A ,  KNORR ANDREAS ,  WEIS ROLF

IPC: H01L27/108 ,  H01L21/8242 ,  H01L29/94

Abstract: The invention provides a trench storage structure that includes a substrate having a trench, a capacitor conductor in the lower part of the trench, a conductive node strap in the trench adjacent the capacitor conductor, a trench top oxide above the capacitor conductor, and a conductive buried strap in the substrate adjacent the trench top oxide. The trench top oxide includes a doped trench top oxide layer above the conductive strap, and an undoped trench top oxide layer above the doped trench top oxide layer.

公开(公告)号：DE10334946B4

公开(公告)日：2006-03-09

申请号：DE10334946

申请日：2003-07-31

Applicant: INFINEON TECHNOLOGIES AG ,  IBM

Inventor： BEINTNER JOCHEN ,  CHUDZIK MICHAEL PATRICK ,  RAJARAO JAMMY ,  DIVAKARUNI RAMACHANDRA

IPC: H01L21/334 ,  H01L21/8242 ,  H01L27/108

Abstract: In a vertical-transistor DRAM cell, the problem of making a reliable electrical connection between the node of the deep trench capacitor and the lower electrode of the vertical transistor is solved by; depositing a temporary insulator layer, forming a vertical spacer on the trench walls above the temporary insulator, then stripping the insulator to expose the substrate walls; diffusing dopant into the substrate walls to form a self-aligned extension of the buried strap; depositing the final gate insulator; and then forming the upper portion of the DRAM cell.

公开(公告)号：DE10307822B4

公开(公告)日：2005-08-18

申请号：DE10307822

申请日：2003-02-24

Applicant: IBM ,  INFINEON TECHNOLOGIES AG

Inventor： KNORR ANDREAS ,  DIVAKARUNI RAMACHANDRA ,  BEINTNER JOCHEN ,  MANDELMAN JACK

IPC: H01L21/762 ,  H01L21/763 ,  H01L21/8239

Abstract: Disclosed is a method of simultaneously supplying trench isolations for array and support areas of a semiconductor substrate made of a substrate material, the method comprising providing a first hard mask layer for the array and support areas, said first hard mask comprising mask openings defining trench isolations in the array and support areas, providing deep array trench isolations in the array areas, providing a blanketing planarized conductive material layer over both support and array areas sufficient to fill said mask openings and deep array trench isolations, etching said conductive material through said first hard mask material down into said semiconductor substrate so as to form support trench isolations, such that both deep array trench isolations and support trench isolations are of equal depth, and wherein a conductive element, comprising a quantity of said conductive material, remains in the bottom of each of said deep array trenches.

公开(公告)号：DE102004013926A1

公开(公告)日：2004-10-21

申请号：DE102004013926

申请日：2004-03-22

Applicant: INFINEON TECHNOLOGIES AG ,  IBM

Inventor： BERGNER WOLFGANG ,  BEINTNER JOCHEN ,  CONTI RICHARD A ,  KNORR ANDREAS ,  WEIS ROLF

IPC: H01L21/8242 ,  H01L29/94 ,  H01L27/108

Abstract: The invention provides a trench storage structure that includes a substrate having a trench, a capacitor conductor in the lower part of the trench, a conductive node strap in the trench adjacent the capacitor conductor, a trench top oxide above the capacitor conductor, and a conductive buried strap in the substrate adjacent the trench top oxide. The trench top oxide includes a doped trench top oxide layer above the conductive strap, and an undoped trench top oxide layer above the doped trench top oxide layer.

公开(公告)号：DE10352068A1

公开(公告)日：2004-05-27

申请号：DE10352068

申请日：2003-11-07

Applicant: INFINEON TECHNOLOGIES AG ,  IBM

Inventor： BEINTNER JOCHEN ,  CHUDZIK MICHAEL ,  SHEPARD JOSEPH F

IPC: H01L21/308 ,  H01L21/334 ,  H01L21/8242 ,  H01L27/108 ,  H01L29/94 ,  H04J1/16 ,  H04J3/14

Abstract: A semiconductor device is fabricated using a micro-masking structure. The micro-masking structure is formed along the sidewalls of a trench in a semiconductor substrate or along the sidewalls of an electrode disposed over the semiconductor substrate. The micro-masking structure exposes portions of the sidewalls and covers other portions of the sidewalls. Then the exposed portions of the sidewalls are recessed to form a plurality of recesses such that the sidewalls have an increase surface area. After the recessing, the micro-masking structure is removed. The recessed sidewalls provide enhanced capacitance.

公开(公告)号：DE112004000745B4

公开(公告)日：2008-05-29

申请号：DE112004000745

申请日：2004-05-06

Applicant: INFINEON TECHNOLOGIES AG ,  IBM

Inventor： BEINTNER JOCHEN ,  LI YUJUN ,  MOUMEN NAIM ,  WRSCHKA PORSHIA SHANE

IPC: H01L29/423 ,  H01L21/265 ,  H01L21/28 ,  H01L21/336 ,  H01L29/49 ,  H01L29/78 ,  H01L29/786

Abstract: The structure and method of forming a notched gate MOSFET disclosed herein addresses such problems as device reliability. A gate dielectric (e.g. gate oxide) is formed on the surface of an active area on the semiconductor substrate, preferably defined by an isolation trench region. A layer of polysilicon is then deposited on the gate dielectric. This step is followed by depositing a layer of silicon germanium) (SiGe). The sidewalls of the polysilicon layer are then laterally etched, selective to the SiGe layer to create a notched gate conductor structure, with the SiGe layer being broader than the underlying polysilicon layer. Sidewall spacers are preferably formed on sidewalls of the SiGe layer and the polysilicon layer. A silicide layer is preferably formed as a self-aligned silicide from a polysilicon layer deposited over the SiGe layer, to reduce resistance of the gate conductor. One or more other processing steps (e.g. source and drain implants, extension implants, and pocket lightly doped drain (LDD) implants), gate conductor stack doping, and silicidation are preferably performed in completing the transistor.

公开(公告)号：DE10352068B4

公开(公告)日：2006-10-05

申请号：DE10352068

申请日：2003-11-07

Applicant: INFINEON TECHNOLOGIES AG ,  IBM

Inventor： BEINTNER JOCHEN ,  CHUDZIK MICHAEL ,  SHEPARD JOSEPH F

IPC: H01L21/8242 ,  H01L21/308 ,  H01L21/334 ,  H01L27/108 ,  H01L29/94 ,  H04J1/16 ,  H04J3/14

Abstract: A semiconductor device is fabricated using a micro-masking structure. The micro-masking structure is formed along the sidewalls of a trench in a semiconductor substrate or along the sidewalls of an electrode disposed over the semiconductor substrate. The micro-masking structure exposes portions of the sidewalls and covers other portions of the sidewalls. Then the exposed portions of the sidewalls are recessed to form a plurality of recesses such that the sidewalls have an increase surface area. After the recessing, the micro-masking structure is removed. The recessed sidewalls provide enhanced capacitance.