WO2001050504A2 - An improved method for buried anti-reflective coating removal - Google Patents
An improved method for buried anti-reflective coating removal Download PDFInfo
- Publication number
- WO2001050504A2 WO2001050504A2 PCT/US2000/035130 US0035130W WO0150504A2 WO 2001050504 A2 WO2001050504 A2 WO 2001050504A2 US 0035130 W US0035130 W US 0035130W WO 0150504 A2 WO0150504 A2 WO 0150504A2
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- gate region
- reflective coating
- spacers
- layer
- gate
- Prior art date
Links
- 238000000034 method Methods 0.000 title claims abstract description 72
- 239000006117 anti-reflective coating Substances 0.000 title claims abstract description 57
- 239000010410 layer Substances 0.000 claims abstract description 49
- 125000006850 spacer group Chemical group 0.000 claims abstract description 43
- 239000004065 semiconductor Substances 0.000 claims abstract description 27
- 238000005530 etching Methods 0.000 claims abstract description 25
- 239000000758 substrate Substances 0.000 claims abstract description 22
- 238000004519 manufacturing process Methods 0.000 claims abstract description 11
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 21
- 229910021417 amorphous silicon Inorganic materials 0.000 claims description 15
- 239000000377 silicon dioxide Substances 0.000 claims description 11
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 claims description 8
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims description 8
- 229910052710 silicon Inorganic materials 0.000 claims description 8
- 239000010703 silicon Substances 0.000 claims description 8
- 235000012239 silicon dioxide Nutrition 0.000 claims description 8
- XPDWGBQVDMORPB-UHFFFAOYSA-N Fluoroform Chemical compound FC(F)F XPDWGBQVDMORPB-UHFFFAOYSA-N 0.000 claims description 6
- 229910021332 silicide Inorganic materials 0.000 claims description 5
- 229910052786 argon Inorganic materials 0.000 claims description 4
- 239000001307 helium Substances 0.000 claims description 4
- 229910052734 helium Inorganic materials 0.000 claims description 4
- SWQJXJOGLNCZEY-UHFFFAOYSA-N helium atom Chemical compound [He] SWQJXJOGLNCZEY-UHFFFAOYSA-N 0.000 claims description 4
- 239000011261 inert gas Substances 0.000 claims description 4
- FVBUAEGBCNSCDD-UHFFFAOYSA-N silicide(4-) Chemical compound [Si-4] FVBUAEGBCNSCDD-UHFFFAOYSA-N 0.000 claims description 4
- 239000000654 additive Substances 0.000 claims description 3
- 230000000996 additive effect Effects 0.000 claims description 3
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 3
- 239000001301 oxygen Substances 0.000 claims description 3
- 229910052760 oxygen Inorganic materials 0.000 claims description 3
- 230000015572 biosynthetic process Effects 0.000 description 11
- 206010010144 Completed suicide Diseases 0.000 description 6
- 239000000463 material Substances 0.000 description 6
- 238000000576 coating method Methods 0.000 description 4
- 230000008021 deposition Effects 0.000 description 4
- 238000002955 isolation Methods 0.000 description 4
- 238000012986 modification Methods 0.000 description 4
- 230000004048 modification Effects 0.000 description 4
- 229920002120 photoresistant polymer Polymers 0.000 description 4
- 229910021420 polycrystalline silicon Inorganic materials 0.000 description 4
- 229920005591 polysilicon Polymers 0.000 description 4
- 230000003667 anti-reflective effect Effects 0.000 description 3
- 239000011248 coating agent Substances 0.000 description 3
- 238000000059 patterning Methods 0.000 description 3
- 210000004027 cell Anatomy 0.000 description 2
- 239000011247 coating layer Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000006870 function Effects 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 238000012876 topography Methods 0.000 description 2
- 206010001513 AIDS related complex Diseases 0.000 description 1
- 210000002945 adventitial reticular cell Anatomy 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 239000000872 buffer Substances 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000000206 photolithography Methods 0.000 description 1
- 230000010076 replication Effects 0.000 description 1
- 230000003746 surface roughness Effects 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L29/00—Semiconductor devices adapted for rectifying, amplifying, oscillating or switching, or capacitors or resistors with at least one potential-jump barrier or surface barrier, e.g. PN junction depletion layer or carrier concentration layer; Details of semiconductor bodies or of electrodes thereof ; Multistep manufacturing processes therefor
- H01L29/66—Types of semiconductor device ; Multistep manufacturing processes therefor
- H01L29/66007—Multistep manufacturing processes
- H01L29/66075—Multistep manufacturing processes of devices having semiconductor bodies comprising group 14 or group 13/15 materials
- H01L29/66227—Multistep manufacturing processes of devices having semiconductor bodies comprising group 14 or group 13/15 materials the devices being controllable only by the electric current supplied or the electric potential applied, to an electrode which does not carry the current to be rectified, amplified or switched, e.g. three-terminal devices
- H01L29/66409—Unipolar field-effect transistors
- H01L29/66477—Unipolar field-effect transistors with an insulated gate, i.e. MISFET
- H01L29/665—Unipolar field-effect transistors with an insulated gate, i.e. MISFET using self aligned silicidation, i.e. salicide
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L21/00—Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof
- H01L21/02—Manufacture or treatment of semiconductor devices or of parts thereof
- H01L21/04—Manufacture or treatment of semiconductor devices or of parts thereof the devices having at least one potential-jump barrier or surface barrier, e.g. PN junction, depletion layer or carrier concentration layer
- H01L21/18—Manufacture or treatment of semiconductor devices or of parts thereof the devices having at least one potential-jump barrier or surface barrier, e.g. PN junction, depletion layer or carrier concentration layer the devices having semiconductor bodies comprising elements of Group IV of the Periodic System or AIIIBV compounds with or without impurities, e.g. doping materials
- H01L21/28—Manufacture of electrodes on semiconductor bodies using processes or apparatus not provided for in groups H01L21/20 - H01L21/268
- H01L21/28008—Making conductor-insulator-semiconductor electrodes
- H01L21/28017—Making conductor-insulator-semiconductor electrodes the insulator being formed after the semiconductor body, the semiconductor being silicon
- H01L21/28026—Making conductor-insulator-semiconductor electrodes the insulator being formed after the semiconductor body, the semiconductor being silicon characterised by the conductor
- H01L21/28035—Making conductor-insulator-semiconductor electrodes the insulator being formed after the semiconductor body, the semiconductor being silicon characterised by the conductor the final conductor layer next to the insulator being silicon, e.g. polysilicon, with or without impurities
- H01L21/28044—Making conductor-insulator-semiconductor electrodes the insulator being formed after the semiconductor body, the semiconductor being silicon characterised by the conductor the final conductor layer next to the insulator being silicon, e.g. polysilicon, with or without impurities the conductor comprising at least another non-silicon conductive layer
- H01L21/28052—Making conductor-insulator-semiconductor electrodes the insulator being formed after the semiconductor body, the semiconductor being silicon characterised by the conductor the final conductor layer next to the insulator being silicon, e.g. polysilicon, with or without impurities the conductor comprising at least another non-silicon conductive layer the conductor comprising a silicide layer formed by the silicidation reaction of silicon with a metal layer
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L21/00—Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof
- H01L21/02—Manufacture or treatment of semiconductor devices or of parts thereof
- H01L21/04—Manufacture or treatment of semiconductor devices or of parts thereof the devices having at least one potential-jump barrier or surface barrier, e.g. PN junction, depletion layer or carrier concentration layer
- H01L21/18—Manufacture or treatment of semiconductor devices or of parts thereof the devices having at least one potential-jump barrier or surface barrier, e.g. PN junction, depletion layer or carrier concentration layer the devices having semiconductor bodies comprising elements of Group IV of the Periodic System or AIIIBV compounds with or without impurities, e.g. doping materials
- H01L21/30—Treatment of semiconductor bodies using processes or apparatus not provided for in groups H01L21/20 - H01L21/26
- H01L21/31—Treatment of semiconductor bodies using processes or apparatus not provided for in groups H01L21/20 - H01L21/26 to form insulating layers thereon, e.g. for masking or by using photolithographic techniques; After treatment of these layers; Selection of materials for these layers
- H01L21/3105—After-treatment
- H01L21/311—Etching the insulating layers by chemical or physical means
- H01L21/31105—Etching inorganic layers
- H01L21/31111—Etching inorganic layers by chemical means
- H01L21/31116—Etching inorganic layers by chemical means by dry-etching
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L29/00—Semiconductor devices adapted for rectifying, amplifying, oscillating or switching, or capacitors or resistors with at least one potential-jump barrier or surface barrier, e.g. PN junction depletion layer or carrier concentration layer; Details of semiconductor bodies or of electrodes thereof ; Multistep manufacturing processes therefor
- H01L29/66—Types of semiconductor device ; Multistep manufacturing processes therefor
- H01L29/66007—Multistep manufacturing processes
- H01L29/66075—Multistep manufacturing processes of devices having semiconductor bodies comprising group 14 or group 13/15 materials
- H01L29/66227—Multistep manufacturing processes of devices having semiconductor bodies comprising group 14 or group 13/15 materials the devices being controllable only by the electric current supplied or the electric potential applied, to an electrode which does not carry the current to be rectified, amplified or switched, e.g. three-terminal devices
- H01L29/66409—Unipolar field-effect transistors
- H01L29/66477—Unipolar field-effect transistors with an insulated gate, i.e. MISFET
- H01L29/66545—Unipolar field-effect transistors with an insulated gate, i.e. MISFET using a dummy, i.e. replacement gate in a process wherein at least a part of the final gate is self aligned to the dummy gate
Definitions
- the present invention is generally directed to semiconductor structures using anti-reflective coatings to aid in the photolithography process as well as semiconductor structures utilizing spacers adjacent the gate regions for forming source and drain regions.
- NVM nonvolatile memory
- DRAM dynamic random access memory
- peripheral circuits on these devices are typically composed of logic circuits for addressing the memory cells, while other peripheral circuits function as read/write buffers and sense amplifiers.
- Amorphous silicon deposition eliminates the replication of underlying isolation topography in the polysilicon surface.
- amorphous silicon deposition has problems with deposition defects and is also more difficult to fully dope.
- Another technique for improving linewidth control involves the use of anti- reflective layers as part of the photolithographic process.
- the use of anti-reflective layers reduces the effects of both the surface roughness caused by the grain structure of polysilicon and the resist thickness variation due to the underlying effects caused by the rough surface and the topographical features of the polysilicon layer.
- the addition of an anti-reflective layer also helps to planarize the isolation topography and reduce the variation of the photoresist thickness over the substrate.
- the benefits of using anti- reflective coatings (ARC) can be lost if the coatings can not be totally and easily removed prior to suicide formation (contact formation), since the use of ARCs already require special processing equipment and can add additional steps a manufacturing process.
- BARC buried anti-reflective coating
- Oxide spacers may also be included as part of the device's structure, the formation of which tend to complicate the BARC removal process. Removal of the BARC film during spacer etching has led to narrow spacer profiles and excessive isolation oxide loss. Overetching of the oxide spacer layer has been attempted to solve the problem of incomplete BARC removal, but this has led to degradation of the device's structure and performance.
- a two step etching process is used to remove substantially all of an anti-reflective coating from a gate region while minimizing the dielectric spacer loss along side the gate. Minimizing spacer oxide loss along side the gate, in turn, provides protection to the gate edge during the silicidation which prevents notching at the top of the gate.
- An example embodiment of the present invention is directed to a method for manufacturing a semiconductor structure, having a substrate and a gate region thereon, which includes removing an anti-reflective coating (ARC) layer over the gate region to improve silicidation of the gate.
- An anti-reflective coating is first formed over the gate region.
- a dielectric layer is formed over the anti-reflective coating layer, the gate region and the substrate.
- Dielectric spacers are then formed on the substrate, adjacent the gate region and the anti-reflective coating layer, by etching the dielectric layer using a first process that includes selectively removing portions of the dielectric layer on the anti- reflective coating. Utilizing a second, different etching process, the anti-reflective coating over the gate region is selectively removed while preserving the spacers adjacent the gate region.
- Another example embodiment of the present invention is directed to a method for manufacturing a semiconductor structure, having a substrate and a gate region thereon, which includes the removal of an anti-reflective coating (ARC) layer over the gate region to improve silicidation of the gate.
- the method includes providing an buried anti-reflective coating over the gate region and providing an oxide layer over the buried anti-reflective coating layer, the gate region and the substrate.
- Oxide spacers are formed on the substrate, adjacent the gate region and the anti-reflective coating layer, by using a first process to substantially simultaneously etch the oxide layer to form the spacers and to remove the oxide on the anti-reflective coating.
- an endpoint is utilized to terminate the first process once the oxide over the anti-reflective coating is removed.
- a second, different etching process is then used that selectively removes the anti- reflective coating over the gate region while preserving the oxide spacers adjacent the gate region; the spacers and gate region therein forming an aperture for receiving a suicide.
- Another example embodiment of the present invention is directed to a method for manufacturing a semiconductor structure, having a substrate and a gate region thereon, that includes removing an anti-reflective coating (ARC) layer over the gate region to improve silicidation of the gate.
- the method includes providing a silicon oxynitride coating over an amorphous silicon gate region and providing a silicon dioxide layer over the silicon oxynitride coating layer, the gate region and the substrate.
- Oxide spacers are then formed on the substrate, adjacent the gate region and the silicon oxynitride coating layer, by using a first process to substantially simultaneously etch the silicon dioxide layer and to remove the silicon dioxide that is disposed on the silicon oxynitride coating.
- An endpoint is utilized to terminate the first process once the silicon dioxide is removed and a second, different etching process, is utilized thereafter that selectively removes the silicon oxynitride coating over the gate region while preserving the silicon dioxide spacers adjacent the gate region.
- FIGS. 1A illustrates the first step of an example embodiment for making a semiconductor structure wherein the oxide layer is etched to form oxide spacers.
- FIGS. IB illustrates the example embodiment semiconductor structure after the first etching step according to the teachings of the present invention.
- FIGS. 1C illustrates another step of an example embodiment for making a semiconductor structure wherein the ARC is etched from the gate region.
- FIGS. ID illustrates the example embodiment for making a semiconductor structure after another etching step according to the teachings of the present invention.
- the present invention is believed to be applicable to a variety of MOS devices and semiconductor structures that utilize spacers as part of their structure or in their manufacturing process.
- the teachings of the present invention are believed to be applicable in the area of anti-reflective coating removal procedures prior to salicidation of a semiconductor device.
- a two step etching process is used to substantially remove all of an anti-reflective coating from a gate region while minimizing the dielectric spacer loss along side the gate. Minimizing spacer oxide loss along side the gate, in turn, provides protection to the gate edge during the silicidation which prevents notching at the top of the gate. While the present invention is not necessarily so limited, an appreciation of various aspects of the invention is best gained through a discussion of various example semiconductor structures described below.
- a method for manufacturing a semiconductor structure having a substrate and a gate region thereon involves the removal of an anti-reflective coating (ARC) layer over the gate region to improve silicidation of the gate.
- the method includes providing an anti-reflective coating over the gate region and providing a dielectric layer over the anti-reflective coating layer, the gate region and the substrate.
- Dielectric spacers are then formed on the substrate, adjacent the gate region and the anti-reflective coating layer, by etching the dielectric layer using a first process that includes selectively removing portions of the dielectric layer on the anti-reflective coating. Utilizing a second, different etching process, the anti-reflective coating over the gate region is selectively removed while preserving the spacers adjacent the gate region.
- Figure 1A shows a semiconductor structure having a substrate 10 with a gate region 12 disposed thereon.
- the gate region is made of amorphous silicon (ASi), but could be made of other compatible semiconductor materials used in the formation of gate regions.
- BARC buried anti-reflective coating
- a dielectric layer 16 is then disposed on the entire structure, which can be an oxide type material such as silicon dioxide (SiO 2 ).
- the semiconductor structure is then subjected to a first etching process step, as shown by arrows 18, wherein portions of dielectric layer 16 are primarily etched off.
- the first process step of a dielectric (oxide) spacer etch process will remove the BARC over the amorphous silicon and should utilize a common oxide etch chemistry such as CF4 or a mix of CHF 3 /CF 4 and possibly an inert gas such as argon or helium. This step should remove all of the oxide being selective to silicon and may involve using an endpoint to terminate the etch process step once the oxide is removed.
- Figure IB illustrates the semiconductor structure after the first etching process; this figure also illustrates formation of oxide spacers 16A and 16B adjacent gate region 12 and that bound BARC layer 14.
- the semiconductor structure is then subjected to the second etching process, as illustrated by arrows 20, that utilizes either a CF 4 or CHF 3 with an oxygen additive to provide selectivity to the oxide material relative to the SiON (BARC) layer 14.
- the etching process can be performed in either a 4520 or 4520XL using similar chamber configurations and chemistry. This method will maintain the dielectric spacer profile (16A, 16B) and minimize isolation oxide loss while ensuring complete BARC removal.
- Figure ID illustrates the semiconductor structure resulting from the second etching process and illustrates that oxide spacers 16A and 16B have remained substantially intact adjacent gate region 12.
- Spacers 16A and 16B, along with gate region 12 now form an aperture 22 for receiving suicide during the silicidation (contact formation) process.
- oxide loss is minimized in the two-step spacer etch process where the first step is a traditional oxide etch and the second step is highly selective to oxide while etching the BARC over the ASi gates. Complete BARC removal is imperative for good suicide formation on the amorphous silicon gate region. Without selectivity to the oxide material in the BARC removal process (second etch process) spacers 16A andl ⁇ B widths become too small and the result is gate to source/drain leakage. In addition, notching may occur along side the amorphous silicon gate where spacer etching is excessive and has exposed this edge.
- Leaving oxide on the gate top edge assures uniform suicide formation on top of the gate.
- the present invention is applicable to a number of different semiconductor structures and processes. Accordingly, the present invention should not be considered limited to the particular examples described above, but rather should be understood to cover all aspects of the invention as fairly set out in the attached claims. Various modifications, equivalent structures, as well as numerous structures to which the present invention may be applicable will be readily apparent to those of skill in the art upon review of the present specification. The claims are intended to cover such modifications and devices.
Abstract
Description
Claims
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2001550784A JP2003519910A (en) | 1999-12-30 | 2000-12-22 | An improved method for removing buried anti-reflective coatings |
EP00986719A EP1188179A2 (en) | 1999-12-30 | 2000-12-22 | An improved method for buried anti-reflective coating removal |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US47533399A | 1999-12-30 | 1999-12-30 | |
US09/475,333 | 1999-12-30 |
Publications (2)
Publication Number | Publication Date |
---|---|
WO2001050504A2 true WO2001050504A2 (en) | 2001-07-12 |
WO2001050504A3 WO2001050504A3 (en) | 2002-01-03 |
Family
ID=23887116
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/US2000/035130 WO2001050504A2 (en) | 1999-12-30 | 2000-12-22 | An improved method for buried anti-reflective coating removal |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP1188179A2 (en) |
JP (1) | JP2003519910A (en) |
WO (1) | WO2001050504A2 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2003081660A1 (en) * | 2002-03-19 | 2003-10-02 | Freescale Semiconductor, Inc. | Integrated circuit device and method therefor |
Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1997048127A1 (en) * | 1996-06-13 | 1997-12-18 | France Telecom | METHOD FOR ENGRAVING THE GATE IN MOS TECHNOLOGY USING A SiON BASED HARD MASK |
US5731239A (en) * | 1997-01-22 | 1998-03-24 | Chartered Semiconductor Manufacturing Pte Ltd. | Method of making self-aligned silicide narrow gate electrodes for field effect transistors having low sheet resistance |
US5880006A (en) * | 1998-05-22 | 1999-03-09 | Vlsi Technology, Inc. | Method for fabrication of a semiconductor device |
US5902125A (en) * | 1997-12-29 | 1999-05-11 | Texas Instruments--Acer Incorporated | Method to form stacked-Si gate pMOSFETs with elevated and extended S/D junction |
US6013569A (en) * | 1997-07-07 | 2000-01-11 | United Microelectronics Corp. | One step salicide process without bridging |
US6069044A (en) * | 1998-03-30 | 2000-05-30 | Texas Instruments-Acer Incorporated | Process to fabricate ultra-short channel nMOSFETS with self-aligned silicide contact |
US6194297B1 (en) * | 1999-01-19 | 2001-02-27 | United Microeletronics Corp. | Method for forming salicide layers |
US6211048B1 (en) * | 1998-12-21 | 2001-04-03 | United Microelectronics Corp. | Method of reducing salicide lateral growth |
-
2000
- 2000-12-22 WO PCT/US2000/035130 patent/WO2001050504A2/en not_active Application Discontinuation
- 2000-12-22 JP JP2001550784A patent/JP2003519910A/en active Pending
- 2000-12-22 EP EP00986719A patent/EP1188179A2/en not_active Withdrawn
Patent Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1997048127A1 (en) * | 1996-06-13 | 1997-12-18 | France Telecom | METHOD FOR ENGRAVING THE GATE IN MOS TECHNOLOGY USING A SiON BASED HARD MASK |
US5731239A (en) * | 1997-01-22 | 1998-03-24 | Chartered Semiconductor Manufacturing Pte Ltd. | Method of making self-aligned silicide narrow gate electrodes for field effect transistors having low sheet resistance |
US6013569A (en) * | 1997-07-07 | 2000-01-11 | United Microelectronics Corp. | One step salicide process without bridging |
US5902125A (en) * | 1997-12-29 | 1999-05-11 | Texas Instruments--Acer Incorporated | Method to form stacked-Si gate pMOSFETs with elevated and extended S/D junction |
US6069044A (en) * | 1998-03-30 | 2000-05-30 | Texas Instruments-Acer Incorporated | Process to fabricate ultra-short channel nMOSFETS with self-aligned silicide contact |
US5880006A (en) * | 1998-05-22 | 1999-03-09 | Vlsi Technology, Inc. | Method for fabrication of a semiconductor device |
US6211048B1 (en) * | 1998-12-21 | 2001-04-03 | United Microelectronics Corp. | Method of reducing salicide lateral growth |
US6194297B1 (en) * | 1999-01-19 | 2001-02-27 | United Microeletronics Corp. | Method for forming salicide layers |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2003081660A1 (en) * | 2002-03-19 | 2003-10-02 | Freescale Semiconductor, Inc. | Integrated circuit device and method therefor |
US6753242B2 (en) | 2002-03-19 | 2004-06-22 | Motorola, Inc. | Integrated circuit device and method therefor |
US6846716B2 (en) | 2002-03-19 | 2005-01-25 | Freescale Semiconductor, Inc. | Integrated circuit device and method therefor |
Also Published As
Publication number | Publication date |
---|---|
JP2003519910A (en) | 2003-06-24 |
EP1188179A2 (en) | 2002-03-20 |
WO2001050504A3 (en) | 2002-01-03 |
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