公开(公告)号：US09338871B2

公开(公告)日：2016-05-10

申请号：US12905624

申请日：2010-10-15

Applicant: Chetan Mahadeswaraswamy ,  Walter R. Merry ,  Sergio Fukuda Shoji ,  Chunlei Zhang ,  Yashaswini B. Pattar ,  Duy D. Nguyen ,  Tina Tsong ,  Shane C. Nevil ,  Douglas A. Buchberger, Jr. ,  Fernando M. Silveira ,  Brad L. Mays ,  Kartik Ramaswamy ,  Hamid Noorbakhsh

Inventor： Chetan Mahadeswaraswamy ,  Walter R. Merry ,  Sergio Fukuda Shoji ,  Chunlei Zhang ,  Yashaswini B. Pattar ,  Duy D. Nguyen ,  Tina Tsong ,  Shane C. Nevil ,  Douglas A. Buchberger, Jr. ,  Fernando M. Silveira ,  Brad L. Mays ,  Kartik Ramaswamy ,  Hamid Noorbakhsh

IPC: G01L21/30 ,  G01R31/00 ,  H01L21/302 ,  H01L21/461 ,  H01L21/306 ,  C23F1/00 ,  H05H1/00 ,  H01J37/32

CPC classification number: H01J37/32009 ,  G05B6/02 ,  H01J37/3244 ,  H01J37/32715 ,  H01J37/32935 ,  H01J2237/334 ,  H05H1/0081

Abstract: Methods and systems for controlling temperatures in plasma processing chamber with reduced controller response times and increased stability. Temperature control is based at least in part on a feedforward control signal derived from a plasma power input into the processing chamber. A feedforward control signal compensating disturbances in the temperature attributable to the plasma power may be combined with a feedback control signal counteracting error between a measured and desired temperature.

Abstract translation: 用于控制等离子体处理室中的温度的方法和系统，其具有减少的控制器响应时间和增加的稳定性。 温度控制至少部分地基于从输入到处理室的等离子体功率得到的前馈控制信号。 补偿由于等离子体功率引起的温度的干扰的前馈控制信号可以与测量温度和期望温度之间的反馈控制信号抵消误差相组合。

公开(公告)号：US08608900B2

公开(公告)日：2013-12-17

申请号：US11409183

申请日：2006-04-21

Applicant: Douglas A. Buchberger, Jr. ,  Paul Lukas Brillhart ,  Richard Fovell ,  Hamid Tavassoli ,  Douglas H. Burns ,  Kallol Bera ,  Daniel J. Hoffman

Inventor： Douglas A. Buchberger, Jr. ,  Paul Lukas Brillhart ,  Richard Fovell ,  Hamid Tavassoli ,  Douglas H. Burns ,  Kallol Bera ,  Daniel J. Hoffman

IPC: H01L21/3065 ,  C23C16/52 ,  C23C16/46 ,  C23C16/458 ,  C23C16/503 ,  C23C16/509

CPC classification number: H01L21/67248 ,  F25B49/02 ,  F25B2400/0401 ,  F25B2400/0403 ,  F25B2400/0411 ,  F25B2700/21174 ,  F25B2700/21175 ,  H01J37/32091 ,  H01J37/32183 ,  H01J37/32724 ,  H01J2237/2001 ,  H01L21/67069 ,  H01L21/67109 ,  H01L21/6831 ,  H05H2001/4682

Abstract: A plasma reactor having a reactor chamber and an electrostatic chuck with a surface for holding a workpiece inside the chamber includes a backside gas pressure source coupled to the electrostatic chuck for applying a thermally conductive gas under a selected pressure into a workpiece-surface interface formed whenever a workpiece is held on the surface and an evaporator inside the electrostatic chuck and a refrigeration loop having an expansion valve for controlling flow of coolant through the evaporator. The reactor further includes a temperature sensor in the electrostatic chuck and a memory storing a schedule of changes in RF power or wafer temperature. The reactor further includes a thermal model capable of simulating heat transfer between the evaporator and the surface based upon measurements from the temperature sensor, and a control processor coupled to the thermal model and to the memory and governing the backside gas pressure source in response to a prediction from the model of a change in the selected pressure that would compensate for the next scheduled change in RF power or implement the next scheduled change in wafer temperature.

Abstract translation: 具有反应室和具有用于将工件保持在室内的表面的静电卡盘的等离子体反应器包括耦合到静电卡盘的背侧气体压力源，用于在选定压力下将导热气体施加到每次形成的工件表面界面中 工件被保持在表面上，蒸发器在静电卡盘内部，制冷回路具有用于控制通过蒸发器的冷却剂流动的膨胀阀。 反应器还包括静电卡盘中的温度传感器和存储RF功率或晶片温度变化计划的存储器。 反应器还包括热模型，其能够基于来自温度传感器的测量来模拟蒸发器和表面之间的热传递;以及控制处理器，其耦合到热模型和存储器，并且响应于所述热模型和存储器控制背侧气体压力源 从所选压力的变化的模型中预测将补偿下一次调频的功率变化或实现下一个预定的晶片温度的变化。

公开(公告)号：US08337660B2

公开(公告)日：2012-12-25

申请号：US12855678

申请日：2010-08-12

Applicant: Douglas A. Buchberger, Jr. ,  Paul Lukas Brillhart ,  Richard Fovell ,  Hamid Tavassoli ,  Douglas H. Burns ,  Kallol Bera ,  Daniel J. Hoffman ,  Kenneth W. Cowans ,  William W. Cowans ,  Glenn W. Zubillaga ,  Isaac Millan

Inventor： Douglas A. Buchberger, Jr. ,  Paul Lukas Brillhart ,  Richard Fovell ,  Hamid Tavassoli ,  Douglas H. Burns ,  Kallol Bera ,  Daniel J. Hoffman ,  Kenneth W. Cowans ,  William W. Cowans ,  Glenn W. Zubillaga ,  Isaac Millan

IPC: H01L21/306 ,  C23C16/46 ,  C23C16/52 ,  H01L21/683

CPC classification number: H01L21/67248 ,  H01L21/67069 ,  H01L21/67109 ,  H01L21/6831

Abstract: A plasma reactor for processing a workpiece includes a reactor chamber, an electrostatic chuck within the chamber having a top surface for supporting a workpiece and having indentations in the top surface that form enclosed gas flow channels whenever covered by a workpiece resting on the top surface. The reactor further includes thermal control apparatus thermally coupled to the electrostatic chuck, an RF plasma bias power generator coupled to apply RF power to the electrostatic chuck, a pressurized gas supply of a thermally conductive gas, a controllable gas valve coupling the pressurized gas supply to the indentations to facilitate filling the channels with the thermally conductive gas for heat transfer between a backside of a workpiece and the electrostatic chuck at a heat transfer rate that is a function of the pressure against the backside of the workpiece of the thermally conductive gas. The reactor further includes an agile workpiece temperature control loop including (a) a temperature probe in the electrostatic chuck, and (b) a backside gas pressure controller coupled to an output of the temperature probe and responsive to a specified desired temperature, the controller governing the gas valve in response to a difference between the output of the temperature probe and the desired temperature.

公开(公告)号：US08092639B2

公开(公告)日：2012-01-10

申请号：US12855674

申请日：2010-08-12

Applicant: Douglas A. Buchberger, Jr. ,  Paul Lukas Brillhart ,  Richard Fovell ,  Hamid Tavassoli ,  Douglas H. Burns ,  Kallol Bera ,  Daniel J. Hoffman ,  Kenneth W. Cowans ,  William W. Cowans ,  Glenn W. Zubillaga ,  Isaac Millan

Inventor： Douglas A. Buchberger, Jr. ,  Paul Lukas Brillhart ,  Richard Fovell ,  Hamid Tavassoli ,  Douglas H. Burns ,  Kallol Bera ,  Daniel J. Hoffman ,  Kenneth W. Cowans ,  William W. Cowans ,  Glenn W. Zubillaga ,  Isaac Millan

IPC: H01L21/3065 ,  C23C16/00 ,  C23C16/455 ,  C23C16/458 ,  C23C16/46 ,  C23C16/50

CPC classification number: H01L21/67248 ,  F25B49/02 ,  F25B2400/0401 ,  F25B2400/0403 ,  F25B2400/0411 ,  F25B2700/21174 ,  F25B2700/21175 ,  H01J37/32091 ,  H01J37/32183 ,  H01J37/32724 ,  H01J2237/2001 ,  H01L21/67069 ,  H01L21/67109 ,  H01L21/6831 ,  H05H2001/4682

Abstract: A plasma reactor having a reactor chamber and an electrostatic chuck with a surface for holding a workpiece inside the chamber includes a backside gas pressure source coupled to the electrostatic chuck for applying a thermally conductive gas under a selected pressure into a workpiece-surface interface formed whenever a workpiece is held on the surface and an evaporator inside the electrostatic chuck and a refrigeration loop having an expansion valve for controlling flow of coolant through the evaporator. The reactor further includes a temperature sensor in the electrostatic chuck and a memory storing a schedule of changes in RF power or wafer temperature. The reactor further includes a thermal model capable of simulating heat transfer between the evaporator and the surface based upon measurements from the temperature sensor, and a control processor coupled to the thermal model and to the memory and governing the backside gas pressure source in response to a prediction from the model of a change in the selected pressure that would compensate for the next scheduled change in RF power or implement the next scheduled change in wafer temperature.

Abstract translation: 具有反应室和具有用于将工件保持在室内的表面的静电卡盘的等离子体反应器包括耦合到静电卡盘的背侧气体压力源，用于在选定压力下将导热气体施加到每次形成的工件表面界面中 工件被保持在表面上，蒸发器在静电卡盘内部，制冷回路具有用于控制通过蒸发器的冷却剂流动的膨胀阀。 反应器还包括静电卡盘中的温度传感器和存储RF功率或晶片温度变化计划的存储器。 反应器还包括热模型，其能够基于来自温度传感器的测量来模拟蒸发器和表面之间的热传递;以及控制处理器，其耦合到热模型和存储器，并且响应于所述热模型和存储器控制背侧气体压力源 从所选压力的变化的模型中预测将补偿下一次调频的功率变化或实现下一个预定的晶片温度的变化。

公开(公告)号：US08080479B2

公开(公告)日：2011-12-20

申请号：US11733858

申请日：2007-04-11

Applicant: Kenneth S. Collins ,  Hiroji Hanawa ,  Kartik Ramaswamy ,  Douglas A. Buchberger, Jr. ,  Shahid Rauf ,  Kallol Bera ,  Lawrence Wong ,  Walter R. Merry ,  Matthew L. Miller ,  Steven C. Shannon ,  Andrew Nguyen ,  James P. Cruse ,  James Carducci ,  Troy S. Detrick ,  Subhash Deshmukh ,  Jennifer Y. Sun

Inventor： Kenneth S. Collins ,  Hiroji Hanawa ,  Kartik Ramaswamy ,  Douglas A. Buchberger, Jr. ,  Shahid Rauf ,  Kallol Bera ,  Lawrence Wong ,  Walter R. Merry ,  Matthew L. Miller ,  Steven C. Shannon ,  Andrew Nguyen ,  James P. Cruse ,  James Carducci ,  Troy S. Detrick ,  Subhash Deshmukh ,  Jennifer Y. Sun

IPC: H01L21/302

CPC classification number: C23C16/45574 ,  C23C16/5096 ,  H01J37/32091 ,  H01J37/32165 ,  H01J37/32174 ,  H01L21/67069 ,  H01L21/6831

Abstract: A method of processing a workpiece in a plasma reactor chamber includes coupling RF power via an electrode to plasma in the chamber, the RF power being of a variable frequency in a frequency range that includes a fundamental frequency f. The method also includes coupling the electrode to a resonator having a resonant VHF frequency F which is a harmonic of the fundamental frequency f, so as to produce VHF power at the harmonic. The method controls the ratio of power near the fundamental f to power at harmonic F, by controlling the proportion of power from the generator that is up-converted from f to F, so as to control plasma ion density distribution.

Abstract translation: 在等离子体反应器室中处理工件的方法包括经由电极将RF功率耦合到腔室中的等离子体，RF功率在包括基频f的频率范围内是可变频率的。 该方法还包括将电极耦合到具有作为基频f的谐波的谐振VHF频率F的谐振器，以便在谐波处产生VHF功率。 该方法通过控制从f向F转换为F的发电机的功率比例来控制基波f附近的功率与谐波F功率的比值，以便控制等离子体离子密度分布。

公开(公告)号：US20090272717A1

公开(公告)日：2009-11-05

申请号：US12407548

申请日：2009-03-19

Applicant: Sharma V. Pamarthy ,  Jon C. Farr ,  Khalid Sirajuddin ,  Ezra Robert Gold ,  James P. Cruse ,  Scott Olszewski ,  Roy C. Nangoy ,  Saravjeet Singh ,  Douglas A. Buchberger, JR. ,  Jared Ahmad Lee ,  Chunlei Zhang

Inventor： Sharma V. Pamarthy ,  Jon C. Farr ,  Khalid Sirajuddin ,  Ezra Robert Gold ,  James P. Cruse ,  Scott Olszewski ,  Roy C. Nangoy ,  Saravjeet Singh ,  Douglas A. Buchberger, JR. ,  Jared Ahmad Lee ,  Chunlei Zhang

IPC: C23F1/00

CPC classification number: H01L21/30655 ,  Y10T137/0318 ,  Y10T137/87169

Abstract: Embodiments of the invention relate to a substrate etching system and process. In one embodiment, a method may include depositing material on the substrate during a deposition process, etching a first layer of the substrate during a first etch process, and etching a second layer of the substrate during a second etch process, wherein a first bias power is applied to the substrate during the first process, and wherein a second bias power is applied to the substrate during the second etch process. In another embodiment, a system may include a gas delivery system containing a first gas panel for supplying a first gas to a chamber, a second gas panel for supplying a second gas to the chamber, and a plurality of flow controllers for directing the gases to the chamber to facilitate rapid gas transitioning between the gases to and from the chamber and the panels.

Abstract translation: 本发明的实施例涉及一种基板蚀刻系统和工艺。 在一个实施例中，一种方法可以包括在沉积工艺期间在衬底上沉积材料，在第一蚀刻工艺期间蚀刻衬底的第一层，以及在第二蚀刻工艺期间蚀刻衬底的第二层，其中第一偏置功率 在第一工艺期间施加到衬底，并且其中在第二蚀刻工艺期间将第二偏压功率施加到衬底。 在另一个实施例中，系统可以包括气体输送系统，其包含用于向腔室供应第一气体的第一气体面板，用于向腔室供应第二气体的第二气体面板，以及用于将气体引导到 该室用于促进在进出室和面板之间的气体之间的快速气体转变。

公开(公告)号：US20090097184A1

公开(公告)日：2009-04-16

申请号：US11871807

申请日：2007-10-12

Applicant: DOUGLAS A. BUCHBERGER, JR. ,  Paul Brillhart

Inventor： DOUGLAS A. BUCHBERGER, JR. ,  Paul Brillhart

IPC: H05F3/00

CPC classification number: H01L21/6831 ,  H01L21/67109

Abstract: The present invention generally comprises an electrostatic chuck base, an electrostatic chuck assembly, and a puck for the electrostatic chuck assembly. Precisely etching a substrate within a plasma chamber may be a challenge because the plasma within the chamber may cause the temperature across the substrate to be non-uniform. A temperature gradient may exist across the substrate such that the edge of the substrate is at a different temperature compared to the center of the substrate. When the temperature of the substrate is not uniform, features may not be uniformly etched into the various layers of the structure disposed above the substrate. A dual zone electrostatic chuck assembly may compensate for temperature gradients across a substrate surface.

Abstract translation: 本发明通常包括静电卡盘基座，静电卡盘组件和用于静电卡盘组件的圆盘。 精确蚀刻等离子体室内的衬底可能是一个挑战，因为室内的等离子体可能导致衬底上的温度不均匀。 衬底上可能存在温度梯度，使得衬底的边缘与衬底的中心相比处于不同的温度。 当衬底的温度不均匀时，可能不能将特征均匀地蚀刻到设置在衬底上方的结构的各个层中。 双区域静电吸盘组件可以补偿穿过衬底表面的温度梯度。

公开(公告)号：US06677712B2

公开(公告)日：2004-01-13

申请号：US10442386

申请日：2003-05-20

Applicant: Dan Katz ,  Douglas A. Buchberger, Jr. ,  Yan Ye ,  Robert B. Hagen ,  Xiaoye Zhao ,  Ananda H. Kumar ,  Kang-Lie Chiang ,  Hamid Noorbakhsh ,  Shiang-Bau Wang

Inventor： Dan Katz ,  Douglas A. Buchberger, Jr. ,  Yan Ye ,  Robert B. Hagen ,  Xiaoye Zhao ,  Ananda H. Kumar ,  Kang-Lie Chiang ,  Hamid Noorbakhsh ,  Shiang-Bau Wang

IPC: H01J724

CPC classification number: H01J37/3244

Abstract: The invention is embodied in a plasma reactor for processing a semiconductor wafer, the reactor having a gas distribution plate including a front plate in the chamber and a back plate on an external side of the front plate, the gas distribution plate comprising a gas manifold adjacent the back plate, the back and front plates bonded together and forming an assembly. The assembly includes an array of holes through the front plate and communicating with the chamber, at least one gas flow-controlling orifice through the back plate and communicating between the manifold and at least one of the holes, the orifice having a diameter that determines gas flow rate to the at least one hole. In addition, an array of pucks is at least generally congruent with the array of holes and disposed within respective ones of the holes to define annular gas passages for gas flow through the front plate into the chamber, each of the annular gas passages being non-aligned with the orifice.

Abstract translation: 本发明体现在用于处理半导体晶片的等离子体反应器中，该反应器具有气体分配板，该气体分配板包括在该腔室中的前板和在前板的外侧上的后板，该气体分配板包括邻近的气体歧管 背板，后板和前板结合在一起并形成组件。 组件包括穿过前板并与腔室连通的孔阵列，至少一个通过后板的气体流量控制孔，并在歧管和至少一个孔之间连通，孔口具有确定气体的直径 至少一个孔的流速。 此外，一组圆盘至少大体上与孔阵列一致，并且设置在孔的相应孔内，以限定用于气体流过前板进入腔室的环形气体通道，每个环形气体通道是非限制性的， 与孔对齐。

公开(公告)号：US06365063B2

公开(公告)日：2002-04-02

申请号：US09350234

申请日：1999-07-09

Applicant: Kenneth S Collins ,  Michael Rice ,  Farahmand E Askarinam ,  Douglas A Buchberger, Jr. ,  Craig A Roderick

Inventor： Kenneth S Collins ,  Michael Rice ,  Farahmand E Askarinam ,  Douglas A Buchberger, Jr. ,  Craig A Roderick

IPC: C23F100

CPC classification number: H01J37/32458 ,  C23C16/517 ,  H01F2029/143 ,  H01J37/32082 ,  H01J37/321 ,  H01J37/32146 ,  H01J37/32165 ,  H01J37/32467 ,  H01J37/32522 ,  H01J37/32688 ,  H01J37/32706 ,  H01J37/32871 ,  H01J2237/3343 ,  H01J2237/3345 ,  H01J2237/3346 ,  H01L21/31116 ,  H01L21/6831

Abstract: In a plasma reactor including a reactor chamber, a workpiece support for holding a workpiece inside the chamber during processing and an inductive antenna, a window electrode proximal a wall of the chamber, the antenna and wall being positioned adjacently, the window electrode being operable as (a) a capacitive electrode accepting RF power to capacitively coupled plasma source power into the chamber, and (b) a window electrode passing Rf power therethrough from said antenna into the chamber to inductively couple plasma source power into the chamber.

Abstract translation: 在包括反应器室的等离子体反应器中，用于在处理期间将工件保持在室内的工件支撑件和感应天线，靠近室壁的窗口电极，天线和壁相邻地定位，窗口电极可操作为 （a）容纳RF功率的电容电极，用于将等离子体源功率电容耦合到腔室中，以及（b）将来自所述天线的Rf功率从所述天线传递到腔室中以将等离子体源功率感应耦合到腔室中的窗口电极。

公开(公告)号：US09267742B2

公开(公告)日：2016-02-23

申请号：US12886255

申请日：2010-09-20

Applicant: Kallol Bera ,  Xiaoping Zhou ,  Douglas A. Buchberger, Jr. ,  Andrew Nguyen ,  Hamid Tavassoli ,  Surajit Kumar ,  Shahid Rauf

Inventor： Kallol Bera ,  Xiaoping Zhou ,  Douglas A. Buchberger, Jr. ,  Andrew Nguyen ,  Hamid Tavassoli ,  Surajit Kumar ,  Shahid Rauf

IPC: F25B29/00 ,  F28F3/12 ,  F28F13/00

CPC classification number: F28F3/12 ,  F28F2013/001

Abstract: Apparatus for controlling the thermal uniformity of a substrate. In some embodiments, the thermal uniformity of the substrate is controlled to be more uniform. In some embodiments, the thermal uniformity of the substrate is controlled to be non-uniform in a desired pattern. In some embodiments, an apparatus for controlling thermal uniformity of a substrate includes a substrate support having a support surface to support a substrate thereon. A plurality of flow paths having a substantially equivalent fluid conductance are disposed within the substrate support to flow a heat transfer fluid beneath the support surface.

Abstract translation: 用于控制基板的热均匀性的装置。 在一些实施例中，将基板的热均匀性控制得更均匀。 在一些实施例中，基板的热均匀性被控制为以期望的图案不均匀。 在一些实施例中，用于控制衬底的热均匀性的装置包括具有用于在其上支撑衬底的支撑表面的衬底支撑件。 具有基本相当的流体电导的多个流动路径设置在基板支撑件内，以使传热流体在支撑表面下方流动。