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1. 发明授权

US08069430B2 Stress-managed revision of integrated circuit layouts 有权
标题翻译：集成电路布局的压力管理修订
公开(公告)号：US08069430B2
公开(公告)日：2011-11-29
申请号：US12546959
申请日：2009-08-25
申请人： Victor Moroz , Xi-Wei Lin , Dipankar Pramanik
发明人： Victor Moroz , Xi-Wei Lin , Dipankar Pramanik
IPC分类号： G06F17/50
CPC分类号： G06F17/5068 , H01L21/823807
摘要： Roughly described, methods and systems for improving integrated circuit layouts and fabrication processes in order to better account for stress effects. Dummy features can be added to a layout either in order to improve uniformity, or to relax known undesirable stress, or to introduce known desirable stress. The dummy features can include dummy diffusion regions added to relax stress, and dummy trenches added either to relax or enhance stress. A trench can relax stress by filling it with a stress-neutral material or a tensile strained material. A trench can increase stress by filling it with a compressive strained material. Preferably dummy diffusion regions and stress relaxation trenches are disposed longitudinally to at least the channel regions of N-channel transistors, and transversely to at least the channel regions of both N-channel and P-channel transistors. Preferably stress enhancement trenches are disposed longitudinally to at least the channel regions of P-channel transistors.
摘要翻译：大致描述了改进集成电路布局和制造工艺的方法和系统，以便更好地解决应力影响。为了改善均匀性或放松已知的不良应力或引入已知的所需应力，可将虚拟特征添加到布局中。虚拟特征可以包括添加以放松应力的虚拟扩散区域，并且添加虚拟沟槽以放松或增强应力。沟槽可以通过用应力中性材料或拉伸应变材料填充来缓解应力。沟槽可以通过用压缩应变材料填充来增加应力。优选地，虚拟扩散区域和应力松弛沟槽纵向设置在N沟道晶体管的至少沟道区域上，并横向于N沟道和P沟道晶体管的至少沟道区域。优选地，应力增强沟槽纵向设置在至少P沟道晶体管的沟道区域上。

2. 发明授权

US07897479B2 Managing integrated circuit stress using dummy diffusion regions 有权
标题翻译：使用虚拟扩散区管理集成电路应力
公开(公告)号：US07897479B2
公开(公告)日：2011-03-01
申请号：US12207349
申请日：2008-09-09
申请人： Xi-Wei Lin , Dipankar Pramanik , Victor Moroz
发明人： Xi-Wei Lin , Dipankar Pramanik , Victor Moroz
IPC分类号： H01L21/76 , H01L29/00
CPC分类号： H01L21/823878 , H01L21/823807 , H01L21/823814 , H01L29/7846
摘要： Roughly described, methods and systems for improving integrated circuit layouts and fabrication processes in order to better account for stress effects. Dummy features can be added to a layout either in order to improve uniformity, or to relax known undesirable stress, or to introduce known desirable stress. The dummy features can include dummy diffusion regions added to relax stress, and dummy trenches added either to relax or enhance stress. A trench can relax stress by filling it with a stress-neutral material or a tensile strained material. A trench can increase stress by filling it with a compressive strained material. Preferably dummy diffusion regions and stress relaxation trenches are disposed longitudinally to at least the channel regions of N-channel transistors, and transversely to at least the channel regions of both N-channel and P-channel transistors. Preferably stress enhancement trenches are disposed longitudinally to at least the channel regions of P-channel transistors.
摘要翻译：大致描述了改进集成电路布局和制造工艺的方法和系统，以便更好地解决应力影响。为了改善均匀性或放松已知的不良应力或引入已知的所需应力，可将虚拟特征添加到布局中。虚拟特征可以包括添加以放松应力的虚拟扩散区域，并且添加虚拟沟槽以放松或增强应力。沟槽可以通过用应力中性材料或拉伸应变材料填充来缓解应力。沟槽可以通过用压缩应变材料填充来增加应力。优选地，虚拟扩散区域和应力松弛沟槽纵向设置在至少N沟道晶体管的沟道区域上，并横向于N沟道和P沟道晶体管的至少沟道区域。优选地，应力增强沟槽纵向设置在至少P沟道晶体管的沟道区域上。

3. 发明授权

US07895548B2 Filler cells for design optimization in a place-and-route system 有权
标题翻译：填充单元用于在路线和路径系统中进行设计优化
公开(公告)号：US07895548B2
公开(公告)日：2011-02-22
申请号：US11924738
申请日：2007-10-26
申请人： Xi Wei Lin , Jyh-Chwen Frank Lee , Dipankar Pramanik
发明人： Xi Wei Lin , Jyh-Chwen Frank Lee , Dipankar Pramanik
IPC分类号： G06F17/50
CPC分类号： G06F17/50 , G06F17/5068 , H01L27/0207
摘要： A system and method are provided for laying out an integrated circuit design into a plurality of circuit layout cells having gaps therebetween, and inserting into each given one of at least a subset of the gaps, a corresponding filler cell selected from a predefined database in dependence upon a desired effect on a performance parameter of at least one circuit cell adjacent to the given gap. The circuit layout cells may be arranged in rows, and in some embodiments the selection of an appropriate filler cell for a given gap depends upon effects desired on a performance parameter of both circuit cells adjacent to the given gap. The predefined filler cells can include, for example, dummy diffusion regions, dummy poly lines, N-well boundary shifts and etch stop layer boundary shifts. In an embodiment, circuit layout cells can be moved in order to accommodate a selected filler cell.
摘要翻译：提供了一种系统和方法，用于将集成电路设计布置成具有间隙的多个电路布局单元，并且将至少一个子空间中的每个给定的一个插入到依赖于预定数据库的相应填充单元对所述给定间隙相邻的至少一个电路单元的性能参数产生期望的影响。电路布局单元可以排成行，并且在一些实施例中，用于给定间隙的适当填充单元的选择取决于与给定间隙相邻的两个电路单元的性能参数所期望的效果。预定义的填充单元可以包括例如虚拟扩散区域，虚拟多线，N阱边界位移和蚀刻停止层边界移位。在一个实施例中，可以移动电路布局单元以便容纳选定的填充单元。

4. 发明授权

US07739095B2 Method for determining best and worst cases for interconnects in timing analysis 有权
标题翻译：在时序分析中确定互连的最佳和最差情况的方法
公开(公告)号：US07739095B2
公开(公告)日：2010-06-15
申请号：US11685250
申请日：2007-03-13
申请人： Xi-Wei Lin , Dipankar Pramanik
发明人： Xi-Wei Lin , Dipankar Pramanik
IPC分类号： G06F17/50
CPC分类号： G06F17/5031 , G06F2217/84
摘要： Roughly described, signal propagation delay values are estimated for a plurality of interconnects in a circuit design. For each interconnect, the propagation delay value(s) are estimated in dependence upon a preliminary approximate determination of whether the signal propagation delay is dominated more by an interconnect capacitance term or by an interconnect capacitance and resistance product term. If it is dominated more by the interconnect capacitance term, then the parameter values used for a minimum propagation delay calculation are obtained assuming a smallest capacitance process variation case and the parameter values used for a maximum propagation delay calculation are obtained assuming a largest capacitance process variation case. If the signal propagation delay is dominated more by the interconnect capacitance and resistance product term, then the opposite assumptions are made. Preferably the approximate determination is made by comparing Rint to k*Rd.
摘要翻译：粗略描述，在电路设计中为多个互连估计信号传播延迟值。对于每个互连，传播延迟值根据初步近似确定信号传播延迟是否由互连电容项或互连电容和电阻乘积项更多地支配来估计。如果更多地被互连电容项支配，则假定最小传播延迟计算使用的参数值是假定最小电容处理变化情况，并且假定最大电容处理变化获得用于最大传播延迟计算的参数值案件。如果信号传播延迟更多地被互连电容和电阻乘积项所主导，则进行相反的假设。优选地，通过将Rint与k * Rd进行比较来进行近似确定。

5. 发明申请

US20100019317A1 Managing Integrated Circuit Stress Using Stress Adjustment Trenches 审中-公开
标题翻译：使用应力调整沟槽管理集成电路应力
公开(公告)号：US20100019317A1
公开(公告)日：2010-01-28
申请号：US12573308
申请日：2009-10-05
申请人： Victor Moroz , Dipankar Pramanik , Xi-Wei Lin
发明人： Victor Moroz , Dipankar Pramanik , Xi-Wei Lin
IPC分类号： H01L29/78 , H01L29/06
CPC分类号： H01L21/823807 , H01L21/823814 , H01L21/823878 , H01L29/7846 , H01L29/7848
摘要： Roughly described, methods and systems for improving integrated circuit layouts and fabrication processes in order to better account for stress effects. Dummy features can be added to a layout either in order to improve uniformity, or to relax known undesirable stress, or to introduce known desirable stress. The dummy features can include dummy diffusion regions added to relax stress, and dummy trenches added either to relax or enhance stress. A trench can relax stress by filling it with a stress-neutral material or a tensile strained material. A trench can increase stress by filling it with a compressive strained material. Preferably dummy diffusion regions and stress relaxation trenches are disposed longitudinally to at least the channel regions of N-channel transistors, and transversely to at least the channel regions of both N-channel and P-channel transistors. Preferably stress enhancement trenches are disposed longitudinally to at least the channel regions of P-channel transistors.
摘要翻译：大致描述了改进集成电路布局和制造工艺的方法和系统，以便更好地解决应力影响。为了改善均匀性或放松已知的不良应力或引入已知的所需应力，可将虚拟特征添加到布局中。虚拟特征可以包括添加以放松应力的虚拟扩散区域，并且添加虚拟沟槽以放松或增强应力。沟槽可以通过用应力中性材料或拉伸应变材料填充来缓解应力。沟槽可以通过用压缩应变材料填充来增加应力。优选地，虚拟扩散区域和应力松弛沟槽纵向设置在N沟道晶体管的至少沟道区域上，并横向于N沟道和P沟道晶体管的至少沟道区域。优选地，应力增强沟槽纵向设置在至少P沟道晶体管的沟道区域上。

6. 发明申请

US20090113368A1 FILLER CELLS FOR DESIGN OPTIMIZATION IN A PLACE-AND-ROUTE SYSTEM 有权
标题翻译：用于设计优化的填充电池在路线和路线系统中
公开(公告)号：US20090113368A1
公开(公告)日：2009-04-30
申请号：US11924738
申请日：2007-10-26
申请人： Xi-Wei Lin , Jyh-Chwen Frank Lee , Dipankar Pramanik
发明人： Xi-Wei Lin , Jyh-Chwen Frank Lee , Dipankar Pramanik
IPC分类号： G06F17/50
CPC分类号： G06F17/50 , G06F17/5068 , H01L27/0207
摘要： A system and method are provided for laying out an integrated circuit design into a plurality of circuit layout cells having gaps therebetween, and inserting into each given one of at least a subset of the gaps, a corresponding filler cell selected from a predefined database in dependence upon a desired effect on a performance parameter of at least one circuit cell adjacent to the given gap. The circuit layout cells may be arranged in rows, and in some embodiments the selection of an appropriate filler cell for a given gap depends upon effects desired on a performance parameter of both circuit cells adjacent to the given gap. The predefined filler cells can include, for example, dummy diffusion regions, dummy poly lines, N-well boundary shifts and etch stop layer boundary shifts. In an embodiment, circuit layout cells can be moved in order to accommodate a selected filler cell.
摘要翻译：提供了一种系统和方法，用于将集成电路设计布置成具有间隙的多个电路布局单元，并且将至少一个子空间中的每个给定的一个插入到依赖于预定数据库的相应填充单元对所述给定间隙相邻的至少一个电路单元的性能参数产生期望的影响。电路布局单元可以排成行，并且在一些实施例中，用于给定间隙的适当填充单元的选择取决于与给定间隙相邻的两个电路单元的性能参数所期望的效果。预定义的填充单元可以包括例如虚拟扩散区域，虚拟多线，N阱边界位移和蚀刻停止层边界移位。在一个实施例中，可以移动电路布局单元以便容纳选定的填充单元。

7. 发明申请

US20080297237A1 METHOD FOR COMPENSATION OF PROCESS-INDUCED PERFORMANCE VARIATION IN A MOSFET INTEGRATED CIRCUIT 有权
标题翻译： MOSFET集成电路中过程诱导性能变化补偿的方法
公开(公告)号：US20080297237A1
公开(公告)日：2008-12-04
申请号：US11757338
申请日：2007-06-01
申请人： Victor Moroz , Dipankar Pramanik , Kishore Singhal , Xi-Wei Lin
发明人： Victor Moroz , Dipankar Pramanik , Kishore Singhal , Xi-Wei Lin
IPC分类号： G05F3/02
CPC分类号： G06F17/5068 , G06F17/5036
摘要： An automated method for compensating for process-induced variations in threshold voltage and drive current in a MOSFET integrated circuit. The method's first step is selecting a transistor for analysis from the array. The method loops among the transistors of the array as desired. Next the design of the selected transistor is analyzed, including the steps of determining threshold voltage variations induced by layout neighborhood; determining drive current variations induced by layout neighborhood. The method then proceeds by attempting to compensate for any determined variations by varying the length of the transistor gate. The method can further include the step of identifying any shortcoming in compensation by varying contact spacing.
摘要翻译：用于补偿MOSFET集成电路中阈值电压和驱动电流的过程引起的变化的自动化方法。该方法的第一步是从阵列中选择一个用于分析的晶体管。该方法根据需要在阵列的晶体管之间循环。接下来分析所选择的晶体管的设计，包括确定由布局邻域引起的阈值电压变化的步骤; 确定由布局邻域引起的驱动电流变化。该方法然后通过改变晶体管栅极的长度来尝试补偿任何确定的变化。该方法还可以包括通过改变接触间距来识别补偿中的任何缺点的步骤。

8. 发明申请

US20070202652A1 Elevation of transistor channels to reduce impact of shallow trench isolation on transistor performance 有权
标题翻译：提高晶体管通道，减少浅沟槽隔离对晶体管性能的影响
公开(公告)号：US20070202652A1
公开(公告)日：2007-08-30
申请号：US11364391
申请日：2006-02-27
申请人： Victor Moroz , Dipankar Pramanik , Xi-Wei Lin
发明人： Victor Moroz , Dipankar Pramanik , Xi-Wei Lin
IPC分类号： H01L21/336
CPC分类号： H01L21/823807 , H01L21/823878 , H01L29/7846
摘要： Roughly described, transistor channel regions are elevated over the level of certain adjacent STI regions. Preferably the STI regions that are transversely adjacent to the diffusion regions are suppressed, as are STI regions that are longitudinally adjacent to N-channel diffusion regions. Preferably STI regions that are longitudinally adjacent to P-channel diffusions are not suppressed; preferably they have an elevation that is at least as high as that of the diffusion regions.
摘要翻译：粗略描述，晶体管沟道区域在某些相邻STI区域的水平上升高。优选地，与扩散区横向相邻的STI区域被抑制，与N沟道扩散区域纵向相邻的STI区也是如此。优选地，与P沟道扩散纵向相邻的STI区域不被抑制; 优选地，它们具有至少与扩散区域相同的高度。

9. 发明申请

US20110309453A1 ELEVATION OF TRANSISTOR CHANNELS TO REDUCE IMPACT OF SHALLOW TRENCH ISOLATION ON TRANSISTOR PERFORMANCE 有权
标题翻译：晶体管通道的增加可以减少晶体管性能上的微分离分离的影响
公开(公告)号：US20110309453A1
公开(公告)日：2011-12-22
申请号：US13221747
申请日：2011-08-30
申请人： Victor Moroz , Dipankar Pramanik , Xi-Wei Lin
发明人： Victor Moroz , Dipankar Pramanik , Xi-Wei Lin
IPC分类号： H01L27/092
CPC分类号： H01L21/823807 , H01L21/823878 , H01L29/7846
摘要： Roughly described, transistor channel regions are elevated over the level of certain adjacent STI regions. Preferably the STI regions that are transversely adjacent to the diffusion regions are suppressed, as are STI regions that are longitudinally adjacent to N-channel diffusion regions. Preferably STI regions that are longitudinally adjacent to P-channel diffusions are not suppressed; preferably they have an elevation that is at least as high as that of the diffusion regions.
摘要翻译：粗略描述，晶体管沟道区域在某些相邻STI区域的水平上升高。优选地，与扩散区横向相邻的STI区域被抑制，与N沟道扩散区域纵向相邻的STI区也是如此。优选地，与P沟道扩散纵向相邻的STI区域不被抑制; 优选地，它们具有至少与扩散区域相同的高度。

10. 发明授权

US07542891B2 Method of correlating silicon stress to device instance parameters for circuit simulation 有权
标题翻译：将硅应力与电路仿真器件实例参数相关联的方法
公开(公告)号：US07542891B2
公开(公告)日：2009-06-02
申请号：US11470978
申请日：2006-09-07
申请人： Xi-Wei Lin , Victor Moroz , Dipankar Pramanik
发明人： Xi-Wei Lin , Victor Moroz , Dipankar Pramanik
IPC分类号： G06F17/50
CPC分类号： G06F17/5036
摘要： Roughly described, standard SPICE models can be modified by substituting a different stress analyzer to better model the stress adjusted characteristics of a transistor. A first, standard, stress-sensitive, transistor model is used to develop a mathematical relationship between the first transistor performance measure and one or more instance parameters that are available as inputs to a second, stress-insensitive, transistor model. The second transistor model may for example be the same as the first model, with its stress sensitivity disabled. Thereafter, a substitute stress analyzer can be used to determine a stress-adjusted value for the first performance measure, and the mathematical relationship can be used to convert that value into specific values for the one or more instance parameters. These values are then provided to the second transistor model for use in simulating the characteristics of the particular transistor during circuit simulation.
摘要翻译：粗略描述，可以通过替代不同的应力分析器来更好地模拟晶体管的应力调整特性来修改标准SPICE模型。第一，标准，应力敏感的晶体管模型用于开发第一晶体管性能测量与可用作第二，不应力敏感晶体管模型的输入的一个或多个实例参数之间的数学关系。第二晶体管模型可以例如与第一模型相同，其应力灵敏度被禁用。此后，可以使用替代应力分析器来确定用于第一性能测量的应力调整值，并且可以使用数学关系将该值转换为一个或多个实例参数的特定值。然后将这些值提供给第二晶体管模型，以用于在电路仿真期间模拟特定晶体管的特性。

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