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51. 发明授权

US07042200B2 Switching mode power conversion with digital compensation 有权
标题翻译：开关模式电源转换采用数字补偿
公开(公告)号：US07042200B2
公开(公告)日：2006-05-09
申请号：US10408530
申请日：2003-04-07
申请人： Jun Chen , Keith Kunz
发明人： Jun Chen , Keith Kunz
IPC分类号： G05F1/40
CPC分类号： H02M3/156 , H02M2001/0012 , H02M2001/0025
摘要： The present invention provides improved line and load regulation of a switching-mode power converter (300) without requiring additional capacitors (255), either internally or externally, to stabilize the control loop. The present invention can provide this by integrating a digital compensator (375) with the pulse-width modulator (“PWM”) of the switching-mode power converter. Such a compensator (375) can include comparators (310 and 330), digital circuits (340), and resistors (215, 220, 320, and 325).
摘要翻译：本发明提供了开关模式功率转换器（300）的改进的线路和负载调节，而不需要在内部或外部的附加电容器（255）来稳定控制回路。本发明可以通过将数字补偿器（375）与开关模式功率转换器的脉冲宽度调制器（“PWM”）集成来提供这一点。这种补偿器（375）可以包括比较器（310和330），数字电路（340）和电阻器（215,220,320和325）。

52. 发明申请

US20050152532A1 Analog subscriber board 有权
标题翻译：模拟用户板
公开(公告)号：US20050152532A1
公开(公告)日：2005-07-14
申请号：US11002253
申请日：2004-12-03
申请人： Lei Liu , Jun Chen , Ying Chen , WeiJun Gu
发明人： Lei Liu , Jun Chen , Ying Chen , WeiJun Gu
IPC分类号： H04M3/00 , H04M3/30 , H04M19/02 , H04M1/00 , H04M1/24 , H04M3/08 , H04M3/22
CPC分类号： H04M3/30 , H04M3/005
摘要： The present invention is a new solution of line and relay in an analog subscriber board, which has a less number of relays and can decrease the cost and save the space while realizing the basic functions in a voice network. The technical solution of the invention provides each subscriber with two relays to connect the subscriber line interface circuit, the subscriber line, the ring bus and the test bus, realizing the basic functions relevant to the talking, such as talking, ringing, etc. In order to add the auxiliary functions such as the testing function and the monitoring function, the subscriber lines are grouped, and at least one relay is supplemented in a subscriber group, the subscriber group relays together with above two subscriber relays will be used to connect the subscriber line interface circuit, the subscriber line, the ring bus and the test bus to perform the basic functions relevant to talking and the auxiliary functions such as testing, monitoring, etc.
摘要翻译：本发明是模拟用户板中的线路和继电器的新解决方案，其具有较少数量的继电器，并且可以在实现语音网络中的基本功能的同时降低成本并节省空间。本发明的技术方案为每个用户提供两个连接用户线接口电路，用户线，环形总线和测试总线的中继器，实现与通话，振铃等相关的基本功能。为了添加诸如测试功能和监视功能的辅助功能，用户线路被分组，并且在用户组中补充至少一个中继器，则用户组中继与上述两个用户中继将被用于连接用户线接口电路，用户线路，环形总线和测试总线，执行与通话相关的基本功能和辅助功能，如测试，监控等。

53. 发明申请

US20050110471A1 Single inductor dual output buck converter with frequency and time varying offset control 有权
标题翻译：单电感双输出降压转换器，具有频率和时变偏移控制
公开(公告)号：US20050110471A1
公开(公告)日：2005-05-26
申请号：US10722270
申请日：2003-11-25
申请人： Valerian Mayega , Jun Chen , James Krug , David Evans
发明人： Valerian Mayega , Jun Chen , James Krug , David Evans
IPC分类号： G05F1/577 , H02M3/155 , H02M3/156
CPC分类号： H02M3/156 , H02M3/155
摘要： A single-inductor dual-output buck converter and control method that facilitates power conversion by converting a single DC power source/supply into two separate DC outputs, each of which can be configured to provide a selected/desired voltage by selection of respective duty cycles. The topology of the inverter includes a pair of diodes or switches that can selectively re-circulate inductor current. The converter is generally operated at a fixed frequency with four stages of operation. A first and third stage of operation provide power to a first and second output, respectively. A second and fourth stage of operation re-circulate inductor current and can partially recharge a battery type power source. The power output for each stage (voltage and current) can be selectively obtained by computing and employing appropriate time periods for the stages of operation that correspond to appropriate duty cycles.
摘要翻译：单电感双输出降压转换器和控制方法，通过将单个DC电源/电源转换为两个独立的直流输出来促进功率转换，每个直流输出可以被配置为通过选择相应的占空比来提供选定/期望的电压。逆变器的拓扑结构包括一对二极管或开关，可以选择性地重新循环电感电流。转换器通常以固定频率工作，具有四个操作阶段。第一和第三操作阶段分别为第一和第二输出提供电力。第二和第四阶段的操作重新循环电感电流，并且可以部分地为电池型电源充电。可以通过对与适当的占空比相对应的操作阶段计算和采用适当的时间周期来选择性地获得每个级的电力输出（电压和电流）。

54. 发明授权

US06623159B2 Method for analyzing thermal deformation 失效
公开(公告)号：US06623159B2
公开(公告)日：2003-09-23
申请号：US09942876
申请日：2001-08-31
申请人： Tadayoshi Takahara , Jun Chen , Yoshio Sugimoto
发明人： Tadayoshi Takahara , Jun Chen , Yoshio Sugimoto
IPC分类号： G01N2516
CPC分类号： G01N33/442 , G01N2203/0057 , G01N2203/0071
摘要： In order to precisely analyze thermal deformation of a substance which thermally shrinks over time, the amount of deformation of a substance is determined by separate steps of calculation of elasto-plastic deformation during temperature increase (step S12); calculation of creep deformation from the time when the temperature increase is completed till the time when the temperature decrease is started (step S14); and calculation of elasto-plastic deformation during the temperature decrease (step S16). When calculating the creep deformation, it is assumed that deformation due to the thermal shrinkage of the substance over time occurs simultaneous with the creep deformation, and strain rate is calculated as the time derivative of the total strain which is the sum of creep strain and the strain produced by thermal shrinkage. The creep deformation is then calculated by integrating the strain rate over the time from when the temperature increase is completed until the time when the temperature decrease is started.

55. 发明授权

US11910721B2 Perpendicular MTJ element having a cube-textured reference layer and methods of making the same 有权
公开(公告)号：US11910721B2
公开(公告)日：2024-02-20
申请号：US17373757
申请日：2021-07-12
申请人： Yimin Guo , Rongfu Xiao , Jun Chen
发明人： Yimin Guo , Rongfu Xiao , Jun Chen
IPC分类号： H10N50/01 , H01F10/32 , G11C11/16 , H10N50/10 , H10N50/80 , H10N50/85
CPC分类号： H10N50/01 , G11C11/161 , H01F10/3272 , H01F10/3286 , H10N50/10 , H10N50/80 , H10N50/85
摘要： The invention comprises a method of forming a novel magnetic pinning structure having a (100) textured or cube-textured reference layer through a non-epitaxial texturing approach so that an excellent coherent tunneling effect is achieved in a pMTJ element due to its texture structure of CoFe BCC (100)/MgO rocksalt (100)/CoFe BCC (100). Correspondingly, a high MR ratio and a high pinning strength on the reference layer can be achieved for perpendicular spin-transfer-torque magnetic-random-access memory (pSTT-MRAM) using perpendicular magnetoresistive elements as basic memory cells which potentially replace the conventional semiconductor memory used in electronic chips, especially mobile chips for power saving and non-volatility.

56. 发明授权

US11854589B2 STT-SOT hybrid magnetoresistive element and manufacture thereof 有权
公开(公告)号：US11854589B2
公开(公告)日：2023-12-26
申请号：US17509014
申请日：2021-10-24
申请人： Yimin Guo , Rongfu Xiao , Jun Chen
发明人： Yimin Guo , Rongfu Xiao , Jun Chen
IPC分类号： G11C11/00 , G11C11/16 , G11B5/39 , H01F10/32 , H10B61/00 , H10N50/10 , H10N50/85 , H10N52/01 , H10N52/80
CPC分类号： G11C11/161 , G11B5/3909 , G11C11/1675 , H01F10/3286 , H10B61/22 , H10N50/10 , H10N50/85 , H10N52/01 , H10N52/80
摘要： A magnetoresistive element comprises a nonmagnetic sidewall-current-channel (SCC) structure provided on a surface of the SOT material layer that exhibits the Spin Hall Effect, which is opposite to a surface of the SOT material layer where the magnetic recording layer is provided, and comprising an insulating medium in a central region of the SCC structure, and a conductive medium being a sidewall of the SCC structure and surrounding the insulating medium, making an electric current crowding inside the SOT material layer and the magnetic recording layer to achieve a spin-orbit torque and a higher spin-polarization degree for an applied electric current.

57. 发明授权

US11444239B1 Magnetoresistive element having an adjacent-bias layer and a toggle writing scheme 有权
公开(公告)号：US11444239B1
公开(公告)日：2022-09-13
申请号：US17187864
申请日：2021-02-28
申请人： Yimin Guo , Rongfu Xiao , Jun Chen
发明人： Yimin Guo , Rongfu Xiao , Jun Chen
IPC分类号： G11C11/00 , H01L43/02 , H01L27/22 , G11C11/16 , H01L43/10
摘要： A magnetoresistive element using combined spin-transfer-torque controlled magnetic bias and VCMA effects comprising a free layer and an adjacent-bias layer separated by a nonmagnetic spacing layer, wherein the free layer has an interfacial perpendicular magnetic anisotropy and a variable magnetization direction substantially perpendicular to a film surface, the adjacent-bias layer has a perpendicular magnetic anisotropy and a variable magnetization direction substantially perpendicular to a film surface, and the perpendicular anisotropy of the free layer is sufficiently higher than that of the adjacent-bias layer such that the critical switching current to reverse the free layer magnetization direction is at least 3 times as high as the critical switching current to reverse the adjacent-bias layer magnetization direction. Further, there is provided a toggle writing method of the perpendicular magnetoresistive element comprises: applying a first write pulse having a first voltage magnitude and a first pulse width to reverse the adjacent-bias layer magnetization direction to be anti-parallel to the free layer magnetization direction by spin-transfer-torque effect, and applying a second write pulse having a second voltage magnitude and a second pulse width to reverse the free layer magnetization direction to be parallel to the adjacent-bias layer magnetization direction by voltage-controlled magnetic anisotropy effect under the magnetic dipole bias field from the adjacent-bias layer.

58. 发明申请

US20220238799A1 MAGNETORESISTIVE ELEMENT HAVING A COMPOSITE RECORDING STRUCTURE 有权
公开(公告)号：US20220238799A1
公开(公告)日：2022-07-28
申请号：US17160349
申请日：2021-01-27
申请人： Yimin Guo , Rongfu Xiao , Jun Chen
发明人： Yimin Guo , Rongfu Xiao , Jun Chen
IPC分类号： H01L43/12 , H01L43/10 , H01L43/02
摘要： A method of forming a bottom-pinned magnetoresistive element comprising a composite recording structure that includes a first magnetic free layer and a second magnetic free layer containing Ni atoms, separated by an oxide spacing layer. The first magnetic free layer is Ni-free and the first magnetic free layer and the second magnetic free layer are magnetically parallel-coupled. A magnetic STT-enhancing structure is further provided atop the cap layer, wherein the magnetic STT-enhancing structure comprises a first magnetic material layer atop the cap layer and having a perpendicular magnetic anisotropy and an invariable magnetization anti-parallel to the magnetization direction of the reference layer, a second anti-ferromagnetic coupling (AFC) layer atop the first magnetic material layer, and a second magnetic material layer atop the second AFC layer.

59. 发明授权

US11316102B2 Composite multi-stack seed layer to improve PMA for perpendicular magnetic pinning 有权
公开(公告)号：US11316102B2
公开(公告)日：2022-04-26
申请号：US16865810
申请日：2020-05-04
申请人： Yimin Guo , Rongfu Xiao , Jun Chen
发明人： Yimin Guo , Rongfu Xiao , Jun Chen
IPC分类号： H01L43/10 , H01L43/08 , H01F10/12 , H01F10/32 , H01F10/30
摘要： The invention comprises a novel composite multi-stack seed layer (CMSL) having lattice constant matched crystalline structure with the Co layer in above perpendicular magnetic pinning layer (pMPL) so that an excellent epitaxial growth of magnetic super lattice pinning layer [Co/(Pt, Pd or Ni)]n along its FCC (111) orientation can be achieved, resulting in a significant enhancement of perpendicular magnetic anisotropy (PMA) for perpendicular spin-transfer-torque magnetic-random-access memory (pSTT-MRAM) using perpendicular magnetoresistive elements as basic memory cells which potentially replace the conventional semiconductor memory used in electronic chips, especially mobile chips for power saving and non-volatility.

60. 发明申请

US20210230248A1 Multivalent pharmacophores for high avidity and overexpressed-target specific binding and uses thereof 有权
公开(公告)号：US20210230248A1
公开(公告)日：2021-07-29
申请号：US16752644
申请日：2020-01-25
申请人： Jun Chen
发明人： Jun Chen
IPC分类号： C07K14/705
摘要： Overexpression of a variety of cell surface markers in cancer cells and/or non-cancer cells in the tumor microenvironment is an important hallmark for many types of cancers and is associated with cancer progression and poor prognosis. This invention provides multivalent pharmacophores for high avidity and specific binding to these overexpressed markers with much reduced binding to normally-expressed targets in healthy tissues. Further, the pharmacophores will not be interfered by soluble targets present in the circulatory systems and in tumor microenvironment. This new class of targeting therapeutics and diagnostics will provide better efficacy in cancer treatment and higher accuracy in cancer diagnosis than the currently available therapeutic and diagnostic means. This invention will also expand the range of targets that can be targeted in both cancer treatment and diagnosis, and more types of cancers can be treated target-specifically. Other diseases that have overexpressed cell surface markers in diseased cells will also be benefitted from this invention.

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