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11. 发明申请

US20050053103A1 Seeking and tracking control for locking to transmision peak for a tunable laser 审中-公开
标题翻译：寻找和跟踪可调谐激光器锁定到传输峰值的控制
公开(公告)号：US20050053103A1
公开(公告)日：2005-03-10
申请号：US10659958
申请日：2003-09-10
申请人： Jiann-Chang Lo , Andrew Daiber , Mark Rice , Rajesh Batra
发明人： Jiann-Chang Lo , Andrew Daiber , Mark Rice , Rajesh Batra
IPC分类号： H04B10/155 , H01S3/10 , H01S3/13
CPC分类号： H04B10/572 , H04B10/504
摘要： A servo or control technique and apparatus for performing wavelength locking employs the phase-shift modulation scheme to adjust one or more optical elements in the laser cavity to lock the lasing frequency toward a desired channel frequency. A controller comprises a high bandwidth mode and a low bandwidth mode. When initially locking to a new channel, the high bandwidth controller mode may be used to supply more energy to drive an actuator to achieve faster seeking. When an error signal approaches within a pre-defined threshold of zero error, the controller may be switched to a lower bandwidth mode supplying less power to the actuator to softly approach the target frequency and avoid overshoot. The lower bandwidth controller mode may keep the noise level lower and provide better frequency tracking stability to the tunable laser.
摘要翻译：用于执行波长锁定的伺服或控制技术和装置采用相移调制方案来调节激光腔中的一个或多个光学元件以将激光频率锁定到期望的通道频率。控制器包括高带宽模式和低带宽模式。当最初锁定到新通道时，高带宽控制器模式可用于提供更多的能量来驱动致动器以实现更快的寻找。当误差信号接近预定义的零误差阈值时，控制器可以切换到较低带宽模式，为致动器提供较少的功率，以轻柔地接近目标频率并避免过冲。较低带宽控制器模式可以使噪声水平更低，并为可调谐激光器提供更好的频率跟踪稳定性。

12. 发明授权

US5626276A Linkage drive mechanism for ultrasonic wirebonding 失效
标题翻译：超声波引线接合联动驱动机构
公开(公告)号：US5626276A
公开(公告)日：1997-05-06
申请号：US616127
申请日：1996-03-14
申请人： Jiann-Chang Lo , Michael Servedio
发明人： Jiann-Chang Lo , Michael Servedio
IPC分类号： B23K20/00 , H01L21/603
CPC分类号： H01L24/85 , B23K20/005 , H01L24/78 , H01L2224/45014 , H01L2224/45144 , H01L2224/48091 , H01L2224/48472 , H01L2224/78302 , H01L2224/85181 , H01L2224/85203 , H01L2224/85205 , H01L24/45 , H01L2924/01006 , H01L2924/01013 , H01L2924/01015 , H01L2924/01023 , H01L2924/01028 , H01L2924/01033 , H01L2924/01074 , H01L2924/01079 , H01L2924/01082 , H01L2924/14 , H01L2924/19041 , H01L2924/19043
摘要： An ultrasonic wirebonding assembly, consisting of an actuator producing vibrations at an ultrasonic frequency and a tip transmitting such vibrations to a bonding wire atop a terminal to which the wire is to be bonded, is moved among positions on a circuit chip where wirebonding operations are to occur by means of a linkage. The linkage consists of first and second drive arms, each of which is pivoted on a single stationary shaft, a drive link pivoted on the second drive arm, and a connecting link extending between the drive link and the first drive arm, being pivoted at each end. Each arm is independently driven using a motor having a coil moving over an arcuate permanent magnet. The wirebonding assembly is driven vertically, downward in a direction of engagement with the workpiece and upward in a direction of disengagement with the workpiece, on the drive link by means of a linear motor. The rapid movements available from this linkage facilitate the use of an incrementally moving conveyer holding a number of circuit chips on which wirebonding operations are to be performed.
摘要翻译：超声波引线接合组件，其由产生超声频率的振动的致动器和将这种振动传递到端子上的接合线的尖端在导线接合操作的电路芯片上的位置之间移动，通过联动发生。连杆由第一和第二驱动臂组成，每个驱动臂在单个固定轴上枢转，在第二驱动臂上枢转的驱动连杆和在驱动连杆与第一驱动臂之间延伸的连接连杆，结束。每个臂使用具有在弓形永磁体上移动的线圈的电动机独立地驱动。引线接合组件沿着与工件接合的方向向下垂直地驱动，并且在与工件脱离的方向上，通过线性电动机在驱动连杆上向上驱动。从这种连接可以获得的快速运动便于使用保持多个电路芯片的递增移动的输送机，在该输送机上进行引线键合操作。

13. 发明授权

US5528033A Automatic surface profiling for submicron device 失效
标题翻译：亚微米器件的自动表面轮廓
公开(公告)号：US5528033A
公开(公告)日：1996-06-18
申请号：US413070
申请日：1995-03-29
申请人： Jiann-Chang Lo , Timothy J. O'Leary
发明人： Jiann-Chang Lo , Timothy J. O'Leary
IPC分类号： G01B11/02 , G01B7/34 , G01B11/26 , G01B21/30 , G01Q30/04 , G01Q30/06 , G01Q60/38 , H01J37/00 , H01J37/26
CPC分类号： G01Q60/38 , B82Y35/00 , G01B7/34 , G01Q30/04 , G01Q30/06 , Y10S977/839 , Y10S977/85 , Y10S977/852 , Y10S977/863
摘要： A method for automatically providing a surface profile analysis of a submicron device using a microscope system typically used to measure critical dimensions of the submicron device is disclosed. The method generates a data point array that is linearly interpolated along a particular scan line measured. The system then calculates an angle for performing a rotational correlation then rotates the measurement profile from the scan line to an absolute horizontal position based on this rotational correlation angle. Next, the system separates the scan line into independent subset features having line and trench features. The number of these line and trench features are then determined in the scan line and using the data point array, the system then calculates the height, width, and angle for each subset feature in that scan line.
摘要翻译：公开了一种用于使用通常用于测量亚微米器件的临界尺寸的显微镜系统自动提供亚微米器件的表面轮廓分析的方法。该方法产生沿所测量的特定扫描线线性内插的数据点阵列。然后，该系统计算用于执行旋转相关的角度，然后基于该旋转相关角度将测量轮廓从扫描线旋转到绝对水平位置。接下来，系统将扫描线分成具有线和沟槽特征的独立子集特征。然后在扫描线中确定这些线和沟槽特征的数量，并使用数据点阵列，系统然后计算该扫描线中每个子集特征的高度，宽度和角度。

14. 发明授权

US06252414B1 Method and apparatus for testing circuits having different configurations with a single test fixture 失效
标题翻译：用单个测试夹具测试具有不同结构的电路的方法和装置
公开(公告)号：US06252414B1
公开(公告)日：2001-06-26
申请号：US09140225
申请日：1998-08-26
申请人： James Edward Boyette, Jr. , Jiann-Chang Lo , Yuet-Ying Yu
发明人： James Edward Boyette, Jr. , Jiann-Chang Lo , Yuet-Ying Yu
IPC分类号： G01R3102
CPC分类号： G01R31/2884
摘要： A fixture for testing circuits includes a rectangular array of conductive test pads, alternating with insulating areas in a checkerboard-like pattern. In a first embodiment, the entire array is printed on a central portion of a plastic membrane, with outer portions of the membrane carrying electrical lines from the test pads to connectors. In a second embodiment, the rectangular array is formed on surfaces of a number of closely packet plastic membranes, each of which has tabs extending away from the testing surface to connectors. The test fixture is generic, not being configured for testing a particular circuit configuration. To compensate for conditions of linear misalignment, the rectangular array is moved in a raster pattern having a size equal to the cell size of the rectangular array. To compensate for conditions of angular misalignment, the array may be rotated after such misalignment is measured, or test results may be compared with exemplary data for a number of misalignment conditions.
摘要翻译：用于测试电路的夹具包括导电测试焊盘的矩形阵列，与棋盘状图案的绝缘区域交替。在第一实施例中，整个阵列印刷在塑料膜的中心部分上，膜的外部部分将电线从测试垫传送到连接器。在第二实施例中，矩形阵列形成在多个紧密包装的塑料膜的表面上，每个塑料膜具有从测试表面延伸到连接器的突出部。测试夹具是通用的，未配置用于测试特定的电路配置。为了补偿线性未对准的条件，矩形阵列以尺寸等于矩形阵列的单元大小的光栅图案移动。为了补偿角度未对准的情况，可以在测量这种不对准之后旋转阵列，或者可以将测试结果与许多不对准条件的示例性数据进行比较。

15. 发明授权

US06201383B1 Method and apparatus for determining short circuit conditions using a gang probe circuit tester 失效
标题翻译：使用组合探头电路测试仪确定短路条件的方法和装置
公开(公告)号：US06201383B1
公开(公告)日：2001-03-13
申请号：US09010910
申请日：1998-01-22
申请人： Jiann-Chang Lo , James Christopher Mahlbacher
发明人： Jiann-Chang Lo , James Christopher Mahlbacher
IPC分类号： G01R1900
CPC分类号： G01R1/07385 , G01R31/024
摘要： A method for determining whether short circuits exist among networks within a circuit under test includes bringing test probes into contact with each such network and switching groups of the test probes among two sides of a test circuit so that current flows through the testing circuit only when one of the test probes connected to one side of the testing circuit is connected by means of a short circuit to one of the test probes connected to the other side of the test circuit. This first test process establishes the fact that a short circuit exists without determining which networks are connected by the short circuit. A version of this method subsequently applies tests to individual networks to make this determination, in the event that a short circuit is found to exist by the first test process. Other versions of this method additionally determine which networks are connected to which other networks by short circuits.
摘要翻译：一种用于确定被测电路内的网络之间是否存在短路的方法，包括使测试探针与每个这样的网络接触，并且在测试电路的两侧之间切换测试探针组，使得电流仅在一个连接到测试电路一侧的测试探头通过短路连接到连接到测试电路另一侧的测试探头之一。该第一测试过程确定了短路存在而不确定通过短路连接哪些网络的事实。该方法的一个版本随后在第一个测试过程发现存在短路的情况下，将测试应用于各个网络进行此确定。该方法的其他版本另外确定哪些网络通过短路连接到哪个其他网络。

16. 发明授权

US5775567A Apparatus for wirebonding using a tubular piezoelectric ultrasonic transducer 失效
标题翻译：使用管状压电超声换能器进行引线接合的装置
公开(公告)号：US5775567A
公开(公告)日：1998-07-07
申请号：US616128
申请日：1996-03-14
申请人： Jiann-Chang Lo , Michael Servedio
发明人： Jiann-Chang Lo , Michael Servedio
IPC分类号： B23K20/00 , B23K20/10
CPC分类号： H01L24/85 , B23K20/005 , H01L24/78 , H01L2224/45144 , H01L2224/48091 , H01L2224/48472 , H01L2224/78302 , H01L2224/78347 , H01L2224/85203 , H01L2224/85205 , H01L24/45 , H01L2924/01006 , H01L2924/01013 , H01L2924/01015 , H01L2924/01023 , H01L2924/01028 , H01L2924/01033 , H01L2924/01074 , H01L2924/01079 , H01L2924/01082 , H01L2924/14 , H01L2924/19041 , H01L2924/19043
摘要： In ultrasonic wirebonding apparatus, vibrations produced using a tubular piezoelectric (piezoceramic) actuator, driven by electrical current at an ultrasonic frequency, are used to provide energy for the wirebonding process. An assembly including means for mounting the actuator at a proximal end, the actuator itself, and a bonding tip extending from a distal end of the actuator, are moved by a carrier between the various points at which wirebonding is to occur. The bonding wire is fed through a passageway in this assembly. The carrier slides on a first carriage for movement into engagement with the workpiece. The first carriage slides in a first direction on a second carriage, which in turn slides in a second direction, to move between points at which wirebonding is to occur. The workpieces, such as circuit chips being manufactured, are moved into a workspace for wirebonding, are held therein during processing, and are subsequently removed from the workspace.
摘要翻译：在超声波引线接合装置中，使用由超声频率的电流驱动的管状压电（压电陶瓷）致动器产生的振动用于为引线接合工艺提供能量。包括用于将致动器安装在近端的装置，致动器本身以及从致动器的远端延伸的接合末端通过载体在要发生引线接合的各个点之间移动。接合线通过该组件中的通道进给。载体在第一滑架上滑动以与工件接合。第一托架在第二托架上沿第一方向滑动，第二托架又沿第二方向滑动，以在要进行引线接合的点之间移动。工件（例如制造的电路芯片）被移动到用于引线接合的工作空间中，在处理期间被保持在其中，并随后从工作空间中移除。

17. 发明授权

US07468996B2 External cavity laser tuning element dither servo control 有权
公开(公告)号：US07468996B2
公开(公告)日：2008-12-23
申请号：US11647783
申请日：2006-12-29
申请人： Andrew Daiber , Anand S. Ramalingam , Jiann-Chang Lo , Douglas A. Sprock , William B. Chapman
发明人： Andrew Daiber , Anand S. Ramalingam , Jiann-Chang Lo , Douglas A. Sprock , William B. Chapman
IPC分类号： H01S3/10
CPC分类号： H01S5/141 , H01S3/1062 , H01S5/02248 , H01S5/02415 , H01S5/02438 , H01S5/0617 , H01S5/06804 , H01S5/0687
摘要： According to embodiments of the present invention, an external cavity laser includes one or more tuning elements. At least one modulated voltage signal or dither is used to lock the transmission peak of the two tuning elements to each other. The wavelength of the laser also may lock onto the lock transmission peaks. In embodiments in which two dither signals are used, the dither signals may be orthogonal to or independent of each other. The two dither signals may produce two control signals to align the transmission peak of one filter to the transmission peak of another filter and the lasing mode of the laser to the aligned filters.

18. 发明授权

US06661815B1 Servo technique for concurrent wavelength locking and stimulated brillouin scattering suppression 有权
标题翻译：用于并发波长锁定和受激布里渊散射抑制的伺服技术
公开(公告)号：US06661815B1
公开(公告)日：2003-12-09
申请号：US10335684
申请日：2002-12-31
申请人： William J. Kozlovsky , Andrew Daiber , Doug Sprock , Mark S. Rice , Jiann-Chang Lo , Rob Carney
发明人： William J. Kozlovsky , Andrew Daiber , Doug Sprock , Mark S. Rice , Jiann-Chang Lo , Rob Carney
IPC分类号： H01S313
CPC分类号： H04B10/504 , H01S5/0612 , H01S5/0617 , H01S5/06226 , H01S5/0687 , H01S5/14 , H01S5/141 , H04B10/2537
摘要： A servo technique for concurrently providing wavelength locking and stimulated Brillouin scattering (SBS) suppression in an external cavity laser. Respective wavelength locking and SBS suppression signals are generated by a controller and combined into a composite drive signal. The composite drive signal is used to drive an optical path length adjustment element to modulate the optical path length of the laser cavity. The wavelength locking and SBS suppression portions of the drive signals produce concurrent modulations of the laser optical path length having different modulation frequencies and causing different frequency (wavelength) excursions. These modulations produce corresponding wavelength and intensity amplitude modulations in the laser's output. A feedback signal indicative of the intensity amplitude modulations is filtered to attenuate the portion of the signal due to the SBS suppression modulation, and is received as a tuning feedback signal by the controller. In response, the control provides a tuning adjustment signal to adjust the frequency of the laser.
摘要翻译：一种用于在外腔激光器中同时提供波长锁定和受激布里渊散射（SBS）抑制的伺服技术。相应的波长锁定和SBS抑制信号由控制器产生并组合成复合驱动信号。复合驱动信号用于驱动光程长度调节元件以调制激光腔的光程长度。驱动信号的波长锁定和SBS抑制部分产生具有不同调制频率的激光光路长度的并发调制并导致不同的频率（波长）偏移。这些调制在激光输出中产生相应的波长和强度幅度调制。滤波表示强度幅度调制的反馈信号，以衰减由SBS抑制调制引起的信号部分，并由控制器作为调谐反馈信号接收。作为响应，控制提供调谐调节信号以调节激光器的频率。

19. 发明授权

US06163090A Probe position actuator with an elongated stroke 失效
标题翻译：探头位置执行器具有细长的行程
公开(公告)号：US06163090A
公开(公告)日：2000-12-19
申请号：US334232
申请日：1999-06-16
申请人： Robert Edward Brown , Christian J. Bunker , Jiann-Chang Lo
发明人： Robert Edward Brown , Christian J. Bunker , Jiann-Chang Lo
IPC分类号： F16C29/04 , F16C29/12 , G01R1/067 , H02K33/18 , H02K41/02 , H02K41/03 , H02K41/035 , H02K41/00
CPC分类号： F16C29/12 , F16C29/04 , G01R1/06705 , H02K41/0356
摘要： A linear actuator includes a stationary stator and an external armature moving with a coil moving within a magnetic structure. A linear bearing including a stationary track fastened to the stator and a moving track fastened to the armature extends on each side of the magnetic structure. In each linear bearing, balls rotate between the stationary and moving tracks with movement of the armature. During the process of manufacturing the linear actuator, the moving track of each linear bearing is loosely mounted to the armature, a pre-load force is applied to the moving track using a tool fastened to the armature, and the moving track is clamped in place so that the pre-load force is subsequently maintained.
摘要翻译：线性致动器包括固定定子和外部衔铁，该磁体在磁性结构内移动。包括固定到定子的固定轨道和紧固到电枢的移动轨道的线性轴承在磁性结构的每一侧延伸。在每个线性轴承中，滚珠在固定和移动的轨道之间随着电枢的移动而转动。在制造线性致动器的过程中，每个线性轴承的移动轨道松动地安装到电枢上，使用固定到电枢的工具将预加载力施加到移动轨道，并且移动轨道被夹紧就位从而保持预加载力。

20. 发明授权

US5635849A Miniature probe positioning actuator 失效
标题翻译：微型探头定位执行器
公开(公告)号：US5635849A
公开(公告)日：1997-06-03
申请号：US643523
申请日：1996-05-06
申请人： Jiann-Chang Lo , Michael Servedio , James M. Hammond , James E. Boyette, Jr. , Hans-George H. Kolan
发明人： Jiann-Chang Lo , Michael Servedio , James M. Hammond , James E. Boyette, Jr. , Hans-George H. Kolan
IPC分类号： G01R31/26 , G01R1/067 , G01R1/073 , G01R31/28 , H01L21/66 , H02K41/03 , G01R31/22
CPC分类号： G01R1/06705
摘要： Disclosed is a Probe Positioning Actuator which is low in cost and mass, capable of high accelerations, relatively long stroke and compact packaging, as well as high in efficiency. The actuator assembly comprises a frame, and at least one pair of spaced apart, laterally extending, conductor carrying, flexible beams attached to the frame. A non-magnetic armature, substantially U-shaped in cross section, is attached adjacent or approximate the extended terminal ends of the beams, and a probe is attached to the base of the "U" of the armature for contacting selected points in the electrical circuit associated with the device being tested. The heart of the actuator includes a coil mounted on the upstanding legs of the U-shaped armature and arranged so that the axis of the coil is perpendicular to the base of the armature but substantially parallel to the probe tip. This arrangement places the `motor` portion of the actuator adjacent the probe and permits accurate and repeatable, fast control of not only probe tip position but probe tip movement. To complete the motor portion of the actuator, means, carried by the frame create a magnetic field across the coil, whereby upon energization of the coil, deflection of the armature (and thus the beams) occurs, effecting movement of the probe tip into contact with selected portions of the device being tested.
摘要翻译：公开了一种探头定位致动器，其成本和质量低，能够具有高加速度，相对长的行程和紧凑的包装以及高的效率。致动器组件包括框架，以及连接到框架的至少一对间隔开的横向延伸的导体承载的柔性梁。基本上U形的横截面的非磁性衔铁被安装在梁的延伸的末端附近或近似的位置，并且探头附接到电枢的“U”的底部，用于接触电气中的选定点与被测设备相关的电路。致动器的心脏包括安装在U形衔铁的直立腿上的线圈，并被布置成使得线圈的轴线垂直于电枢的基部，但基本上平行于探针尖端。这种布置使致动器的“电动机”部分邻近探头，并且允许精确和可重复地，快速地控制探针尖端位置，但是探针尖端运动。为了完成致动器的电动机部分，由框架承载的装置在线圈上产生磁场，由此在线圈通电时，发生电枢（以及因此的梁）的偏转，使探针尖端移动到接触该设备的选定部分被测试。

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