公开(公告)号：US20120007216A1

公开(公告)日：2012-01-12

申请号：US12834853

申请日：2010-07-12

Applicant: Benedict C. K. Choy ,  Ching Chu ,  Haibing (Robin) Liu ,  Ming-Yuan Yeh

Inventor： Benedict C. K. Choy ,  Ching Chu ,  Haibing (Robin) Liu ,  Ming-Yuan Yeh

IPC: H01L29/00 ,  H01L23/495

CPC classification number: H01L29/0642 ,  H01L23/481 ,  H01L23/49575 ,  H01L23/525 ,  H01L24/06 ,  H01L24/29 ,  H01L24/48 ,  H01L24/49 ,  H01L27/088 ,  H01L29/0878 ,  H01L29/66712 ,  H01L29/7809 ,  H01L29/7827 ,  H01L2224/05553 ,  H01L2224/05554 ,  H01L2224/05599 ,  H01L2224/32245 ,  H01L2224/48091 ,  H01L2224/48135 ,  H01L2224/48137 ,  H01L2224/48247 ,  H01L2224/49171 ,  H01L2224/73265 ,  H01L2224/85399 ,  H01L2924/00014 ,  H01L2924/01005 ,  H01L2924/01014 ,  H01L2924/01033 ,  H01L2924/01075 ,  H01L2924/01082 ,  H01L2924/07802 ,  H01L2924/10161 ,  H01L2924/10329 ,  H01L2924/1305 ,  H01L2924/14 ,  H01L2224/45099 ,  H01L2924/00

Abstract: A circuit module comprises a die attach pad with a surface and a plurality of leads surrounding the surface. A nonconductive adhesive is on the surface. A plurality of electronic circuit dies are on the surface of the die attach pad. Each die has a top surface and a bottom surface with the bottom surface on the adhesive. The top surface has a plurality of bonding pads. A first electronic circuit die has at least one routing path of a conductive material connecting a first bonding pad to a second bonding pad. A first bonding wire connects a bonding pad of a second electronic circuit die to the first bonding pad of the first electronic die. A second bonding wire connects the second bonding pad of the first electronic circuit die to a lead. Where one of the dies contains vertical circuit element, where a doped layer forms a terminal along the bottom surface of the layer, a trench filled with doped polysilicon extends from the top surface to the terminal to connect to the terminal. The doped polysilicon filled trench also serves to isolate and separate different circuit elements.

Abstract translation: 电路模块包括具有表面的管芯附接垫和围绕表面的多个引线。 非导电粘合剂在表面上。 多个电子电路管芯在管芯附着垫的表面上。 每个模具具有顶表面和底表面，底表面在粘合剂上。 顶表面具有多个接合焊盘。 第一电子电路管芯具有将第一接合焊盘连接到第二接合焊盘的导电材料的至少一个布线路径。 第一接合线将第二电子电路管芯的接合焊盘连接到第一电子管芯的第一接合焊盘。 第二接合线将第一电子电路管芯的第二接合焊盘连接到引线。 在其中一个裸片包含垂直电路元件的情况下，其中掺杂层沿着该层的底表面形成端子，填充有掺杂多晶硅的沟槽从顶表面延伸到端子以连接至端子。 掺杂多晶硅填充的沟槽还用于隔离和分离不同的电路元件。

公开(公告)号：US20100201428A1

公开(公告)日：2010-08-12

申请号：US12367310

申请日：2009-02-06

Applicant: Ching Chu

Inventor： Ching Chu

IPC: H03K17/00

CPC classification number: H03K17/002 ,  H03K17/693

Abstract: An integrated circuit high voltage analog switch has digital logic-level control interface circuit. A level translator is coupled to the digital logic-level control interface circuit. A plurality of output multi-channel high voltage switches is coupled to the level translator.

Abstract translation: 集成电路高压模拟开关具有数字逻辑电平控制接口电路。 电平转换器耦合到数字逻辑电平控制接口电路。 多个输出多通道高压开关耦合到电平转换器。

公开(公告)号：US08648627B1

公开(公告)日：2014-02-11

申请号：US13587551

申请日：2012-08-16

Applicant: Ching Chu

Inventor： Ching Chu

IPC: H03B21/00

CPC classification number: G10K11/346

Abstract: An electrical waveform generating circuit has a programmable current source-driver. A digital switched current source is coupled to the programmable current source-driver and controlled by waveforms stored in the programmable current source-driver. A plurality of MOSFETs is coupled to the programmable current source driver. A first coupled inductor is connected to the plurality of high voltage MOSFETs. A transducer is coupled to the first coupled inductor.

Abstract translation: 电波形发生电路具有可编程电流源驱动器。 数字开关电流源耦合到可编程电流源驱动器并由存储在可编程电流源驱动器中的波形控制。 多个MOSFET耦合到可编程电流源驱动器。 第一耦合电感器连接到多个高压MOSFET。 传感器耦合到第一耦合电感器。

公开(公告)号：US20130187697A1

公开(公告)日：2013-07-25

申请号：US13355749

申请日：2012-01-23

Applicant: Ben Choy ,  Ching Chu

Inventor： Ben Choy ,  Ching Chu

IPC: H03K3/00

CPC classification number: H03F3/2173 ,  B06B1/0215 ,  B06B2201/76 ,  G01S7/5202 ,  H03K17/6872

Abstract: A multi-level high-voltage pulse generator integrated circuit has a digital logic-level control interface circuit. A pair of complementary MOSFETs is controlled by the digital control interface circuit. A pair of supply voltage rails is provided, wherein one of the pair of supply voltage rails is connected to each of the pair of complementary MOSFETs. A pair of Zener diodes is provided, wherein one of the pair of Zener diodes is connected to each of the pair of complementary MOSFETs. A pair of resistors is provided, wherein one of the pair of resistors is connected in parallel with each of the pair of Zener diodes. A pair of complementary voltage blocking-MOSFETs having predetermined gate bias voltages is provided, wherein each of the pair complementary voltage blocking-MOSFETs is attached to a corresponding one pair of complementary MOSFETs.

Abstract translation: 多级高压脉冲发生器集成电路具有数字逻辑电平控制接口电路。 一对互补MOSFET由数字控制接口电路控制。 提供一对电源电压轨，其中一对电源电压轨之一连接到该对互补MOSFET中的每一对。 提供了一对齐纳二极管，其中一对齐纳二极管中的一个连接到该对互补MOSFET中的每一对。 提供一对电阻器，其中一对电阻器中的一个电阻器与该对齐纳二极管中的每一个并联连接。 提供了具有预定栅极偏置电压的一对互补电压阻挡MOSFET，其中每对互补电压阻挡MOSFET被附接到相应的一对互补MOSFET。

公开(公告)号：US5900552A

公开(公告)日：1999-05-04

申请号：US828441

申请日：1997-03-28

Applicant: Ching Chu ,  Neil D. Roiland

Inventor： Ching Chu ,  Neil D. Roiland

IPC: B06B1/06 ,  G01N29/024 ,  G01N29/22 ,  G01H3/00 ,  G01N29/02

CPC classification number: B06B1/0655 ,  G01N29/024 ,  G01N29/222

Abstract: An ultrasonic transducer is disclosed for emitting an ultrasonic wave radially inward. The transducer is constructed with a strip of piezoelectric material laminated with a pair of electrically conductive metal layers that are conductively isolated from one another. In a preferred embodiment, the strip of piezoelectric material is formed in a cylindrical shape and with continuous sinusoidal ripples along the circumference. The sinusoidal ripples are designed to emit a specific wave length of a desired frequency. The radius of the sinusoidal wave is based on material characteristics and the desired resonance frequency. The invention discloses various methods and apparatus for constructing and maintaining the transducer sinusoidal shape. One method includes attachment of a pair of rigid end caps on the laminated piezoelectric material, and another discloses weaving the laminated piezoelectric material through a nonconductive mesh cage, and yet another includes adhesively attaching the transducer to a housing. The invention also includes an application of the above described transducers in a gas analyzer having an internal chamber in which the transducer is arranged. The method of analyzing gas includes passing the gas through the internal chamber and across the surface of the transducer, energizing the transducer to emit an ultrasonic wave into the passing gas toward the center of the transducer. The ultrasonic wave is reflected from a pressure center and sensed by the same transducer that emitted the wave. The invention also includes a method of manufacturing the transducer with sinusoidal ripples to accomplish an emission of desired frequency.

Abstract translation: 公开了一种用于径向向内发射超声波的超声换能器。 传感器由一层压电材料构成，其压电材料层叠有彼此导电隔离的一对导电金属层。 在优选实施例中，压电材料条形成为圆柱形，并沿着圆周形成连续的正弦波纹。 正弦波纹被设计成发射所需频率的特定波长。 正弦波的半径基于材料特性和所需的共振频率。 本发明公开了用于构造和保持换能器正弦形状的各种方法和装置。 一种方法包括将一对刚性端盖安装在层压压电材料上，另一种方法公开了通过非导电网笼编织层压压电材料，另一种方法包括将换能器粘附到外壳上。 本发明还包括将上述换能器应用于具有其中布置有换能器的内部腔室的气体分析器。 分析气体的方法包括使气体通过内部腔室并穿过换能器的表面，激励换能器，将超声波发射到换能器中心的通过气体中。 超声波从压力中心反射并由发射波的相同换能器感测。 本发明还包括制造具有正弦波纹的换能器以实现期望频率的发射的方法。

公开(公告)号：US5485264A

公开(公告)日：1996-01-16

申请号：US166546

申请日：1993-12-14

Applicant: Ching Chu ,  Mike VanderWindt

Inventor： Ching Chu ,  Mike VanderWindt

IPC: G01M11/00 ,  G01N21/88

CPC classification number: G01M11/3145

Abstract: An OTDR stores data samples in a predetermined sequence in a memory. Data is read from and written to the memory in the predetermined sequence by application of successive control signals. The stored data is read, added to a correlated sample of a new signal and the result stored to maintain the predetermined sequence of samples. Successive tests thus accumulate samples in sequence to provide an indication of the variation of the signal as the light pulse passes along the fiber under tests.

Abstract translation: OTDR以预定的顺序将数据样本存储在存储器中。 通过应用连续的控制信号，以预定的顺序读取和写入数据。 读取存储的数据，将其添加到新信号的相关样本，并存储结果以维持预定的样本序列。 因此，连续测试按顺序累积样本，以提供当光脉冲沿着被测光纤通过时的信号变化的指示。

公开(公告)号：US5465143A

公开(公告)日：1995-11-07

申请号：US186966

申请日：1994-01-27

Applicant: Ching Chu ,  David Liao ,  Kai D. Feng

Inventor： Ching Chu ,  David Liao ,  Kai D. Feng

IPC: G01M11/00 ,  G01N21/88

CPC classification number: G01M11/3145

Abstract: An OTDR to examine light reflected from an optic fibre has an amplification stage that operates in either a high gain or low gain mode. To avoid saturation of the amplifier in the high gain mode, the trace is examined to identify the location of spikes and a switch is controlled to connect the amplifier to the signal after the occurrence of the spike.

Abstract translation: 检查从光纤反射的光的OTDR具有以高增益或低增益模式工作的放大级。 为了避免放大器在高增益模式下饱和，检查迹线以识别尖峰的位置，并且控制开关以在发生尖峰之后将放大器连接到信号。

公开(公告)号：US5184002A

公开(公告)日：1993-02-02

申请号：US735669

申请日：1991-07-26

Applicant: Ching Chu

Inventor： Ching Chu

IPC: G02B26/10

CPC classification number: G02B26/10

Abstract: An optical scanner has focusing elements rotatable about a fixed axis. The elements are each mounted on a flexible radially extending suspension arm. A magnet is carried by each arm and passes a coil extending along the path of the elements. Current to the coil is controlled to induce movement of the arm in a direction parallel to the axis of rotation and effect focusing of the elements.

Abstract translation: 光学扫描器具有可围绕固定轴线旋转的聚焦元件。 这些元件各自安装在柔性的径向延伸的悬挂臂上。 磁铁由各个手臂承载，并通过沿元件的路径延伸的线圈。 控制到线圈的电流以引起臂在平行于旋转轴线的方向上的移动并且实现元件的聚焦。

公开(公告)号：US20150070034A1

公开(公告)日：2015-03-12

申请号：US14021910

申请日：2013-09-09

Applicant: Ching Chu ,  Ben Choy ,  Andy Tu

Inventor： Ching Chu ,  Ben Choy ,  Andy Tu

IPC: G01R27/26

CPC classification number: H03K5/1536 ,  G01R19/175

Abstract: A capacitive parametric zero crossing detection circuit has a nonlinear voltage controlled capacitive device coupled to an input voltage to convert a zero crossing current pulse into zero crossing voltage signal.

Abstract translation: 电容参数过零检测电路具有耦合到输入电压的非线性压控电容器件，以将过零电流脉冲转换为过零电压信号。

公开(公告)号：US20150049577A1

公开(公告)日：2015-02-19

申请号：US13965490

申请日：2013-08-13

Applicant: Benedict C.K. Choy ,  Ching Chu ,  Andy Tu

Inventor： Benedict C.K. Choy ,  Ching Chu ,  Andy Tu

IPC: H03K17/16 ,  G01S7/52

CPC classification number: G01S7/52017

Abstract: An ultrasound image system has a plurality of channels. At least one of the plurality of channels has a capacitive T/R switch.

Abstract translation: 超声图像系统具有多个通道。 多个通道中的至少一个具有电容性T / R开关。