公开(公告)号：US09651444B2

公开(公告)日：2017-05-16

申请号：US14134006

申请日：2013-12-19

申请人： Genglin Wang ,  Ningbo Li ,  Fei Li

发明人： Genglin Wang ,  Ningbo Li ,  Fei Li

IPC分类号： G01N31/00 ,  G01M3/00 ,  G01M3/20

CPC分类号： G01M3/00 ,  G01M3/202

摘要： The present invention discloses a method of cumulative helium mass spectrometric combination test by using argon gas as gross-leak tracer gas, and specifically gives the procedure for this gross-leak and fine-leak combination test, comprising steps and methods of selecting helium-argon prefilling method or helium-argon pressuring method, fixed or flexible scheme and the criterion RAr0max for argon measured leak rate of gross-leak test according to the rigour grade THemin, cavity volume, leak rate of surficially absorbed helium and argon and the history of the test of a component under test; designing time for pressuring of helium-argon pressuring method, the maximum test-waiting time of fine-leak test and the criterion for helium measured leak rate, helium-argon prefilling and helium-argon pressuring, removing absorbed helium and argon gas, gross-leak test, fine-leak test and complementally testing bigger gross leak, which enhances the sensitivity of gross-leak test, lengthens the maximum test-waiting time of fine-leak test, tremendously expands the range of adapted cavity volume and criterion for measured leak rate of fine-leak test, thus making the cumulative helium mass spectrometric combination test more applicable, convenient and practical.

公开(公告)号：US09030106B2

公开(公告)日：2015-05-12

申请号：US13379887

申请日：2011-12-02

申请人： Fei Li

发明人： Fei Li

IPC分类号： H05B37/00 ,  H05B33/08

CPC分类号： H05B33/0851

摘要： A driving circuit for a LED backlight module includes a brightness adjusting module, a current detector, a reference voltage adjusting module, and a comparing module. The current detector is capable of detecting the current of the brightness adjusting module and outputting a detecting result. The reference voltage adjusting module is capable of choosing the corresponding reference voltage corresponding to the detecting result of the current detector. Thus, the reference voltage outputted to the comparing module can be adjusted according to the change of the current of the brightness adjusting module. This reduces the power consumption and the amount of heat generated due to the power consumption, and improves the performance of the LED backlight module.

摘要翻译： LED背光模块的驱动电路包括亮度调节模块，电流检测器，参考电压调节模块和比较模块。 电流检测器能够检测亮度调节模块的电流并输出检测结果。 参考电压调节模块能够根据电流检测器的检测结果选择相应的参考电压。 因此，可以根据亮度调整模块的电流的变化来调整输出到比较模块的参考电压。 这降低了由于功耗而产生的功率消耗和热量，并且提高了LED背光模块的性能。

公开(公告)号：US09017332B2

公开(公告)日：2015-04-28

申请号：US13823065

申请日：2011-09-15

申请人： Lei Ye ,  Jian Zhou ,  Hua Feng ,  Fei Li ,  Hengyang Zhu ,  Congxiao Li

发明人： Lei Ye ,  Jian Zhou ,  Hua Feng ,  Fei Li ,  Hengyang Zhu ,  Congxiao Li

IPC分类号： A61B17/00 ,  A61B17/16 ,  A61B17/32

CPC分类号： A61B17/16 ,  A61B17/162 ,  A61B17/1622 ,  A61B17/1624 ,  A61B17/32002 ,  A61B2017/1602

摘要： A surgical milling cutter includes a milling cutter holder, a locking device, a locking seat, and a main machine. The milling cutter holder includes a fixing seat with a through hole. A finger guider with an L-type holder on a top end thereof is arranged at an upper part of the fixing seat. A distal end of a short side of the L-type holder is disposed with a downward projection, and a lowest point of the projection is lower than that of a cylindrical head when the milling cutter works normally. A bolt with a central through hole is fixed in a cavity of the finger guider. A pressing disk is arranged at the upper part of the fixing seat, and a nut is connected to the bolt through a hole in the pressing disk.

摘要翻译： 外科铣刀包括铣刀保持器，锁定装置，锁定座和主机。 铣刀架包括具有通孔的固定座。 在固定座的上部设置有在其顶端具有L型保持器的手指导杆。 L型保持器的短边的远端设置有向下的突起，并且当铣刀正常工作时，突起的最低点低于圆柱形头的最低点。 具有中心通孔的螺栓固定在手指导板的空腔中。 按压盘设置在固定座的上部，螺母通过按压盘上的孔连接到螺栓上。

公开(公告)号：US20150054859A1

公开(公告)日：2015-02-26

申请号：US13380883

申请日：2011-12-16

申请人： Xiang Yang ,  Fei Li

发明人： Xiang Yang ,  Fei Li

IPC分类号： G09G3/34 ,  G09G3/36

CPC分类号： G09G3/3406 ,  G09G3/3648 ,  G09G2320/062 ,  G09G2320/0626 ,  H05B33/0818 ,  Y02B20/346

摘要： The present invention provides a driving circuit and a driving method for light-emitting diodes (LEDs), and a display apparatus using the same. The driving circuit comprises a power switch and a dimmer circuit. The method comprising: providing a pulse width modulation (PWM) dimming signal and a high frequency dimming signal; and multiplying the PWM dimming signal and the high frequency dimming signal for providing a driving signal to the power switch. The present invention can improve a dimming effect of the LEDs.

摘要翻译： 本发明提供了一种用于发光二极管（LED）的驱动电路和驱动方法，以及使用该驱动电路和驱动方法的显示装置。 驱动电路包括电源开关和调光电路。 该方法包括：提供脉宽调制（PWM）调光信号和高频调光信号; 并且将PWM调光信号和高频调光信号相乘，以向驱动开关提供驱动信号。 本发明可以改善LED的调光效果。

公开(公告)号：US20150042233A1

公开(公告)日：2015-02-12

申请号：US14112545

申请日：2013-08-14

申请人： Hua Zhang ,  Fei Li

发明人： Hua Zhang ,  Fei Li

IPC分类号： G09G3/34

CPC分类号： G09G3/3426 ,  G09G2330/02 ,  G09G2330/06 ,  H05B33/0815

摘要： The present invention proposes an LED backlight driving circuit comprises voltage booster circuits parallelly connected and a constant current driving IC module. The voltage booster circuits are used for conversing an input voltage into a needed output voltage to supply to an LED unit. The constant current driving IC module is used for controlling the voltage booster circuits, so that the voltage booster circuits converse the input voltage into the needed output voltage to supply to the LED unit, driving the LED unit in a constant current. The constant current driving IC module generates driving signals at different frequencies to control the voltage booster circuits respectively. The invention can set up multiple driving signals operating simultaneously at different frequencies respectively and disperse resulting harmonic wave, hence reduce EMI signals of the backlight driving circuit effectively. The present invention also proposes an LCD using the LED backlight driving circuit.

摘要翻译： 本发明提出一种LED背光驱动电路，包括并联电压升压电路和恒流驱动IC模块。 升压电路用于将输入电压转换成所需的输出电压以供应给LED单元。 恒流驱动IC模块用于控制升压电路，使得升压电路将输入电压转换成所需的输出电压，以供给LED单元，以恒定电流驱动LED单元。 恒流驱动IC模块分别产生不同频率的驱动信号，分别控制升压电路。 本发明可以设置分别在不同频率同时工作的多个驱动信号并分散所产生的谐波，从而有效降低背光驱动电路的EMI信号。 本发明还提出了一种使用LED背光驱动电路的LCD。

公开(公告)号：US08742167B2

公开(公告)日：2014-06-03

申请号：US12811477

申请日：2009-01-08

申请人： Ying Liu ,  Quanhai Liu ,  Yan Qin ,  Tong Wu ,  Zhiru Xu ,  Min-yu Liu ,  Fei Li ,  Yan Li ,  Michael J. Newman

发明人： Ying Liu ,  Quanhai Liu ,  Yan Qin ,  Tong Wu ,  Zhiru Xu ,  Min-yu Liu ,  Fei Li ,  Yan Li ,  Michael J. Newman

IPC分类号： C07C61/29

CPC分类号： C07J63/008

摘要： A highly pure asiaticoside and a pharmaceutical grade asiatic acid can be prepared, along with salts of asiatic acid, for use in formulating therapeutic compositions that are suitable for treating arthritis, psoriasis and other inflammatory diseases, as well as pulmonary fibrosis, diabetic nephropathy, and other fibrotic diseases.

摘要翻译： 可以制备高纯度积雪草苷和药物级积雪草酸以及积雪草酸盐，用于配制适合于治疗关节炎，牛皮癣和其它炎性疾病以及肺纤维化，糖尿病性肾病和 其他纤维化疾病。

公开(公告)号：US08736238B2

公开(公告)日：2014-05-27

申请号：US12925336

申请日：2010-10-19

申请人： Fei Li ,  Hongjian Gan ,  Fei Ji ,  Xin Li

发明人： Fei Li ,  Hongjian Gan ,  Fei Ji ,  Xin Li

IPC分类号： H02M3/02

CPC分类号： H02M1/32 ,  H02M2001/0032 ,  Y02B70/16 ,  Y10T307/391

摘要： The configurations of a buck type and a buck/boost type converter systems and a controlling method thereof are provided in the present invention. The proposed buck/boost type converter system includes a rectifier bridge, a first auxiliary circuit including a first unidirectional switch coupled to the rectifier bridge and a second unidirectional switch coupled to the first unidirectional switch, a first capacitor coupled to the first unidirectional switch and the rectifier bridge, a buck/boost converter having a first input terminal coupled to the first unidirectional switch, a second input terminal coupled to the first capacitor, a first output terminal coupled to the second unidirectional switch and a second output terminal, a second capacitor electrically connected to the first and the second output terminals in parallel, and a DC source coupled to the second unidirectional switch.

摘要翻译： 在本发明中提供了降压型和降压型/升压型转换器系统的结构及其控制方法。 所提出的降压/升压型转换器系统包括整流桥，第一辅助电路，包括耦合到整流桥的第一单向开关和耦合到第一单向开关的第二单向开关，耦合到第一单向开关的第一电容器和 整流桥，具有耦合到第一单向开关的第一输入端的降压/升压转换器，耦合到第一电容器的第二输入端子，耦合到第二单向开关的第一输出端子和第二输出端子，第二电容器电 并联连接到第一和第二输出端子以及耦合到第二单向开关的DC源。

公开(公告)号：US20140132161A1

公开(公告)日：2014-05-15

申请号：US13807719

申请日：2012-11-22

申请人： Hua Zhang ,  Fei Li

发明人： Hua Zhang ,  Fei Li

IPC分类号： H05B37/02

CPC分类号： H05B33/0827

摘要： The present invention provides a method for using a constant current driving chip to generate different currents to drive light bars and a driving circuit thereof. The method includes (1) providing LED light bars, a constant current driving chip, resistors having different resistances, and first and second power sources, wherein the driving chip has light bar connection terminals, resistor connection terminals, a power connection terminal, and a power grounding line connection terminal; (2) connecting positive and negative terminals of each LED light bar to the first power source and the light bar connection terminals; (3) connecting ends of each resistor to the resistor connection terminals and the grounding line; and (4) connecting the power connection terminal and the power grounding line connection terminal of the driving chip to the second power source and activating the power sources to drive the LED light bars to give off lights of different illuminations.

摘要翻译： 本发明提供一种使用恒流驱动芯片产生不同电流来驱动光棒的方法及其驱动电路。 该方法包括（1）提供LED灯条，恒流驱动芯片，具有不同电阻的电阻器以及第一和第二电源，其中驱动芯片具有灯条连接端子，电阻器连接端子，电源连接端子和 电源接地线接线端子; （2）将每个LED灯条的正负端子连接到第一电源和灯条连接端子; （3）将每个电阻的端子连接到电阻器连接端子和接地线; 和（4）将驱动芯片的电源连接端子和电源接地线连接端子连接到第二电源，激活电源驱动LED灯条发出不同照明的灯。

公开(公告)号：US08624512B2

公开(公告)日：2014-01-07

申请号：US13380896

申请日：2011-10-27

申请人： Fei Li

发明人： Fei Li

IPC分类号： H05B37/00

CPC分类号： H05B33/0827

摘要： The circuit eliminating threshold voltage differences between backlight LED strings includes a voltage supply input, a number of first switching units, and a number of LED strings. The LED strings are connected to each other in parallel, and one end of each LED string is connected to the voltage supply input and the other end thereof is connected to the corresponding first switching unit. The constant current controller includes a constant current source for supplying a constant current to each LED string, a current detector for detecting a working current of each LED string, a comparator for comparing the working current of each LED string and the constant current, and outputting a comparing result, and a square wave generator for outputting driving signals of different frequencies each which is capable of driving the corresponding LED string to work at the corresponding frequency.

摘要翻译： 消除背光LED串之间的阈值电压差的电路包括电压源输入，多个第一开关单元和多个LED串。 LED串彼此并联连接，并且每个LED串的一端连接到电压源输入端，并且其另一端连接到对应的第一开关单元。 恒流控制器包括用于向每个LED串提供恒定电流的恒流源，用于检测每个LED串的工作电流的电流检测器，用于比较每个LED串的工作电流和恒定电流的比较器，以及输出 比较结果，以及用于输出能够驱动相应的LED串以相应频率工作的不同频率的驱动信号的方波发生器。

公开(公告)号：US20130322059A1

公开(公告)日：2013-12-05

申请号：US13521712

申请日：2012-06-11

申请人： Xinming Gao ,  Fei Li ,  Xiang Yang

发明人： Xinming Gao ,  Fei Li ,  Xiang Yang

IPC分类号： G09F13/04 ,  F21L4/02

CPC分类号： G09F13/04 ,  G02F1/133603 ,  H05B33/0827

摘要： The present invention provides an LED backlight system and display device. Backlight system includes power source module, LED array, master switch module, current detection module, current equalizer module and current shunt module. LED array is connected to power source module and includes LED strings with common anode. Master switch module includes first switch transistors for receiving switch control PWM signal of LED strings. Current detection module outputs current feedback signals corresponding to currents of LED strings. Current equalizer module is connected to current detection and includes equalizer control unit and equalizer switch unit. Based on current feedback signal, equalizer control unit controls on-and-off of equalizer switch unit. Current shunt module is connected in parallel with current equalizer module and performs current shunt on current equalizer module. As such, the present invention reduces energy-consumption of current equalizer module and temperature of LED drive chip.

摘要翻译： 本发明提供一种LED背光系统和显示装置。 背光系统包括电源模块，LED阵列，主开关模块，电流检测模块，电流均衡模块和电流分流模块。 LED阵列连接到电源模块，并包括带有阳极的LED串。 主开关模块包括用于接收LED串的开关控制PWM信号的第一开关晶体管。 电流检测模块输出与LED串电流相对应的电流反馈信号。 电流均衡器模块连接到电流检测，包括均衡器控制单元和均衡器开关单元。 基于电流反馈信号，均衡器控制单元控制均衡器开关单元的导通和关断。 电流分流模块与电流均衡器模块并联连接，并对电流均衡模块进行电流分流。 因此，本发明降低了电流均衡器模块的能量消耗和LED驱动芯片的温度。