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    • 2. 发明专利
    • Method and device for controlling blanking coil
    • 用于控制卷芯线圈的方法和装置
    • JP2009216740A
    • 2009-09-24
    • JP2008057183
    • 2008-03-07
    • Jeol Ltd日本電子株式会社
    • MUTO MASAO
    • G03F7/20H01J37/305H01L21/027
    • PROBLEM TO BE SOLVED: To provide a method and a device for controlling a blanking coil which decrease the blanking-off period and thereby decrease the total period of blanking-on/off.
      SOLUTION: The device for controlling a blanking coil, to be used in a charge particle beam drawing device for drawing a pattern on a drawing medium with a charged particle beam, comprises: a pair of coils L1, L2 provided for blanking; a pair of drive circuits 10, 11 applying a current to the coils; D/A converters 1, 2 provided in input sections of the drive circuits; a control CPU 4 setting digital values on the D/A converts; a differential amplification circuit for extracting the difference current in the currents applied to the pair of coils L1, L2; and an A/D converter converting the output of the differential amplification circuit into a digital value, and sends the output of the A/D converter 3 to the control CPU 4.
      COPYRIGHT: (C)2009,JPO&INPIT
    • 要解决的问题:提供一种用于控制消隐线圈的方法和装置,其减少消隐期,从而减少消隐开/关的总周期。 解决方案:用于控制用于在具有带电粒子束的绘图介质上绘制图案的电荷粒子束描绘装置中的消隐线圈的装置包括:一对线圈L1,L2,用于消隐; 一对驱动电路10,11向线圈施加电流; 设置在驱动电路的输入部分中的D / A转换器1,2; 在D / A转换器上设置数字值的控制CPU 4; 用于提取施加到所述一对线圈L1,L2的电流中的差动电流的差分放大电路; 以及将差分放大电路的输出转换为数字值的A / D转换器,将A / D转换器3的输出发送到控制CPU 4.版权所有(C)2009,JPO&INPIT
    • 4. 发明专利
    • DRIVING DEVICE WITH DC MOTOR
    • JPH04149941A
    • 1992-05-22
    • JP27574890
    • 1990-10-15
    • JEOL LTD
    • ISHIBASHI TAMOTSUMUTO MASAOMORI SEIICHIRO
    • H01J37/20H02P7/29
    • PURPOSE:To invariably drive a driven body in response to an action quantity by controlling the pulse width of the drive signal to a DC motor based on the signal on the rotation angle so that the driven body is driven by the same distance for the unit action of a drive indicator. CONSTITUTION:When a drive indicator 17 is operated to indicate the shift of a stage 7, a gate circuit 11 is opened while pulses are fed from the indicator 17, and pulse signals from an oscillator 10 are fed to a drive pulse generating circuit 12. Signals indicating the rotation of a DC motor 14 from a rotary encoder 15 are fed to a pulse width control signal generating circuit 16. The circuit 16 counts the signals from the encoder 15 to form a signal indicating the rotation angle from the reference of a lever body. The circuit 16 specifies the address based on the signal, the pulse specified signal on the angle is read out, the width of the drive pulse generated by the circuit 12 is controlled, drive pulses with a different width are fed to the motor 14, and the stage 7 is moved by the quantity corresponding to the action quantity of the indicator 17.
    • 6. 发明专利
    • DRIVING DEVICE FOR DEFLECTOR IN ELECTRON MICROSCOPE AND THE LIKE
    • JPH0696708A
    • 1994-04-08
    • JP10690792
    • 1992-04-24
    • JEOL LTD
    • MUTO MASAO
    • H01J37/147
    • PURPOSE:To simultaneously switch a main deflector at the time of performing the switching of a shift operation and a tilt operation in the deflector of an electron microscope and the like for performing the switching of a shift operation and a tilt operation with a two-stage deflector. CONSTITUTION:This device is provided with a first switching means S1, S2 for attenuating an exciting current flowing through a first deflector D1 in accordance with a parameter set by a first interlocking data setting means 5, 6 and then adding it to the exciting current of a second deflector D2 to supply and a second switching means S3, S4 for attenuating the exciting current flowing through the second deflector D2 in accordance with a parameter set by a second interlocking data setting means 7, 8 and then adding it to the exciting current of the first deflector D1 to supply. Either one of the first switching means or the second switching means is selectively operated, thereby making it possible to reverse the interlocking relationship between the first deflector and the second deflector.
    • 7. 发明专利
    • ELECTRON MICROSCOPE
    • JPH05225938A
    • 1993-09-03
    • JP5687192
    • 1992-02-07
    • JEOL LTD
    • MUTO MASAO
    • H01J37/09H01J37/22H01J37/26
    • PURPOSE:To provide an electron microscope which is provided with a shutter device small and simple in structure and able to prevent the generation of vibration even when the shutter blade is driven. CONSTITUTION:A voltage is applied to a piezo-electric element 6 from a piezo-electric element driving circuit 8 in response to a control signal from a control circuit 9 to bend the piezo-electric element 6 so that a lever body 3 moves to the right by a very small quantity. The movement is magnified by rotation of the lever body 3 around a pin 4 and then transmitted to a shutter blade 5, which makes the action of closing an electron beam passing hole 2. When a reverse voltage is applied to the piezo-electric element 6, the element 6 is deformed in a reverse direction to open the electron beam passing hole 2 so that photographing is performed to provide an image of good quality since this device is small and vibration is not brought with the opening and closing operation of the shutter blade 5.
    • 8. 发明专利
    • SAMPLE TRANSFER DEVICE AND METHOD FOR ELECTRON MICROSCOPE
    • JPH11233056A
    • 1999-08-27
    • JP4454898
    • 1998-02-10
    • JEOL LTD
    • MUTO MASAO
    • H01J37/20
    • PROBLEM TO BE SOLVED: To operate a motor by the most suitable driving pulse for a position where a sample is transferred. SOLUTION: A drive command pulse is sent to a pulse generating circuit 26 from a controller 25. The pulse generating circuit 26 generates a driving pulse with the maximum pulse width based on the drive command pulse, and supply it to a motor driving circuit 27. When a torque for a position where a sample is transferred is big, the motor is not immediately operated by the driving pulse, and it starts operating after a considerable delay. An encoder 24 generates an encoder signal after a considerable delay from a rise of the driving pulse. The encoder signal is fed back to the pulse generating circuit 26, and a part of the driving pulse generated after a rise of the encoder signal is cancelled. The pulse generating circuit 26 is narrower than the driving pulse, however it generates a driving pulse with a big width capable of coping with transfer to a position requiring a big torque.