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    • 5. 发明专利
    • MATRIX TYPE IMAGE DISPLAY DEVICE
    • JPH10253941A
    • 1998-09-25
    • JP5890497
    • 1997-03-13
    • HITACHI LTD
    • HATANO MUTSUKOAKIMOTO HAJIMENAKAHARA HITOSHI
    • G02F1/133G09G3/36
    • PROBLEM TO BE SOLVED: To provide a high resolution and large-sized matrix type display device capable of inputting a high resolution display signal to respective pixels even during a short display signal input time. SOLUTION: Each display pixel circuit 14 is provided with a D/A converter 22, and a TN liquid crystal capacitor 23 is connected to the output of the D/A converter 22, and the output of a latch is connected to the input. The timing input of the latch 21 is connected to a Y drive circuit 15 through a gate line 11, and the data input of the latch 21 is connected to an X drive circuit 16 through a data bus 12. The other end of the TN capacitor 23 is connected to a common electrode 24. The Y drive circuit 15 selects successively the gate line of respective rows according to a clock 17 inputted from a control circuit 19 to set it in a high voltage level. A digital display signal is inputted to the X drive circuit 16 through a digital input line 18, and to be outputted to the data bus 12 at every row when digital display signals by one row are collected.
    • 6. 发明专利
    • SCANNING REFLECTING ELECTRON DIFFRACTION MICROSCOPE
    • JPH0945272A
    • 1997-02-14
    • JP19726095
    • 1995-08-02
    • HITACHI LTD
    • NAKAHARA HITOSHI
    • H01J37/29
    • PROBLEM TO BE SOLVED: To make necessary measurements of a sample whose surface crystal structure varies from one part to another by combining detection signals from a plurality of electron-ray detecting electrodes, and transmitting them to a scanning electron microscope display circuit. SOLUTION: Electron-ray detecting electrodes comprise a plurality of concentric detecting electrodes 301, a shield electrode 300 for preventing the entrance of extra electron rays from the outside, and an insulating material 302 for electrically insulating these electrodes from one another. Signals from each electrode are guided out of a vacuum by a shielding wire 303 and preamplified by a signal amplifier 206. The signals amplified are selected by a changeover switch 210 and fed to a scanning electron microscope display circuit 202. This scanning reflecting electron diffraction microscope has an electron mirror which produces a converging electron ray with an applied voltage of not less than 5KV, a sample stage which can be adjusted so that the converging electron ray is at a glancing angle of not more than 10 deg. to the sample, and an incident electron ray scan mechanism capable of scanning an incident position on the sample.
    • 7. 发明专利
    • SPECTRAL EQUIPMENT
    • JPH0933545A
    • 1997-02-07
    • JP18528695
    • 1995-07-21
    • HITACHI LTD
    • KIMURA YOSHINOBUNAKAGAWA KIYOKAZUNISHIDA AKIONAKAHARA HITOSHI
    • G01N37/00G01N21/27G01Q30/02G01Q60/00G01Q60/10
    • PROBLEM TO BE SOLVED: To obtain a reflection spectrum of a local area by a sample electric field by impressing a bias voltage between a sample and a probe fitted to a displacement element so that the probe can be made to approach the surface of the sample. SOLUTION: A bias voltage of several volts is impressed between a probe 11 fitted to a displacement element 12 for Z movement and a sample 18 by a power source 14 so as to make the element 12 operate and thereby the probe 11 is made to approach the sample 18. A current between the probe 11 and the sample 18 being monitored, on the occasion, the probe 11 is made to approach until a tunnel current flows between the sample 18 and the probe 11. Since the bias voltage is fixed, a distance of 1nm or less is known from the relationship between the value of the voltage impressed on the element 12 and the amplitude of the tunnel current. Thereby making determination of an impressed electric field of the sample, which has been difficult heretofore. On the other hand, light of a light source 15 is made monochromatic by a monochromator 16 and reflected on the surface of the sample 18. A light- sensitive detector 17 measures the reflected light and a reflection spectrum of a local area by the sample electric field is obtained.
    • 10. 发明专利
    • EPITAXY METHOD FOR SURFACE CONTROL
    • JPH0547659A
    • 1993-02-26
    • JP20277691
    • 1991-08-13
    • HITACHI LTD
    • NAKAHARA HITOSHIICHIKAWA MASAKAZU
    • C30B23/08H01L21/20
    • PURPOSE:To provide crystallinity of a grown film and to reduce a temperature of a process by vapor-depositing predetermined substance of a thickness of one atom layer or less before deposition substance is vapor-deposited on a silicon substrate. CONSTITUTION:A silicon substrate 5 is momentarily heated to 1470K by a sample heating power source 8, then heated at 1170K, and surface-cleaned. Then, a gallium deposition source 7 is heated by a power source 10, and gallium (catalytic substance) is vapor-deposited at a 1/3 atom layer on the substrate 5 at the ambient temperature. Thereafter, the substrate 5 is heated at 920K, and a 3 X3 structure (catalytic layer) of an alloy state of silicon and gallium is formed. Then, while substrate 5 is being held at 600K, a silicon deposition source 6 is heated by a heating power source 9 to evaporate silicon, and the silicon is epitaxially grown. The catalytic substance is a substance having 670K or lower of a melting point and 50nm or more of surface segregation coefficient to the silicon at 670K. Thus, a thin film having excellent crystallinity even at a low temperature of 770K or lower of a substrate temperature is obtained.