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    • 2. 发明专利
    • ELECTRONIC DEVICE
    • JPS60243715A
    • 1985-12-03
    • JP22216384
    • 1984-10-24
    • HITACHI LTD
    • YAMASHIRO OSAMUYOU KANJI
    • H03F3/45G05F1/56G05F3/24H01L21/822H01L27/04
    • PURPOSE:To obtain a reference voltage generator reduced at its temperature change by using Fermi levels of two IGFETs having different conductive types of silicon gate electrodes to form a reference voltage source. CONSTITUTION:A P -gate MOSFETQ1 and an N -gate MOSFETQ2 constituting a differential pair are constituted so that their conductance values are equal. If it is defined that the current values of a constant current source for the differential circuit are I0-I''0, the intersected points 1-1'' of the current values I0-I''0 with the FETQ1 and the intersected points 2-2'' with the FETQ2 show respective gate voltages VG1, VG2 obtained when the differential circuit is balanced. Even if the current of the constant current source is changed from I0 to I'0 and I''0, the differential voltage between said gate a voltages VG1 and VG2 is kept at a constant level and the difference Vth1-Vth2 between the threshold voltages of the FETs Q1 and Q2 appears as it is. Consequently, the P -gate and N -gate FETs Q1, Q2 can be used, a reference Voltage corresponding to a band gap is obtained and the temperature characteristics can be set up to ''0''.
    • 3. 发明专利
    • SEMICONDUCTOR INTEGRATED CIRCUIT DEVICE
    • JPS6057660A
    • 1985-04-03
    • JP16497583
    • 1983-09-09
    • HITACHI LTD
    • YOU KANJI
    • H01L29/78H01L21/8249H01L27/06H01L27/07
    • PURPOSE:To contrive accomplishment of high integration by a method wherein a bipolar transistor and one FET of CMIS (complementary metal insulator semiconductor) are provided on the same Si substrate, thereby enabling to unnecessitate an insulation isolation region and to have a wiring connection region used common for a bipolar device and the FET. CONSTITUTION:The N layer 6 on a P type Si substrate 5 is surrounded by an N buried layer 7 and a P layer 9, and its surface is siolated by an oxide film 8. P-bases 12 (B1 and B2), a P connection layer 13, and N emitters 14 (E1 and E2) are provided on one island region, an N connection layer 11 is formed on the N layer (collectors C1 and C2), the source S1 and the drain D1 of a P layer 16 are provided, and bipolar transistors T1 and T2 and a P-ch MISFET Q1 is formed. At this time, an isolation layer is unnecessitated between both materials above-mentioned, and the degree of integration can be improved. When a well 17 is provided on another island and an N-ch MISFET Q2 is provided using an N layer 18 as a source S2 and a drain D2, no latch-up phenomenon is generated on the FETs Q1 and Q2, and a circuit 3 is protected by providing a poly Si resistor R between an external terminal 1 and an input buffer circuit 3. An oxide film 10, an electrode wiring T and a PSG20 are formed and the titled device is completed.
    • 8. 发明专利
    • Semiconductor integrated circuit device
    • 半导体集成电路设备
    • JPS6121515A
    • 1986-01-30
    • JP20176684
    • 1984-09-28
    • Hitachi Ltd
    • YOU KANJIYAMASHIRO OSAMU
    • G05F3/24
    • G05F3/245
    • PURPOSE:To attain generation of a reference voltage with less fluctuation due to temperature change by constituting an MOS diode where a drain and a gate are connected in common by an MISFET so as to attain ease of design and mass- production of an electronic circuit. CONSTITUTION:T1, T2 are MISFETs to constitute the MOS diode where the drain and gate are connected in common. Further, the T1, T2 have different threshold voltages and nearly equal mutual conductances and a difference of the threshold voltage is extracted by taking the difference of drain voltages V1, V2. Moreover, the difference of the Fermi level of N and P channel semiconductors nearly equal to the difference of the threshold voltages is extracted by using an N gate MOS and a P gate MOS. Thus, the design and mass-production of the electronic circuit is attained easily and a reference voltage where the fluctuation of voltage and temperature change is small is generated.
    • 目的:通过构成通过MISFET共同连接漏极和栅极的MOS二极管来实现由于温度变化而产生具有较小波动的参考电压,从而实现电子电路的设计和大规模生产。 构成:T1,T2是构成MOS二极管的MISFET,漏极和栅极共同连接。 此外,T1,T2具有不同的阈值电压和几乎相等的互导,并且通过取出漏极电压V1,V2的差来提取阈值电压的差。 此外,通过使用N栅极MOS和P栅极MOS提取近似等于阈值电压的差的N和P沟道半导体的费米能级的差异。 因此,容易实现电子电路的设计和批量生产,并且产生电压和温度变化波动小的参考电压小。
    • 10. 发明专利
    • REFERENCE VOLTAGE GENERATOR
    • JPS60150113A
    • 1985-08-07
    • JP24952684
    • 1984-11-28
    • HITACHI LTD
    • YOU KANJIYAMASHIRO OSAMU
    • G05F3/24
    • PURPOSE:To obtain a constant voltage output circuit suited to a monolithic IC by producing the reference voltage according to the difference of threshold voltage between the 1st and 2nd insulated gate type field effect transistors. CONSTITUTION:The p type areas 4 and 5 serving as the source and the drain of an MISFET are formed on an n type semiconductor substrate 1. A gate insulated film 2 is formed on the surface of the substrate 1 between both areas 4 and 5, and a polysilicon layer is formed on the film 2. An impurity (n type) of the same conduction type as the substrate 1 is mixed into the polysilicon layer which forms a gate 6' of an MISFETQ1. While an impurity (p type) adverse to the substrate 1 is mixed into the polysilicon layer forming a gate 6 of an MISFETQ2. The threshold values of both FETs Q1 and Q2 are obtained by equations respectively, and the voltage difference between both threshold values is equal to a difference (phiMp-phiMn) of the work function. This difference can be defined as the voltage corresponding to the energy gap of the silicon.