41.
    发明专利
    未知

    公开(公告)号:DE69328342T2

    公开(公告)日:2000-09-07

    申请号:DE69328342

    申请日:1993-12-09

    Applicant: SONY CORP

    Abstract: A semiconductor memory cell, or a semiconductor memory cell for ASICs, of the structure is provided which ensures stable transistor operation, which does not require a large-capacitance capacitor as required in conventional DRAMs, which ensures reliable reading and writing of information, that permits short-channel design, and that allows the cell area to be reduced. The semiconductor memory cell includes: an information storage transistor (TR1) comprising a first semiconductor channel forming region (Ch1), first and second conductive regions (SC1, SC2) and a first conductive gate (G1); and a switching transistor (TR2) comprising a second semiconductor channel forming region (Ch2), third and fourth conductive regions (SC3, SC4) and a second conductive gate (G2); wherein said first conductive gate (G1) and said second conductive gate (G2) are connected to a first memory-cell-selection line (1ST LINE), said fourth conductive region (SC4) is connected to said first semiconductor channel forming region (Ch1), said third conductive region (SC3) is connected to a second memory-cell-selection line (2ND LINE), and said first conductive region (SC1) is connected to a read line (READ LINE).

    43.
    发明专利
    未知

    公开(公告)号:DE69226687T2

    公开(公告)日:1999-04-15

    申请号:DE69226687

    申请日:1992-10-13

    Applicant: SONY CORP

    Abstract: The present invention concerns a method of manufacturing a SOI substrate of forming a thin film of a silicon layer on an insulator substrate by bonding a substrate, wherein the method comprises successively: a step of forming an etching stopping layer on the surface of a silicon substrate, a step of forming an epitaxially grown silicon layer on said etching stopping layer, a step of bonding said silicon substrate formed with said silicon layer with another substrate as the insulator substrate, a step of grinding said silicon substrate from the rear face and etching it till said etching stopping layer is exposed and a step of removing said etching stopping layer.

    Full CMOS type static random access memories

    公开(公告)号:GB2254487B

    公开(公告)日:1995-06-21

    申请号:GB9206123

    申请日:1992-03-20

    Applicant: SONY CORP

    Abstract: A method for manufacture of a full CMOS type SRAM, comprising the steps of forming a first mask layer on a semiconductor layer, and patterning the first mask layer by photolithography to form semiconductor island layers where a driver MOS transistor and a load MOS transistor are formable with a slight space therebetween; forming a second mask layer on the semiconductor layer, and patterning the second mask layer by photolithography in such a manner as to overlap the region with one of the driver and load MOS transistors, but not to overlap the isolating region between the transistors; masking, with a resist film, the region with the other of the driver and load MOS transistors, and etching the first mask layer while masking the same with the resist film and the second mask layer; and etching the semiconductor layer while masking the same with the first mask layer, thereby forming mutually isolated semiconductor island layers where the driver and load MOS transistors are formed respectively. According to this method, the width of each transistor and the space between the transistors can be minimized to consequently achieve an enhanced integration density.

    45.
    发明专利
    未知

    公开(公告)号:DE68920365D1

    公开(公告)日:1995-02-16

    申请号:DE68920365

    申请日:1989-06-16

    Abstract: The present invention relates to a method for polishing a silicon wafer. The method comprises the steps of: (a) supplying a polishing fluid to a polishing surface, the polishing fluid including an alkaline fluid and polishing particles of high-purity silica dispersed in the alkaline fluid, the polishing surface being planar; (b) bringing a silicon wafer in contact with the polishing surface; and (c) moving at least one of the silicon wafer and the polishing surface relative to the other, thereby polishing the silicon wafer. The method is characterized by the following: the polishing surface is made of a ceramic material harder than the silicon wafer and more resistant to mechanochemical polishing than silicon, and the maximum roughness of the ceramic is less than 0.02 mu m.

    SEMICONDUCTOR DEVICE
    46.
    发明专利

    公开(公告)号:CA1136773A

    公开(公告)日:1982-11-30

    申请号:CA333370

    申请日:1979-08-08

    Applicant: SONY CORP

    Abstract: A hetero-junction bipolar transistor or gate controlled switch which is formed generally of a semiconductor substrate, a first region of first conductivity type in the substrate, a second region of second conductivity type in the substrate and adjacent to the first region, a third region of the first conductivity type adjacent to the second region having at least a portion on the substrate which is comprised of the same element as the substrate and oxygen, the band gap energy of the portion being larger than that of the second region there being transportation of majority carriers in the first region to the third region; wherein the device provides high current gain, superior switching characteristics, the concentration of current is prevented and wherein a method of forming an emitter having a low resistivity is provided.

    SEMICONDUCTOR DEVICE HAVING A PASSIVATION LAYER CONSISTING OF SILICON AND OXYGEN, AND METHOD OF MANUFACTURING THE SAME

    公开(公告)号:CA1029475A

    公开(公告)日:1978-04-11

    申请号:CA223550

    申请日:1975-04-01

    Applicant: SONY CORP

    Abstract: 1496814 Semiconductor device passivation SONY CORP 20 March 1975 [30 March 1974] 11691/75 Heading H1K The surface of a semiconductor substrate is passivated by a polycrystalline silicon layer containing from 2 to 45 atomic per cent oxygen. The layer may be applied to the PN junction of a rectifying diode but as described is applied to at least the guard ring protected collector junction of a diffused planar silicon transistor formed in an N type substrate or an N epitaxial layer on an N + substrate. In manufacture the oxide masking used in the diffusion steps is removed and the polycrystalline layer deposited from a mixture of silane and nitrous oxide in a flow of nitrogen with the substrate at 600- 750‹ C., and overcoated with vapour grown silicon dioxide optionally separated from the ploysilicon by a moisture resistant layer, e.g. of aluminium. If silicon tetrachloride is used instead of silane a temperature of 1100‹ C is necessary. Alternative sources of oxygen are NO 2 , NO, O 2 and H 2 O vapour. The oxygen is present as a mixture of silicon monoxide and dioxide at the grain boundaries but is also dispersed in the grains themselves, the dispersion being removed by annealing, e.g. at 1100‹C for 30 minutes. The mean grain size is preferably from 100-1000 Š, and all the grains preferably have sizes within this range. Although the collector breakdown voltage falls with increasing oxygen content the leakage current decreases and if the emitter junction is also covered the amplification factor increases but remains stable.

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