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    • 1. 发明专利
    • 半導体装置の保護回路
    • 保护半导体器件的电路
    • JP2014239327A
    • 2014-12-18
    • JP2013120711
    • 2013-06-07
    • 株式会社デンソーDenso Corp
    • KOYAMA KAZUHIRO
    • H03K17/08H01L21/338H01L21/822H01L27/04H01L29/778H01L29/812
    • H02H7/003H01L27/0248H01L29/7408H01L29/7412H01L29/778H03K17/08122
    • 【課題】保護素子のサイズ増大を抑制しつつ、アバランシェエネルギー耐量を得ることができる半導体装置の保護回路を提供する。【解決手段】保護素子としてHEMT1のドレイン−ゲート間にサイリスタ2および第1抵抗3を備えると共に、HEMT1のソース−ゲート間に第2抵抗4およびダイオード5を備える。これにより、HEMT1のターンオフ時にサイリスタ2がオンして保護素子側に電流が流れるようにでき、そのときに第1抵抗3および第2抵抗4で分圧されて形成されるゲート電圧VgによってHEMT1をオンさせるられる。よって、ターンオフ時に、サイリスタ2の耐圧をクランプ電圧として、HEMT1に対してクランプ電圧を超える電圧が印加されないようにしつつ、HEMT1をオンすることで誘導性負荷に蓄積されたエネルギーを消費することが可能となる。【選択図】図1
    • 要解决的问题:提供一种用于保护产生雪崩能量容量的半导体器件的电路,同时抑制保护元件的尺寸增加。解决方案:作为保护元件,晶闸管2和第一电阻器3设置在漏极和漏极之间 HEMT 1的栅极和第二电阻器4和二极管5设置在HEMT 1的源极和栅极之间。当HEMT 1截止时,晶闸管2导通以允许电流流向保护 元件和由第一电阻器3和第二电阻器4分压相应形成的栅极电压Vg可以使HEMT 1导通。 在切断状态下,当晶闸管2的耐压为钳位电压时,防止超过钳位电压的电压被施加到HEMT 1上,可以调谐HEMT 1以消耗存储在 感性负载。
    • 4. 发明专利
    • Semiconductor device, and its manufacturing method
    • 半导体器件及其制造方法
    • JP2007317869A
    • 2007-12-06
    • JP2006145601
    • 2006-05-25
    • Sanyo Electric Co Ltd三洋電機株式会社
    • OTAKE SEIJI
    • H01L21/822H01L21/8222H01L27/04H01L27/06
    • H01L29/8611H01L29/7412
    • PROBLEM TO BE SOLVED: To provide a semiconductor device capable of protecting a resistor and a diode, etc., from an overvoltage, and to provide its manufacturing method.
      SOLUTION: The n-type epitaxial layer 3 of the semiconductor device is divided into a plurality of element forming regions by isolation regions 4, 5. The resistor 1 is formed on one element forming region. Protective elements having pn junction regions 22, 23 are formed in the circumference of the resistor 1. A junction withstand voltage is lower in the pn junction regions 22, 23 than in the pn junction region 21 of the resistor 1. With the structure, the resistor 1 is protected by the breakdown of the pn junction regions 22, 23 when negative ESD surge is impressed on a pad for an electrode to apply the voltage to a p-type diffusion layer 9.
      COPYRIGHT: (C)2008,JPO&INPIT
    • 要解决的问题:提供一种能够从过电压保护电阻器和二极管等的半导体器件,并提供其制造方法。 解决方案:半导体器件的n型外延层3通过隔离区4,5被分成多个元件形成区域。电阻器1形成在一个元件形成区域上。 具有pn结区域22,23的保护元件形成在电阻器1的圆周中。在pn结区域22,23中,结电阻低于电阻器1的pn结区域21。结构上, 电阻1受到pn结区域22,23的击穿的保护,当在用于电极的焊盘上施加负的ESD浪涌以将电压施加到p型扩散层9时。(C)2008年, JPO&INPIT
    • 7. 发明专利
    • Manufacture of planar type thyristor
    • 平面型THYRISTOR的制造
    • JPS5735373A
    • 1982-02-25
    • JP11194780
    • 1980-08-11
    • Mitsubishi Electric Corp
    • SADAMORI MASAAKI
    • H01L21/324H01L29/74
    • H01L29/7412H01L21/324H01L29/74
    • PURPOSE:To set the gate trigger current of a thyristor at a desired level by a method wherein thyristor surface charge density is regulated by heating in an atmosphere of oxygen. CONSTITUTION:An SiO2 film 6 is formed on an exposed surface along the junction border of a planar type thyristor silicon chip 1. The film is first heated in an oxygen current and then is let to gradually cool down and be sintered in a nitrogen current. It is again heated in an oxygen current, to be cooled in an nitrogen current again. A cooling speed is selected and a thyristor gate trigger current is set at a desired value.
    • 目的:通过其中晶闸管表面电荷密度通过在氧气气氛中加热来调节的方法,将晶闸管的栅极触发电流设置在所需的水平。 构成:在平面型晶闸管硅芯片1的接合界面的暴露表面上形成SiO 2膜6.首先在氧气流中加热该膜,然后逐渐冷却并在氮气流中烧结。 再次以氧气流加热,再次以氮气流冷却。 选择冷却速度,将晶闸管门极触发电流设定为期望值。
    • 10. 发明专利
    • Thyristor
    • 晶闸管
    • JPS5972766A
    • 1984-04-24
    • JP18286882
    • 1982-10-20
    • Toshiba Corp
    • YAMAGUCHI YOSHIHIROOOHASHI HIROMICHI
    • H01L23/62H01L29/06H01L29/74
    • H01L29/0661H01L23/62H01L29/7412H01L29/7428H01L2224/48091H01L2224/4813H01L2924/1301H01L2924/00014H01L2924/00
    • PURPOSE:To obtain a thyristor with an overvoltage protecting function, which is turned OFF sefely when an overvoltage is applied, by exposing an N base layer at the outer peripheral part of the thyristor, and connecting a constant voltage element, which has a lower breakdown voltage than the breakdown voltage of the thyristor, between the layer and the gate electrode of a pilot thyristor, which is arranged on the surface of the layer. CONSTITUTION:When a voltage, which exceeds the breakdown voltage of a thyristor 100, is applied between the anode and the cathode of the thyristor 100, the voltage breakdown occurs in a constant voltage diode 9, since the breakdown voltage of the constant voltage diode 9 is set lower than the breakdown voltage of the thyristor 100. The breakdown current flows to a cathode electrode 6 from a gate electrode 11 of a pilot thyristor 120 through a P base layer 3. At this time, the breakdown current functions as the gate current of the pilot thyristor 120 and turns ON the pilot thyristor 120. The turn ON current of the pilot thyristor 120 functions as a gate current for the main thyristor, and turns ON the main thyristor. In this way, an overvoltage protecting function can be incorporated in the thyristor without imparing the characteristics such as an ON voltage.
    • 目的:获得具有过电压保护功能的晶闸管,当施加过电压时,通过在晶闸管的外周部露出N基极层,并连接具有较低击穿的恒压元件 导电晶闸管的层与栅电极之间的晶闸管的击穿电压,该引导晶闸管布置在该层的表面上。 构成:当超过晶闸管100的击穿电压的电压施加在晶闸管100的阳极和阴极之间时,在恒压二极管9中发生电压击穿,因为恒压二极管9的击穿电压 被设定为低于晶闸管100的击穿电压。击穿电流通过P基极层3从先导晶闸管120的栅极11流向阴极电极6.此时,击穿电流用作栅极电流 并且导通晶闸管120导通。导频晶闸管120的导通电流用作主晶闸管的栅极电流,并且导通主晶闸管。 以这种方式,可以在晶闸管中并入过电压保护功能,而不会引起诸如导通电压的特性。