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    • 36. 发明专利
    • Gate turn off thyristor
    • 盖茨关闭三重奏
    • JPS60210874A
    • 1985-10-23
    • JP6687384
    • 1984-04-04
    • Meidensha Electric Mfg Co Ltd
    • HAYASHI YASUHIDE
    • H01L29/74H01L29/10H01L29/744
    • H01L29/102
    • PURPOSE:To make characteristics of a thyristor uniform by improving the ON- characteristic by a method wherein the titled device using a P diffused layer buried in a P-base as a buried gate is provided with a P buffer layer in the neighborhood of the buried diffused layer. CONSTITUTION:This device having the buried P diffused layer in the P-base is provided with the P buffer layer, whose seat resistance value is smaller than that of the P-base layer in the channel part and larger than that of the P buried gate diffused layer, in the neighborhood of this diffused layer. In such a manner, a defect-generating region penetrating to the channel between the P buried diffused layers are so constructed as to be covered in view from the anode side. In other words, an N type substrate is brought into PNP structure by diffusing a P type impurity, and the P buffer layer 14 is formed by diffusing boron by the use of an oxide film as a mask. Successively, a P buried gate layer 12 is formed and covered with a P epitaxial layer, and an N emitter is provided, resulting in a P-N-P-P N structure.
    • 目的:通过使用埋藏在P基底中的P ++扩散层的标题装置作为掩埋栅极的方法,通过改善ON特性来使晶闸管的特性均匀,并具有P + 层在埋藏扩散层的附近。 构成:在P型基底中具有埋置P ++扩散层的器件设置有P +缓冲层,其阻抗值小于通道部分中P基层的座阻力值,并且较大 比扩散层附近的P ++层掩埋扩散层的厚度大。 以这种方式,贯穿P ++掩埋扩散层之间的沟道的缺陷产生区被构造成从阳极侧观察覆盖。 换句话说,通过扩散P型杂质使N型衬底进入PNP结构,并且通过使用氧化膜作为掩模将硼扩散而形成P +缓冲层14。 接着,形成P ++层掩埋栅极层12并用P +外延层覆盖,并提供N +发射极,产生P-N-P-P N +结构。
    • 38. 发明专利
    • High-sensitivity thyristor
    • 高灵敏度THYRISTOR
    • JPS59124766A
    • 1984-07-18
    • JP31183
    • 1983-01-05
    • Nec Corp
    • SUGIMOTO YASUO
    • H01L29/744H01L29/10H01L29/74
    • H01L29/102
    • PURPOSE:To control Igt (gate trigger currents) with high reliability by overlapping a cathode electrode and a gate electrode on an oxide film coating a section in the vicinity of the exposed section of the surface of a junction section of a diode consisting of a P type base layer and an N type emitter layer. CONSTITUTION:The thyristor consists of an oxide film layer 6 in approximately 0.05-2.0mum formed for protecting a P-N junction end, the cathode electrode 12 on which a metal such as aluminum is evaporated in thickness of 3-15mum, the gate electrode 13 formed through the evaporation of the metal such as aluminum at the same time as the cathode electrode is formed, a cathode electrode section 22, which is connected to the cathode electrode and further projected and formed on the oxide film 6 only by approximately 10-50mum from the P-N junction end 8, and a gate electrode section 23 overlapped and formed on the oxide film 6 only by approximately 10-50mum. When a gate and a cathode are forward- biassed, an induced channel layer 7 is not generated immediately under the cathode electrode 22 because the cathode electrode 22 takes negative potential to a low concentration P layer 5. When the gate and the cathode are reverse- biassed, the induced channel layer 7 is not also generated at the place immediately under the gate electrode 23.
    • 目的:通过在阴极电极和栅极电极之间重叠氧化膜上,以高可靠性控制Igt(栅极触发电流),涂覆在由P组成的二极管的接合部分的表面暴露部分附近的部分 型基极层和N型发射极层。 构成:晶闸管由形成为用于保护PN结端的大约0.05-2.0μm的氧化物膜层6,其上诸如铝的金属蒸发的厚度为3-15μm的阴极电极12形成,栅电极13形成 通过在形成阴极的同时通过铝等金属的蒸发,阴极电极部分22与阴极电极连接并且进一步投影并形成在氧化膜6上,只有大约10-50微米从 PN结端8和栅极电极部分23重叠并形成在氧化膜6上约10-50微米。 当栅极和阴极被向前偏置时,由于阴极电极22将负电位转移到低浓度P层5,所以不会在阴极22正下方产生感应沟道层7.当栅极和阴极反向时, 感应通道层7也不会在栅电极23正下方的位置产生。
    • 39. 发明专利
    • Thyristor
    • 晶闸管
    • JPS5979571A
    • 1984-05-08
    • JP19010982
    • 1982-10-29
    • Toshiba Corp
    • KATOU MINORU
    • H01L29/10H01L29/74
    • H01L29/74H01L29/1016H01L29/102
    • PURPOSE:To reduce the forward voltage drop, and moreover to improve the switching property, and to contrive to enhance the commutating property of an SCR by a method wherein thickness of the first base layer of the SCR is made to 75mum or less, and surface concentration of the second base layer is set to 1X10 piece/cm or more. CONSTITUTION:A first NB layer 21 is joined on a PE layer 20, and they are surrounded with a P type isolation layer 22. An anode 23 is provided on the surface of the PE layer 20. Thickness of the layer 20 is made to L1>100mum, a second PB layer 24 of the prescribed depth is formed in the layer 21 making surface impurity concentration to 1X10 piece/cm , surface concentration of the layer 24 is set to 1X10 piece/cm and thickness of the layer 21 is set to L2
    • 目的:为了降低正向压降,并且为了提高开关特性,并且通过使SCR的第一基极层的厚度为75μm以下的方法,并且旨在提高SCR的整流性,并且使表面 第二基底层的浓度设定为1×10 18片/ cm 3以上。 构成:第一NB层21连接在PE层20上,并且被P +型隔离层22包围。在PE层20的表面上设置有阳极23.层20的厚度为 制成L1>100μm,在层21中形成规定深度的第二PB层24,使得表面杂质浓度为1×10 18片/ cm 3,层24的表面浓度设定为1×10 18 < 片/ cm 3,层21的厚度在层20和层24之间设定为L2 <75μm。在层24中设置规定深度的NE层25,形成阴极26,栅极 电极27形成在层24的曝光表面上,并且保护膜28粘附到层21的曝光表面。此时,NB层21的宽度L2被选择为不产生穿透 考虑到要进行重金属扩散时N型Si的电阻率的增加,根据保证的阻塞电压,a 此外,扩散是为了使少数载体的寿命变为0.05musec。 根据该结构,能够减小换向电容器的容量,能够提高换向特性。
    • 40. 发明专利
    • Gate turn-off thyristor
    • 门关闭三通阀
    • JPS5927571A
    • 1984-02-14
    • JP13672182
    • 1982-08-05
    • Meidensha Electric Mfg Co Ltd
    • SUEOKA TETSUOKUBO TAKEHARU
    • H01L29/10H01L29/74H01L29/744
    • H01L29/102H01L29/74H01L29/744
    • PURPOSE: To obtain a gate turn-off thyristor of high reliability having preferable turning-ON and turning-OFF characteristics by reducing the surface density of a P
      2 layer opposed to N
      2 layer smaller than the surface density of the P
      2 layer opposed to the N
      2 layer forming a main GTO part.
      CONSTITUTION: Gallium is diffused from both side surfaces of a silicon substrate N
      1 to form P
      1 and P
      2 layers. Then, an oxidized film is formed on the overall surface, an oxidized film 15 remains on the region of a complementary thyristor AG in which a central part AG region of a wafer, i.e., an N
      3 layer is formed, boron is selectively diffused in other region to form an impurity layer 16. A high density impurity layer 5 is formed in the prescribed pattern on the surface of a P
      2 layer 4 as a gate layer. Then, an epitaxial single crystal layer 19 is grown on the surface side of the P
      2 layer. An N
      1 layer 7, an N
      3 layer 8 and N
      4 layer 9 are selectively diffused in the prescribed pattern by a selectively diffusing method on the surface of the P
      2 layer. Subsequently, a GTO can be obtained through the prescribed diffusion of gold and the bonding of electrodes.
      COPYRIGHT: (C)1984,JPO&Japio
    • 目的:通过降低与N2层相对的P2层的表面密度小于与N2层相对的P2层的表面密度的P2层的表面密度,获得具有优异的导通和断开特性的高可靠性的栅极截止晶闸管 形成主要的GTO部分。 构成:镓从硅衬底N1的两个侧表面扩散以形成P1和P2层。 然后,在整个表面上形成氧化膜,氧化膜15保留在晶片的中心部分AG区域即N3层的互补晶闸管AG的区域上,硼选择性地扩散到其他 以形成杂质层16.在作为栅极层的P2层4的表面上以规定的图案形成高密度杂质层5。 然后,在P2层的表面侧生长外延单晶层19。 通过选择性扩散方法,在P2层的表面上,通过选择性地扩散N1层7,N3层8和N4层9。 随后,可以通过规定的金扩散和电极的结合获得GTO。