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    • 1. 发明申请
    • VERFAHREN ZUR BILDUNG EINES SOI-SUBSTRATS, VERTIKALER TRANSISTOR UND SPEICHERZELLE MIT VERTIKALEM TRANSISTOR
    • 具有垂直晶体管的形成SOI衬底,垂直晶体管和存储器单元的方法
    • WO2003028093A2
    • 2003-04-03
    • PCT/DE2002/003023
    • 2002-08-19
    • INFINEON TECHNOLOGIES AGBIRNER, AlbertBREUER, SteffenGOLDBACH, MatthiasLUETZEN, JoernSCHUMANN, Dirk
    • BIRNER, AlbertBREUER, SteffenGOLDBACH, MatthiasLUETZEN, JoernSCHUMANN, Dirk
    • H01L21/84
    • H01L27/10864H01L27/10867H01L27/1203
    • Die vorliegende Erfindung betrifft ein Verfahren zur Erzeugung einer Silicon-On-Insulator-Schichtstruktur auf einer Silizium-Oberfläche mit beliebiger Geometrie, mit dem die Silicon-on-Insulator-Struktur auch nur lokal erzeugt werden kann. Das Verfahren umfaßt das Bilden von Mesoporen (10) in dem Silizium-Oberflächenbereich (3), die Oxidation der Mesoporen-Oberfläche unter Bildung von Siliziumoxid und Stegbereichen (22) aus einkristallinem Silizium, die zwischen benachbarten Mesoporen (10) verbleiben, wobei dieser Schritt beendet wird, sobald eine vorgegebene minimale Silizium-Wandstärke der Stegbereiche (22) erreicht ist, das Freilegen der an dem von dem Halbleiter-Substrat (2) abgewandten Ende angeordneten Stegbereiche (22) zwischen benachbarten Mesoporen; und das Durchführen eines selektiven Epitaxieverfahrens, durch das Silizium auf den freigelegten Stegbereichen (22) selektiv gegenüber den Siliziumoxidbereichen (11) aufwächst. Das Verfahren kann verwendet werden, um einen vertikalen Transistor und eine Speicherzelle mit einem derartigen Auswahltransistor herzustellen.
    • 本发明涉及一种在任意几何形状的硅表面上制造绝缘体上硅层结构的方法,利用该方法仅在局部产生绝缘体上硅结构 可以。 该方法包括在硅表面区域(3)中形成中孔(10),氧化中孔表面以形成氧化硅,以及在相邻的中孔(10)之间形成的单晶硅的脊区(22) ),一旦已达到焊盘区域(22)的预定最小硅壁厚度,就终止该步骤,暴露位于远离半导体衬底(2)的端部处的相邻介孔之间的焊盘区域(22); 并且执行选择性外延工艺,由此在暴露的焊盘区域(22)上的硅选择性地抵靠在氧化硅区域(11)上。 该方法可用于制造具有这种选择晶体管的垂直晶体管和存储单元。
    • 3. 发明申请
    • METHOD FOR PRODUCING A VERTICAL TRANSISTOR IN A TRENCH AND A CORRESPONDING VERTICAL TRANSISTOR
    • 用于生产垂直型晶体管在战壕里垂直晶体管
    • WO03010826A2
    • 2003-02-06
    • PCT/EP0207593
    • 2002-07-08
    • INFINEON TECHNOLOGIES AGBIRNER ALBERTLUETZEN JOERN
    • BIRNER ALBERTLUETZEN JOERN
    • H01L21/336H01L21/8242H01L27/108H01L29/00
    • H01L27/10864H01L27/10841H01L27/10867H01L27/10876H01L29/66666
    • In order to produce a vertical transistor, a trench (4) is provided whose lateral wall (6) is formed by a monocrystalline semiconductor substrate (2) and whose bottom (8) is formed by a polycrystalline semiconductor substrate (10). A transition region (12) made of an insulating material is placed between the lateral wall (6) and the bottom (8). A semiconductor layer is deposited selective to the material of the transition region (12) whereby enabling an epitaxial semiconductor layer (24) to grow on the lateral wall (6) and a semiconductor layer (26) to grow on the bottom (8), whereby these a space remains between these layers. The deposited semiconductor layers (24, 26) are covered with a thin dielectric (28) that only partially limits a current flow, and the space is filled with a conductive material (30). During a subsequent thermal treatment, dopants diffuse out of the conductive material (30) and into the epitaxial semiconductor layer (26) and form a dopant region (44) therein. The thin dielectric (28) limits the diffusion of the dopants into the semiconductor substrate (2) and prevents the spreading of crystal lattice faults into the epitaxial semiconductor layer (26).
    • 用于制造垂直晶体管,沟槽(4)的单晶半导体衬底(2)和(8)的多晶半导体衬底(10)形成其侧壁,其底部的提供(6)。 所述侧壁(6)和底部(8)之间是由绝缘材料制成的过渡区域(12)。 选择性地向所述过渡区域(12)的材料,半导体层被沉积,以便在侧壁(6),一个外延半导体层(24)和在地板(8)生长半导体层(26),仍然存在间隙,该间隙之间。 所沉积的半导体层(24,26)被填充覆盖有薄的,电流的流动仅部分地限定电介质(28)和用导电材料(30)的中间空间。 在随后的热处理中,掺杂剂从所述外延半导体层(26)在导电材料(30)扩散并形成一个掺杂区(44)。 限定在一方面薄电介质(28),在半导体衬底(2)和在另一方面的掺杂物的扩散它可以防止晶体的晶格缺陷的扩散的外延半导体层(26)英寸
    • 9. 发明申请
    • METHOD FOR PRODUCING TRENCH CAPACITORS
    • 用于生产抓斗电容器
    • WO0239501A3
    • 2003-03-13
    • PCT/EP0112733
    • 2001-11-02
    • INFINEON TECHNOLOGIES AGBIRNER ALBERTFRANOSCH MARTINGOLDBACH MATTHIAS
    • BIRNER ALBERTFRANOSCH MARTINGOLDBACH MATTHIAS
    • H01L21/3063H01L21/8242H01L27/108H01L21/334
    • H01L27/1087
    • The invention relates to a method for producing trench capacitors having trenches (3-9) with mesopores (3-12). These trench capacitors are suited both for discrete capacitors and for integrated semiconductor memories. The mesopores significantly increase the surface for electrodes for the trench capacitors and thereby the capacitance of the trench capacitors. According to the invention, the mesopores, which are small channels similar to those made by woodworms and which have diameters ranging from 2 to 50 nm, are electrochemically produced. This method enables the production of capacitances with a high capacitance-to-volume ratio. The invention is additionally advantageous in that the growth of the mesopores stops once the mesopores reach a minimal distance from another mesopore or from adjacent trenches (self-passivation). As a result, the formation of short circuits between two adjacent mesopores can be prevented in a self-regulated manner. The invention also relates to a semiconductor component comprising at least one trench capacitor on the front side of a semiconductor substrate, which can be produced using the inventive method.
    • 提供了一种用于生产电容器的描述严重具有沟槽(3-9)与孔(3-12)。 这种严重的电容器适于分立电容器作为用于集成半导体存储器。 中孔增加的电极,用于电容器坟墓表面积,因此显著坟墓电容器的容量。 中孔是具有在根据本发明的通过电化学方法产生2至50nm范围内的直径小holzwurm孔状的通道。 该方法允许容量的产生具有大容量 - 体积比。 进一步的优点是,中孔的生长最新然后进入静止状态时的孔到达另一中孔或相邻的沟槽(个体钝化)的最小距离。 以这种方式,甚至调节“短裤”形成的两个相邻孔之间被避免。 此外,半导体器件描述了一种具有在其上可与本发明方法制造的半导体衬底的前侧的至少一个严重电容器。