Anordnung zum Testen mehrerer Speicherchips auf einem Wafer
    4.
    发明公开
    Anordnung zum Testen mehrerer Speicherchips auf einem Wafer 审中-公开
    用于测试晶片上的多个存储器芯片的布置

    公开(公告)号:EP0953986A3

    公开(公告)日:2005-05-11

    申请号:EP99105689.6

    申请日:1999-03-19

    IPC分类号: G11C29/00

    摘要: Die Erfindung betrifft eine Anordnung zum Testen mehrerer Speicherchips (1) auf einem Wafer, bei der unter Verwendung von Nadeln (6) den Speicherchips (1) Versorgungsspannungen (VDD, VSS), ein Initialisierungssignal (I), ein Auslesesignal (CS), ein Taktsignal (CLK) sowie Adressen-, Daten- und Steuersignale zugeführt sind. Die Adressen-, Daten- und Steuersignale werden dabei von einer im Kerf (2) des Speicherchips angeordneten Logik (5) erzeugt und den Speicherchips (1) direkt zugeführt.

    NON-VOLATILE REDUNDANCY ADDRESSES MEMORY
    6.
    发明公开
    NON-VOLATILE REDUNDANCY ADDRESSES MEMORY 有权
    不挥发存储器故障地址

    公开(公告)号:EP1476880A2

    公开(公告)日:2004-11-17

    申请号:EP03742532.9

    申请日:2003-02-18

    IPC分类号: G11C29/00

    摘要: It is difficult to fabricate a semiconductor memory device without any faulty memory storage cells. One solution is to produce more storage cells than needed on a device and faulty storage cells are replaced by the redundant storage cells. This solution requires that the addresses of the faulty storage cells, along with the replacement storage cells, be saved in a memory. The present invention teaches the use of non-volatile memory cells, particularly magnetoresistive random access memory (MRAM) cells, to store the addresses. Non-volatile memory cells can effectively replace the laser fuses currently used and also provides an advantage in the elimination of the laser fuse-burning step during the fabrication of the device.

    RESISTIVE MEMORY ELEMENTS WITH REDUCED ROUGHNESS
    7.
    发明公开
    RESISTIVE MEMORY ELEMENTS WITH REDUCED ROUGHNESS 审中-公开
    具有较小粗糙度耐存储元件

    公开(公告)号:EP1466330A2

    公开(公告)日:2004-10-13

    申请号:EP03702435.3

    申请日:2003-01-14

    发明人: RABERG, Wolfgang

    IPC分类号: G11C11/16

    CPC分类号: G11C11/16

    摘要: A resistive memory element (144), magnetic random access memory (MRAM) device, and methods of manufacturing thereof, wherein a thin oxide layer (132) is disposed within the first metal layer (136) of thememory element (144). The thin oxide layer (132) comprises an oxygen mono-layer. The roughness of subsequently-formed layers (134/118/116) is reduced, and magnetic capabilities of the resistive memory element (144) are enhanced by the use of the thin oxide layer (132) within the first metal layer (136).

    VERFAHREN ZUR HERSTELLUNG FERROELEKTRISCHER SPEICHERZELLEN
    8.
    发明公开
    VERFAHREN ZUR HERSTELLUNG FERROELEKTRISCHER SPEICHERZELLEN 审中-公开
    用于生产FERRO电记忆CELL

    公开(公告)号:EP1371093A2

    公开(公告)日:2003-12-17

    申请号:EP02727262.4

    申请日:2002-03-22

    IPC分类号: H01L21/8246 H01L21/02

    摘要: The invention relates to a method for producing ferroelectric memory cells in accordance with the stack principle. According to said method, an adhesive layer (2, 3) is formed between a lower capacitor electrode (6) of a memory capacitor and a conductive plug (1), which is formed below said electrode and makes an electric connection between said capacitor electrode (6) and a transistor electrode of a selection transistor that is formed in or on a semiconductor wafer. An oxygen diffusion barrier (4, 5) is formed above the adhesive layer and once the ferroelectric has been deposited, the adhesive layer and the barrier are subjected to rapid thermal processing (RTP) in an oxygen atmosphere. The method is characterised by the following steps: (A) Determination of the oxygen speed of the adhesive layer (2, 3) and the diffusion coefficient (DOxygen(T)) of oxygen in the material of the adhesive layer (2, 3), dependent on the temperature (T); (B) Determination of the diffusion coefficient (DSilicon(T)) of silicon in the material of the adhesive layer (2, 3), dependent on the temperature and (C) Calculation of an optimal temperature range for the RTP step from the two diffusion coefficients, (DOxygen(T)) and (DSilicon(T)) that have been determined for a predetermined layer thickness (dBARR) and layer width (bBARR) of the layer system consisting of the adhesive layer and the oxygen diffusion barrier, so that during the RTP step the siliconisation of the adhesive layer occurs more rapidly than its oxidation.

    MAGNETORESISTIVER SPEICHER UND VERFAHREN ZU SEINEM AUSLESEN
    10.
    发明公开
    MAGNETORESISTIVER SPEICHER UND VERFAHREN ZU SEINEM AUSLESEN 有权
    磁阻存储器和读出方法FOR HIS

    公开(公告)号:EP1340230A2

    公开(公告)日:2003-09-03

    申请号:EP01999944.0

    申请日:2001-11-22

    IPC分类号: G11C11/15

    CPC分类号: G11C11/15 G11C11/16

    摘要: The invention relates to a magnetoresistive memory and is characterized by a control circuit (1) with a first pole which, via a reading distributor (14), can be individually connected to first ends of bit lines (4a, 4b) by means of switching elements (8a, 8b). Said control circuit also has a second pole, which supplies power to an evaluator (2), and has a third pole that is connected to a reference voltage source (U5). The readout circuit additionally comprises a third voltage source (U3) having a voltage, which is approximately equal to the voltage of the first reading voltage source (U1) and which can be individually connected to second ends of the bit lines (4a, 4b) by means of switching elements (9a, 9b). Finally, the readout circuit comprises a fourth voltage source (U4), which can be individually connected to second ends of the word lines (5a, 5b) by means of switching elements (7a, 7b).