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    • 2. 发明授权
    • Method of fabricating semiconductor memory device
    • 制造半导体存储器件的方法
    • US6153460A
    • 2000-11-28
    • US470990
    • 1999-12-23
    • Shigeo OhnishiNobuyuki TakenakaKatsuji Iguchi
    • Shigeo OhnishiNobuyuki TakenakaKatsuji Iguchi
    • H01L21/302H01L21/02H01L21/3065H01L21/768H01L21/8242H01L27/10H01L27/108H01L21/8234
    • H01L27/10852H01L28/55H01L28/60H01L28/75
    • A method of fabricating a semiconductor memory device comprises the steps of: (a) forming an interlayer insulating film on a semiconductor substrate, opening a contact hole in said interlayer insulating film, and burying a plug in said contact hole; (b) forming a first insulating film on said interlayer insulating film inclusive of said plug, and forming a trench in said first insulating film above said plug; (c) forming a first conductive film on said first insulating film inclusive of said trench, and etching back said first conductive film by a chemical mechanical polishing method to form a bottom electrode inside said trench; (d) forming a high dielectric film or a ferroelectric film and a second conductive film in this order on said first insulating film inclusive of said bottom electrode; and (e) patterning simultaneously said high dielectric film or ferroelectric film and said second conductive film to form a capacitor insulating film and a top electrode.
    • 一种制造半导体存储器件的方法包括以下步骤:(a)在半导体衬底上形成层间绝缘膜,打开所述层间绝缘膜中的接触孔,并将插塞埋入所述接触孔中; (b)在包括所述插头的所述层间绝缘膜上形成第一绝缘膜,并且在所述插头上方的所述第一绝缘膜中形成沟槽; (c)在包括所述沟槽的所述第一绝缘膜上形成第一导电膜,并通过化学机械抛光方法蚀刻所述第一导电膜,以在所述沟槽内部形成底电极; (d)在包括所述底部电极的所述第一绝缘膜上依次形成高电介质膜或铁电体膜和第二导电膜; 和(e)同时形成所述高电介质膜或铁电体膜和所述第二导电膜以形成电容器绝缘膜和顶部电极。
    • 6. 发明授权
    • Method for manufacturing a semiconductor device
    • 半导体器件的制造方法
    • US5795803A
    • 1998-08-18
    • US871680
    • 1997-06-09
    • Yoshiji TakamuraAkio KawamuraKatsuji Iguchi
    • Yoshiji TakamuraAkio KawamuraKatsuji Iguchi
    • H01L21/265H01L21/8238H01L27/092
    • H01L21/823892H01L27/0922
    • A method of manufacturing a semiconductor device comprises; forming a device isolation region in a semiconductor substrate; forming at least a first conductivity type impurity region in the semiconductor substrate; and forming on the semiconductor substrate a transistor including a gate insulating film, a gate electrode, source/drain regions and a channel located directly under the gate electrode, wherein the first conductivity type impurity region is formed by the steps of: an ion implantation 1 having a concentration peak at a location deeper than the bottom of the device isolation region; an ion implantation 2 having a concentration peak at a location around the bottom of the device isolation region; an ion implantation 3 having a concentration peak around the junction regions where the source/drain regions are to be formed; and an ion implantation 4 having a concentration peak on the surface or directly under the surface of the region where the channel is to be formed.
    • 一种制造半导体器件的方法包括: 在半导体衬底中形成器件隔离区; 在半导体衬底中形成至少第一导电型杂质区; 以及在所述半导体基板上形成包括栅极绝缘膜,栅极电极,源极/漏极区域和位于所述栅极电极正下方的沟道的晶体管,其中所述第一导电型杂质区域通过以下步骤形成:离子注入1 在比器件隔离区域的底部更深的位置处具有浓度峰值; 离子注入2,其在器件隔离区域的底部周围的位置处具有浓度峰值; 在要形成源/漏区的结区周围具有浓度峰的离子注入3; 以及在要形成沟道的区域的表面或表面下方具有浓度峰值的离子注入4。
    • 8. 发明授权
    • Method for rewriting a flash memory
    • 重写闪存的方法
    • US5576995A
    • 1996-11-19
    • US547158
    • 1995-10-24
    • Shinichi SatoKatsuji Iguchi
    • Shinichi SatoKatsuji Iguchi
    • G11C17/00G11C16/02G11C16/04G11C16/10G11C16/14H01L21/8247H01L27/115H01L29/788H01L29/792
    • G11C16/10G11C16/14
    • A method for rewriting a flash memory wherein a plurality of memory cells each of which comprises a pair of source and drain, a floating gate and a control gate are arranged in matrix in a first conductivity-type well formed in a second conductivity-type deep well formed in the first conductivity-type semiconductor substrate; and in which the floating gate is charged with electrons when the flash memory is written and the floating gate is discharged of the electrons when the flash memory is erased; in which the erasure of the flash memory is operated by applying to the first conductivity-type well a first positive voltage different from the potential of the substrate, applying to the source or the drain a second positive voltage higher than the first positive voltage and applying to the control gate a first negative voltage.
    • 一种用于重写闪速存储器的方法,其中包括一对源极和漏极的多个存储单元,浮置栅极和控制栅极以矩阵形式布置在形成于第二导电类型深度的第一导电型阱中 在第一导电型半导体衬底中良好地形成; 并且当闪存被写入时浮置栅极被充电,并且当闪速存储器被擦除时浮置栅极被电子放电; 其中通过向第一导电类型阱施加不同于衬底的电位的第一正电压来操作闪速存储器的擦除,向源极或漏极施加高于第一正电压的第二正电压并施加 向控制栅极施加第一负电压。
    • 9. 发明授权
    • Semiconductor memory device
    • 半导体存储器件
    • US5334869A
    • 1994-08-02
    • US112480
    • 1993-08-27
    • Katsuji IguchiSeizo KakimotoNaoyuki Shinmura
    • Katsuji IguchiSeizo KakimotoNaoyuki Shinmura
    • H01L21/8242H01L27/108H01L29/68
    • H01L27/10844H01L27/10817Y10S438/947
    • A semiconductor memory device includes a plurality of memory cells each including a transistor formed on a surface of a semiconductor substrate and having one terminal, and a capacitor formed on the semiconductor substrate and having first and second electrodes, with the first electrode being connected with one terminal of the transistor. The first electrode of the capacitor includes a principal portion of either a generally rectangular cubic configuration or a generally cup-shaped configuration, a peripheral portion spaced from and surrounding a peripheral side wall of the principal portion and a bottom portion connecting an end of the principal portion with an end of the peripheral portion. On the other hand, the second electrode of the capacitor includes respective portions confronting the principal portion, the peripheral portion and the bottom portion of the first electrode.
    • 半导体存储器件包括多个存储单元,每个存储单元包括形成在半导体衬底的表面上并具有一个端子的晶体管,以及形成在半导体衬底上并具有第一和第二电极的电容器,第一电极与一个第一电极连接 晶体管的端子。 电容器的第一电极包括大致矩形立方体形状或大致杯形构造的主要部分,与主要部分的周边侧壁间隔开并围绕主体部分的周边侧壁的周边部分,以及连接主体端部的底部部分 该部分具有周边部分的端部。 另一方面,电容器的第二电极包括与第一电极的主要部分,周边部分和底部相对的各个部分。