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    • 7. 发明授权
    • Flash memory and fabrication method and operation method for the same
    • 闪存及其制作方法及操作方法相同
    • US08526242B2
    • 2013-09-03
    • US13321120
    • 2011-03-07
    • Ru HuangYimao CaiShiqiang QinQianqian HuangPoren TangYu TangGengyu Yang
    • Ru HuangYimao CaiShiqiang QinQianqian HuangPoren TangYu TangGengyu Yang
    • G11C11/34
    • H01L27/11556H01L29/7391H01L29/7889H01L29/8616
    • The present invention discloses a flash memory and the fabrication method and the operation method for the same. The flash memory comprises two memory cells of vertical channels, wherein a lightly-doped N type (or P type) silicon is used as a substrate; a P+ region (or an N+ region) is provided on each of the both ends of the silicon surface, and two channel regions perpendicular to the surface are provided therebetween; an N+ region (or a P+ region) shared by two channels is provided over the channels; a tunneling oxide layer, a polysilicon floating gate, a block oxide layer and a polysilicon control gate are provided sequentially on the outer sides of each channel from inside to outside; and the polysilicon floating gate and the polysilicon control gate are isolated from the P+ region by a sidewall oxide layer. The whole device is a two-bit TFET type flash memory with vertical channels which has better compatibility with prior-art standard CMOS process. As compared with a conventional MOSFET-based flash memory, the flash memory according to the present invention possesses various advantages such as high programming efficiency, low power consumption, effective inhibition of punch-through effect, and high density, etc.
    • 本发明公开了一种闪存及其制作方法及其操作方法。 闪速存储器包括两个垂直通道的存储单元,其中使用轻掺杂N型(或P型)硅作为衬底; 在硅表面的两端分别设置有P +区域(或N +区域),并且在两面之间设置与该表面垂直的2个沟道区域。 在通道上设置由两个通道共享的N +区域(或P +区域); 隧道氧化物层,多晶硅浮置栅极,块状氧化物层和多晶硅控制栅极,从内向外依次设置在每个沟道的外侧上; 并且多晶硅浮置栅极和多晶硅控制栅极通过侧壁氧化物层与P +区域隔离。 整个器件是具有垂直通道的两位TFET型闪存,与现有的标准CMOS工艺具有更好的兼容性。 与传统的基于MOSFET的闪存相比,根据本发明的闪速存储器具有诸如编程效率高,功耗低,穿透效果有效抑制和高密度等各种优点。
    • 8. 发明申请
    • FLASH MEMORY AND FABRICATION METHOD AND OPERATION METHOD FOR THE SAME
    • 闪存及其制造方法和操作方法
    • US20120113726A1
    • 2012-05-10
    • US13321120
    • 2011-03-07
    • Ru HuangYimao CaiShiqiang QinQianqian HuangPoren TangYu TangGengyu Yang
    • Ru HuangYimao CaiShiqiang QinQianqian HuangPoren TangYu TangGengyu Yang
    • G11C16/26H01L21/336H01L27/115
    • H01L27/11556H01L29/7391H01L29/7889H01L29/8616
    • The present invention discloses a flash memory and the fabrication method and the operation method for the same. The flash memory comprises two memory cells of vertical channels, wherein a lightly-doped N type (or P type) silicon is used as a substrate; a P+ region (or an N+ region) is provided on each of the both ends of the silicon surface, and two channel regions perpendicular to the surface are provided therebetween; an N+ region (or a P+ region) shared by two channels is provided over the channels; a tunneling oxide layer, a polysilicon floating gate, a block oxide layer and a polysilicon control gate are provided sequentially on the outer sides of each channel from inside to outside; and the polysilicon floating gate and the polysilicon control gate are isolated from the P+ region by a sidewall oxide layer. The whole device is a two-bit TFET type flash memory with vertical channels which has better compatibility with prior-art standard CMOS process. As compared with a conventional MOSFET-based flash memory, the flash memory according to the present invention possesses various advantages such as high programming efficiency, low power consumption, effective inhibition of punch-through effect, and high density, etc.
    • 本发明公开了一种闪存及其制作方法及其操作方法。 闪速存储器包括两个垂直通道的存储单元,其中使用轻掺杂N型(或P型)硅作为衬底; 在硅表面的两端分别设置有P +区域(或N +区域),并且在两面之间设置与该表面垂直的2个沟道区域。 在通道上设置由两个通道共享的N +区域(或P +区域); 隧道氧化物层,多晶硅浮置栅极,块状氧化物层和多晶硅控制栅极,从内向外依次设置在每个沟道的外侧上; 并且多晶硅浮置栅极和多晶硅控制栅极通过侧壁氧化物层与P +区域隔离。 整个器件是具有垂直通道的两位TFET型闪存,与现有的标准CMOS工艺具有更好的兼容性。 与传统的基于MOSFET的闪存相比,根据本发明的闪速存储器具有诸如编程效率高,功耗低,穿透效果有效抑制和高密度等各种优点。
    • 9. 发明申请
    • 3-D STRUCTURED NONVOLATILE MEMORY ARRAY AND METHOD FOR FABRICATING THE SAME
    • 3-D结构化非易失性存储器阵列及其制造方法
    • US20120061637A1
    • 2012-03-15
    • US13131601
    • 2011-04-01
    • Yimao CaiRu HuangShiqiang QinPoren TangLIjie ZhangYu Tang
    • Yimao CaiRu HuangShiqiang QinPoren TangLIjie ZhangYu Tang
    • H01L45/00
    • H01L27/249H01L27/0688H01L27/101H01L45/04H01L45/1226H01L45/146H01L45/1691
    • The present invention relates to a field of nonvolatile memory technology in ULSI circuits manufacturing technology and discloses a 3D-structured resistive-switching memory array and a method for fabricating the same. The 3D-structured resistive-switching memory array according to the invention includes a substrate and a stack structure of bottom electrodes/isolation dielectric layers, deep trenches are etched in the stack structure of the bottom electrodes/the isolation dielectric layers; a resistive-switching material layer and a top electrode layer are deposited on sidewalls of the deep trenches, wherein the top electrodes and the bottom electrodes are crossed over each other on the sidewalls of the deep trenches with the resistive-switching material being interposed at cross-over points, each of the cross-over points forms one resistive-switching memory cell, and all of the resistive-switching memory cells form the 3D-structured resistive-switching memory array, and the 3D resistive-switching memory in the array are isolated by the isolation dielectric layers. According to the invention, the storage density of a resistive-switching memory can be improved, the process can be simplified, and the cost of the process can be reduced.
    • 本发明涉及ULSI电路制造技术中的非易失性存储器技术领域,并公开了一种3D结构的电阻式开关存储器阵列及其制造方法。 根据本发明的3D结构的电阻式开关存储器阵列包括底部和底部电极/隔离电介质层的堆叠结构,在底部电极/隔离电介质层的堆叠结构中蚀刻深沟槽; 电阻切换材料层和顶部电极层沉积在深沟槽的侧壁上,其中顶部电极和底部电极在深沟槽的侧壁上彼此交叉,电阻切换材料插入在交叉 通过点,每个交叉点形成一个电阻式开关存储单元,并且所有的电阻式开关存储单元形成三维结构的电阻式开关存储器阵列,阵列中的3D电阻式切换存储器是 通过隔离绝缘层隔离。 根据本发明,能够提高电阻式切换存储器的存储密度,能够简化处理,能够降低处理成本。
    • 10. 发明申请
    • FLASH MEMORY AND METHOD FOR FABRICATING THE SAME
    • 闪存及其制造方法
    • US20120261740A1
    • 2012-10-18
    • US13389720
    • 2011-10-14
    • Yimao CaiRu HuangShiqiang QinPoren TangShenghu Tan
    • Yimao CaiRu HuangShiqiang QinPoren TangShenghu Tan
    • H01L29/788H01L21/336
    • H01L29/7391H01L27/1203H01L29/788H01L29/8616
    • The present invention discloses a flash memory and a method for fabricating the same, and relates to the technical field of the semiconductor memory. The flash memory includes a buried oxygen layer on which a source terminal, a channel, and a drain terminal are disposed, wherein the channel is between the source terminal and the drain terminal, and a tunneling oxide layer, a polysilicon floating gate, a blocking oxide layer, and a polysilicon control gate are sequentially disposed on the channel, and a thin silicon nitride layer is disposed between the source terminal and the channel. The method includes: 1) performing a shallow trench isolation on a SOI silicon substrate to form an active region; 2) sequentially forming a tunneling oxide layer and a first polysilicon layer on the SOI silicon substrate to form a polysilicon floating gate, and forming a blocking oxide layer and a second polysilicon layer to form a polysilicon control gate; 3) etching the resultant structure to form a gate stack structure; 4) forming a drain terminal at one side of the gate stack structure, etching the silicon film at the other side of the gate stack structure, growing a thin silicon nitride layer, and then refilling the hole structure with silicon material, to form a source terminal. The method has the advantages of high programming efficiency, low power consumption, effectively preventing source-drain punchthrough effect.
    • 本发明公开了一种闪速存储器及其制造方法,涉及半导体存储器的技术领域。 闪速存储器包括掩埋氧层,其上设置有源极端子,沟道和漏极端子,其中沟道位于源极端子和漏极端子之间,以及隧道氧化物层,多晶硅浮动栅极,阻塞层 氧化物层和多晶硅控制栅极依次设置在沟道上,并且在源极端子和沟道之间设置有薄的氮化硅层。 该方法包括:1)在SOI硅衬底上进行浅沟槽隔离以形成有源区; 2)在SOI硅衬底上依次形成隧道氧化物层和第一多晶硅层,以形成多晶硅浮栅,并形成阻挡氧化层和第二多晶硅层以形成多晶硅控制栅极; 3)蚀刻所得结构以形成栅叠层结构; 4)在栅极堆叠结构的一侧形成漏极端子,蚀刻栅极叠层结构的另一侧的硅膜,生长薄的氮化硅层,然后用硅材料再填充孔结构,以形成源极 终奌站。 该方法具有编程效率高,功耗低,有效防止源极漏极穿通效应的优点。