Method of simultaneous formation of bitline isolation and periphery oxide
    41.
    发明授权
    Method of simultaneous formation of bitline isolation and periphery oxide 有权
    同时形成位线隔离和周边氧化物的方法

    公开(公告)号:US06468865B1

    公开(公告)日:2002-10-22

    申请号:US09723653

    申请日:2000-11-28

    IPC分类号: H01L21336

    CPC分类号: H01L27/11568 H01L27/115

    摘要: One aspect of the present invention relates to a method of forming a non-volatile semiconductor memory device, involving the sequential or non-sequential steps of forming a charge trapping dielectric over a substrate, the substrate having a core region and a periphery region; removing at least a portion of the charge trapping dielectric in the periphery region; forming a gate dielectric in the periphery region; forming buried bitlines in the core region; removing at least a portion of the charge trapping dielectric positioned over the buried bitlines in the core region; forming a bitline isolation over the buried bitlines in the core region; and forming gates in the core region and the periphery region. Another aspect of the present invention relates to increasing the thickness of the gate dielectric in at least a portion of the periphery region simultaneously while forming the bitline isolation.

    摘要翻译: 本发明的一个方面涉及一种形成非挥发性半导体存储器件的方法,涉及在衬底上形成电荷俘获电介质的顺序或非顺序步骤,所述衬底具有芯区域和外围区域; 去除外围区域中的电荷捕获电介质的至少一部分; 在周边区域形成栅电介质; 在核心区域形成掩埋位线; 去除位于芯区域中的掩埋位线之上的电荷捕获电介质的至少一部分; 在核心区域的掩埋位线上形成位线隔离; 并且在芯区域和周边区域中形成栅极。 本发明的另一方面涉及在形成位线隔离的同时在周边区域的至少一部分中增加栅极电介质的厚度。

    Flash memory erase speed by fluorine implant or fluorination
    42.
    发明授权
    Flash memory erase speed by fluorine implant or fluorination 失效
    闪存擦除速度由氟注入或氟化

    公开(公告)号:US06445030B1

    公开(公告)日:2002-09-03

    申请号:US09772600

    申请日:2001-01-30

    IPC分类号: H01L2972

    摘要: One aspect of the present invention relates to a non-volatile semiconductor memory device, containing a silicon substrate; a tunnel oxide layer over the silicon substrate, the tunnel oxide layer comprising fluorine atoms; a charge trapping layer over the tunnel oxide layer; an electrode or poly layer over the charge trapping layer; and source and drain regions within the silicon substrate. Another aspect of the present invention relates to a method of making a non-volatile semiconductor memory cell having improved erase speed, involving the steps of providing a silicon substrate; forming a tunnel oxide layer comprising fluorine atoms over the silicon substrate; and forming non-volatile memory cells over the tunnel oxide layer.

    摘要翻译: 本发明的一个方面涉及一种包含硅衬底的非易失性半导体存储器件; 硅衬底上的隧道氧化物层,所述隧道氧化物层包含氟原子; 在隧道氧化物层上方的电荷捕获层; 在电荷捕获层上方的电极或多晶硅层; 以及硅衬底内的源区和漏区。 本发明的另一方面涉及一种制造具有改善的擦除速度的非易失性半导体存储单元的方法,包括提供硅衬底的步骤; 在所述硅衬底上形成包含氟原子的隧道氧化物层; 以及在所述隧道氧化物层上形成非易失性存储单元。

    Method of forming ONO flash memory devices using low energy nitrogen implantation
    44.
    发明授权
    Method of forming ONO flash memory devices using low energy nitrogen implantation 有权
    使用低能氮注入形成ONO闪存器件的方法

    公开(公告)号:US06362051B1

    公开(公告)日:2002-03-26

    申请号:US09648361

    申请日:2000-08-25

    IPC分类号: H01L21336

    摘要: A gate structure for an ONO flash memory device includes a first layer of silicon oxide on top of a semiconductor substrate, a second layer of silicon oxide, a layer of silicon nitride sandwiched between the two silicon oxide layers, and a control gate on top of the second layer of silicon oxide. Nitrogen is implanted into the first layer of silicon oxide at less than normal energy levels to reduce the amount of damage to the underlying semiconductor substrate. After low energy nitrogen implantation, the semiconductor structure is heated to anneal out the implant damage and to diffuse the implanted nitrogen to the substrate and silicon oxide interface to cause SiN bonds to be formed at that interface. The SiN bonds is desirable because they improve the bonding strength at the interface and the nitrogen remaining in the silicon oxide layer increases the oxide bulk reliability.

    摘要翻译: 用于ONO闪速存储器件的栅极结构包括在半导体衬底的顶部上的第一氧化硅层,第二层氧化硅,夹在两个氧化硅层之间的氮化硅层和位于两个氧化硅层之上的控制栅极 第二层氧化硅。 氮以低于正常能级注入到第一氧化硅层中以减少对下面的半导体衬底的损伤量。 在低能量氮注入之后,半导体结构被加热以退出注入损伤并将注入的氮扩散到衬底和氧化硅界面,以在该界面处形成SiN键。 SiN键是理想的,因为它们改善了界面处的结合强度,并且保留在氧化硅层中的氮增加了氧化物体的可靠性。

    Leakage reducing writeline charge protection circuit
    45.
    发明授权
    Leakage reducing writeline charge protection circuit 有权
    泄漏减少写命令充电保护电路

    公开(公告)号:US09196624B2

    公开(公告)日:2015-11-24

    申请号:US13545469

    申请日:2012-07-10

    CPC分类号: H01L27/11521 H01L21/28273

    摘要: Methods and systems of fabricating a wordline protection structure are described. As described, the wordline protection structure includes a polysilicon structure formed adjacent to a memory core region. The polysilicon structure includes first doped region positioned on a core side of the polysilicon structure and a second doped region positioned on a spine side of the polysilicon structure. An un-doped region positioned between the first and second doped regions. A conductive layer is formed on top of the polysilicon structure and arranged so that it does not contact the un-doped region at either the transition between the first doped region and the un-doped region or the second doped region and un-doped region.

    摘要翻译: 描述了制作字线保护结构的方法和系统。 如上所述,字线保护结构包括与存储器核心区域相邻形成的多晶硅结构。 多晶硅结构包括位于多晶硅结构的芯侧的第一掺杂区和位于多晶硅结构的脊侧的第二掺杂区。 位于第一和第二掺杂区域之间的未掺杂区域。 导电层形成在多晶硅结构的顶部,并且被布置成使得其在第一掺杂区域和未掺杂区域或第二掺杂区域和未掺杂区域之间的过渡处不接触未掺杂区域。

    Methods for fabricating flash memory devices
    48.
    发明授权
    Methods for fabricating flash memory devices 有权
    制造闪存设备的方法

    公开(公告)号:US07416940B1

    公开(公告)日:2008-08-26

    申请号:US11418352

    申请日:2006-05-03

    IPC分类号: H01L21/336

    CPC分类号: H01L27/115 H01L27/11568

    摘要: Methods for fabricating a flash memory device are provided. A method comprises forming a plurality of gate stacks overlying a substrate. Each gate stack comprises a charge trapping layer and a control gate. The control gate is a first distance from the substrate. Adjacent gate stacks are a second distance apart. A cell spacer material layer is deposited and is etched to form a spacer about sidewalls of each gate stack. A source/drain impurity doped region is formed adjacent a first gate stack and a last gate stack. The first distance and the second distance are such that, when a voltage is applied to a gate stack during a READ operation, a fringing field is created between the control gate of the gate stack and the substrate and is sufficient to invert a portion of the substrate between the gate stack and an adjacent gate stack.

    摘要翻译: 提供了制造闪速存储器件的方法。 一种方法包括形成覆盖衬底的多个栅叠层。 每个栅极堆叠包括电荷捕获层和控制栅极。 控制栅极是离基板的第一距离。 相邻的门堆叠是第二个距离。 沉积电池间隔物材料层并被蚀刻以形成围绕每个栅极叠层的侧壁的间隔物。 在第一栅极堆叠和最后一个栅极堆叠附近形成源极/漏极杂质掺杂区域。 第一距离和第二距离使得当在读取操作期间将电压施加到栅极堆叠时,在栅极堆叠的控制栅极和衬底之间产生边缘场,并且足以将一部分 栅极堆叠和相邻栅极堆叠之间的衬底。

    METHOD FOR MANUFACTURING A MEMORY DEVICE
    50.
    发明申请
    METHOD FOR MANUFACTURING A MEMORY DEVICE 审中-公开
    用于制造存储器件的方法

    公开(公告)号:US20080096357A1

    公开(公告)日:2008-04-24

    申请号:US11551535

    申请日:2006-10-20

    IPC分类号: H01L21/336

    CPC分类号: H01L27/115 H01L27/11568

    摘要: A method for manufacturing a memory device that includes using a gap-filling material that inhibits charge coupling between memory devices. A semiconductor material is provided that has an active region and an isolation region. A charge trapping structure is formed over the active region and a layer of semiconductor material is formed over the charge trapping structure and the isolation region. A masking structure having sidewalls is formed on the layer of semiconductor material. Spacers are formed adjacent the sidewalls and the layer of semiconductor material is etched to form one or more conductive strips having opposing sides. The one or more conductive strips are formed over the active region. A dielectric material is formed adjacent to the opposing sides of each conductive strip. The dielectric material serves as a gap-filling material. A layer of semiconductor material is formed over the one or more conductive strips.

    摘要翻译: 一种用于制造存储器件的方法,其包括使用禁止存储器件之间的电荷耦合的间隙填充材料。 提供了具有有源区和隔离区的半导体材料。 在有源区上形成电荷俘获结构,在电荷俘获结构和隔离区上形成一层半导体材料。 在半导体材料层上形成具有侧壁的掩模结构。 间隔件邻近侧壁形成,并且半导体材料层被蚀刻以形成具有相对侧面的一个或多个导电条。 一个或多个导电条形成在有源区上。 在每个导电带的相对侧附近形成电介质材料。 介电材料用作间隙填充材料。 在一个或多个导电条上形成半导体材料层。