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    • 72. 发明授权
    • Flash memory device and method of forming the same with improved gate breakdown and endurance
    • 闪存器件及其形成方法具有改进的栅极击穿和耐久性
    • US07067388B1
    • 2006-06-27
    • US10819162
    • 2004-04-07
    • Angela HuiYider Wu
    • Angela HuiYider Wu
    • H04L29/02
    • H01L21/28273H01L29/7881
    • The present invention provides a flash memory device and method for making the same having a floating gate structure with a semiconductor substrate and shallow trench isolation (STI) structure formed in the substrate. A first polysilicon layer is formed over the substrate and the STI structure. The recess formed within the first polysilicon layer is over the STI structure and extends through the first polysilicon layer to the STI structure. An oxide fill is provided within the recess and is etched back. ONO (oxide-nitride-oxide) layer conformally covers the oxide fill and the first polysilicon layer. The second polysilicon layer covers the ONO layer. The oxide fill within the recess provides a minimum spacing between the second polysilicon layer and the corner of the STI regions, thereby avoiding the creation of a weak spot and reducing the risk of gate breakdown, gate leakage, and improving device reliability.
    • 本发明提供了一种闪存器件及其制造方法,其具有在衬底中形成的具有半导体衬底和浅沟槽隔离(STI)结构的浮动栅极结构。 在衬底和STI结构上形成第一多晶硅层。 形成在第一多晶硅层内的凹槽在STI结构之上并且延伸穿过第一多晶硅层到STI结构。 在凹槽内设置氧化物填充物并被回蚀。 ONO(氧化物 - 氧化物 - 氧化物)层保形地覆盖氧化物填充物和第一多晶硅层。 第二多晶硅层覆盖ONO层。 凹陷内的氧化物填充提供了第二多晶硅层与STI区域的拐角之间的最小间隔,从而避免了产生弱点并降低了栅极击穿,栅极泄漏和提高器件可靠性的风险。
    • 77. 发明授权
    • Hard mask removal process including isolation dielectric refill
    • 硬掩模去除工艺包括隔离介质再填充
    • US06607925B1
    • 2003-08-19
    • US10165837
    • 2002-06-06
    • Unsoon KimDawn M. HopperYider WuKrishnashree Achuthan
    • Unsoon KimDawn M. HopperYider WuKrishnashree Achuthan
    • H01L2100
    • H01L21/76224H01L21/0337H01L21/31116H01L21/32139
    • A method for repairing an isolation dielectric damaged during a semiconductor fabrication process is disclosed in which a hard mask material is used to pattern a first material, the first material having openings therein exposing isolation regions comprising a first isolation dielectric layer. The method includes etching the hard mask material from the first material, wherein the etch creates gouges in the first isolation dielectric layer, and depositing a second layer of isolation dielectric over the first material, wherein the second isolation dielectric layer fills the gouges in the first isolation dielectric layer. The method further includes polishing on the second layer of isolation dielectric to remove the second layer of isolation dielectric from the first material.
    • 公开了一种用于修复在半导体制造工艺期间损坏的隔离电介质的方法,其中使用硬掩模材料来图案化第一材料,其中在其中具有开口的第一材料暴露出包括第一隔离介电层的隔离区域。 该方法包括从第一材料蚀刻硬掩模材料,其中蚀刻在第一隔离电介质层中产生沟槽,以及在第一材料上沉积第二隔离电介质层,其中第二隔离电介质层填充第一隔离电介质层中的沟槽 隔离介电层。 该方法还包括在第二层隔离电介质上抛光以从第一材料去除第二隔离电介质层。
    • 79. 发明授权
    • Erase method for dual bit virtual ground flash
    • 双位虚拟接地闪存的擦除方法
    • US06512701B1
    • 2003-01-28
    • US09886861
    • 2001-06-21
    • Darlene G. HamiltonKulachet TanpairojYider Wu
    • Darlene G. HamiltonKulachet TanpairojYider Wu
    • G11C1604
    • G11C16/16G11C16/0475G11C16/0491
    • A system and methodology is provided for verifying erasure of one or more dual bit virtual ground memory cells in a memory device, such as a flash memory. Each of the dual bits have a first or normal bit and a second or complimentary bit associated with the first or normal bit. The system and methodology include verifying and erasure of both a normal bit and a complimentary bit of the cell. The erasure includes applying a set of erase pulses to the normal bit and complimentary bit in a single dual bit cell. The set of erase pulses is comprised of a two sided erase pulse to both sides of the bits in the cell or transistor junction followed by a first single sided erase pulse to one side and a second single sided erase pulse to the other side of transistor junction.
    • 提供了用于验证擦除存储器设备(例如闪存)中的一个或多个双位虚拟接地存储器单元的系统和方法。 每个双位具有与第一或正常位相关联的第一或正常位和第二或补充位。 系统和方法包括验证和擦除单元的正常位和互补位。 擦除包括将一组擦除脉冲施加到单个双位单元中的正常位和补充位。 该组擦除脉冲由单元或晶体管结中的位的两侧的双侧擦除脉冲组成,之后是一侧的第一单侧擦除脉冲和到晶体管结的另一侧的第二单侧擦除脉冲 。
    • 80. 发明授权
    • Source drain implant during ONO formation for improved isolation of SONOS devices
    • 在ONO形成期间的源极漏极注入,以改善SONOS器件的隔离
    • US06436768B1
    • 2002-08-20
    • US09893279
    • 2001-06-27
    • Jean Yee-Mei YangMark T. RamsbeyEmmanuil Manos LingunisYider WuTazrien KamalYi HeEdward HsiaHidehiko Shiraiwa
    • Jean Yee-Mei YangMark T. RamsbeyEmmanuil Manos LingunisYider WuTazrien KamalYi HeEdward HsiaHidehiko Shiraiwa
    • H01L21336
    • H01L21/2652H01L21/2658H01L27/11568H01L29/66833
    • One aspect of the present invention relates to a method of forming a SONOS type non-volatile semiconductor memory device, involving forming a first layer of a charge trapping dielectric on a semiconductor substrate; forming a second layer of the charge trapping dielectric over the first layer of the charge trapping dielectric on the semiconductor substrate; optionally at least partially forming a third layer of the charge trapping dielectric over the second layer of the charge trapping dielectric on the semiconductor substrate; optionally removing the third layer of the charge trapping dielectric; forming a source/drain mask over the charge trapping dielectric; implanting a source/drain implant through the charge trapping dielectric into the semiconductor substrate; optionally removing the third layer of the charge trapping dielectric; and one of forming the third layer of the charge trapping dielectric over the second layer of the charge trapping dielectric on the semiconductor substrate, reforming the third layer of the charge trapping dielectric over the second layer of the charge trapping dielectric on the semiconductor substrate, or forming additional material over the third layer of the charge trapping dielectric.
    • 本发明的一个方面涉及一种形成SONOS型非易失性半导体存储器件的方法,包括在半导体衬底上形成电荷俘获电介质的第一层; 在所述半导体衬底上的所述电荷俘获电介质的所述第一层上形成所述电荷俘获电介质的第二层; 可选地至少部分地在所述半导体衬底上的所述电荷俘获电介质的所述第二层上形成所述电荷俘获电介质的第三层; 任选地去除电荷俘获电介质的第三层; 在电荷俘获电介质上形成源极/漏极掩模; 将源极/漏极注入物通过电荷俘获电介质注入到半导体衬底中; 任选地去除电荷俘获电介质的第三层; 以及在半导体衬底上的电荷俘获电介质的第二层上形成电荷俘获电介质的第三层之一,在半导体衬底上的电荷俘获电介质的第二层上重整第三层电荷俘获电介质,或 在电荷俘获电介质的第三层上形成附加材料。