Fabricating a single level merged EEPROM cell having an ONO memory stack
substantially spaced from the source region
    2.
    发明授权
    Fabricating a single level merged EEPROM cell having an ONO memory stack substantially spaced from the source region 失效
    制造具有与源区域基本间隔开的ONO存储器堆栈的单级合并EEPROM单元

    公开(公告)号:US5120672A

    公开(公告)日:1992-06-09

    申请号:US401470

    申请日:1989-08-29

    摘要: An electrically, programmable read-only memory cell is formed at a face (10) of a semiconductor layer (12). This cell comprises a doped drain region (36) and a doped source region (38) that are spaced from each other by a gate region (40). An ONO memory stack (28) is formed to extend over a portion of the gate region (40) that adjoins the drain region (36). The memory stack (28) is substantially spaced from the source region (38). A select gate insulator layer (30) is formed over the remainder of the gate region (40), and is preferably of the same thickness as the memory stack (28). A suitable gate conductor (32) is then deposited over insulator layers (26, 30). By being substantially spaced from source region (38), the memory stack (28) of the invention avoids the formation of ONO hole traps.

    摘要翻译: 在半导体层(12)的面(10)处形成电可编程只读存储单元。 该单元包括通过栅极区域(40)彼此间隔开的掺杂漏极区域(36)和掺杂源极区域(38)。 ONO存储器堆叠(28)形成为在与漏极区域(36)相邻的栅极区域(40)的一部分上延伸。 存储器堆叠(28)与源极区域(38)基本间隔开。 选择栅极绝缘体层(30)形成在栅极区域(40)的其余部分上,并且优选地具有与存储器堆叠(28)相同的厚度。 然后将合适的栅极导体(32)沉积在绝缘体层(26,30)上。 通过与源极区域(38)基本间隔开,本发明的存储器堆叠(28)避免了ONO孔阱的形成。

    X-cell EEPROM array
    3.
    发明授权
    X-cell EEPROM array 失效
    X-cell EEPROM阵列

    公开(公告)号:US4839705A

    公开(公告)日:1989-06-13

    申请号:US133709

    申请日:1987-12-16

    摘要: An X-cell EEPROM array includes a plurality of common source regions (50) that each border on four gate regions (46), both formed at a face of a semiconductor substrate (10). Each gate region (46) further adjoins a common drain region (52). Each drain region (52) is a common drain for two EEPROM select and memory transistors. A common erase region (54) is implanted into the semiconductor layer (10) in a position remote from the source regions (50) and the drain regions (52). Four floating gate electrodes (40) extend over tunnel windows (22) that are formed on the semiconductor layer (10) in positions adjacent a single erase region (54). An integral contact (64) is made through multilevel oxide (56, 58) from a metal erase line (70) to each erase region (54).

    摘要翻译: X单元EEPROM阵列包括在半导体衬底(10)的表面上形成的多个公共源极区域(50),每个共同源极区域(50)在四个栅极区域(46)上边界。 每个栅极区域(46)还与公共漏极区域(52)相邻。 每个漏极区域(52)是两个EEPROM选择和存储晶体管的公共漏极。 在远离源极区域(50)和漏极区域(52)的位置,将公共擦除区域(54)注入到半导体层(10)中。 四个浮栅电极(40)在与单个擦除区域(54)相邻的位置上形成在半导体层(10)上的隧道窗(22)上延伸。 通过从金属擦除线(70)到每个擦除区域(54)的多层氧化物(56,58)制成整体触点(64)。

    EEPROM including programming electrode extending through the control
gate electrode
    4.
    发明授权
    EEPROM including programming electrode extending through the control gate electrode 失效
    EEPROM包括延伸通过控制栅电极的编程电极

    公开(公告)号:US4853895A

    公开(公告)日:1989-08-01

    申请号:US126443

    申请日:1987-11-30

    CPC分类号: H01L29/7886

    摘要: An electrically erasable, programmable read only memory (EEPROM) having an erase window directly overlying both a control gate layer (24) and a column line (12) is disclosed. Column lines (12) are implanted into a semiconductor substrate (16) and covered with a first insulating layer (18). A floating gate layer (20) overlies the first insulating layer (18) and is covered with a second insulating layer (22). The control gate layer (24) overlies the second insulating layer (22) and is covered by a third insulating layer (26). A passage (28) extends through the third insulating layer (26), control gate layer (24) and second insulating layer (22) and contains a sidewall insulator (30) on walls thereof. A tunnel oxide (32) resides within the passage (28) and is contacted by a programming electrode layer (34) which additionally overlies the third insulating layer (26) and fills the passage (28).

    摘要翻译: 公开了一种具有直接覆盖控制栅极层(24)和列线(12)两者的擦除窗口的电可擦除可编程只读存储器(EEPROM)。 列线(12)注入到半导体衬底(16)中并被第一绝缘层(18)覆盖。 浮动栅极层(20)覆盖在第一绝缘层(18)上并被第二绝缘层(22)覆盖。 控制栅极层(24)覆盖第二绝缘层(22)并由第三绝缘层(26)覆盖。 通道(28)延伸穿过第三绝缘层(26),控制栅极层(24)和第二绝缘层(22),并在其壁上包含侧壁绝缘体(30)。 隧道氧化物(32)位于通道(28)内,并且由编程电极层(34)接触,编程电极层(34)另外覆盖在第三绝缘层(26)上并填充通道(28)。

    Trench capacitor DRAM cell with diffused bit lines adjacent to a trench
    5.
    发明授权
    Trench capacitor DRAM cell with diffused bit lines adjacent to a trench 失效
    具有与沟槽相邻的扩散位线的沟槽电容器DRAM单元

    公开(公告)号:US5105245A

    公开(公告)日:1992-04-14

    申请号:US287937

    申请日:1988-12-21

    IPC分类号: H01L27/108

    CPC分类号: H01L27/10829

    摘要: A plurality of trenches (26, 28) of a DRAM cell array formed in a (P-) epitaxial layer (11) and a silicon substrate (12), and storage layers (38, 40) are grown on the sidewalls (34, 36) and bottom (not shown) of the trenches (26, 28). Highly doped polysilicon capacitor electrodes (42, 44) are formed in the trenches (26, 28). Sidewall oxide filaments (50, 54) and in situ doped sidewall conductive filaments (66, 68) are formed and thermal cycles are used to diffuse dopant from sidewall conductive filaments (66, 68) into upper sidewall portions (62, 64) to form diffused source regions (70, 72) of pass gate transistors (90) for each cell.

    摘要翻译: 形成在(P-)外延层(11)和硅衬底(12)中的DRAM单元阵列的多个沟槽(26,28)和存储层(38,40)生长在侧壁 36)和底部(未示出)的沟槽(26,28)。 在沟槽(26,28)中形成高掺杂多晶硅电容器电极(42,44)。 形成侧壁氧化物细丝(50,54)和原位掺杂的侧壁导电细丝(66,68),并且使用热循环来将掺杂剂从侧壁导电细丝(66,68)扩散到上侧壁部分(62,64)中以形成 用于每个单元的通过栅极晶体管(90)的扩散源极区(70,72)。

    Trench capacitor DRAM cell and method of manufacture
    7.
    发明授权
    Trench capacitor DRAM cell and method of manufacture 失效
    沟槽电容器DRAM单元及其制造方法

    公开(公告)号:US5225363A

    公开(公告)日:1993-07-06

    申请号:US823804

    申请日:1992-01-15

    IPC分类号: H01L27/108

    CPC分类号: H01L27/10829

    摘要: A plurality of trenches (26, 28) of a DRAM cell array formed in a (P-) epitaxial layer (11) and a silicon substrate (12), and storage layers (38, 40) are grown on the sidewalls (34, 36) and bottom (not shown) of the trenches (26, 28). Highly doped polysilicon capacitor electrodes (42, 44) are formed in the trenches (26, 28). Sidewall oxide filaments (50, 54) and in situ doped sidewall conductive filaments (66, 68) are formed and thermal cycles are used to diffuse dopant from sidewall conductive filaments (66, 68) into upper sidewall portions (62, 64) to form diffused source regions (70, 72) of pass gate transistors (90) for each cell.

    摘要翻译: 形成在(P-)外延层(11)和硅衬底(12)中的DRAM单元阵列的多个沟槽(26,28)和存储层(38,40)生长在侧壁 36)和底部(未示出)的沟槽(26,28)。 在沟槽(26,28)中形成高掺杂多晶硅电容器电极(42,44)。 形成侧壁氧化物细丝(50,54)和原位掺杂的侧壁导电细丝(66,68),并且使用热循环来将掺杂剂从侧壁导电细丝(66,68)扩散到上侧壁部分(62,64)中以形成 用于每个单元的通过栅极晶体管(90)的扩散源极区(70,72)。

    Non-volatile semiconductor memory
    8.
    发明授权
    Non-volatile semiconductor memory 失效
    非易失性半导体存储器

    公开(公告)号:US5168334A

    公开(公告)日:1992-12-01

    申请号:US641803

    申请日:1991-01-16

    摘要: A small-area single-transistor EEPROM memory cell includes buried bit lines (44,46) extending through the array and connecting together many memory cells. Formed above a channel area (25) and between the bit lines (44,46) are oxide-nitride-oxide layers (50,52,54) for providing isolation between overlying polysilicon word lines (56, 66) and the underlying conduction channel (25). The nitride layer (52) provides the charge retention mechanism for programming the memory cell. The word lines (56, 66) provide electrical contact to a number of memory cells in the row. Electrical contact is made to the word lines (56, 66) by metal contacts (68, 70), and to the bit lines (44,46) by metal contacts (72, 74) at the array periphery, thereby avoiding metal contacts to every memory cell of the array. A EEPROM memory cell of 4-5.2 microns can be fabricated.

    摘要翻译: 小面积单晶体管EEPROM存储单元包括延伸穿过阵列并连接在一起的许多存储单元的掩埋位线(44,46)。 形成在通道区域(25)上方和位线(44,46)之间的是氧化物 - 氮化物 - 氧化物层(50,52,54),用于在叠加的多晶硅字线(56,66)和下层导电沟道 (25)。 氮化物层(52)提供用于对存储单元进行编程的电荷保留机制。 字线(56,66)向行中的多个存储单元提供电接触。 通过金属触点(68,70)对字线(56,66)进行电接触,并且通过阵列周边的金属触点(72,74)与位线(44,46)进行电接触,从而避免金属接触 数组的每个存储单元。 可以制造4-5.2微米的EEPROM存储单元。

    Method of making high density EEPROM
    9.
    发明授权
    Method of making high density EEPROM 失效
    制造高密度EEPROM的方法

    公开(公告)号:US4980309A

    公开(公告)日:1990-12-25

    申请号:US366795

    申请日:1989-06-14

    IPC分类号: H01L29/788

    CPC分类号: H01L29/7886

    摘要: An electrically erasable, programmable read only memory (EEPROM) having an erase window directly overlying both a control gate layer (24) and a column line (12) is disclosed. Column lines (12) are implanted into a semiconductor substrate (16) and covered with a first insulating layer (18). A floating gate layer (20) overlies the first insulating layer (18) and is covered with a second insulating layer (22). The control gate layer (24) overlies the control insulating layer (22) and is covered by a third insulating layer (26). A passage (28) extends through the third insulating layer (26), control gate layer (24) and second insulating layer (22) and contains a sidewall insulator (30) on walls thereof. A tunnel oxide (32) resides within the passage (28) and is contacted by a programming electrode layer (34) which additionally overlies the third insulating layer (26) and fills the passage (28).

    摘要翻译: 公开了一种具有直接覆盖控制栅极层(24)和列线(12)两者的擦除窗口的电可擦除可编程只读存储器(EEPROM)。 列线(12)注入到半导体衬底(16)中并被第一绝缘层(18)覆盖。 浮动栅极层(20)覆盖在第一绝缘层(18)上并被第二绝缘层(22)覆盖。 控制栅极层(24)覆盖控制绝缘层(22)并由第三绝缘层(26)覆盖。 通道(28)延伸穿过第三绝缘层(26),控制栅极层(24)和第二绝缘层(22),并在其壁上包含侧壁绝缘体(30)。 隧道氧化物(32)位于通道(28)内,并且由编程电极层(34)接触,编程电极层(34)另外覆盖在第三绝缘层(26)上并填充通道(28)。

    Unitary floating-gate electrode with both N-type and P-type gates
    10.
    发明授权
    Unitary floating-gate electrode with both N-type and P-type gates 有权
    具有N型和P型门的单一浮栅电极

    公开(公告)号:US08716083B2

    公开(公告)日:2014-05-06

    申请号:US13359253

    申请日:2012-01-26

    IPC分类号: H01L21/336

    摘要: An analog floating-gate electrode in an integrated circuit, and method of fabricating the same, in which trapped charge can be stored for long durations. The analog floating-gate electrode is formed in a polycrystalline silicon gate level, and includes n-type and p-type doped portions serving as gate electrodes of n-channel and p-channel MOS transistors, respectively; a plate of a metal-to-poly storage capacitor; and a plate of poly-to-active tunneling capacitors. Silicide-block silicon dioxide blocks the formation of silicide cladding on the electrode, while other polysilicon structures in the integrated circuit are silicide-clad. An opening at the surface of the analog floating-gate electrode, at the location at which n-type and p-type doped portions of the floating gate electrode abut, allow formation of silicide at that location, shorting the p-n junction.

    摘要翻译: 集成电路中的模拟浮栅电极及其制造方法,其中捕获的电荷可以长时间存储。 模拟浮栅电极形成为多晶硅栅极电平,并且分别包括用作n沟道和p沟道MOS晶体管的栅电极的n型和p型掺杂部分。 金属对多晶硅储存电容器的板; 以及一块多至多层隧道电容器。 硅化物阻挡二氧化硅阻止在电极上形成硅化物包层,而集成电路中的其它多晶硅结构是硅化物包覆的。 在模拟浮栅电极的表面处,在浮栅电极的n型和p型掺杂部分邻接的位置处的开口允许在该位置形成硅化物,使p-n结短路。