EEPROM including programming electrode extending through the control
gate electrode
    13.
    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 and method of manufacture
    15.
    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
    16.
    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
    17.
    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)。