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    • 4. 发明授权
    • Top floating-gate flash EEPROM structure
    • 顶部浮栅闪存EEPROM结构
    • US5625213A
    • 1997-04-29
    • US500104
    • 1995-07-10
    • Gary HongChen-Chiu Hsue
    • Gary HongChen-Chiu Hsue
    • H01L21/336H01L21/8247H01L29/788
    • H01L29/66825H01L27/11517
    • A method for forming, and a resultant structure of, a top floating gate FLASH EEPROM cell are described. There is a first insulating structure over a silicon substrate, whereby the first insulating structure is a gate oxide. A first conductive structure is formed over the first insulating structure, whereby the first conductive structure is a control gate. There is a first insulating layer over the surfaces of the first conductive structure, whereby the first insulating layer is an interpoly dielectric. There is a second conductive structure formed over the first insulating layer and over a portion of the silicon substrate adjacent to the first insulating structure, whereby the second conductive structure is a floating gate. A second insulating layer is formed between the silicon substrate and the second conductive structure, whereby the second insulating layer is a tunnel oxide. Active regions in the silicon substrate, implanted with a conductivity-imparting dopant, are formed under the second insulating layer but are horizontally a distance from the first insulating structure.
    • 描述了用于形成顶部浮置栅极FLASH EEPROM单元的方法和结果。 在硅衬底上存在第一绝缘结构,由此第一绝缘结构是栅极氧化物。 在第一绝缘结构上形成第一导电结构,由此第一导电结构是控制栅极。 在第一导电结构的表面上存在第一绝缘层,由此第一绝缘层是互聚电介质。 在第一绝缘层上形成第二导电结构,并且在与硅衬底相邻的第一绝缘结构的一部分之上形成第二导电结构,由此第二导电结构是浮栅。 在硅衬底和第二导电结构之间形成第二绝缘层,由此第二绝缘层是隧道氧化物。 在第二绝缘层的下方形成硅衬底中注入导电性赋予剂的有源区,但与水平方向距离第一绝缘结构。
    • 5. 发明授权
    • Process for making a mask ROM with self-aligned coding technology
    • 用自制编码技术制作掩模ROM的过程
    • US5472898A
    • 1995-12-05
    • US287949
    • 1994-08-09
    • Gary HongChen-Chiu Hsue
    • Gary HongChen-Chiu Hsue
    • H01L21/8246H01L21/265
    • H01L27/1126
    • A self-aligned coding process for mask ROM is disclosed. First, a substrate having a plurality of bit-lines formed therein, a gate oxide layer formed on the bit-lines, and a plurality of word-lines formed on the gate oxide, which together construct an array of memory cells, is provided. Next, a barrier layer is formed on the word-lines. A silicon dioxide layer is formed on the gate oxide between the word-lines by using liquid phase deposition, wherein the thickness of the silicon dioxide layer is larger than that of the word-lines. Then, the barrier layer is removed. A mask layer is formed on the substrate exposing parts of the memory cells that will be programmed. Finally, impurities are implanted into the substrate not covered by the mask layer and the silicon dioxide layer to make the memory cells that will be programmed operating in a first state, and leave other non-programmed memory cells operating in a second state.
    • 公开了一种用于掩模ROM的自对准编码处理。 首先,提供一种形成在其中的多个位线的衬底,形成在位线上的栅极氧化层,以及形成在栅极氧化物上的多个字线,这些字线一起构成存储单元阵列。 接下来,在字线上形成阻挡层。 通过使用液相沉积在字线之间的栅极氧化物上形成二氧化硅层,其中二氧化硅层的厚度大于字线的厚度。 然后,去除阻挡层。 在衬底上形成露出将被编程的存储器单元的部分的掩模层。 最后,将杂质注入到未被掩模层和二氧化硅层覆盖的衬底中,以使将被编程的存储器单元在第一状态下工作,并使其它非编程存储器单元在第二状态下工作。
    • 8. 发明授权
    • High coupling ratio of flash memory
    • 闪存的高耦合比
    • US5585656A
    • 1996-12-17
    • US435190
    • 1995-05-05
    • Chen-Chiu HsueGary Hong
    • Chen-Chiu HsueGary Hong
    • H01L21/28H01L21/336H01L27/115H01L29/788
    • H01L29/66825H01L21/28141
    • A new method of fabricating a high coupling ratio Flash EEPROM memory cell is achieved. A layer of silicon dioxide is provided over the surface of a semiconductor substrate. A layer of silicon nitride is deposited over the silicon dioxide layer and patterned. The silicon dioxide layer not covered by the patterned silicon nitride layer is removed, thereby exposing portions of the substrate. A tunnel oxide layer is grown on the exposed portions of the semiconductor substrate. Silicon nitride spacers are formed on the sidewalls of the patterned silicon nitride layer. Ions are implanted into the substrate using the silicon nitride layer and spacers as a mask to form implanted regions within the semiconductor substrate. The semiconductor substrate is oxidized where the implanted regions have been formed leaving the thin tunnel oxide only under the silicon nitride spacers. The silicon nitride layer and spacers are removed. A first polysilicon layer is deposited over the surface of the silicon dioxide and tunnel oxide layers and patterned to form a floating gate. An interpoly dielectric layer is deposited over the patterned first polysilicon layer followed by a second polysilicon layer. The second polysilicon layer is patterned to form a control gate. Passivation and metallization complete the fabrication of the memory cell with improved coupling ratio.
    • 实现了一种制造高耦合比闪存EEPROM存储单元的新方法。 在半导体衬底的表面上设置一层二氧化硅。 一层氮化硅沉积在二氧化硅层上并构图。 未被图案化氮化硅层覆盖的二氧化硅层被去除,从而暴露衬底的部分。 在半导体衬底的暴露部分上生长隧道氧化物层。 在图案化氮化硅层的侧壁上形成氮化硅间隔物。 使用氮化硅层和间隔物作为掩模将离子注入到衬底中,以在半导体衬底内形成注入区域。 半导体衬底被氧化,其中已经形成注入区域,仅在氮化硅间隔物之下留下薄的隧道氧化物。 去除氮化硅层和间隔物。 第一多晶硅层沉积在二氧化硅和隧道氧化物层的表面上并被图案化以形成浮栅。 在图案化的第一多晶硅层之后沉积多层介电层,随后是第二多晶硅层。 图案化第二多晶硅层以形成控制栅极。 钝化和金属化完成了具有改进的耦合比的存储器单元的制造。
    • 9. 发明授权
    • ROM coding process with self-aligned implantation and the ROM produced
thereby
    • 具有自对准植入的ROM编码处理和由此产生的ROM
    • US5576235A
    • 1996-11-19
    • US342630
    • 1994-11-21
    • Gary HongChen-Chiu HsueChen-Hui Chung
    • Gary HongChen-Chiu HsueChen-Hui Chung
    • H01L21/8246H01L27/112
    • H01L27/1126H01L27/112
    • A ROM coding method with self-aligned implantation. First, a non-coded mask ROM with a silicon substrate, a plurality of bit-lines formed in the substrate, a gate oxide layer formed on the bit-lines, and a plurality of word-lines formed on the gate oxide, which together form arrays of memory cells, is provided. Next, an aligning layer is formed above the word-lines. A photoresist is thereafter coated on the surface of the aligning layer. Then, portions of the photoresist not covered by a mask pattern are etched away to the aligning layer so as to provide openings exposing portions of the memory cells that will be programmed to operate in a first conduction state. Portions of the aligning layer exposed through the openings are then removed, after which impurities are implanted through the openings and into the substrate to enable the memory cells that are to operate in the first conduction state, and leave other non-programmed memory cells operating in a second conduction state.
    • 具有自对准植入的ROM编码方法。 首先,具有硅衬底的非编码掩模ROM,在衬底中形成的多个位线,形成在位线上的栅极氧化层,以及形成在栅极氧化物上的多个字线,其一起 提供了存储单元的阵列。 接下来,在字线上形成对准层。 然后将光致抗蚀剂涂覆在对准层的表面上。 然后,未被掩模图案覆盖的部分光致抗蚀剂被蚀刻掉到对准层上,以便提供露出将被编程为在第一导通状态下操作的存储单元部分的开口。 然后去除通过开口暴露的对准层的部分,之后通过开口注入杂质并进入衬底,以使得能够在第一导通状态下操作的存储器单元,并且使其他非编程存储器单元在 第二导通状态。
    • 10. 发明授权
    • Self-aligned coding process for mask ROM
    • 掩模ROM的自对准编码过程
    • US5529942A
    • 1996-06-25
    • US264738
    • 1994-06-23
    • Gary HongChen-Chiu Hsue
    • Gary HongChen-Chiu Hsue
    • H01L21/8246H01L21/266
    • H01L27/1126
    • A ROM coding method with a self-aligned implantation. First, a non-coded mask ROM with a semiconductor substrate, a plurality of bit-lines formed on the semiconductor substrate, a gate oxide formed over the semiconductor substrate and the bit-line, and a plurality of word-lines formed above the gate oxide, which together form memory cells, is provided. Before the word-lines are formed, a barrier material is applied over spacing strips between the locations where the word-lines are to be formed. The barrier material serves as a mask through which impurities are implanted into the substrate to selectively program the memory cells to operate in either a first or second conduction state.
    • 具有自对准植入的ROM编码方法。 首先,具有半导体衬底的非编码掩模ROM,形成在半导体衬底上的多个位线,形成在半导体衬底上的栅极氧化物和位线,以及形成在栅极上方的多个字线 一起形成记忆单元的氧化物。 在形成字线之前,在要形成字线的位置之间的间隔条上施加阻挡材料。 阻挡材料用作掩模,通过该掩模将杂质注入到衬底中以选择性地对存储器单元进行编程以在第一或第二导通状态下工作。