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    • 5. 发明授权
    • Method for manufacturing memory cell
    • 制造存储单元的方法
    • US07795088B2
    • 2010-09-14
    • US11753850
    • 2007-05-25
    • Tzu-Hsuan HsuMing-Hsiang HsuehYen-Hao ShihChia-Wei Wu
    • Tzu-Hsuan HsuMing-Hsiang HsuehYen-Hao ShihChia-Wei Wu
    • H01L21/8238
    • H01L21/28282H01L29/42352H01L29/66833H01L29/792
    • A method for manufacturing memory cells is provided. First, a substrate is provided, wherein a liner layer and a material layer have already been sequentially formed on the substrate. Thereafter, a patterned mask layer is formed on the substrate. Then, the patterned mask layer is trimmed. Subsequently, a portion of the material layer, a portion of the liner layer and a portion of the substrate are removed by using the patterned mask layer as a mask to define a plurality of fin-structures in the substrate. Afterward, the patterned mask layer is removed and a plurality of isolation structures among the fin structures is formed. The surface of the isolation structures is lower than that of the fin structures. Following that, charge trapping structures are formed on the substrate, covering the fin structures. Succeeding, a portion of the charge trapping structures is removed to expose the material layer. Then, the treatment process turns the material layer into a protection layer. Subsequently, a gate is formed on the substrate and straddles the protection layer, the charge trapping structures and the fin structure. Afterward, source/drain regions are formed in the fin-structure exposed by both sides of the gate.
    • 提供一种用于制造存储器单元的方法。 首先,提供衬底,其中衬底层和材料层已经顺序形成在衬底上。 此后,在衬底上形成图案化掩模层。 然后,修整图案化的掩模层。 随后,通过使用图案化掩模层作为掩模来去除材料层的一部分,衬垫层的一部分和衬底的一部分,以在衬底中限定多个鳍结构。 之后,去除图案化的掩模层,并且形成翅片结构中的多个隔离结构。 隔离结构的表面比翅片结构的表面低。 之后,在基片上形成电荷俘获结构,覆盖翅片结构。 成功地,去除一部分电荷捕获结构以暴露材料层。 然后,处理过程将材料层转变成保护层。 随后,在基板上形成栅极,跨越保护层,电荷捕获结构和鳍结构。 之后,源极/漏极区域形成在由栅极两侧暴露的鳍状结构中。
    • 7. 发明申请
    • NON-VOLATILE MEMORY AND NON-VOLATILE MEMORY CELL HAVING ASYMMETRICAL DOPED STRUCTURE
    • 非易失性存储器和非易失性存储单元具有非对称掺杂结构
    • US20080128793A1
    • 2008-06-05
    • US12017064
    • 2008-01-21
    • Tzu-Hsuan HsuYen-Hao Shih
    • Tzu-Hsuan HsuYen-Hao Shih
    • H01L29/792
    • H01L27/11568H01L27/115H01L29/792
    • A non-volatile memory cell comprising a substrate, a charge-trapping layer, a control gate, a first conductive state of source and drain, a lightly doped region and a second conductive state of pocket-doped region. The charge-trapping layer and the control gate are disposed over the substrate. A dielectric layer is disposed between the substrate, the charge-trapping layer and the control gate. The source and drain are disposed in the substrate on each side of the charge-trapping layer. The lightly doped region is disposed on the substrate surface between the source and the charge-trapping layer. The pocket-doped region is disposed within the substrate between the drain and the charge-trapping layer. Because there are asymmetrical configuration and different doped conductive states of implant structures, the programming speed of the memory cell is increased, the neighboring cell disturb issue is prevented, and the area occupation of the bit line selection transistor is reduced.
    • 一种非易失性存储单元,包括衬底,电荷俘获层,控制栅极,源极和漏极的第一导电状态,轻掺杂区域和第二导电状态的袋掺杂区域。 电荷捕获层和控制栅极设置在衬底上。 电介质层设置在基板,电荷俘获层和控制栅极之间。 源极和漏极设置在电荷俘获层的每一侧上的衬底中。 轻掺杂区域设置在源极和电荷捕获层之间的衬底表面上。 掺杂阱区域设置在漏极和电荷捕获层之间的衬底内。 由于存在不对称配置和掺杂导体状态的不同,存储单元的编程速度增加,从而防止了相邻单元的干扰问题,并减少了位线选择晶体管的占用面积。
    • 9. 发明申请
    • Electrically erasable programmable read only memory (EEPROM) cell and method for making the same
    • 电可擦除可编程只读存储器(EEPROM)单元及其制作方法
    • US20060284243A1
    • 2006-12-21
    • US11146777
    • 2005-06-06
    • Tzu-Hsuan HsuYen-Hao ShihMing-Hsiu Lee
    • Tzu-Hsuan HsuYen-Hao ShihMing-Hsiu Lee
    • H01L29/792
    • H01L29/7885H01L29/7887H01L29/7923Y10S257/90
    • An asymmetrically doped memory cell has first and second N+ doped junctions on a P substrate. A composite charge trapping layer is disposed over the P substrate and between the first and the second N+ doped junctions. A N− doped region is positioned adjacent to the first N+ doped junction and under the composite charge trapping layer. A P− doped region is positioned adjacent to the second N+ doped junction and under the composite charge trapping layer. The asymmetrically doped memory cell will store charges at the end of the composite charge trapping layer that is above the P− doped region. The asymmetrically doped memory cell can function as an electrically erasable programmable read only memory cell, and is capable of multiple level cell operations. A method for making an asymmetrically doped memory cell is also described.
    • 不对称掺杂的存储单元在P衬底上具有第一和第二N +掺杂结。 复合电荷捕获层设置在P衬底上并且在第一和第二N +掺杂结之间。 N掺杂区域邻近第一N +掺杂结并位于复合电荷俘获层下方。 P-掺杂区域邻近第二N +掺杂结并位于复合电荷俘获层下方。 非对称掺杂的存储单元将在复合电荷捕获层的末端在P掺杂区域之上存储电荷。 非对称掺杂的存储单元可以用作电可擦除可编程只读存储器单元,并且能够进行多级单元操作。 还描述了制造非对称掺杂的存储单元的方法。