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    • 31. 发明授权
    • Method to combine high voltage device and salicide process
    • 高压装置与自动化处理相结合的方法
    • US6110782A
    • 2000-08-29
    • US195651
    • 1998-11-19
    • Wen-Ting ChuChuan-Li ChangMing-Chon HoChang-Song LinDi-Son Kwo
    • Wen-Ting ChuChuan-Li ChangMing-Chon HoChang-Song LinDi-Son Kwo
    • H01L21/8234H01L21/8247
    • H01L27/11526H01L21/823462H01L27/11541
    • A method for integrating salicide and high voltage device processes in the fabrication of high and low voltage devices on a single wafer is described. Isolation areas are formed on a semiconductor substrate surrounding and electrically isolating a low voltage device area from a high voltage device area. A gate oxide layer is grown in the device areas. A polysilicon layer is deposited overlying the gate oxide layer and isolation areas. A first photomask is formed over a portion of the high voltage device area wherein the first photomask also completely covers the low voltage device area. The polysilicon layer is etched away where it is not covered by the photomask to form a high voltage device. Ions are implanted to form lightly doped source and drain regions within the semiconductor substrate adjacent to the high voltage device wherein the first photomask protects the polysilicon layer in the low voltage device area from the ions. The first photomask is removed. A second photomask is formed over a portion of the low voltage device area where a gate electrode is to be formed wherein the second photomask also completely covers the high voltage device area. The polysilicon layer not covered by the second photomask is etched away to form the gate electrode. The second photomask is removed. The low voltage and high voltage area devices are silicided and the fabrication of the integrated circuit device is completed.
    • 描述了在单个晶片上制造高电压和低压器件中的自对准硅化物和高电压器件工艺的集成方法。 在半导体衬底上形成隔离区域,该半导体衬底围绕低电压器件区域和高电压器件区域电隔离。 在器件区域中生长栅极氧化物层。 沉积覆盖栅极氧化物层和隔离区的多晶硅层。 第一光掩模形成在高电压器件区域的一部分上,其中第一光掩模也完全覆盖低电压器件区域。 多晶硅层被蚀刻掉,其未被光掩模覆盖以形成高压器件。 植入离子以在与高压器件相邻的半导体衬底内形成轻掺杂的源极和漏极区,其中第一光掩模保护低电压器件区域中的多晶硅层与离子。 第一个光掩模被删除。 第二光掩模形成在要形成栅电极的低电压器件区域的一部分上,其中第二光掩模也完全覆盖高电压器件区域。 蚀刻掉未被第二光掩模覆盖的多晶硅层以形成栅电极。 第二个光掩模被删除。 低电压和高电压区域的器件被硅化,并且完成了集成电路器件的制造。
    • 38. 发明授权
    • Method and system for forming source regions in memory devices
    • 用于在存储器件中形成源区的方法和系统
    • US07227218B2
    • 2007-06-05
    • US11094035
    • 2005-03-30
    • Yi-Shing ChangWen-Ting Chu
    • Yi-Shing ChangWen-Ting Chu
    • H01L29/788
    • H01L27/11521H01L27/115
    • A memory device and the method for manufacturing same is disclosed. The device comprises a first oxide layer on top of a substrate, a floating gate layer on top of the first oxide layer, a second oxide layer over the floating gate layer, wherein the second oxide layer and the floating gate layer have a first opening and a second opening respectively, and wherein the width of second opening is bigger than the width of the narrowest region of the first opening so that the floating gate layer is pulled back horizontally underneath the second oxide layer. A source region is in the substrate underneath the first oxide layer, and a third oxide layer fills in the first and second openings conforming to the contour thereof, wherein the third oxide has a third opening to reach a portion of the source region. Further, a control gate material fills in the third opening.
    • 公开了一种存储器件及其制造方法。 该器件包括在衬底的顶部上的第一氧化物层,在第一氧化物层的顶部上的浮动栅极层,浮置栅极层上的第二氧化物层,其中第二氧化物层和浮动栅极层具有第一开口和 第二开口,其中第二开口的宽度大于第一开口的最窄区域的宽度,使得浮栅层在第二氧化物层下方被水平地拉回。 源区域位于第一氧化物层下方的衬底中,并且第三氧化物层填充符合其轮廓的第一和第二开口,其中第三氧化物具有到达源极区域的一部分的第三开口。 此外,控制门材料填充在第三开口中。