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    • 66. 发明授权
    • Method of fabricating a floating gate for split gate flash memory
    • 制造分闸门闪存的浮栅的方法
    • US06649473B1
    • 2003-11-18
    • US10330777
    • 2002-12-27
    • Chi-Hui LinChung-Lin Huang
    • Chi-Hui LinChung-Lin Huang
    • H01L21336
    • H01L21/28273
    • A method of fabricating a floating gate for a flash memory. An active region is formed on a semiconductor substrate. A first insulating layer, a first conductive layer and a masking layer are sequentially formed in the active region. A part of the masking layer is removed to form a first opening. A second conductive layer is formed to cover the masking layer and the bottom surface and sidewall of the first opening. A second insulating layer is formed on the second conductive layer to fill the first opening. An oxidation process is performed until the second conductive layer in contact with the second insulating layer over the masking layer is oxidized into a third insulating layer. The second and third insulating layers are removed to form a second opening. A fourth insulating layer fills in the second opening. The masking layer and the first conductive layer underlying the masking layer uncovered by the fourth insulating layer are removed.
    • 一种制造闪存的浮动栅极的方法。 在半导体衬底上形成有源区。 在有源区域中依次形成第一绝缘层,第一导电层和掩模层。 去除掩模层的一部分以形成第一开口。 形成第二导电层以覆盖掩模层和第一开口的底表面和侧壁。 在第二导电层上形成第二绝缘层以填充第一开口。 进行氧化处理,直到与掩模层上的第二绝缘层接触的第二导电层被氧化成第三绝缘层。 去除第二和第三绝缘层以形成第二开口。 第四绝缘层填充在第二开口中。 除去掩蔽层和被第四绝缘层未覆盖的掩蔽层下面的第一导电层。
    • 67. 发明授权
    • Method for fabricating control gate and floating gate of a flash memory cell
    • 用于制造闪存单元的控制栅极和浮动栅极的方法
    • US06486032B1
    • 2002-11-26
    • US10174672
    • 2002-06-18
    • Chih-Hui LinChung-Lin Huang
    • Chih-Hui LinChung-Lin Huang
    • H01L218247
    • H01L27/11521H01L21/28273H01L27/115H01L29/42324H01L29/66825
    • A method for fabricating the control gate and floating gate of a flash memory cell. An active area is firstly formed on a semiconductor substrate, followed by the formation of a first insulating layer, a first conductive layer and a first masking layer. A first opening is then formed by partially removing the first masking layer, and a floating gate oxide layer is formed by oxidation. The remaining first masking layer is removed, followed by forming a sacrificial layer, which is then partially removed to define a second opening. The remaining sacrificial layer is used as a hard mask to partially remove the first conductive layer and the first insulating layer to form a third opening. A second insulating layer is formed to fill the third opening to form an insulating plug. Part of the first conductive layer and the first insulating layer are removed to form a floating gate, followed by forming a third insulating layer and a second conductive layer. The insulating plug is then used as stop layer to remove part of the second conductive layer and third insulating layer to form a control gate.
    • 一种用于制造闪存单元的控制栅极和浮置栅极的方法。 首先在半导体衬底上形成有源区,然后形成第一绝缘层,第一导电层和第一掩模层。 然后通过部分去除第一掩模层形成第一开口,并且通过氧化形成浮栅氧化层。 除去剩余的第一掩蔽层,随后形成牺牲层,然后部分地去除牺牲层以限定第二开口。 剩余的牺牲层用作硬掩模以部分地去除第一导电层和第一绝缘层以形成第三开口。 形成第二绝缘层以填充第三开口以形成绝缘插头。 去除第一导电层和第一绝缘层的一部分以形成浮置栅极,随后形成第三绝缘层和第二导电层。 然后将绝缘插头用作停止层以去除部分第二导电层和第三绝缘层以形成控制栅极。
    • 68. 发明授权
    • Process for fabricating a floating gate of a flash memory in a self-aligned manner
    • 以自对准的方式制造闪存的浮动栅极的工艺
    • US06475894B1
    • 2002-11-05
    • US10052622
    • 2002-01-18
    • Chung-Lin HuangSheng-Tsung ChenChi-Hui Lin
    • Chung-Lin HuangSheng-Tsung ChenChi-Hui Lin
    • H01L218247
    • H01L27/11517H01L21/28273H01L27/115
    • The present invention provides a process for fabricating a floating gate of a flash memory. First, an isolation region is formed in a semiconductor substrate and the isolation region has a height higher than the substrate. A gate oxide layer and a first polysilicon layer are then formed. The first polysilicon layer is formed according to the contour of the isolation region to form a recess in the first polysilicon layer. A sacrificial insulator is filled into the recess. The first polysilicon layer is then selectively removed in a self-aligned manner using the sacrificial insulator as a hard mask to expose the isolation region. A polysilicon spacer is formed on the sidewalls of the first polysilicon layer. A first mask layer is formed on the isolation region, the sacrificial insulator in the recess is removed, and a floating gate region is defined. Then, the surfaces of the first polysilicon layer and polysilicon spacer in the floating gate region are oxidized to form a polysilicon oxide layer. Finally, the polysilicon oxide layer is used as a mask to pattern the underlying first polysilicon layer and polysilicon spacer in a self-aligned manner to form a floating gate. During the oxidation process, the polysilicon spacer of the present invention serves as a buffer layer, which is oxidized and protects the floating gate from being oxidized. Thus, the floating gate and STI overlay, and current leakage caused by insufficient overlay is prevented.
    • 本发明提供一种制造闪速存储器的浮动栅极的方法。 首先,在半导体衬底中形成隔离区,并且隔离区的高度高于衬底。 然后形成栅极氧化物层和第一多晶硅层。 第一多晶硅层根据隔离区域的轮廓形成,以在第一多晶硅层中形成凹陷。 牺牲绝缘体填充到凹部中。 然后使用牺牲绝缘体作为硬掩模以自对准方式选择性地去除第一多晶硅层以暴露隔离区域。 在第一多晶硅层的侧壁上形成多晶硅间隔物。 在隔离区域上形成第一掩模层,去除凹槽中的牺牲绝缘体,并且限定浮栅区域。 然后,浮置栅极区域中的第一多晶硅层和多晶硅间隔物的表面被氧化以形成多晶硅氧化物层。 最后,使用多晶硅氧化物层作为掩模,以自对准的方式对下面的第一多晶硅层和多晶硅间隔物进行图案化以形成浮栅。 在氧化过程中,本发明的多晶硅间隔物用作缓冲层,其被氧化并保护浮栅不被氧化。 因此,防止浮动栅极和STI覆盖,以及由覆盖不足引起的电流泄漏。
    • 70. 发明申请
    • MEMORY CAPACITOR HAVING A ROBUST MOAT AND MANUFACTURING METHOD THEREOF
    • 具有稳定运动的记忆体电容器及其制造方法
    • US20130168812A1
    • 2013-07-04
    • US13426848
    • 2012-03-22
    • TZUNG-HAN LEECHUNG-LIN HUANGRON-FU CHU
    • TZUNG-HAN LEECHUNG-LIN HUANGRON-FU CHU
    • H01L29/92H01L21/02
    • H01L28/91H01L27/10852
    • A manufacturing method for memory capacitor having a robust moat, comprising the steps of: providing a substrate; forming a patterned sacrificial layer on the substrate having a moat to separate a cell area and a peripheral area; forming a supporting layer on the sacrificial layer and filling the moat to form a annular member, wherein the supporting layer and the sacrificial layer arranged in alignment to form a stack structure; forming a plurality row of capacitor trenches on the substrate, wherein the capacitor trenches are formed at intervals in the stack structure; and forming a conducting layer on the supporting layer and covering the substrate and the inner surface of the stack structure defining the capacitor trenches.
    • 一种具有坚固的护城河的存储电容器的制造方法,包括以下步骤:提供衬底; 在具有护城河的基板上形成图案化的牺牲层以分离单元区域和周边区域; 在所述牺牲层上形成支撑层并填充所述护城河以形成环形构件,其中所述支撑层和所述牺牲层排列成对准以形成堆叠结构; 在所述基板上形成多排电容器沟槽,其中所述电容器沟槽在所述堆叠结构中间隔地形成; 以及在所述支撑层上形成导电层,并覆盖所述基板和限定所述电容器沟槽的所述堆叠结构的内表面。