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    • 3. 发明授权
    • Method of manufacturing GaAs metal semiconductor field effect transistor
    • 制造GaAs金属半导体场效应晶体管的方法
    • US5314833A
    • 1994-05-24
    • US996052
    • 1992-12-23
    • Kyung-Ho LeeKyoung-Ik ChoYong-Tak Lee
    • Kyung-Ho LeeKyoung-Ik ChoYong-Tak Lee
    • H01L29/812H01L21/22H01L21/225H01L21/265H01L21/338
    • H01L29/66871H01L21/2258H01L21/2654H01L21/26553H01L21/2656
    • A method of manufacturing a GaAs field effect transistor comprises depositing a silicon thin film 202 on a semi-insulating semiconductor substrate 201, forming a first sensitive film 203 by a photolithography to define channel areas and ion-implanting n-type dopants into the substrate to form an activation layer, removing the first sensitive film, forming a second sensitive film 203a on the silicon thin film by photolithography to define an ohmic contact area and then forming a highly doped impurity layer on the side of the activation layer by way of an ion-implantation process, depositing a passivation film 206 over the entire surface of the substrate 201 after the removal of the sensitive film, and effecting an annealing or heat treatment, forming a third sensitive film of a predetermined pattern by using an ohmic contact forming mask, effecting a recess etching process to the surface of the substrate and forming an ohmic contact on the etched portion, and patterning a gate region by using the gate forming mask, recess-etching the surface of the substrate and depositing a low resistivity metal to form a gate.
    • 制造GaAs场效应晶体管的方法包括在半绝缘半导体衬底201上沉积硅薄膜202,通过光刻法形成第一敏感膜203,以将沟道区域和离子注入n型掺杂剂定义到衬底中 形成激活层,去除第一敏感膜,通过光刻在硅薄膜上形成第二敏感膜203a以限定欧姆接触面积,然后通过离子在激活层侧上形成高度掺杂的杂质层 在移除敏感膜之后,在衬底201的整个表面上沉积钝化膜206,进行退火或热处理,通过使用欧姆接触形成掩模形成预定图案的第三感光膜, 对衬底的表面进行凹陷蚀刻工艺,并在蚀刻部分上形成欧姆接触,并且通过栅极区域图案化 使用栅极形成掩模,凹陷蚀刻衬底的表面并沉积低电阻率金属以形成栅极。
    • 5. 发明授权
    • Ferroelectric memory device and method of fabricating the same
    • 铁电存储器件及其制造方法
    • US06649955B2
    • 2003-11-18
    • US10199455
    • 2002-07-19
    • Yong-Tak Lee
    • Yong-Tak Lee
    • H01L31119
    • H01L27/11502H01L21/76802H01L21/76895H01L27/11507H01L28/55
    • A ferroelectric memory device and a method of fabricating the same are disclosed. Four interlayer dielectric layers are stacked on cell array and peripheral circuit regions on a semiconductor substrate. A gate contact pad and a source/drain contact pad are connected to a gate electrode and a source/drain of the peripheral circuit transistor through the first interlayer dielectric layer. A gate contact plug and a source/drain contact plug are respectively connected to the gate contact pad and the source/drain contact pad through the second interlayer dielectric layer. First via holes expose the gate contact plug and the source contact plug through the third interlayer dielectric layer. A first interconnection extends between the third and fourth interlayer dielectric layers, covering the sidewalls of the first via holes and connected to at least one of the gate contact plug and the source/drain contact plug.
    • 公开了铁电存储器件及其制造方法。 在半导体衬底上的单元阵列和外围电路区域上层叠四层电介质层。 栅极接触焊盘和源极/漏极接触焊盘通过第一层间介质层连接到外围电路晶体管的栅极电极和源极/漏极。 栅极接触插塞和源极/漏极接触插塞分别通过第二层间介质层连接到栅极接触焊盘和源极/漏极接触焊盘。 第一通孔通过第三层间介电层露出栅极接触插塞和源极接触插塞。 第一互连在第三和第四层间电介质层之间延伸,覆盖第一通孔的侧壁并连接到栅极接触插塞和源极/漏极接触插塞中的至少一个。
    • 10. 发明授权
    • Method of fabricating a ferromagnetic memory device
    • 制造铁磁存储器件的方法
    • US07015094B2
    • 2006-03-21
    • US10654717
    • 2003-09-03
    • Yong-Tak Lee
    • Yong-Tak Lee
    • H01L21/8242
    • H01L27/11502H01L21/76802H01L21/76895H01L27/11507H01L28/55
    • A ferroelectric memory device and a method of fabricating the same are disclosed. Four interlayer dielectric layers are stacked on cell array and peripheral circuit regions on a semiconductor substrate. A gate contact pad and a source/drain contact pad are connected to a gate electrode and a source/drain of the peripheral circuit transistor through the first interlayer dielectric layer. A gate contact plug and a source/drain contact plug are respectively connected to the gate contact pad and the source/drain contact pad through the second interlayer dielectric layer. First via holes expose the gate contact plug and the source contact plug through the third interlayer dielectric layer. A first interconnection extends between the third and fourth interlayer dielectric layers, covering the sidewalls of the first via holes and connected to at least one of the gate contact plug and the source/drain contact plug.
    • 公开了铁电存储器件及其制造方法。 在半导体衬底上的单元阵列和外围电路区域上层叠四层电介质层。 栅极接触焊盘和源极/漏极接触焊盘通过第一层间介质层连接到外围电路晶体管的栅极电极和源极/漏极。 栅极接触插塞和源极/漏极接触插塞分别通过第二层间介质层连接到栅极接触焊盘和源极/漏极接触焊盘。 第一通孔通过第三层间介电层露出栅极接触插塞和源极接触插塞。 第一互连在第三和第四层间电介质层之间延伸,覆盖第一通孔的侧壁并连接到栅极接触插塞和源极/漏极接触插塞中的至少一个。