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    • 1. 发明授权
    • Method of forming transistor devices with different threshold voltages using halo implant shadowing
    • 使用光晕植入物阴影形成具有不同阈值电压的晶体管器件的方法
    • US07598161B2
    • 2009-10-06
    • US11861534
    • 2007-09-26
    • Jingrong ZhouMark MichaelDonna Michael, legal representativeDavid WuJames F. BullerAkif Sultan
    • Jingrong ZhouMark MichaelDavid WuJames F. BullerAkif Sultan
    • H01L21/425
    • H01L21/26513H01L21/26586H01L21/823807H01L29/1083
    • The halo implant technique described herein employs a halo implant mask that creates a halo implant shadowing effect during halo dopant bombardment. A first transistor device structure and a second transistor device structure are formed on a wafer such that they are orthogonally oriented to each other. A common halo implant mask is created with features that prevent halo implantation of the diffusion region of the second transistor device structure during halo implantation of the diffusion region of the first transistor device structure, and with features that prevent halo implantation of the diffusion region of the first transistor device structure during halo implantation of the diffusion region of the second transistor device structure. The orthogonal orientation of the transistor device structures and the pattern of the halo implant mask obviates the need to create multiple implant masks to achieve different threshold voltages for the transistor device structures.
    • 本文描述的光晕植入技术采用在光晕掺杂剂轰击期间产生晕轮植入物阴影效应的光晕注入掩模。 第一晶体管器件结构和第二晶体管器件结构形成在晶片上,使得它们彼此正交地取向。 创建了常见的光晕注入掩模,其特征在于,在第一晶体管器件结构的扩散区域的晕圈注入期间防止第二晶体管器件结构的扩散区域的光晕注入,并且具有防止第 在第二晶体管器件结构的扩散区的晕圈注入期间的第一晶体管器件结构。 晶体管器件结构的正交取向和光晕注入掩模的图案消除了创建多个注入掩模以实现晶体管器件结构的不同阈值电压的需要。