中科微点-全球专利检索

  1. Login
  2. Sign Up
Invention Grant
US07867924B2 Methods of reducing impurity concentration in isolating films in semiconductor devices 有权
降低半导体器件隔离膜杂质浓度的方法

Methods of reducing impurity concentration in isolating films in semiconductor devices
Abstract:
A method of fabricating a semiconductor device includes forming a lower device on a lower semiconductor substrate, and forming an interlayer insulating film on the lower device. An upper semiconductor substrate is formed on the interlayer insulating film such that the interlayer insulating film is between the lower and upper semiconductor substrates. Upper trenches are formed within the upper semiconductor substrate. An upper device isolating film is formed within the upper trenches. The upper device isolating film is irradiated with ultraviolet light having a wavelength configured to break chemical bonds of impurities in the upper device isolating film to reduce an impurity concentration thereof.
Abstract(Chinese):

制造半导体器件的方法包括在下半导体衬底上形成下部器件，并在下部器件上形成层间绝缘膜。 在层间绝缘膜上形成上半导体衬底，使得层间绝缘膜位于下半导体衬底和上半导体衬底之间。 上沟槽形成在上半导体衬底内。 上部器件隔离膜形成在上部沟槽内。 用上述器件隔离膜中的杂质化学键的波长的紫外线照射上部器件隔离膜以降低其杂质浓度。

Public/Granted literature
Information query
Espacenet
IPC分类:
H 电学
H01 基本电气元件
H01L 半导体器件；其他类目中不包括的电固体器件（使用半导体器件的测量入G01；一般电阻器入H01C；磁体、电感器、变压器入H01F；一般电容器入H01G；电解型器件入H01G9/00；电池组、蓄电池入H01M；波导管、谐振器或波导型线路入H01P；线路连接器、汇流器入H01R；受激发射器件入H01S；机电谐振器入H03H；扬声器、送话器、留声机拾音器或类似的声机电传感器入H04R；一般电光源入H05B；印刷电路、混合电路、电设备的外壳或结构零部件、电气元件的组件的制造入H05K；在具有特殊应用的电路中使用的半导体器件见应用相关的小类）
H01L21/00 专门适用于制造或处理半导体或固体器件或其部件的方法或设备
H01L21/02 .半导体器件或其部件的制造或处理
H01L21/04 ..至少具有一个跃变势垒或表面势垒的器件，例如PN结、耗尽层、载体集结层
H01L21/34 ...具有H01L21/06，H01L21/16及H01L21/18各组不包含的或有或无杂质，例如掺杂材料的半导体的器件
H01L21/46 ....用H01L21/36至H01L21/428各组不包含的方法或设备处理半导体材料的（在半导体材料上制作电极的入H01L21/44）
H01L21/461 .....改变半导体材料的表面物理特性或形状的，例如腐蚀、抛光、切割
H01L21/4763 ......非绝缘层的沉积，例如绝缘层上的导电层、电阻层；这些层的后处理（电极的制造入H01L21/28）
Patent Agency Ranking
0/0