Methods of forming capacitors

Invention Grant

US07713813B2 Methods of forming capacitors 有权

Title translation: 形成电容器的方法

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Patent Title: Methods of forming capacitors
Patent Title (中): 形成电容器的方法
Application No.: US11218229

Application Date: 2005-08-31
Publication No.: US07713813B2

Publication Date: 2010-05-11
Inventor: Prashant Raghu
Applicant: Prashant Raghu
Applicant Address: US ID Boise
Assignee: Micron Technology, Inc.
Current Assignee: Micron Technology, Inc.
Current Assignee Address: US ID Boise
Agency: Wells St. John P.S.
Main IPC: H01L21/8242
IPC: H01L21/8242

Abstract:

The invention includes methods in which silicon is removed from titanium-containing container structures with an etching composition having a phosphorus-and-oxygen-containing compound therein. The etching composition can, for example, include one or both of ammonium hydroxide and tetra-methyl ammonium hydroxide. The invention also includes methods in which titanium-containing whiskers are removed from between titanium-containing capacitor electrodes. Such removal can be, for example, accomplished with an etch utilizing one or more of hydrofluoric acid, ammonium fluoride, nitric acid and hydrogen peroxide.

Abstract(Chinese):

本发明包括使用其中含有含磷和氧的化合物的蚀刻组合物从含钛容器结构中除去硅的方法。蚀刻组合物可以例如包括氢氧化铵和四甲基氢氧化铵中的一种或两种。本发明还包括从含钛电容器电极之间除去含钛晶须的方法。这种去除可以例如通过使用氢氟酸，氟化铵，硝酸和过氧化氢中的一种或多种的蚀刻来实现。

Public/Granted literature

US20070048976A1 Methods of forming semiconductor constructions and capacitors Public/Granted day:2007-03-01

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
H01L21/70	.由在一共用基片内或其上形成的多个固态组件或集成电路组成的器件或其部件的制造或处理；集成电路器件或其特殊部件的制造（由预制电组件组成的组装件的制造入H05K3/00，H05K13/00）
H01L21/77	..在公共衬底中或上面形成的由许多固态元件或集成电路组成的器件的制造或处理（电可编程只读存储器或其多步骤的制造方法入H01L27/115）
H01L21/78	...把衬底连续地分成多个独立的器件（改变表面物理特性或者半导体形状的切割入H01L21/304）
H01L21/82	....制造器件，例如每一个由许多元件组成的集成电路
H01L21/822	.....衬底是采用硅工艺的半导体的（H01L21/8258优先）
H01L21/8232	......场效应工艺
H01L21/8234	.......MIS工艺
H01L21/8239	........存储器结构
H01L21/8242	.........动态随机存取存储结构（DRAM）