METHOD OF FORMING INSULATION LAYER IN TRENCH ISOLATION TYPE SEMICONDUCTOR DEVICE
摘要
PURPOSE: A method of forming an insulation layer in trench isolation type semiconductor device is provided to fill isolation layer into a trench having a high aspect ratio without defects by using an SOG(Spin On glass) layer. CONSTITUTION: A trench etch mask pattern(13) is formed on a substrate(10) including a pad oxide layer(11). A trench for isolation is formed on the substrate(10) by etching the substrate(10). A thermal oxide layer(15) is formed on an inner wall of the trench. A silicon nitride liner(17) is laminated on the thermal oxide layer(15). An SOG layer is formed on the substrate(10). A curing process for the SOG layer is performed. An etch process for the cured SOG layer(211) is performed. A silicon oxide layer(31) is deposited on the substrate(10) by a CVD(Chemical Vapor Deposition) method. A trench isolation layer is formed by removing the silicon nitride layer and the pad oxide layer(11).
申请公布号
KR20020071169(A)
申请公布日期
2002.09.12
申请号
KR20010011142
申请日期
2001.03.05
申请人
SAMSUNG ELECTRONICS CO., LTD.
发明人
HONG, EUN GI;HONG, SU JIN;HUH, JIN HWA;KIM, HONG GEUN;KOO, JU SEON;PARK, MUN HAN