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    • 24. 发明授权
    • Method and system for providing a contact hole in a semiconductor device
    • 用于在半导体器件中提供接触孔的方法和系统
    • US06764929B1
    • 2004-07-20
    • US10151625
    • 2002-05-16
    • Angela HuiChi ChangMark Chang
    • Angela HuiChi ChangMark Chang
    • H01L21425
    • H01L21/76897H01L21/265
    • A method and system for providing a contact hole between structures for a semiconductor device is disclosed. The method and system comprises etching a resist material on the semiconductor device to expose a surface of the structures; providing an implant to the surface of the structures; and removing the resist material from a gap between the structures. The method and system includes annealing the semiconductor device to cause the implant to adhere to the treated surface; and providing dielectric material within the gap. Finally, the method and system includes etching the contact hole in the gap between the structures. The contact hole can then be etched without damaging the structures. Accordingly, by providing an implant treated surface and then providing an anneal process the implant is bonded to the appropriate portion of the semiconductor structure. Due to the etch difference between the implant treated device and the non-treated surface, it is possible to etch down to the bottom of the semiconductor device without damaging the gate. Since the surface around the gate structure is treated, the etch stop layer etch at a much slower rate. Therefore, there is a much larger process margin for misalignment allowance and the contact size can be larger because the dielectric material and the surface treatment protects the gate area.
    • 公开了一种用于在半导体器件的结构之间提供接触孔的方法和系统。 该方法和系统包括在半导体器件上蚀刻抗蚀剂材料以暴露结构的表面; 向所述结构的表面提供植入物; 以及从结构之间的间隙去除抗蚀剂材料。 该方法和系统包括退火半导体器件以使植入物粘附到被处理的表面上; 并在间隙内提供电介质材料。 最后,该方法和系统包括蚀刻结构之间的间隙中的接触孔。 然后可以蚀刻接触孔而不损坏结构。 因此,通过提供植入物处理的表面,然后提供退火工艺,将植入物结合到半导体结构的适当部分。 由于植入物处理的设备和未处理的表面之间的蚀刻差异,可以在不损坏栅极的情况下向下蚀刻到半导体器件的底部。 由于栅极结构周围的表面被处理,蚀刻停止层以较慢的速率蚀刻。 因此,由于介电材料和表面处理保护了栅极区域,所以对于不对准余量有更大的处理余量,并且接触尺寸可以更大。
    • 27. 发明授权
    • Shallow trench isolation filled with thermal oxide
    • 浅沟隔离填充热氧化物
    • US06232646B1
    • 2001-05-15
    • US09082607
    • 1998-05-20
    • Yu SunAngela T. HuiYue-Song HeTatsuya KajitaMark ChangChi ChangHung-Sheng Chen
    • Yu SunAngela T. HuiYue-Song HeTatsuya KajitaMark ChangChi ChangHung-Sheng Chen
    • H01L2900
    • H01L21/7621H01L21/76232
    • A semiconductor apparatus and method for producing shallow trench isolation. The method includes the steps providing a semiconductor substrate member fabricated having a thin barrier oxide layer on which are fabricated a plurality of spaced apart silicon nitride pads. The regions between the spaced apart nitride pads delineate U-shaped regions for forming shallow isolation trenches and are layered with silicon oxide and polysilicon. The U-shaped regions provide a buffer region of oxide and polysilicon material adjacent opposing silicon nitride pads that prevent erosion of the nitride during etch formation of the isolation trench. The polysilicon is further etched to form a wider, second U-shaped region having sloped sidewalls that provide opposing spacer-forming buffer material that facilitates forming a V-shaped isolation trench region into the semiconductor substrate member a predetermined depth without eroding the silicon nitride pads. The V-shaped trench is subsequently filled with silicon dioxide that is grown by a hot thermal oxide process. The upper portion of the V-shaped isolation trench may be further filled with deposited silicon dioxide followed by a chemical mechanical polishing process.
    • 一种用于产生浅沟槽隔离的半导体装置和方法。 该方法包括提供制造具有薄的阻挡氧化物层的半导体衬底构件的步骤,在其上制造多个间隔开的氮化硅衬垫。 间隔开的氮化物衬垫之间的区域划定用于形成浅隔离沟槽的U形区域并且与氧化硅和多晶硅层叠。 U形区域提供邻近相对的氮化硅焊盘的氧化物和多晶硅材料的缓冲区,其在隔离沟槽的蚀刻形成期间防止氮化物的侵蚀。 多晶硅被进一步蚀刻以形成更宽的第二U形区域,其具有倾斜的侧壁,其提供相对的间隔物形成缓冲材料,其有利于在不侵蚀氮化硅焊盘的情况下在半导体衬底构件中形成预定深度的V形隔离沟槽区域 。 随后,V形沟槽填充二氧化硅,二氧化硅通过热的热氧化工艺生长。 V形隔离沟槽的上部可以进一步填充沉积的二氧化硅,随后进行化学机械抛光工艺。