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    • 1. 发明授权
    • Method of forming rounded corner in trench
    • 在沟槽中形成圆角的方法
    • US06991994B2
    • 2006-01-31
    • US10771688
    • 2004-02-03
    • Pei-Feng SunYi Fu ChungJen Chieh Chang
    • Pei-Feng SunYi Fu ChungJen Chieh Chang
    • H01L21/76
    • H01L21/76235
    • A method for forming a trench having rounded corners in a semiconductor device comprises providing a substrate; forming a first pad oxide layer, a first silicon nitride layer, and a first oxide layer on the substrate sequentially; removing portions of the first oxide layer, the first silicon nitride layer, the first pad oxide layer, and the substrate to form at least one trench; and removing portions of the first oxide layer, the first silicon nitride layer, and the first pad oxide layer in the trench above an upper corner of the substrate in the trench. The substrate includes a lower corner at a bottom of the trench. The method further comprises forming a second pad oxide layer in the trench; forming a second silicon nitride layer on the second pad oxide layer and the first oxide layer; removing portions of the second silicon nitride layer to expose the second pad oxide layer on the corners and the bottom of the trench; forming a thermal oxide layer on the second pad oxide layer exposed by removing the portions of the second nitride layer; and removing the second silicon nitride layer, the thermal oxide layer, and the second pad oxide layer.
    • 在半导体器件中形成具有圆角的沟槽的方法包括提供衬底; 在基板上依次形成第一衬垫氧化物层,第一氮化硅层和第一氧化物层; 去除第一氧化物层,第一氮化硅层,第一衬垫氧化物层和衬底的部分,以形成至少一个沟槽; 以及在沟槽中的衬底的上角上方的沟槽中去除第一氧化物层,第一氮化硅层和第一衬垫氧化物层的部分。 衬底包括沟槽底部的下角。 该方法还包括在沟槽中形成第二衬垫氧化物层; 在所述第二焊盘氧化物层和所述第一氧化物层上形成第二氮化硅层; 去除第二氮化硅层的部分以暴露沟槽的角部和底部上的第二焊盘氧化物层; 通过去除所述第二氮化物层的所述部分而在所述第二焊盘氧化物层上形成热氧化层; 以及去除所述第二氮化硅层,所述热氧化物层和所述第二衬垫氧化物层。
    • 2. 发明授权
    • Method of manufacturing Schottky diode device
    • 制造肖特基二极管器件的方法
    • US07282429B2
    • 2007-10-16
    • US11208374
    • 2005-08-19
    • Shih-Chi LaiPei-Feng SunYi Fu ChungJen Chieh Chang
    • Shih-Chi LaiPei-Feng SunYi Fu ChungJen Chieh Chang
    • H01L21/28
    • H01L29/66143H01L21/32105H01L21/32139H01L27/0814
    • Embodiments of the invention provide a method of manufacturing a Schottky diode device. In one embodiment, the method includes: (a) providing a substrate; (b) sequentially forming a gate oxide layer and a polysilicon layer on the substrate; (c) partially oxidizing the polysilicon layer to form a poly oxide layer on the polysilicon layer; (d) forming and defining a photoresist layer on the poly oxide layer for exposing parts of the poly oxide layer; (e) etching the poly oxide layer, the polysilicon layer and the gate oxide layer via the photoresist layer for forming a poly oxide structure, a polysilicon structure and a gate oxide structure; and (f) removing the photoresist layer. The present invention introduces a poly oxide layer instead of the CVD oxide for preventing the photoresist lifting issue.
    • 本发明的实施例提供一种制造肖特基二极管器件的方法。 在一个实施例中,该方法包括:(a)提供衬底; (b)在基板上依次形成栅氧化层和多晶硅层; (c)在所述多晶硅层上部分氧化所述多晶硅层以形成多晶氧化物层; (d)在所述多晶氧化物层上形成和限定光致抗蚀剂层,以暴露所述多晶氧化物层的部分; (e)经由用于形成多晶氧化物结构的光致抗蚀剂层,多晶硅结构和栅极氧化物结构蚀刻多晶氧化物层,多晶硅层和栅极氧化物层; 和(f)去除光致抗蚀剂层。 本发明引入了用于防止光致抗蚀剂提升问题的多氧化物层代替CVD氧化物。
    • 6. 发明申请
    • Method of manufacturing schottky diode device
    • 制造肖特基二极管器件的方法
    • US20060046368A1
    • 2006-03-02
    • US11208374
    • 2005-08-19
    • Shih-Chi LaiPei-Feng SunYi ChungJen Chang
    • Shih-Chi LaiPei-Feng SunYi ChungJen Chang
    • H01L21/8238H01L21/302H01L21/31
    • H01L29/66143H01L21/32105H01L21/32139H01L27/0814
    • Embodiments of the invention provide a method of manufacturing a Schottky diode device. In one embodiment, the method includes: (a) providing a substrate; (b) sequentially forming a gate oxide layer and a polysilicon layer on the substrate; (c) partially oxidizing the polysilicon layer to form a poly oxide layer on the polysilicon layer; (d) forming and defining a photoresist layer on the poly oxide layer for exposing parts of the poly oxide layer; (e) etching the poly oxide layer, the polysilicon layer and the gate oxide layer via the photoresist layer for forming a poly oxide structure, a polysilicon structure and a gate oxide structure; and (f) removing the photoresist layer. The present invention introduces a poly oxide layer instead of the CVD oxide for preventing the photoresist lifting issue.
    • 本发明的实施例提供一种制造肖特基二极管器件的方法。 在一个实施例中,该方法包括:(a)提供衬底; (b)在基板上依次形成栅氧化层和多晶硅层; (c)在所述多晶硅层上部分氧化所述多晶硅层以形成多晶氧化物层; (d)在所述多晶氧化物层上形成和限定光致抗蚀剂层,以暴露所述多晶氧化物层的部分; (e)经由用于形成多晶氧化物结构的光致抗蚀剂层,多晶硅结构和栅极氧化物结构蚀刻多晶氧化物层,多晶硅层和栅极氧化物层; 和(f)去除光致抗蚀剂层。 本发明引入了用于防止光致抗蚀剂提升问题的多氧化物层代替CVD氧化物。
    • 8. 发明授权
    • Trench filling process for preventing formation of voids in trench
    • 用于防止在沟槽中形成空隙的沟槽填充过程
    • US06828196B2
    • 2004-12-07
    • US10652635
    • 2003-08-28
    • Pei-Feng SunShih-Chi LaiMao-Song TsengYi-Fu Chung
    • Pei-Feng SunShih-Chi LaiMao-Song TsengYi-Fu Chung
    • H01L21336
    • H01L21/76224
    • Embodiments of the present invention relate to a process for filling a trench structure of a semiconductor device to prevent formation of voids in the trench structure so as to minimize current leakage and provide excellent electrical properties. In one embodiment, a process for filling a trench of a semiconductor device comprises providing a semiconductor substrate; forming a silicon nitride layer on the semiconductor substrate; forming an oxide layer on the silicon nitride layer; partially removing the oxide layer, the silicon nitride layer and the semiconductor substrate to form at least one trench; forming a sacrificial oxide layer on sidewalls of the trench; removing the sacrificial oxide layer; performing an etching procedure to remove portions of the silicon nitride layer protruding from the sidewalls of the trench so as to form substantially even sidewalls of the trench; and forming a trench-fill layer to fill the trench and deposit on the oxide layer.
    • 本发明的实施例涉及一种用于填充半导体器件的沟槽结构以防止在沟槽结构中形成空隙的方法,以便使电流泄漏最小化并提供优异的电性能。 在一个实施例中,用于填充半导体器件的沟槽的工艺包括提供半导体衬底; 在所述半导体衬底上形成氮化硅层; 在所述氮化硅层上形成氧化物层; 部分去除氧化物层,氮化硅层和半导体衬底以形成至少一个沟槽; 在所述沟槽的侧壁上形成牺牲氧化物层; 去除牺牲氧化物层; 执行蚀刻步骤以去除从沟槽的侧壁突出的部分氮化硅层,以形成沟槽的基本均匀的侧壁; 以及形成沟槽填充层以填充沟槽并沉积在氧化物层上。