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    • 8. 发明授权
    • Semiconductor device manufacturing method and semiconductor device
    • 半导体器件制造方法和半导体器件
    • US07803706B2
    • 2010-09-28
    • US12408593
    • 2009-03-20
    • Toshiaki IdakaKazuyuki Yahiro
    • Toshiaki IdakaKazuyuki Yahiro
    • H01L21/4763H01L21/31H01L21/469
    • H01L21/3105H01L29/7843
    • Disclosed is a semiconductor device manufacturing method in which a silicon nitride film is formed to cover an n-channel transistor formed on a semiconductor substrate and to apply a tensile stress in a channel length direction to a channel of the n-channel transistor, the method includes: forming a first-layer silicon nitride film above the n-channel transistor; irradiating the first-layer silicon nitride film with ultraviolet radiation; and after the ultraviolet irradiation, forming at least one silicon nitride film thinner than the first-layer silicon nitride film above the first-layer silicon nitride film. Silicon nitride films formed to apply the tensile stress is formed by respective steps.
    • 公开了一种半导体器件制造方法,其中形成氮化硅膜以覆盖形成在半导体衬底上的n沟道晶体管并且在沟道长度方向上施加拉应力到n沟道晶体管的沟道,该方法 包括:在n沟道晶体管上形成第一层氮化硅膜; 用紫外线照射第一层氮化硅膜; 并且在紫外线照射之后,形成比第一层氮化硅膜上方的第一层氮化硅膜薄的至少一个氮化硅膜。 通过各个步骤形成施加拉伸应力的氮化硅膜。
    • 9. 发明授权
    • Method of depositing a reflow SiO.sub.2 film
    • 沉积SiO 2膜的方法
    • US5683940A
    • 1997-11-04
    • US575851
    • 1995-12-20
    • Kazuyuki Yahiro
    • Kazuyuki Yahiro
    • C30B25/16C23C16/40H01L21/316H01L21/768H01L23/522H01L27/00
    • H01L21/02164H01L21/022H01L21/02211H01L21/02271H01L21/02274H01L21/31608H01L21/31612H01L21/76801H01L21/76828H01L21/76829Y10S438/902
    • In a method of manufacturing a semiconductor device, a first plasma insulating film having a thickness of 0.1 .mu.m or more is formed on the semiconductor substrate with lower-surface wirings thereon. The semiconductor substrate is moved into a pressure-reduced CVD device, and then an SiH.sub.4 gas and H.sub.2 O.sub.2 are supplied into the pressure-reduced CVD device to react them to each other in a vacuum of 650 Pa or less within the temperature range of -10.degree. C. to +10.degree. C. to form a reflow SiO.sub.2 film having a thickness of 0.4 .mu.m to 1.4 .mu.m on the semiconductor substrate. The semiconductor substrate is put in a vacuum of 6.5 pascal for 30 seconds or more. Thereafter, the semiconductor substrate is put at a high temperature of 300.degree. C. to 450.degree. C. for 120 to 600 seconds. A second plasma insulating film having a thickness of 0.3 .mu.m or more and serving as a cap film is formed on the semiconductor substrate. The crack resistance of the reflow insulating film formed in the above steps is improved, and the flatness of the reflow insulating film is improved.
    • 在制造半导体器件的方法中,在其上具有较低表面布线的半导体衬底上形成厚度为0.1μm或更大的第一等离子体绝缘膜。 将半导体衬底移动到减压CVD器件中,然后将SiH 4气体和H 2 O 2供给到减压CVD器件中,以在-10Pa以下的温度范围内在650Pa以下的真空中彼此反应 ℃至+10℃,以在半导体衬底上形成厚度为0.4μm至1.4μm的回流SiO 2膜。 将半导体衬底置于6.5帕斯卡的真空中30秒以上。 此后,将半导体衬底置于300℃至450℃的高温下120至600秒。 在半导体衬底上形成厚度为0.3μm以上且用作盖膜的第二等离子体绝缘膜。 在上述步骤中形成的回流绝缘膜的抗裂性得到改善,并且提高了回流绝缘膜的平坦度。