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    • 32. 发明授权
    • Method for production of semiconductor device
    • 半导体器件的制造方法
    • US6121113A
    • 2000-09-19
    • US025648
    • 1998-02-18
    • Hirotaka TakatsukaHiroyuki Ohta
    • Hirotaka TakatsukaHiroyuki Ohta
    • H01L21/76H01L21/762
    • H01L21/76224
    • A method for the production of a semiconductor device comprises the steps of forming a stopper layer on a semiconducting substrate, forming a first opening part in the stopper layer thereby enabling the first opening part to establish an element separating area, etching the semiconducting substrate through the first opening part thereby forming a trench in the semiconducting substrate, partially etching the part of the stopper layer approximating closely to the trench thereby dilating the width of the first opening part, forming an oxide film on the stopper layer, in the first opening part, and inside the trench, removing the part of the oxide film rising above the stopper layer, removing the stopper layer, and contracting the lateral parts of the oxide film protruding from the trench.
    • 一种制造半导体器件的方法包括以下步骤:在半导体衬底上形成阻挡层,在阻挡层中形成第一开口部分,从而使得第一开口部分能够建立元件分离区域,通过该半导体衬底蚀刻半导电衬底 第一开口部分,从而在半导体衬底中形成沟槽,部分地蚀刻接近于沟槽的阻挡层的部分,从而扩大第一开口部分的宽度,在第一开口部分中在阻挡层上形成氧化膜, 并且在沟槽内部,去除在阻挡层上方升起的氧化膜的部分,去除止动层,并使从沟槽突出的氧化膜的侧部收缩。
    • 33. 发明授权
    • Method for forming insulating film in semiconductor device using a TEOS
or HMDS pre-treatment
    • 使用TEOS或HMDS预处理在半导体器件中形成绝缘膜的方法
    • US5525551A
    • 1996-06-11
    • US255727
    • 1994-06-07
    • Hiroyuki Ohta
    • Hiroyuki Ohta
    • H01L21/316H01L21/318H01L21/205
    • H01L21/02164H01L21/02271H01L21/02312H01L21/31608
    • The present invention relates to a method for forming a silicon oxide film on a substrate by the thermal chemical vapor deposition method (thermal CVD method) using a gas mixture of ozone (O.sub.3) and tetraethoxyorthosilicate (TEOS). It is an object of the present invention to provide a method for forming an insulating film in a semiconductor device, in which anomalous deposition of the film at a step portion (a portion of difference in level) is prevented and the film contains less moisture and less organic matter and is superior in smoothness. The present invention includes the steps of exposing the depositing surface of the substrate 14 to tetraethoxyorthosilicate in the absence of oxygen and ozone at the elevated temperature and forming an oxide film 15 on the substrate 14 by the thermal CVD method using a gas mixture of ozone (O.sub.3) and tetraethoxyorthosilicate at a deposition temperature. In a second embodiment HMDS is substituted for TEOS in the pretreatment step.
    • 本发明涉及使用臭氧(O3)和原硅酸四乙酯(TEOS)的气体混合物的热化学气相沉积法(热CVD法)在基板上形成氧化硅膜的方法。 本发明的目的是提供一种在半导体器件中形成绝缘膜的方法,其中防止了膜在步骤部分处的异常沉积(水平差异的一部分),并且膜含有较少的水分和 有机质少,平滑度优越。 本发明包括以下步骤:在升高的温度下,在不存在氧和臭氧的情况下将基材14的沉积表面暴露于原硅酸四乙酯,并且通过使用臭氧气体混合物的热CVD方法在基板14上形成氧化膜15 O3)和原硅酸四乙酯。 在第二实施方案中,HMDS在预处理步骤中代替TEOS。
    • 34. 发明授权
    • Plastic mold decapsuling apparatus
    • 塑胶模具拆封装置
    • US4822441A
    • 1989-04-18
    • US198230
    • 1988-05-25
    • Hiroyuki OhtaNaoki YoshidaHideo Goto
    • Hiroyuki OhtaNaoki YoshidaHideo Goto
    • H01L21/00B44C1/22B29C37/00C03C15/00C03C25/06
    • H01L21/67126Y10T74/20912
    • The plastic mold decapsuling apparatus comprises an etchant bottle; a heat tank; an etchant reservoir disposed in the heat tank; at least one decapsuling plastic mold holder; a first etchant feeding pump for selectively circulating the etchant from the etchant bottle to the etchant reservoir and discharging waste etchant; and a second etchant feeding pump for feeding the etchant from the reservoir to the plastic mold holder. Since the etchant bottle can be set as it is without transferring the etchant into another vessel, the etchant handling work is safe. Since a required amount of etchant can previously be heated in a reservoir within the heat tank, it is possible to continuously supply a predetermined amount of etchant heated to a constant temperature, thus improving the speed of decapsuling work. Futher, since the etchant is circulated through the decapsuling plastic mold holder, it is possible to firmly decapsule plastic mold devices by use of a relatively mild etchant such as fuming nitric acid.
    • 塑料模具拆封装置包括蚀刻剂瓶; 加热箱 设置在所述加热罐中的蚀刻剂储存器; 至少一个开封塑料模架; 用于选择性地将蚀刻剂从蚀刻剂瓶循环到蚀刻剂储存器并排出废蚀刻剂的第一蚀刻剂进料泵; 以及用于将蚀刻剂从储存器供给到塑料模具保持器的第二蚀刻剂进料泵。 由于蚀刻剂瓶可以原样设置而不将蚀刻剂转移到另一个容器中,所以蚀刻剂处理工作是安全的。 由于可以预先在加热箱内的储存器中加热所需量的蚀刻剂,所以可以连续地供给加热到恒定温度的预定量的蚀刻剂,从而提高解封装工作的速度。 更重要的是,由于蚀刻液通过解封装的塑料模具支架循环,因此可以通过使用相对温和的蚀刻剂(例如发烟硝酸)来使塑料模具装置牢固地脱模。
    • 38. 发明授权
    • Semiconductor device having buffer layer between sidewall insulating film and semiconductor substrate
    • 在侧壁绝缘膜和半导体衬底之间具有缓冲层的半导体器件
    • US07906798B2
    • 2011-03-15
    • US11950102
    • 2007-12-04
    • Hiroyuki OhtaKatsuaki Ookoshi
    • Hiroyuki OhtaKatsuaki Ookoshi
    • H01L27/092
    • H01L21/823864H01L21/823807H01L21/823814H01L27/092H01L29/1083H01L29/665H01L29/66507H01L29/6653H01L29/66628H01L29/66636H01L29/7843H01L29/7848
    • A semiconductor device includes an NMOS transistor and a PMOS transistor. The NMOS transistor includes a channel area formed in a silicon substrate, a gate electrode formed on a gate insulating film in correspondence with the channel area, and a source area and a drain area formed in the silicon substrate having the channel area situated therebetween. The PMOS transistor includes another channel area formed in the silicon substrate, another gate electrode formed on another gate insulating film in correspondence with the other channel area, and another source area and another drain area formed in the silicon substrate having the other channel area situated therebetween. The gate electrode has first sidewall insulating films. The other gate electrode has second sidewall insulating films. The distance between the second sidewall insulating films and the silicon substrate is greater than the distance between the first sidewall insulating films and the silicon substrate.
    • 半导体器件包括NMOS晶体管和PMOS晶体管。 NMOS晶体管包括形成在硅衬底中的沟道区,形成在与沟道区相对应的栅极绝缘膜上的栅电极,以及形成在硅衬底中的沟道区的源极区和漏区,位于其间。 PMOS晶体管包括形成在硅衬底中的另一沟道区,与另一沟道区相对应的另一栅极电极上形成的另一栅电极,以及形成在硅衬底中的另一源极区和另一漏极区,其另一沟道区位于其间 。 栅电极具有第一侧壁绝缘膜。 另一个栅电极具有第二侧壁绝缘膜。 第二侧壁绝缘膜和硅衬底之间的距离大于第一侧壁绝缘膜和硅衬底之间的距离。