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    • 1. 发明授权
    • Method for fabricating a semiconductor device
    • 半导体器件的制造方法
    • US6013544A
    • 2000-01-11
    • US610227
    • 1996-03-04
    • Naoki MakitaTadayoshi MiyamotoTsukasa Shibuya
    • Naoki MakitaTadayoshi MiyamotoTsukasa Shibuya
    • H01L21/205H01L21/20H01L21/268H01L21/336H01L21/84H01L29/78H01L29/786
    • H01L21/02532H01L21/02422H01L21/02672H01L21/02675H01L27/1277
    • A method for fabricating a semiconductor device including an active region obtained by utilizing a silicon semiconductor film having crystallinity which is formed on an insulating substrate is disclosed. A crystalline silicon semiconductor film is obtained by introducing catalyst elements for promoting the crystallization into a lower amorphous silicon semiconductor film and then performing a heat treatment onto the lower amorphous silicon semiconductor film. Thereafter, an upper amorphous silicon semiconductor film is formed on the obtained lower crystalline silicon semiconductor film, which is subsequently subjected to a heat treatment so as to obtain an upper crystalline silicon semiconductor film. Then, the upper crystalline silicon semiconductor film is removed. By this process, the catalyst elements remaining in the lower crystalline silicon semiconductor film moves into the upper crystalline silicon semiconductor film. As a result, a concentration of the catalyst elements in the lower crystalline silicon semiconductor film is reduced.
    • 公开了一种制造半导体器件的方法,该半导体器件包括通过利用形成在绝缘衬底上的具有结晶性的硅半导体膜而获得的有源区。 通过将用于促进结晶的催化剂元素引入到下部非晶硅半导体膜中,然后对下部非晶硅半导体膜进行热处理,获得结晶硅半导体膜。 此后,在所获得的下部结晶硅半导体膜上形成上部非晶硅半导体膜,随后对其进行热处理,以获得上部结晶硅半导体膜。 然后,除去上部晶体硅半导体膜。 通过该工艺,残留在下结晶硅半导体膜中的催化剂元素移动到上结晶硅半导体膜中。 结果,下层结晶硅半导体膜中的催化剂元素的浓度降低。
    • 4. 发明授权
    • Method for fabricating thin film transistors
    • 制造薄膜晶体管的方法
    • US6162667A
    • 2000-12-19
    • US408869
    • 1995-03-23
    • Takashi FunaiNaoki MakitaYoshitaka YamamotoTadayoshi MiyamotoTakamasa KousaiMasashi Maekawa
    • Takashi FunaiNaoki MakitaYoshitaka YamamotoTadayoshi MiyamotoTakamasa KousaiMasashi Maekawa
    • H01L21/336H01L21/77H01L21/84H01L27/12H01L21/00
    • H01L27/12H01L27/1277H01L29/66757
    • In a fabrication of a semiconductor device, an amorphous semiconductor film is first formed on a substrate having an insulating surface. Then, a minute amount of catalyst elements for accelerating crystallization of the amorphous semiconductor film is supplied to at least a portion of a surface of the amorphous semiconductor film. A heat treatment is further conducted so that the supplied catalyst elements are diffused into the amorphous semiconductor film. Thus, the catalyst elements are introduced uniformly into the amorphous semiconductor film in a very minute amount or at a low concentration, resulting in polycrystallization of at least a portion of the amorphous semiconductor film. Utilizing the thus obtained crystalline semiconductor film on the substrate surface as an active region, a semiconductor device such as a TFT is fabricated. The introduction of the catalyst elements are conducted by various methods such as: a formation of a film containing a minute amount of the catalyst elements; application of a solution containing the catalyst elements in several spin coating cycles; diffusion of the catalyst elements through a buffer layer; dipping into a solution in which the catalyst elements are dissolved or dispersed; or formation of a plating layer containing the catalyst elements.
    • 在半导体器件的制造中,首先在具有绝缘表面的衬底上形成非晶半导体膜。 然后,将少量用于加速非晶半导体膜的结晶的催化剂元素供给到非晶半导体膜的表面的至少一部分。 进一步进行热处理,使得所提供的催化剂元素扩散到非晶半导体膜中。 因此,催化剂元素以非常微量或低浓度均匀地引入到非晶半导体膜中,导致至少一部分非晶半导体膜的多晶化。 利用由此获得的晶体半导体膜作为有源区,在衬底表面上制造诸如TFT的半导体器件。 催化剂元素的引入通过各种方法进行,例如:形成含有微量催化剂元素的膜; 在几个旋涂周期中应用含有催化剂元素的溶液; 催化剂元件通过缓冲层的扩散; 浸入催化剂元素溶解或分散的溶液中; 或形成含有催化剂元素的镀层。
    • 10. 发明申请
    • SEMICONDUCTOR DEVICE PROVIDED WITH THIN FILM TRANSISTOR AND METHOD FOR MANUFACTURING THE SEMICONDUCTOR DEVICE
    • 具有薄膜晶体管的半导体器件和制造半导体器件的方法
    • US20100181575A1
    • 2010-07-22
    • US12667465
    • 2008-06-05
    • Naoki MakitaMasato Hashimoto
    • Naoki MakitaMasato Hashimoto
    • H01L33/00H01L29/786H01L21/336
    • H01L27/127H01L27/1214H01L27/1274H01L29/66757H01L29/66765H01L29/78618
    • A semiconductor device includes at least one thin-film transistor 116, which includes: a crystalline semiconductor layer 120 including a region 110 to be a channel region and source and drain regions 113; a gate electrode 107 for controlling the conductivity of the region 110 to be a channel region; a gate insulating film 106 arranged between the semiconductor layer 120 and the gate electrode 107; and source and drain electrodes 115 connected to the source and drain regions 113, respectively. At least one of the source and drain regions 113 contains an element to be a donor or an acceptor and a rare-gas element, but the region 110 to be a channel region does not contain the rare-gas element. The atomic weight of the rare-gas element is greater than that of the element to be a donor or an acceptor. The concentration of the rare-gas element in the at least one region as measured in the thickness direction thereof decreases continuously from the upper surface of the at least one region toward its lower surface.
    • 半导体器件包括至少一个薄膜晶体管116,其包括:晶体半导体层120,其包括作为沟道区的区域110以及源极和漏极区113; 用于将区域110的导电性控制为沟道区的栅电极107; 布置在半导体层120和栅电极107之间的栅极绝缘膜106; 以及分别连接到源区113和漏区113的源电极115和漏电极115。 源极区域113和漏极区域113中的至少一个包含作为供体或受体的元素和稀有气体元素,但是作为沟道区域的区域110不含有稀有气体元素。 稀有气体元素的原子量大于作为供体或受体的元素的原子量。 在其厚度方向上测量的至少一个区域中的稀有气体元素的浓度从至少一个区域的上表面向其下表面连续地减小。