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    • 6. 发明授权
    • Metal induced self-aligned crystallization of Si layer for TFT
    • TFT的Si层的金属诱导自对准结晶
    • US06566687B2
    • 2003-05-20
    • US09765134
    • 2001-01-18
    • Paul S. AndryFrank R. LibschTakatoshi Tsujimura
    • Paul S. AndryFrank R. LibschTakatoshi Tsujimura
    • H01L2904
    • H01L29/78633H01L21/0237H01L21/02532H01L21/02672H01L27/12H01L27/1277H01L29/66757
    • The present invention discloses a semiconductor device, a thin film transistor (TFT), and a process for forming a TFT. The semiconductor device according to the present invention comprises a top-gate type thin film transistor (TFT), said top-gate type TFT being formed on a substrate, said top-gate type TFT comprising: an insulating layer deposited on said substrate; a source electrode and a drain electrode formed from a metal-dopant compound, said metal-dopant compound being deposited on said insulating layer; a polycrystalline Si (poly-Si) layer deposited on said insulating layer and said source electrode and said drain electrode; an ohmic contact layer being formed between said metal-dopant compound and said poly-Si layer through migration of said dopant from said metal-dopant compound; a gate insulating layer deposited on said poly-Si layer; and a gate electrode formed on said gate insulating layer, wherein said poly-Si layer is crystallized by metal induced lateral crystallization.
    • 本发明公开了半导体器件,薄膜晶体管(TFT)和TFT的形成工艺。 根据本发明的半导体器件包括顶栅型薄膜晶体管(TFT),所述顶栅型TFT形成在衬底上,所述顶栅型TFT包括:沉积在所述衬底上的绝缘层; 由金属 - 掺杂剂化合物形成的源电极和漏电极,所述金属 - 掺杂剂化合物沉积在所述绝缘层上; 沉积在所述绝缘层和所述源电极和所述漏电极上的多晶Si(多晶硅)层; 通过所述掺杂剂从所述金属掺杂剂化合物的迁移,在所述金属 - 掺杂剂化合物和所述多晶硅层之间形成欧姆接触层; 沉积在所述多晶硅层上的栅极绝缘层; 以及形成在所述栅极绝缘层上的栅电极,其中所述多晶硅层通过金属诱导的横向结晶而结晶。
    • 7. 发明授权
    • Method for fabricating self-aligned thin-film transistors to define a drain and source in a single photolithographic step
    • 用于在单个光刻步骤中制造自对准薄膜晶体管以限定漏极和源极的方法
    • US06338988B1
    • 2002-01-15
    • US09410280
    • 1999-09-30
    • Paul S. AndryFrank R. Libsch
    • Paul S. AndryFrank R. Libsch
    • H01L2100
    • H01L27/1288H01L27/1214H01L29/42384H01L29/4908H01L29/66765H01L29/78696
    • A method for forming a thin film transistor having source and drain electrodes self-aligned to a gate electrode by employing a single lithographic step includes forming an opaque gate electrode on a substrate, depositing a first dielectric layer on the gate electrode and the substrate, depositing a semiconductor layer on the first dielectric layer, and depositing a second dielectric layer on the semiconductor layer. A first photoresist is deposited on the second dielectric layer and patterned by employing the gate electrode as a mask for blocking light used to expose the first photoresist. The second dielectric layer is etched to form a top insulator portion of the second dielectric layer in alignment with the gate electrode. The first photoresist is removed. A doped semiconductor layer and a conductive layer are deposited. A second photoresist is formed on the conductive layer. The second photoresist is patterned to form components patterns and to form a contiguous transistor electrode pattern covering the top insulator portion. Non-selectively etching the second photoresist and the conductive layer, a gap is formed in the second photoresist for the transistor electrode pattern at the top insulator portion. The conductive layer and the doped semiconductor layer are etched selective to the second photoresist such that a source electrode and a drain electrode are formed which are self-aligned relative to the gate electrode.
    • 一种用于形成具有通过采用单个光刻步骤自对准到栅电极的源电极和漏电极的薄膜晶体管的方法包括在衬底上形成不透明栅电极,在栅电极和衬底上沉积第一介电层,沉积 在所述第一电介质层上的半导体层,以及在所述半导体层上沉积第二电介质层。 第一光致抗蚀剂沉积在第二介电层上,并通过采用栅电极作为遮挡用于曝光第一光致抗蚀剂的光的掩模进行图案化。 蚀刻第二电介质层以形成与栅极电极对准的第二电介质层的顶部绝缘体部分。 去除第一光致抗蚀剂。 沉积掺杂半导体层和导电层。 在导电层上形成第二光致抗蚀剂。 图案化第二光致抗蚀剂以形成部件图案并形成覆盖顶部绝缘体部分的连续晶体管电极图案。 非选择性地蚀刻第二光致抗蚀剂和导电层,在顶部绝缘体部分处的晶体管电极图案的第二光致抗蚀剂中形成间隙。 对第二光致抗蚀剂选择性地蚀刻导电层和掺杂半导体层,使得形成相对于栅电极自对准的源电极和漏电极。
    • 8. 发明授权
    • High performance thin film transistor and active matrix process for flat panel displays
    • 用于平板显示器的高性能薄膜晶体管和有源矩阵工艺
    • US06580127B1
    • 2003-06-17
    • US09409157
    • 1999-09-30
    • Paul S. AndryFrank R. Libsch
    • Paul S. AndryFrank R. Libsch
    • H01L2701
    • H01L29/78696H01L27/12H01L29/4908H01L29/66765H01L29/78618H01L29/78669
    • A transistor, in accordance with the present inventions includes a gate electrode layer formed on a substrate and an insulating layer formed on the gate electrode layer. A first conductive layer forms a first portion and a second portion separated by a gap therebetween. The gap is formed at a position corresponding to a gate electrode in the gate electrode layer. A doping layer is formed on the first portion and the second portion of the first conductive layer, forming a source and a drain for the transistor. A semiconductor layer is formed over the doping layer of the first portion and the second portion and in the gap in contact with the insulating layer such that upon activation of the gate electrode current flows across the gap directly between the first portion and the second portion in the first conductive layer. Methods for fabrication and other embodiments are also included.
    • 根据本发明的晶体管包括形成在基板上的栅电极层和形成在栅电极层上的绝缘层。 第一导电层形成第一部分和由它们之间的间隙隔开的第二部分。 间隙形成在与栅电极层中的栅电极对应的位置处。 在第一导电层的第一部分和第二部分上形成掺杂层,形成晶体管的源极和漏极。 半导体层形成在第一部分和第二部分的掺杂层上,并且在与绝缘层接触的间隙中,使得在激活栅极电极时,电流在第一部分和第二部分之间直接流过间隙 第一导电层。 还包括制造方法和其他实施例。