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    • 38. 发明申请
    • LOW TEMPERATURE POLY-SILICON THIN FILM TRANSISTOR AND MANUFACTURING METHOD THEREOF
    • 低温聚硅薄膜晶体管及其制造方法
    • US20150179460A1
    • 2015-06-25
    • US14241764
    • 2014-01-23
    • Shenzhen China Star Optoelectronics Technology Co., Ltd.
    • Xiangyang Xu
    • H01L21/28H01L29/786H01L29/51H01L29/66
    • H01L21/28229H01L21/28158H01L29/42384H01L29/4908H01L29/513H01L29/66757H01L29/78675H01L2029/42388
    • The present disclosure relates to a low temperature poly-silicon thin film transistor which possesses electrical characteristics and reliability, and a method of manufacturing the thin film transistor. The low temperature poly-silicon thin film transistor at least includes a gate insulating layer which is a composite insulating layer comprising at least three dielectric layers, wherein the compactness of each dielectric layer successively increases in order of the formation sequence thereof in the manufacturing process. Because the relation between the compactness of each layer of the composite insulating layer and that of the others thereof is taken into account according to the present disclosure, each layer in the composite insulating layer of the low temperature poly-silicon thin film transistor manufactured by the method according to the present disclosure can have enhanced surface contact characteristic and thin film continuity. The thickness of each layer in the composite insulating layer is further considered, so that the parasitic capacitance can be effectively reduced, and thus the response rate of the transistor can be improved. Namely, by improving the GI film forming quality, the electrical characteristic and reliability of the low temperature poly-silicon thin film transistor can be improved
    • 本公开涉及具有电特性和可靠性的低温多晶硅薄膜晶体管,以及制造薄膜晶体管的方法。 低温多晶硅薄膜晶体管至少包括栅极绝缘层,其是包括至少三个电介质层的复合绝缘层,其中每个电介质层的致密度在制造过程中依次形成顺序。 由于根据本公开考虑了复合绝缘层的各层的紧密度与其他层的紧密度之间的关系,所以由低温多晶硅薄膜晶体管制造的复合绝缘层中的每个层 根据本公开的方法可以具有增强的表面接触特性和薄膜连续性。 进一步考虑复合绝缘层中的各层的厚度,从而能够有效地降低寄生电容,从而能够提高晶体管的响应率。 也就是说,通过提高GI成膜质量,可以提高低温多晶硅薄膜晶体管的电特性和可靠性