WO2021259356A1 - 芯片结构及其制作方法、显示装置 - Google Patents
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Abstract
Description
Claims (15)
- 一种芯片结构,包括:基底,设置于所述基底上的微型发光二极管和驱动晶体管,所述驱动晶体管的第一极与所述微型发光二极管的第一电极耦接。
- 根据权利要求1所述的芯片结构,其中,所述微型发光二极管包括多个膜层,所述驱动晶体管包括多个膜层,所述微型发光二极管中的每个膜层与所述驱动晶体管中的相应膜层同层设置。
- 根据权利要求2所述的芯片结构,其中,所述微型发光二极管的多个膜层包括:沿远离所述基底的方向依次层叠设置在所述基底上的:第一电流扩展层、发光功能层、第二电流扩展层以及位于所述第二电流扩展层背向所述基底的一侧的第二电极;所述驱动晶体管的多个膜层包括:设置于所述第一电流扩展层背向所述基底的一侧的第一有源层;设置于所述第一有源层背向所述基底的一侧的第三电流扩展层;设置于所述第三电流扩展层背向所述基底的一侧的第二极和第一栅极,所述第二极与所述第三电流扩展层耦接,所述第一栅极与所述第三电流扩展层绝缘;所述第一电流扩展层复用为所述第一电极和所述第一极。
- 根据权利要求3所述的芯片结构,其中,所述第一电流扩展层、所述第二电流扩展层和所述第三电流扩展层均为重掺杂膜层。
- 根据权利要求2所述的芯片结构,其中,所述微型发光二极管还包括:第一补偿电极,所述第一补偿电极位于所述第二电流扩展层与所述第二电极之间,所述第二电极通过所述第一补偿电极与所述第二电流扩展层耦接;所述驱动晶体管还包括:第二补偿电极,所述第二补偿电极位于所述第三电流扩展层与所述第二极之间,所述第二极通过所述第二补偿电极与所述第三电流扩展层耦接。
- 根据权利要求2所述的芯片结构,还包括开关晶体管,所述开关晶体 管包括多个膜层,所述开关晶体管中的每个膜层与所述驱动晶体管中的相应膜层同层设置。
- 根据权利要求6所述的芯片结构,其中,所述开关晶体管的多个膜层包括:设置于所述基底上的第四电流扩展层;设置于所述第四电流扩展层背向所述基底的一侧的第二有源层;设置于所述第二有源层背向所述基底的一侧的第五电流扩展层;设置于所述第五电流扩展层背向所述基底的一侧的第三补偿电极;设置于所述第四电流扩展层背向所述基底的表面的第三极,所述第三极与所述驱动晶体管的第一栅极耦接;设置于所述第三补偿电极背向所述基底的一侧的第四极和第二栅极,所述第四极与所述第三补偿电极耦接,所述第二栅极与所述第三补偿电极绝缘。
- 根据权利要求7所述的芯片结构,其中,所述第二电极、所述第二极、所述第三极和所述第四极采用金属材料制作。
- 根据权利要求1所述的芯片结构,还包括:设置于所述基底背向所述微型发光二极管的一侧的反射层;或者,设置于所述第二电流扩展层背向所述基底的一侧的反射层。
- 一种显示装置,包括多个如权利要求1~9中任一项所述的芯片结构,还包括阵列基板,所述阵列基板包括:衬底基板,以及设置于所述衬底基板上的第一电源信号线、第二电源信号线和多个存储电容;所述存储电容与所述芯片结构一一对应;多个所述芯片结构呈阵列分布在所述阵列基板上,每个芯片结构中,微型发光二极管的第二电极与所述第一电源信号线耦接,所述驱动晶体管的第二极与所述第二电源信号线耦接,所述驱动晶体管的第一栅极与存储电容的第一极板耦接,所述存储电容的第二极板与所述驱动晶体管的第二极耦接。
- 根据权利要求10所述的显示装置,其中,所述芯片结构还包括开关晶体管,所述阵列基板还包括多条栅线和多条数据线;所述栅线与所述数据线交叉设置;多个所述芯片结构划分为与所述多条栅线一一对应的多行芯片结构,每 行芯片结构中各芯片结构包括的开关晶体管的第二栅极分别与对应的栅线耦接;多个所述芯片结构划分为与所述多条数据线一一对应的多列芯片结构,每列芯片结构中各芯片结构包括的开关晶体管的第四极分别与对应的数据线耦接。
- 根据权利要求10所述的显示装置,其中,所述微型发光二极管的第二电极通过第三导电连接部与所述第一电源信号线耦接,所述驱动晶体管的第二极通过第一导电连接部与所述第二电源信号线耦接,所述驱动晶体管的第一栅极通过第二导电连接部与存储电容的第一极板耦接。
- 一种芯片结构的制作方法,用于制作如权利要求1~9中任一项所述的芯片结构,所述制作方法包括:在基底上制作微型微型发光二极管和驱动晶体管,所述驱动晶体管的第一极与所述微型发光二极管的第一电极耦接。
- 根据权利要求13所述的芯片结构的制作方法,其中,制作微型发光二极管和驱动晶体管包括:在基底上形成第一电流扩展层;所述第一电流扩展层复用所述第一极和所述第一电极;在所述第一电流扩展层背向所述基底的一侧,形成发光功能层和第一有源层;通过一次构图工艺,同时形成位于所述发光功能层背向所述基底的一侧的第二电流扩展层,以及位于所述第一有源层背向所述基底的一侧的第三电流扩展层;通过一次构图工艺,同时形成位于所述第二电流扩展层背向所述基底的一侧的第一补偿电极,以及位于所述第三电流扩展层背向所述基底的一侧的第二补偿电极;形成覆盖所述第一补偿电极和所述第二补偿电极的绝缘层,在所述绝缘层上形成有第一过孔和第二过孔,所述第一过孔暴露部分所述第一补偿电极,所述第二过孔暴露部分所述第二补偿电极;通过一次构图工艺,同时形成位于所述绝缘层背向所述基底的一侧的第 二电极、第二极和第一栅极,所述第二电极通过所述第一过孔与所述第一补偿电极耦接,所述第二极通过所述第二过孔与所述第二补偿电极耦接。
- 根据权利要求14所述的芯片结构的制作方法,其中,所述芯片结构还包括开关晶体管,所述开关晶体管包括第四电流扩展层、第二有源层、第五电流扩展层、第三补偿电极、第三极第四极和第二栅极,所述方法还包括:通过同一次构图工艺,同时在基底上形成所述第一电流扩展层和第四电流扩展层;通过同一次构图工艺,同时形成所述第一有源层,以及位于所述第四电流扩展层背向所述基底的一侧的第二有源层;通过同一次构图工艺,同时形成所述第二电流扩展层,所述第三电流扩展层,以及位于所述第二有源层背向所述基底的一侧的第五电流扩展层;通过同一次构图工艺,同时形成所述第一补偿电极,所述第二补偿电极,以及位于所述第五电流扩展层背向所述基底的一侧的第三补偿电极;所述绝缘层覆盖所述第三补偿电极;通过同一次构图工艺,在所述绝缘层上同时形成所述第一过孔、所述第二过孔、第三过孔和第四过孔,所述第三过孔暴露部分所述第四电流扩展层,所述第四过孔暴露部分所述第三补偿电极;通过一次构图工艺,同时形成所述第二电极、所述第二极、所述第一栅极、第三极、第四极和第二栅极,所述第三极与所述第一栅极耦接,所述第三极还通过所述第三过孔与所述第四电流扩展层耦接,所述第四极通过所述第四过孔与所述第三补偿电极耦接。
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CN112447786B (zh) * | 2020-11-23 | 2022-09-30 | 厦门天马微电子有限公司 | 发光二极管显示面板及其制作方法、发光二极管显示装置 |
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