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    • 4. 发明申请
    • LIGHT EMITTING DIODE HAVING A MODULATION DOPING LAYER
    • 具有调制层的发光二极管
    • WO2010021457A2
    • 2010-02-25
    • PCT/KR2009003637
    • 2009-07-03
    • SEOUL OPTO DEVICE CO LTDKIM HWA MOK
    • KIM HWA MOK
    • H01L33/04
    • H01L33/04H01L33/025H01L33/32
    • Disclosed is a light emitting diode having a modulation doping layer. The light emitting diode has an n-type contact layer, a p-type contact layer, and an active region of a multi-quantum well structure containing an InGaN well layer. Here, the n-type contact layer includes a first modulation doping layer where n-type impurity doped InGaN layers and undoped InGaN layers are alternately stacked, and a second modulation doping layer where n-type impurity doped InGaN layers and undoped InGaN layers are alternately stacked. In addition, InGaN layers of the first modulation doping layer have the same composition, and InGaN layers of the second modulation doping layer have the same composition. Further, the second modulation doping layer is interposed between the first modulation doping layer and the active region, and an n-electrode contacts the first modulation doping layer. By employing the first modulation doping layer and the second modulation doping layer, a prolongation of the process time can be prevented and stresses in a multi-quantum well structure can be alleviated.
    • 公开了具有调制掺杂层的发光二极管。 发光二极管具有n型接触层,p型接触层和含有InGaN阱层的多量子阱结构的有源区。 这里,n型接触层包括交替层叠n型杂质掺杂InGaN层和未掺杂InGaN层的第一调制掺杂层和n型杂质掺杂InGaN层和未掺杂InGaN层交替堆叠的第二调制掺杂层 堆叠。 此外,第一调制掺杂层的InGaN层具有相同的组成,第二调制掺杂层的InGaN层具有相同的组成。 此外,第二调制掺杂层介于第一调制掺杂层和有源区之间,并且n电极接触第一调制掺杂层。 通过采用第一调制掺杂层和第二调制掺杂层,可以防止处理时间的延长,并且可以减轻多量子阱结构中的应力。
    • 5. 发明公开
    • Light emitting diode
    • 发光二极管
    • KR20100024154A
    • 2010-03-05
    • KR20080082874
    • 2008-08-25
    • SEOUL OPTO DEVICE CO LTD
    • KIM HWA MOK
    • H01L33/04H01L33/06
    • PURPOSE: A light emitting diode is provided to improve emitting efficiency by removing a depletion layer generated from an impurity doping and increasing the area in which carriers are recombined. CONSTITUTION: A light emitting diode includes a n-type contact layer(27) which is a nitride-based n-type semiconductor layer, a p-type semiconductor layer(33) which is a nitride-based p-type semiconductor layer. The light emitting diode includes a substrate(21), an un-doped GaN layer(25) and a nucleus layer(23). A transparent electrode(35) and a p-electrode(37) are arranged on the p-type contact layer. An n-electrode(39) is arranged on the n-type contact layer. The light emitting diode includes the active area(29) of a multiple-quantum-well structure in which a quantum well layer and a barrier layer are stacked by turns.
    • 目的:提供一种发光二极管,以通过去除由杂质掺杂产生的耗尽层并增加载流子重组的面积来提高发光效率。 构成:发光二极管包括作为氮化物系n型半导体层的n型接触层(27),作为氮化物系p型半导体层的p型半导体层(33)。 发光二极管包括衬底(21),未掺杂的GaN层(25)和核层(23)。 在p型接触层上配置有透明电极(35)和p电极(37)。 n型电极(39)配置在n型接触层上。 发光二极管包括多量子阱结构的有源区(29),其中量子阱层和势垒层被轮流堆叠。
    • 6. 发明公开
    • Light emitting diode
    • 发光二极管
    • KR20100084490A
    • 2010-07-26
    • KR20100052445
    • 2010-06-03
    • SEOUL OPTO DEVICE CO LTD
    • KIM HWA MOKKIM DAE WONKAL DAE SUNG
    • H01L33/38H01L33/42
    • H01L33/10H01L33/145H01L33/38H01L33/42
    • PURPOSE: A light emitting diode is provided to improve the current diffusing efficiency of a transparent electrode layer by preventing a current from directly flowing toward a p-type semiconductor layer or a tunnel layer. CONSTITUTION: An n-type semiconductor layer(220), an active layer(240), and a p-type semiconductor layer(260) are formed on a substrate(100). A transparent layer(320) is formed on the p-type semiconductor layer. The transparent layer includes an opening(342) which exposes the p-type semiconductor layer. A current blocking part is formed in the opening. An electrode pad is formed on the current blocking part.
    • 目的:提供一种发光二极管,用于通过防止电流直接流向p型半导体层或隧道层来提高透明电极层的电流扩散效率。 构成:在衬底(100)上形成n型半导体层(220),有源层(240)和p型半导体层(260)。 在p型半导体层上形成透明层(320)。 透明层包括暴露p型半导体层的开口(342)。 在开口中形成电流阻挡部分。 在电流阻挡部上形成电极焊盘。
    • 7. 发明公开
    • Light emitting diode
    • 发光二极管
    • KR20120011171A
    • 2012-02-07
    • KR20100072821
    • 2010-07-28
    • SEOUL OPTO DEVICE CO LTD
    • KIM HWA MOK
    • H01L33/10
    • H01L33/10H01L33/14H01L2924/12041
    • PURPOSE: A light emitting diode is provided to increase optical extraction efficiency by arranging a distributed Bragg reflector layer of a multi-layered structure on a lower surface of a substrate. CONSTITUTION: A first nitride semiconductor layer(25) is placed on an upper part of a substrate(21). An active layer(27) is placed on the upper part of the first nitride semiconductor layer. A second nitride semiconductor layer(31) is placed on the upper part of the active layer. A third nitride semiconductor layer(26) including an insulation pattern is placed between the first nitride semiconductor layer and the active layer. A distributed Bragg reflector(45) of a multi-layered structure is placed on a lower surface of the substrate.
    • 目的:提供一种发光二极管,以通过在衬底的下表面上布置多层结构的分布布拉格反射器层来提高光学提取效率。 构成:将第一氮化物半导体层(25)放置在基板(21)的上部。 在第一氮化物半导体层的上部放置有源层(27)。 第二氮化物半导体层(31)被放置在有源层的上部。 包括绝缘图案的第三氮化物半导体层(26)被放置在第一氮化物半导体层和有源层之间。 将多层结构的分布布拉格反射器(45)放置在基板的下表面上。