Light emitting diode with high efficiency

    公开(公告)号:US10181548B2

    公开(公告)日:2019-01-15

    申请号:US15490492

    申请日:2017-04-18

    Abstract: A light emitting diode includes: a substrate; a semiconductor stack disposed on the substrate and including a lower semiconductor layer, an upper semiconductor layer and an active layer interposed between the lower semiconductor layer and the upper semiconductor layer, the semiconductor stack having an isolation groove exposing the substrate through the upper semiconductor layer, the active layer and the lower semiconductor layer; a first electrode pad and an upper extension portion electrically connected to the upper semiconductor layer; a second electrode pad and a lower extension portion electrically connected to the lower semiconductor layer; a connecting portion connecting the upper extension portion and the lower extension portion to each other across the isolation groove; a first current blocking layer interposed between the lower extension portion and the lower semiconductor layer; and a second current blocking layer interposed between the second electrode pad and the lower semiconductor layer.

    Light emitting diode having improved current spreading efficiency, improved mechanical reliability, or some combination thereof

    公开(公告)号:US10172190B2

    公开(公告)日:2019-01-01

    申请号:US15579370

    申请日:2016-05-18

    Abstract: A light emitting diode including a first semiconductor layer and a plurality of mesas including a second semiconductor layer and an active layer interposed between the first semiconductor layer and the second semiconductor layer, the first semiconductor layer including an exposed region between the plurality of mesas, a current blocking layer disposed on a portion of the plurality of mesas and a portion of the exposed region, a transparent electrode layer covering the second semiconductor layer and the current blocking layer, and a second electrode disposed on the current blocking layer and the transparent electrode layer and electrically connected to the second semiconductor layer. The current blocking layer includes a connecting portion extending from a first mesa to a second mesa adjacent to the first mesa and a protruding portion protruding from the connecting portion and disposed on the exposed region.

    LIGHT EMITTING ELEMENT INCLUDING ZnO TRANSPARENT ELECTRODE

    公开(公告)号:US20180138370A1

    公开(公告)日:2018-05-17

    申请号:US15870687

    申请日:2018-01-12

    CPC classification number: H01L33/42 H01L33/20 H01L33/22 H01L33/38

    Abstract: An exemplary light emitting diode is provided to comprise: a first semiconductor layer; a mesa disposed on the first semiconductor layer and including an active layer and a second semiconductor layer disposed on the active layer; a ZnO transparent electrode disposed on the mesa; a first electrode disposed on the first semiconductor layer; and a second electrode disposed on the ZnO transparent electrode, and including a second electrode pad and at least one second electrode extending portion extending from the second electrode pad. The second electrode extending portion contacts the ZnO transparent electrode. The ZnO transparent electrode includes a first region and a second region. The first region protrudes from the top surface of the ZnO transparent electrode, includes a plurality of projecting portions arranged in a predetermined pattern, the thickness of the first region greater than the thickness of the second region.

    Light emitting device
    18.
    发明授权

    公开(公告)号:US12009466B2

    公开(公告)日:2024-06-11

    申请号:US17983239

    申请日:2022-11-08

    CPC classification number: H01L33/62 H01L33/52

    Abstract: A light emitting device including first, second, and third light emitting parts one over another along a first direction, a first conductive pattern at least partially disposed between the second and third light emitting parts and including a first portion extending in a second direction perpendicular to the first direction and electrically coupled with the second light emitting part, and a second portion extending from one end of the first portion, a second conductive pattern disposed on and electrically coupled to the third light emitting part, and a first passivation covering the first light emitting part and including a first portion extending in the second direction and a second portion extending from one end of the first portion and forming an inclined angle with the second direction, in which the first conductive pattern at least partially overlaps with the second portion of the first passivation.

    Light emitting device for display and display apparatus having the same

    公开(公告)号:US11437353B2

    公开(公告)日:2022-09-06

    申请号:US17096289

    申请日:2020-11-12

    Abstract: A light emitting device including a first LED stack, a second LED stack, and a third LED stack each including first and second conductivity type semiconductor layers, a first bonding layer between the second and third LED stacks, a second bonding layer between the first and second LED stacks, a first planarization layer between the second bonding layer and the second LED stack, a second planarization layer disposed on the first LED stack, lower buried vias passing through the first planarization layer, the second LED stack, and the first bonding layer and electrically connected to the semiconductor layers of the third LED stack, respectively, and upper buried vias passing through the second planarization layer and the first LED stack, in which a width of an upper end of each of the lower buried vias and the upper buried vias is greater than a width of a corresponding through hole.

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