METHODS AND DISPLAY DEVICES FOR MICRO-LED MASS TRANSFER PROCESSES

    公开(公告)号:US20200013760A1

    公开(公告)日:2020-01-09

    申请号:US16119204

    申请日:2018-08-31

    摘要: A micro-LED macro transfer method, a micro-LED display device, and a method for fabricating the same are provided. In the micro-LED macro transfer method, the LED chips on an array are divided into a first plurality of LED chips and a second plurality of LED chips. An LED chip includes a first surface and a second surface. The first plurality of LED chips are configured so that their first surfaces are coupled to the first transfer substrate. The second plurality of LED chips are configured so that their second surfaces are coupled to the second transfer substrate. Accordingly, the first transfer substrate transfers the first plurality of LED chips to the first transfer substrate while the second transfer substrate transfers the second plurality of LED chips to the second transfer substrate.

    SEMICONDUCTOR WAFER AND METHOD FOR MANUFACTURING SEMICONDUCTOR WAFER THEREOF

    公开(公告)号:US20200219715A1

    公开(公告)日:2020-07-09

    申请号:US16826160

    申请日:2020-03-20

    摘要: Provided is a method for manufacturing a semiconductor wafer and a semiconductor wafer. The method includes: disposing a sacrificial layer on a first surface and a second surface of a patterned substrate, the patterned substrate comprising the first surface and the second surface having different normal directions; exposing the first surface by removing the first portion of the sacrificial layer disposed on the first surface; growing an original nitride buffer layer on the first surface and the second portion of the sacrificial layer; partially lifting off the second portion of the sacrificial layer disposed on the second surface such that at least one sub-portion of the second portion of the sacrificial layer remains on the second surface of the patterned substrate; and growing an epitaxial layer on the original nitride buffer layer, where a crystal surface of the epitaxial layer grows along a normal direction of the patterned substrate.

    LIGHT-EMITING DIODE DEVICE AND METHOD OF PRODUCING THE SAME

    公开(公告)号:US20190221709A1

    公开(公告)日:2019-07-18

    申请号:US16220264

    申请日:2018-12-14

    摘要: A light-emitting diode (LED) device and a method of producing the same are provided. The LED device comprises a first conductive layer, a second conductive layer, an active layer sandwiched between the first conductive layer and the second conductive layer and a first electrode in electrical contact with the first conductive layer. The first conductive layer has a laminate structure comprising a first conductive sub-layer, a current blocking layer, and a second conductive sub-layer. The first electrode comprises a first extended electrode in electrical contact with the first conductive sub-layer, and a second extended electrode in electrical contact with the second conductive sub-layer. The first conductive sub-layer and the second conductive sub-layer may have different depths.

    QUARTENARY LED WITH TRANSPARENT SUBSTRATE AND ALIGNED ELECTRODES

    公开(公告)号:US20190067525A1

    公开(公告)日:2019-02-28

    申请号:US16111117

    申请日:2018-08-23

    摘要: A light-emitting diode (LED) device (e.g., AlGaInP LED) includes a transparent substrate, an epitaxial structure defining an isolation trench and an epitaxial structure, an insulating passivation layer, a P electrode and an N electrode. The epitaxial structure is disposed above the transparent substrate. The isolation trench divides the epitaxial structure into a first portion and a second portion. The at least one through hole extends through the first portion. At least a portion of the insulating passivation layer is disposed in the isolation trench. The P electrode is disposed above the first portion of the epitaxial structure and in the at least one through hole. The N electrode is disposed above the second portion of the epitaxial structure. A top surface of the P electrode is horizontally aligned with a top surface of the N electrode.