Abstract:
A method for transferring a semiconductor structure is provided. The method includes: coating an adhesive layer onto a carrier substrate; disposing the semiconductor structure onto the adhesive layer, in which the adhesive layer includes an adhesive component and an surfactant component after the disposing, the semiconductor structure includes a body and a bottom electrode, and the bottom electrode is disposed between the body and the adhesive layer after the disposing; irradiating a first electromagnetic wave to the adhesive layer to reduce adhesion pressure of the adhesive layer to the semiconductor structure while the semiconductor structure remains on the adhesive layer, in which the carrier substrate, the semiconductor structure, and the bottom electrode have a pass band in between ultraviolet to infrared; and transferring the semiconductor structure from the adhesive layer to a receiving substrate after the adhesion pressure of the adhesive layer is reduced.
Abstract:
A method for manufacturing at least one light emitting diode (LED) includes epitaxying at least one light emitting diode (LED) structure on a growth substrate; forming at least one supporting layer on the LED structure; temporarily adhering the supporting layer to a carrier substrate through an adhesive layer, in which the supporting layer has a Young's modulus greater than that of the adhesive layer; and removing the growth substrate from the LED structure.
Abstract:
A micro-light-emitting diode (micro-LED) includes a first type semiconductor layer, a second type semiconductor layer, a first edge isolation structure, a first electrode, and a second electrode. The second type semiconductor layer and the first edge isolation structure are joined with the first type semiconductor layer. The first electrode is electrically coupled with the first type semiconductor layer. At least a part of a vertical projection of an edge of the first type semiconductor layer on the first electrode overlaps with the first electrode. The first edge isolation structure is at least partially located on the part of the first type semiconductor layer. The second electrode is electrically coupled with the second type semiconductor layer.
Abstract:
A micro-light-emitting diode (micro-LED) includes a first type semiconductor layer, a second type semiconductor, a first current controlling layer, a first electrode, and a second electrode. The second type semiconductor layer and the first current controlling layer are joined with the first type semiconductor layer. The first current controlling layer has at least one opening therein. The first electrode is electrically coupled with the first type semiconductor layer through the opening. The second electrode is electrically coupled with the second type semiconductor layer. At least one of the first electrode and the second electrode has a light-permeable part. A vertical projection of the first current controlling layer on said one of the first electrode and the second electrode overlaps with the light-permeable part. The light-permeable part is transparent or semi-transparent.
Abstract:
A method for preparing a plurality of micro-devices for transfer includes temporarily bonding the micro-devices onto a carrier substrate; testing the micro-devices on the carrier substrate to determine if there is at least one first failed micro-device in the micro-devices; and removing the first failed micro-device from the carrier substrate.
Abstract:
A micro-light emitting diode (micro-LED) device includes a receiving substrate and a micro-LED. The micro-LED includes a first type semiconductor layer, a second type semiconductor layer, a current controlling layer, at least one reflective layer, and at least one first electrode. The second type semiconductor layer is joined with the first type semiconductor layer. The current controlling layer is joined with one of the first type semiconductor layer and the second type semiconductor layer, the current controlling layer having at least one opening therein. The reflective layer electrically is coupled with the first type semiconductor layer. The first electrode is disposed on a surface of the reflective layer facing the receiving substrate. The first electrode forms an adhesive bonding system with the receiving substrate.
Abstract:
A light-emitting diode (LED) includes a first type semiconductor layer, a second type semiconductor layer, a first current controlling structure, and a first electrode. The second type semiconductor layer is joined with the first type semiconductor layer. The second type semiconductor layer has a first region and a second region, in which the first region has a first threading dislocation density, the second region has a second threading dislocation density, and the first threading dislocation density is greater than the second threading dislocation density. The first current controlling structure is joined with the first type semiconductor layer and has at least one first current-injecting zone therein, in which the vertical projection of the second region on the first current controlling structure at least partially overlaps with the first current-injecting zone. The first electrode is electrically coupled with the first type semiconductor layer.
Abstract:
A pixel includes a first driving transistor, a first control circuit, a second driving transistor, and a second control circuit. The first driving transistor is configured to drive a first light emitting diode according to a first driving signal and a first supply voltage from a first voltage supply. The first control circuit is configured to generate the first driving signal according to a first data voltage and a scan signal. The second driving transistor is configured to drive a second light emitting diode according to a second driving signal and a second supply voltage from a second voltage supply. The second control circuit is configured to generate the second driving signal according to a second data and the scan signal. The first supply voltage and the second supply voltage are different from each other.
Abstract:
A method for repairing a light-emitting diode (LED) lighting device is provided. The method includes the operations below. First, the LED lighting device is obtained. The LED lighting device includes a substrate having a top surface and a recess, a first bottom electrode disposed on the top surface and on a bottom surface of the recess, a second bottom electrode disposed on the top surface, an LED disposed in the recess and on the first bottom electrode, and a top transparent electrode disposed on the LED and the second bottom electrode. Then, a test is performed to know whether the first bottom electrode, the LED, the top transparent electrode, and the second bottom electrode form a part of an electrical loop. Finally, a connecting member is formed to electrically connect the first bottom electrode and the second bottom electrode if the electrical loop is open.
Abstract:
A method for manufacturing a light-emitting diode (LED) includes plural steps as follows. A first type semiconductor layer is formed. A second type semiconductor layer is formed on the first type semiconductor layer. An impurity is implanted into a first portion of the second type semiconductor layer. The concentration of the impurity present in the first portion of the second type semiconductor layer is greater than the concentration of the impurity present in a second portion of the second type semiconductor layer after the implanting, such that the resistivity of the first portion of the second type semiconductor layer is greater than the resistivity of the second portion of the second type semiconductor layer.