A display device including the semiconductor light emitting device according to an embodiment including a planarization layer disposed on the semiconductor light emitting device, a first opaque filler disposed to be spaced apart on the planarization layer, and a light reflective filling layer disposed around the semiconductor light emitting device, wherein the light reflective filling layer is positioned lower than the top surface of the semiconductor light emitting device.

A light-emitting device includes a first light emitter and a second light emitter. A first drive current through the first light emitter and a second drive current through the second light emitter flow in opposite directions. A period in which the first drive current flows and a period in which the second drive current flows at least partially overlap each other. This structure causes the phase of an electromagnetic wave induced by the first drive current to be opposite to the phase of an electromagnetic wave induced by the second drive current, thus allowing the electromagnetic waves to at least partially cancel each other and reducing electromagnetic interference.

Image display devices with suppressed generation of diffracted light are disclosed. In one example, an image display device includes pixels arranged two-dimensionally, and a pixel region including some of the pixels that has transmissive windows that transmit visible light and have different sizes. The pixels include a self-light-emitting element, a light emitting region in which light is emitted by the self-light-emitting element, and a non-light emitting region including the transmissive window.

A wall module of a modular LED wall includes an array of LED panels and a truck for supporting the array of LED panels and providing mobility thereto relative to a stage surface. The truck may include a support assembly including a first support base fixed to the array of LED panels, a second support base engageable with the first, and a plurality of ball bearings arranged between the first and second support bases to allow relative movement of the first and second support bases in a plane parallel to the stage surface, a plurality of omnidirectional wheels arranged to enable omnidirectional movement of the second support base along the stage surface, and one or more actuators operable to adjust a height of the support assembly at a plurality of positions on the support assembly to enable leveling of the support assembly relative to the stage surface.

A wall module of a modular LED wall includes an array of LED panels and a truck for supporting the array of LED panels and providing mobility thereto relative to a stage surface. The truck may include a support assembly including a first support base fixed to the array of LED panels, a second support base engageable with the first, and a plurality of ball bearings arranged between the first and second support bases to allow relative movement of the first and second support bases in a plane parallel to the stage surface, a plurality of omnidirectional wheels arranged to enable omnidirectional movement of the second support base along the stage surface, and one or more actuators operable to adjust a height of the support assembly at a plurality of positions on the support assembly to enable leveling of the support assembly relative to the stage surface.

A method of porosification of a structure including a base substrate covered with (Al,In,Ga)N/(Al,In,Ga)N mesas, including a porosification step during which the (Al,In,Ga)N/(Al,In,Ga)N mesas are electrochemically porosified, during the porosification step, the structure further comprises, between the mesas or between groups of mesas, electrically-conductive lines covered with an electrically-insulating element.

Provided is a light-emitting device including a body including a first semiconductor layer, an active layer, and a second semiconductor layer, a first electrode and a second electrode provided on a first surface of the body, the first electrode and the second electrode being in contact with the first semiconductor layer and the second semiconductor layer, respectively, and a third electrode and a fourth electrode provided on a second surface of the body, the third electrode and the fourth electrode being in contact with the first semiconductor layer and the second semiconductor layer, respectively.

The display device can include a substrate, a first assembling wiring on the substrate, a second assembling wiring on the first assembling wiring, an insulating layer between the first assembling wiring and the second assembling wiring, a partition wall disposed on the second assembling wiring and having an assembly hole, and a semiconductor light-emitting device in the assembly hole. A part of the second assembling wiring can be disposed at a center of the assembly hole, and a width of a part of the second assembling wiring can be smaller than a diameter of the assembly hole.

Disclosed are a light-emitting device, a manufacturing method thereof, and a display screen. In the light-emitting device, an isolation trench is formed from one side of the first semiconductor layer to one side of the second semiconductor layer. A reflective structure is formed on the side wall of the isolation trench and the first semiconductor layer, which helps to reduce light loss and improving the light output efficiency of the device. The isolation trench does not completely penetrate the second semiconductor layer, so that the second semiconductor layer located on the light output surface side is a continuous and uninterrupted integrated structure, and a surface thereof remains flat so that the transparent conductive layer has a flat structure, improving the overall coverage of the transparent conductive layer. The present invention has no cracks, peeling problems, thus improving the electrical stability of the device and increasing the reliability thereof.

Provided are a display baseplate, a mould assembly, a spliced display module, and a display apparatus. The display baseplate includes a backplate light emitters and an encapsulation layer. The backplate includes a first main surface and a second main surface that are opposite to each other, and side surfaces connected to the first main surface and the second main surface light emitters are located on the first main surface, the encapsulation layer is at least partially located on the first main surface and covers the plurality of light emitters. The spliced display module includes a splicing units, the splicing units each include a splicing frame and a display baseplate, the display baseplate is fixed on the splicing frame with the light emitters away from the splicing frame; and the splicing frames of adjacent splicing units are spliced together. The display apparatus includes a display baseplate or a spliced display module.