Lg Electronics Inc.

Lg Display Co., Ltd.

Jeonghyo Kwon

Indo Chung

Soohyun Kim

Junoh Shin

Dohan Kim

Seongeun Lee

Taeyoung Kwon

Youngdo Kim

Sungyun Park

Mann Yi

The present invention relates to a display apparatus, specifically to a display apparatus using semiconductor light-emitting elements of a few micrometers to tens of micrometers in size. The present invention provides a display apparatus comprising: a base part; a partition part having a plurality of grooves; a plurality of semiconductor light-emitting elements arranged on the base part and mounted in the plurality of grooves; first and second wiring electrodes arranged on one side and the other side of each of the semiconductor light-emitting elements, respectively; an assembly electrode arranged on the base part and arranged on the one side of each of the semiconductor light-emitting elements; and a dielectric layer arranged on the base part and arranged between the assembly electrode and the first wiring electrode, wherein each of the plurality of grooves includes at least one recess portion formed in the horizontal direction with respect to the base part.

Display apparatus using semiconductor light-emitting device

The present invention is applicable to display device-related technical fields and, for example, relates to a display device using micro LED (Light Emitting Diode) and a method of manufacturing the same. The present invention includes a substrate including a pixel area and a pad area located around the pixel area; a barrier layer located on the substrate and defining a plurality of unit pixel areas within the pixel area; a stress separation line located between the unit pixel areas on the barrier layer; a first electrode located in the unit pixel area; a semiconductor light emitting device in which a first type electrode is electrically connected to the first electrode within the unit pixel area; a coating layer formed on the semiconductor light emitting device and the barrier layer; and a second electrode electrically connected to the type second electrode of the semiconductor light emitting device on the coating layer.

Display apparatus using semiconductor light-emitting device, and manufacturing method therefor

A display apparatus according to the present invention comprises a substrate including semiconductor light-emitting devices and a wiring electrode electrically connected to the semiconductor light-emitting devices, wherein the substrate comprises: a base portion; assembly electrodes extending in one direction and arranged on the base portion; a dielectric layer formed to cover the assembly electrodes; a barrier portion formed on the dielectric layer while forming a cell on which the semiconductor light-emitting devices are mounted along an extension direction of the assembly electrodes; and a planarization layer formed to cover the barrier portion while forming a hole overlapping the cell, wherein the hole comprises: a first hole exposing the semiconductor light-emitting device; and a second hole exposing the dielectric layer or the base portion.

Discussed is a display device including a base portion; assembly electrodes that extend in one direction and are disposed on the base portion at predetermined intervals; a dielectric layer deposited on the base portion to cover the assembly electrodes; a first wiring electrode that extends in the same direction as the assembly electrodes and is disposed on the dielectric layer so as not to overlap the assembly electrodes; a partition wall portion deposited on the dielectric layer while arranging cells at predetermined intervals to overlap the assembly electrodes and the first wiring electrode along an extension direction of the assembly electrodes; and semiconductor light-emitting elements seated in the cells, respectively, wherein a solder layer electrically connecting a semiconductor light-emitting element seated in a cell and the first wiring electrode overlapping the cell is filled in the cell from among the plurality semiconductor light emitting elements and the cells.

Display device using semiconductor light-emitting elements, and manufacturing method therefor

The present disclosure provides a novel form of a display device which enables semiconductor light emitting elements having a vertical structure to be assembled onto a substrate and then wiring process to be performed stably without any change to the position of the elements during post-processing. The display device according to one embodiment of the present disclosure comprises: a substrate; a pair of assembly electrodes positioned on the substrate; a dielectric layer positioned on the assembly electrodes; a wiring electrode positioned on the dielectric layer and comprising a base electrode part and a low melting point junction; a partition wall which overlaps with a portion of the wiring electrode, is positioned on the dielectric layer, and defines an assembly groove to which a semiconductor light emitting element is assembled; and the vertical semiconductor light emitting element which is assembled in the assembly groove and is electrically connected to the low melting point junction of the wiring electrode, wherein the low melting point junction has a flow stop angle for controlling the thermal flow characteristic of the junction.

Display device using micro LED, and manufacturing method therefor

The present specification provides a new type of a display device in which a wiring process is easily performed after a semiconductor light emitting element having a vertical structure is assembled on a substrate. Here, a semiconductor light emitting device according to an embodiment of the present invention is characterized by comprising: a substrate; a wiring electrode positioned on the substrate; a dielectric film positioned on the wiring electrode; an assembly electrode positioned on the dielectric film; an assembly insulating film positioned on the assembly electrode; a partition wall positioned on the assembly insulting film and defining an assembly groove to which a semiconductor light emitting element is assembled; and the semiconductor light emitting element which is assembled to the assembly groove and provided with conductive electrodes on both ends thereof, wherein the wiring electrode is provided with a protrusion portion, and the protrusion portion protrudes toward the assembly groove and is electrically connected to the conductive electrode on one end of the semiconductor light emitting element.

Display device using micro LED and method for manufacturing same

A method for manufacturing a solar cell includes performing a dry etching process to form a textured surface including a plurality of minute protrusions on a first surface of a semiconductor substrate, performing a first cleansing process for removing damaged portions of surfaces of the minute protrusions using a basic chemical and removing impurities adsorbed on the surfaces of the minute protrusions, performing a second cleansing process for removing impurities remaining or again adsorbed on the surfaces of the minute protrusions using an acid chemical after performing the first cleansing process, and forming an emitter region at the first surface of the semiconductor substrate.

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Seoul, South Korea

Jeonghyo Kwon