Abstract: A system for replacing a battery of a mobility is proposed and includes: a battery mounting part provided on an outer surface of a mobility and having a mounting space defined therein, the mounting space being open to an outside, with a battery mounted in the mounting space, and a battery replacement module having a new battery provided therein and mounting the new battery in the mounting space of the battery mounting part after removing the existing battery to be replaced by rotating the new battery and the existing battery together when the battery replacement module approaches the battery mounting part of the mobility.

Abstract: The present disclosure relates to a plurality of host materials comprising a first host material comprising a compound represented by formula 1 and a second host material comprising a compound represented by formula 2, and an organic electroluminescent device comprising the same. By comprising a specific combination of compounds as a host material, an organic electroluminescent device having a lower driving voltage and/or higher luminous efficiency and/or improved lifespan properties compared to a conventional organic electroluminescent device may be provided.

Abstract: A semiconductor memory device with improved performance by improving interface characteristics while reducing a leakage current, and a method for fabricating the same are provided. The semiconductor memory device includes a conductive line on a substrate, a first interlayer insulating layer exposing the conductive line and defining a channel trench on the substrate, a channel layer extending along a bottom and side surface of the channel trench, a first gate electrode and a second gate electrode spaced apart from each other in the channel trench, a first gate insulating layer between the channel layer and the first gate electrode, and a second gate insulating layer between the channel layer and the second gate electrode. The channel layer includes a first oxide semiconductor layer and a second oxide semiconductor layer sequentially stacked on the conductive line. The first oxide semiconductor layer has a greater crystallinity than the second oxide semiconductor layer.

Abstract: The present disclosure relates to a composition material for an organic electroluminescent device, a plurality of host materials, and an organic electroluminescent device comprising the same. By comprising the composition material for an organic electroluminescent device of the present disclosure, it is possible to provide an organic electroluminescent device having high luminous efficiency and/or long lifespan characteristics.

Abstract: The present disclosure relates to an organic electroluminescent compound represented by Formula 1, an organic electroluminescent material, and an organic electroluminescent device comprising the same. By comprising the organic electroluminescent compound or the organic electroluminescent material of the present disclosure, an organic electroluminescent device having improved driving voltage, luminous efficiency and/or lifetime characteristics can be provided.

Abstract: A substrate treatment apparatus includes a process chamber including a substrate treatment space and a disk on which a substrate is seated; and a showerhead provided on the process chamber, the showerhead including: a body; an inlet space in which a fluid is configured to flow through; and a plurality of spray holes provided on a lower surface of the body and configured to spray the fluid toward a substrate, where the plurality of spray holes are inclined at an angle with respect to the lower surface of the body.

Abstract: The present disclosure relates to a plurality of host materials comprising at least one first host compound represented by Formula 1 and at least one second host compound represented by Formula 3 different from the first host compound, and an organic electroluminescent device comprising the same. By comprising a specific combination of compounds according to the present disclosure as host materials, an organic electroluminescent device having low driving voltage, high luminous efficiency, and/or significantly improved lifespan characteristic, can be provided.

Abstract: The present disclosure relates to a plurality of host materials comprising at least one first host compound and at least one second host compound and an organic electroluminescent device comprising the same. By comprising the specific combination of the compound according to the present disclosure as host materials, an organic electroluminescent device having low driving voltage, high luminous efficiency, and long lifespan characteristics can be prepared.

Abstract: The present disclosure relates to a plurality of host materials comprising a first host material comprising a compound represented by formula 1, and a second host material comprising a compound represented by formula 2, and an organic electroluminescent device comprising the same. By comprising a specific combination of compounds of the present disclosure as host materials, it is possible to provide an organic electroluminescent device having improved lifetime properties as compared with a conventional organic electroluminescent device.

Abstract: A method of manufacturing a display device includes: preparing a cover window including a bent part on a side surface thereof, and a guide film including a surface on which a display panel and an adhesive layer are arranged; arranging the cover window and the guide film in a face-to-face manner such that the adhesive layer faces the cover window; seating the guide film onto a seating pad of a first jig; pre-forming the display panel by bringing opposite ends of the guide film into close contact with opposite side surfaces of the seating pad using a pair of push members; and joining the display panel with the cover window by bringing the adhesive layer into contact with the cover window.

Abstract: The present disclosure relates to a plurality of host materials comprising a compound represented by formula 1 and a compound represented by formula 2, and an organic electroluminescent device comprising the same. By comprising the plurality of host materials comprising a specific combination of compounds, it is possible to provide an organic electroluminescent device having long lifespan characteristics.

Abstract: The present disclosure relates to a plurality of host materials comprising a first host material comprising a compound represented by formula 1, and a second host material comprising a compound represented by formula 2, and an organic electroluminescent device comprising the same. By comprising a specific combination of compounds as host materials, it is possible to provide an organic electroluminescent device having lower driving voltage, higher luminous efficiency, higher power efficiency, and/or superior lifespan characteristics compared to conventional organic electroluminescent devices.

Abstract: The present invention relates to an organic electroluminescent compound and an organic electroluminescent device comprising the same. The organic electroluminescent compound according to the present invention can be comprised in a light-emitting layer or an electron buffer layer, and is effective to produce an organic electroluminescent device having low driving voltage, excellent current and power efficiencies, and significantly improved operational lifespan.

Abstract: The present disclosure relates to a plurality of host materials, an organic electroluminescent compound, and an an organic electroluminescent device comprising the same. By comprising the specific combination of the compounds according to the present disclosure as a plurality of host materials or the compound according to the present disclosure, an organic electroluminescent device with improved driving voltage, luminous efficiency, and/or lifespan characteristics compared to a conventional organic electroluminescent device can be provided.

Abstract: The present disclosure relates to a plurality of host materials comprising a first host material having a compound represented by formula 1, and a second host material having a compound represented by formula 2, and an organic electroluminescent device comprising the same. By comprising a specific combination of compounds of the present disclosure as host materials, it is possible to provide an organic electroluminescent device having higher luminous efficiency and/or longer lifespan properties as compared with a conventional organic electroluminescent device.

Abstract: The present disclosure relates to an organic electroluminescent compound, a plurality of host materials, and an organic electroluminescent device comprising the same. By comprising the organic electroluminescent compound according to the present disclosure or by comprising a specific combination of compounds according to the present disclosure as a plurality of host materials, it is possible to produce an organic electroluminescent device having improved luminous efficiency, and/or lifetime properties compared to the conventional organic electroluminescent devices.

Abstract: The present disclosure relates to an organic electroluminescent compound and an organic electroluminescent device comprising the same. By comprising the organic electroluminescent compound, an organic electroluminescent device having a low driving voltage and/or a high luminous efficiency and/or a long lifespan can be provided.

Abstract: The present disclosure relates to a plurality of host materials comprising at least one first host compound and at least one second host compound, and an organic electroluminescent device comprising the same. By comprising a specific combination of the compounds wherein the first host compound is represented by formula 1 and the second host compound is represented by formula 2, it is possible to provide an organic electroluminescent device having improved driving voltage, luminous efficiency, power efficiency and/or lifetime property.

Abstract: The present disclosure relates to a plurality of host materials, an organic electroluminescent compound, and an organic electroluminescent device comprising the same. By comprising a specific combination of host compounds and/or an organic electroluminescent compound according to the present disclosure as an organic electroluminescent material, an organic electroluminescent device having low driving voltage and/or high luminous efficiency and/or long lifespan characteristics can be provided.

Abstract: The present disclosure relates to an organic electroluminescent compound and an organic electroluminescent device comprising the same. By comprising the compound according to the present disclosure, it is possible to produce an organic electroluminescent device having improved driving voltage, power efficiency, and/or lifetime properties compared to the conventional organic electroluminescent devices.