Abstract: A display device includes: a first substrate; a second substrate overlapping the first substrate; a common electrode disposed on the second substrate; a column spacer disposed between the pixel electrode and the common electrode; and a plurality of pixels. Each of the plurality of pixels includes a transistor disposed on the first substrate and a pixel electrode electrically connected to the transistor through a hole. The display device further includes a plurality of column spacers disposed between the pixel electrode and the common electrode. The plurality of column spacers include a main spacer having a first height and a sub-spacer having a second height that is different from the first height. At least one of the main spacer and the sub-spacer includes a first spacer having a first planar area and a second planar spacer having a second planar area that is different from the first planar area.

Abstract: An ink for manufacturing a display device includes a solvent; and light emitting elements disposed in the solvent, wherein the light emitting elements include a first semiconductor layer including a first type of semiconductor and a second semiconductor layer including a second type of semiconductor, and an electrical conductivity of the ink is about 1.5 ?S/m or less. Also provided are a method of manufacturing a display device using the ink and a display device manufactured by the method.

Abstract: An ink includes a solvent, and light-emitting elements dispersed in the solvent, each of the light-emitting elements comprising semiconductor layers and an insulating film partially surrounding outer surfaces of the semiconductor layers, wherein the solvent has Hansen solubility parameters of a polarity parameter between about 4 and about 9 and a hydrogen bonding parameter between about 6 and about 11.

Abstract: A light emitting element ink comprises a light emitting element solvent, a light emitting element dispersed in the light emitting element solvent, the light emitting element including a plurality of semiconductor layers, and an insulating film surrounding outer surfaces of the plurality of semiconductor layers, and a thickener dispersed in the light emitting element solvent, wherein the thickener includes a compound represented by Chemical Structural Formula 1 as a polyol-based compound capable of forming a hydrogen bond with the light emitting element solvent or another thickener, and the thickener has a boiling point in a range of about 200° C. to about 450° C.

Abstract: A light-emitting element ink, a display device, and a method of fabricating the display device are provided. The light-emitting element ink includes a light-emitting element solvent, light-emitting elements dispersed in the light-emitting element solvent, each of the light-emitting elements including a plurality of semiconductor layers and an insulating film that surrounds parts of outer surfaces of the semiconductor layers, and a surfactant dispersed in the light-emitting element solvent, the surfactant including a fluorine-based and/or a silicon-based surfactant.

Abstract: A light emitting element ink and a method of manufacturing a display device are provided. The light emitting element ink includes a light emitting element solvent, a light emitting element dispersed in the light emitting element solvent, the light emitting element including a plurality of semiconductor layers and an insulating film surrounding outer surfaces of the semiconductor layers, a thickener dispersed in the light emitting element solvent, wherein a compound of the thickener includes a functional group capable of forming a hydrogen bond together with a compound of the light emitting element solvent or another compound of the thickener and the compound of the thickener is represented by Chemical Formula 1.

Abstract: A display device includes: a first substrate; a second substrate overlapping the first substrate; a common electrode disposed on the second substrate; a column spacer disposed between the pixel electrode and the common electrode; and a plurality of pixels. Each of the plurality of pixels includes a transistor disposed on the first substrate and a pixel electrode electrically connected to the transistor through a hole. The display device further includes a plurality of column spacers disposed between the pixel electrode and the common electrode. The plurality of column spacers include a main spacer having a first height and a sub-spacer having a second height that is different from the first height. At least one of the main spacer and the sub-spacer includes a first spacer having a first planar area and a second planar spacer having a second planar area that is different from the first planar area.

Abstract: The present invention relates to a method for controlling the frequency of a stand-alone microgrid wherein an energy storage device of the stand-alone microgrid is operated as a main power source by controlling a battery power conditioning system (PCS) of the stand-alone microgrid in a constant voltage constant frequency (CVCF) mode. According to the present invention, it is possible to operate the frequency stably while considering the fuel cost and power generation efficiency of a stand-alone microgrid.

Abstract: The present invention relates to a power conditioning system (PCS) efficiency-considered microgrid operation device comprising: a scheduling unit for scheduling outputs of a controllable load, a battery, and an emergency internal combustion generator operated in a microgrid; and an operation control unit for controlling the operation of the battery, the emergency internal combustion generator, and the controllable load according to charging/discharging of the battery, the output or the emergency internal combustion generator, and the output of the controllable load, which have been scheduled by the scheduling unit, wherein the scheduling unit schedules charging/discharging by considering the efficiency of a PCS such that a mate of charge (SOC) of the battery is maintained within a preset range. According to the present invention, the microgrid can be efficiently operated by considering the charging/discharging efficiency of the PCS.

Abstract: A liquid crystal display device includes a first substrate; a switching element including a control electrode disposed on the first substrate, one electrode disposed on the control electrode, and another electrode disposed on the control electrode and spaced apart from the one electrode; a contact hole extending to at least a part of the another electrode of the switching element; a pixel electrode including a contact portion disposed on the another electrode of the switching element and overlapping at least a part of the another electrode to which the contact hole extends, and a body portion electrically connected with the contact portion; and a column spacer disposed on the pixel electrode and at least partially overlapping the contact hole.

Abstract: A liquid crystal display device includes a first substrate; a switching element including a control electrode disposed on the first substrate, one electrode disposed on the control electrode, and another electrode disposed on the control electrode and spaced apart from the one electrode; a contact hole extending to at least a part of the another electrode of the switching element; a pixel electrode including a contact portion disposed on the another electrode of the switching element and overlapping at least a part of the another electrode to which the contact hole extends, and a body portion electrically connected with the contact portion; and a column spacer disposed on the pixel electrode and at least partially overlapping the contact hole.

Abstract: A display device includes a first substrate, thin film transistors, a color filter layer, a light blocking pattern, a second substrate, pixel electrodes, and, a plurality of first spacers. The first substrate includes a display area having a plurality of pixel areas and a non-display area surrounding at least part of the display area, the display area including an interior area and at least one peripheral area disposed exteriorly of the interior area. The second substrate defines with the first substrate a space to contain light transmittance material. The plurality of first spacers is disposed in the light transmittance space between the first and second substrates and only in the interior area of the display area.

Abstract: The present invention provides a system and a method for switching a line short-circuit fault section in an inverter-based stand-alone microgrid, the system comprising: multiple intelligent switchgears disposed on a line in a stand-alone microgrid so as to control opening or closing of the line; a battery inverter having a built-in current limiter so as to limit a current output therefrom; and an operating system for receiving short-circuit fault information of the line from the multiple intelligent switchgears, determining a fault section, and controlling the battery inverter to limit the output current. The present invention can quickly and accurately switch a line short-circuit fault section occurring in a stand-alone microgrid which does not include separate cutoff equipment such as a recloser.

Abstract: The present invention relates to a method for controlling the frequency of a stand-alone microgrid wherein an energy storage device of the stand-alone microgrid is operated as a main power source by controlling a battery power conditioning system (PCS) of the stand-alone microgrid in a constant voltage constant frequency (CVCF) mode. According to the present invention, it is possible to operate the frequency stably while considering the fuel cost and power generation efficiency of a stand-alone microgrid.

Abstract: The present invention relates to a power conditioning system (PCS) efficiency-considered microgrid operation device comprising: a scheduling unit for scheduling outputs of a controllable load, a battery, and an emergency internal combustion generator operated in a microgrid; and an operation control unit for controlling the operation of the battery, the emergency internal combustion generator, and the controllable load according to charging/discharging of the battery, the output of the emergency internal combustion generator, and the output of the controllable load, which have been scheduled, by the scheduling unit, wherein the scheduling unit schedules charging/discharging by considering the efficiency of a PCS such that a state of charge (SOC) of the battery is maintained within a preset range. According to the present invention, the microgrid can be efficiently operated by considering the charging/discharging efficiency of the PCS.

Abstract: A liquid crystal display device includes a first substrate; a switching element including a control electrode disposed on the first substrate, one electrode disposed on the control electrode, and another electrode disposed on the control electrode and spaced apart from the one electrode; a contact hole extending to at least a part of the another electrode of the switching element; a pixel electrode including a contact portion disposed on the another electrode of the switching element and overlapping at least a part of the another electrode to which the contact hole extends, and a body portion electrically connected with the contact portion; and a column spacer disposed on the pixel electrode and at least partially overlapping the contact hole.

Abstract: A display device includes a first substrate, thin film transistors, a color filter layer, a light blocking pattern, a second substrate, pixel electrodes, and, a plurality of first spacers. The first substrate includes a display area having a plurality of pixel areas and a non-display area surrounding at least part of the display area, the display area including an interior area and at least one peripheral area disposed exteriorly of the interior area. The second substrate defines with the first substrate a space to contain light transmittance material. The plurality of first spacers is disposed in the light transmittance space between the first and second substrates and only in the interior area of the display area.

Abstract: A display device and a method for manufacturing the display device are provided. According to an exemplary embodiment, a display device includes: a first substrate on which a display area and a non-display area disposed outside the display area are defined; a second substrate facing the first substrate; a liquid crystal layer disposed between the first and second substrates; a first color filter disposed in the non-display area; a second color filter disposed on the first color filter; a first organic film disposed on the second color filter; and a seal pattern formed on the first organic film and overlapping with at least one of the first and second color filters.