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.

A light emitting device may include a substrate. A light emitting element layer may be disposed on the substrate and may include light emitting elements having a rod shape. A color conversion layer may be disposed on the light emitting element layer and may include color conversion elements having a rod shape. A first alignment direction of the light emitting elements and a second alignment direction of the color conversion elements may be substantially parallel to each other or intersect at a predetermined angle.

A light irradiating module comprises: a board; a plurality of wiring patterns which are formed on the board; and a plurality of LED elements which are disposed on the plurality of wiring patterns. The plurality of wiring patterns include: first wiring patterns each of which has a first straight part and a plurality of first protruding parts protruding from the first straight part; and second wiring patterns each of which has a second straight part and a plurality of second protruding parts protruding from the second straight part. The first wiring patterns and the second wiring patterns are disposed alternately, the plurality of first protruding parts and the plurality of second protruding parts adjacent thereto are aligned alternately, and the plurality of LED elements are disposed on the first protruding parts and the second protruding parts.

Provided is a light string with reduced power consumption and improved brightness, including: at least a first LED luminous body and a second LED luminous body in parallel, wherein each LED luminous body includes at least a resistor, a first LED light emitting chip and a second LED light emitting chip, and each LED luminous body is free of being provided with a current limiting IC chip, wherein the first LED light emitting chip and the second LED light emitting chip each include a plurality of LED light beads of the same specification in series, the first LED light emitting chip includes m LED light beads in series, and the second LED light emitting chip includes n LED light beads in series, and the resistor is in a series relationship with the first LED light emitting chip and the second LED light emitting chip.

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.

A light emitting element containing a Group III nitride semiconductor has a first light emitting region and a second light emitting region having different emission wavelengths, the first light emitting region has a plurality of first regions, the second light emitting region has a plurality of second regions, a planar pattern of the first light emitting region and the second light emitting region is a pattern in which a plurality of units are arranged in a predetermined direction, each of the units being a pattern including one or more of the first regions and one or more of the second regions, and the plurality of first regions are electrically connected to each other in parallel, and the plurality of second regions are electrically connected to each other in parallel.

A display device includes pixels including light-emitting elements disposed in each emission area. Each of the pixels includes at least one array including the light-emitting elements and disposed in the emission area, and a number of the light-emitting elements disposed in each of arrays of the pixels is greater than aa minimum number of the light-emitting elements in the each of the arrays having a normal distribution or Poisson distribution.

A display device includes a plurality of first LED modules, each including an LED array in which UV LEDs are arranged, and a plurality of second LED modules, each including an LED array in which MN LEDs are arranged, wherein each of the plurality of first LED modules includes a driving chip, and wherein at least some of the driving chips provided in the plurality of first LED modules drive an LED array included in a corresponding first LED module and LED arrays included in K second LED modules.