A light emitting device according to an exemplary embodiment includes a first light emission region and a second light emission region. The first and second light emission regions include a first conductivity type semiconductor layer, a second conductivity type semiconductor layer, and an active region formed between the first conductivity type semiconductor layer and the second conductivity type semiconductor layer, respectively, an area of the first light emission region is larger than an area of the second emission region, and at least one of the first emission region or the second emission region emits light of a plurality of peak wavelengths.

A light emitting device including a first light emitting part, a second light emitting part disposed on a first surface of the first light emitting part, and a third light emitting part disposed on a first surface of the second light emitting part, a first contact member contacting a surface of a second n-type semiconductor layer of the second light emitting part, an ohmic electrode electrically connected to a third p-type semiconductor layer of the third light emitting part, and an adhesive layer disposed between the second light emitting part and the third light emitting part, in which the first contact member extends toward the first light emitting part to be electrically connected to a first n-type semiconductor layer of the first light emitting part, and the adhesive layer extends toward the ohmic electrode.

A display device comprises a plurality of singulated dies attached to a backplane. Each singulated die comprises a plurality of LEDs. A method of forming the display device comprises attaching the plurality of singulated dies to the backplane.

An electronic device includes a pixel defining film defining a plurality of emission areas and a non-emission area, a plurality of light emitting elements which are disposed in the emission areas, respectively, and emit source light, and an optical layer disposed on the light emitting elements. The light emitting elements each include a first electrode, a first emission layer generating first light of a blue color, a second emission layer generating second light of a green color, a third emission layer generating third light of the blue color, a fourth emission layer generating fourth light of the blue color, a charge generation layer, and a second electrode. The pixel defining film includes a pigment having a black color, and a distance between the first and second electrodes is less than a resonance distance of green light.

The present application provides a display panel and a method for manufacturing the same. The display panel includes: a driving substrate including a first voltage line and a second voltage line; a plurality of stacked light-emitting unit modules arranged at intervals and arranged on a side of the driving substrate, each of the plurality of stacked light-emitting unit modules including a first light-emitting unit and a second light-emitting unit stacked and correspondingly arranged, where the first light-emitting unit includes a first light-emitting element, a first connection electrode, and a second connection electrode, the first connection electrode and the second connection electrode are arranged at intervals, the first connection electrode and the second connection electrode correspond one-to-one with the first voltage line and the second voltage line but are not all electrically connected.

The present invention relates to a vertically stacked microdisplay panel without a color filter which includes a back wafer having a plurality of complementary metal-oxide semiconductor (CMOS) electrode pads aligned on an upper surface, and a plurality of light-emitting diode (LED) stacks each including a plurality of light-emitting portions and a plurality of bonding layers stacked in a vertical direction, and respectively aligned on the plurality of CMOS electrode pads, wherein each of the plurality of LED stacks includes a first light-emitting portion disposed on the CMOS electrode pad and configured to emit a first color, a second light-emitting portion disposed on the first light-emitting portion and configured to emit a second color, and a third light-emitting portion disposed on the second light-emitting portion and configured to emit a third color, each of the plurality of LED stacks emits only a specific color by forming a short passage in at least one of the first light-emitting portion, the second light-emitting portion, and the third light-emitting portion so that a current flows through the light-emitting portion in which the short passage is not formed. According to the present invention, there is an effect of selectively improving the brightness of colors lacking brightness and improving the overall color brightness by connecting light-emitting portions emitting the same color in series.

The present invention relates to a vertically stacked microdisplay panel, which includes a back wafer having an upper surface on which a plurality of complementary metal-oxide-semiconductor (CMOS) electrode pads are arranged, a plurality of light-emitting diode (LED) stacks, each of which includes a plurality of light-emitting units and a plurality of bonding layers that are stacked in a vertical direction and is arranged on one of a plurality of CMOS electrode pads, and a common electrode formed on the plurality of LED stacks, wherein each of the plurality of LED stacks, by forming a short path in at least one of the plurality of light-emitting units, allows a current to flow through the light-emitting unit in which the short path is not formed, and emits only a specific color, and the short path has a preset depth and a preset width.

According to the present invention, since a color filter is unnecessary despite the adoption of a vertically stacked tandem structure, the color quality of a microdisplay can be significantly improved, and process complexity and productivity can be significantly improved.