A light emitting device is provided. The light emitting device includes a light emitting assembly having a first light emitting diode package structure and a second light emitting diode package structure. The light emitting assembly can generate a mixed light source having a spectral deviation index. The first light emitting diode package structure can generate a first light source having a first spectral deviation index. The second light emitting diode package structure can generate a second light source having a second spectral deviation index. When the first light source and the second light source are within a range from 460 to 500 nm, a sum of the first spectral deviation index and the second spectral deviation index is within a range from −0.3 to 0.3, and a difference between the first spectral deviation index and the second spectral deviation index is at least greater than 0.2.

A light emitting device is provided. The light emitting device includes a light emitting assembly having a first light emitting diode package structure and a second light emitting diode package structure. The light emitting assembly can generate a mixed light source having a spectral deviation index. The first light emitting diode package structure can generate a first light source having a first spectral deviation index. The second light emitting diode package structure can generate a second light source having a second spectral deviation index. When the first light source and the second light source are within a range from 460 to 500 nm, a sum of the first spectral deviation index and the second spectral deviation index is within a range from −0.3 to 0.3, and a difference between the first spectral deviation index and the second spectral deviation index is at least greater than 0.2.

The present embodiment comprises: a plurality of light-emitting units; and a reflector including reflector units having spaces formed to receive the plurality of light-emitting units, respectively. Each of the plurality of light-emitting units includes an LED package mounted on a substrate and a light diffusion layer having a groove portion formed on a surface opposite to the substrate in the LED package, wherein the outer circumference of the light diffusion layer faces the inner surface of a reflector unit. In the reflector, the plurality of reflector units are integrally formed, the spaces expand along a direction extending away from the substrate, and a wall forming each of the spaces surrounds the outer circumference of each of the LED package and the light diffusion layer.

The present embodiment comprises: a plurality of light-emitting units; and a reflector including reflector units having spaces formed to receive the plurality of light-emitting units, respectively. Each of the plurality of light-emitting units includes an LED package mounted on a substrate and a light diffusion layer having a groove portion formed on a surface opposite to the substrate in the LED package, wherein the outer circumference of the light diffusion layer faces the inner surface of a reflector unit. In the reflector, the plurality of reflector units are integrally formed, the spaces expand along a direction extending away from the substrate, and a wall forming each of the spaces surrounds the outer circumference of each of the LED package and the light diffusion layer.

A light emitting device including a blue light emitting portion configured to emit blue light, a green light emitting portion configured to emit green light, a red light emitting portion configured to emit red light, in which the blue light emitting portion include a first near-UV light emitting diode chip and a first wavelength conversion portion for wavelength conversion of near-UV light emitted from the first near-UV light emitting diode chip, blue light emitted from the blue light emitting portion includes a first peak wavelength in a wavelength band corresponding to near-UV light and a second peak wavelength in a wavelength band corresponding to blue light, and an intensity of the first peak wavelength is in a range of 0% to 20% of intensity of the second peak wavelength.

A light emitting device including a blue light emitting portion configured to emit blue light, a green light emitting portion configured to emit green light, a red light emitting portion configured to emit red light, in which the blue light emitting portion include a first near-UV light emitting diode chip and a first wavelength conversion portion for wavelength conversion of near-UV light emitted from the first near-UV light emitting diode chip, blue light emitted from the blue light emitting portion includes a first peak wavelength in a wavelength band corresponding to near-UV light and a second peak wavelength in a wavelength band corresponding to blue light, and an intensity of the first peak wavelength is in a range of 0% to 20% of intensity of the second peak wavelength.

Provided are an LED display pixel structure, an LED display module, and an LED display screen. The LED display pixel structure includes an LED pixel unit (1) and a layered extraction structure arranged above the LED pixel unit (1). The layered extraction structure is configured to receive light from the LED pixel unit (1) and emit the light. The LED display pixel structure includes a first retardation film layer (31), a linear polarizer (32), and a second retardation film layer (33), which are sequentially stacked. The light emitted by the LED pixel unit (1) sequentially passes through the first retardation film layer (31), the linear polarizer (32), and the second retardation film layer (33). The first retardation film layer (31) and the second retardation film layer (33) are quarter-wave plates.

Provided are an LED display pixel structure, an LED display module, and an LED display screen. The LED display pixel structure includes an LED pixel unit (1) and a layered extraction structure arranged above the LED pixel unit (1). The layered extraction structure is configured to receive light from the LED pixel unit (1) and emit the light. The LED display pixel structure includes a first retardation film layer (31), a linear polarizer (32), and a second retardation film layer (33), which are sequentially stacked. The light emitted by the LED pixel unit (1) sequentially passes through the first retardation film layer (31), the linear polarizer (32), and the second retardation film layer (33). The first retardation film layer (31) and the second retardation film layer (33) are quarter-wave plates.

A light emitting device includes a substrate including first, second, third and fourth wiring portions on a top surface of a base member and arrayed in a first direction, and a connection wiring portion connecting the second and third wiring portions. The connection wiring portion includes first and second connection ends respectively connected with the second and third wiring portions, and a connection central portion connecting the first and second connection ends and having a maximum width in a second direction different from each of a maximum width of the first connection end and a maximum width of the second connection end. In the second direction, at least a part of the connection wiring portion has a width narrower than each of a maximum width of the second wiring portion and a maximum width of the third wiring portion.

A light emitting device includes a substrate including first, second, third and fourth wiring portions on a top surface of a base member and arrayed in a first direction, and a connection wiring portion connecting the second and third wiring portions. The connection wiring portion includes first and second connection ends respectively connected with the second and third wiring portions, and a connection central portion connecting the first and second connection ends and having a maximum width in a second direction different from each of a maximum width of the first connection end and a maximum width of the second connection end. In the second direction, at least a part of the connection wiring portion has a width narrower than each of a maximum width of the second wiring portion and a maximum width of the third wiring portion.