Wide color gamut light-emitting element

A light emitting element comprising:

• a housing including a plurality of walls defining a cavity having one side thereof opened;
• a light emitting part disposed in the cavity and configured to emit light having a peak wavelength in a blue wavelength band, the light emitting part including a first light emitting diode chip and a second light emitting diode chip spaced apart from each other;
• a lead portion formed in the housing and configured to supply external electric power to the light emitting part;
• and
• a wavelength converter disposed on the light emitting part and including a first phosphor layer having a first thickness and a second phosphor layer having a second thickness greater than the first thickness and directly contacting each other, the first phosphor layer includes a first phosphor mixed in the first phosphor layer and is configured to emit light having a peak wavelength in a green wavelength band, and the second phosphor layer includes a second phosphor and is configured to emit light having a peak wavelength in a red wavelength band,
• wherein:
• the first thickness and the second thickness are each measured from a top surface of the light emitting part in a direction normal to the top surface of the light emitting part;
• the second phosphor comprises a fluoride-based red phosphor;
• and
• at least one of the plurality of walls extends vertically with respect to a bottom surface of the housing.