Light-emitting device, display unit and lighting unit

A display unit comprising:

• a liquid crystal display;
• and
• a light-emitting device arranged at the back side of the liquid crystal display so as to serve as a backlight, the light-emitting device including:
• a light source body generating light;
• and
• a plurality of resonant layers, each resonating the light with a predetermined wavelength, each of the wavelengths of the light resonated by the resonant layers being different from at least one of the other wavelengths of the light resonated by the resonant layers.

A lighting unit comprising:

• a light-emitting device as a light source including:
• a light source body generating light;
• and
• a plurality of resonant layers, each resonating light with a predetermined wavelength, each of the wavelengths of the light resonated by the resonant layers being different from at least one of the other wavelengths of the light resonated by the resonant layers.

A light-emitting device comprising:

• a light source body generating light;
• a first reflector partially reflecting the light, the first reflector with a reflecting surface being arranged at a first side through which the light is output;
• a second reflector partially reflecting the light, the second reflector with a first reflecting surface and a second reflecting surface being arranged adjacent to the first reflector at a second side opposite to the first side, the reflecting surface of the first reflector facing the first reflecting surface of the second reflector;
• and
• a third reflector partially reflecting the light, the third reflector with a reflecting surface being arranged adjacent to the second reflector at the second side, the reflecting surface of the third reflector facing the second reflecting surface of the second reflector, the first, second and third reflectors being formed so as to satisfy the following equations:
• t1=(n1×λ1)/2 t2=(n2×λ2)/2 t1+t2=(n3×λ3)/2
• wherein t1 denotes the distance between the reflecting surface of the first reflector and the first reflecting surface of the second reflector, t2 denoting the distance between the second reflecting surface of the second reflector and the reflecting surface of the third reflector, λ1 denoting a wavelength of a first resonated light, λ2 denoting a wavelength of a second resonated light, λ3 denoting a wavelength of a third resonated light, n1, n2 and n3 being natural numbers.

A light-emitting device comprising:

• a light source body generating light;
• and
• a plurality of reflectors partially reflecting the light, the plurality of reflectors being arranged in a direction in which the plurality of reflectors overlaps, the plurality of reflectors resonating light having wavelengths λ1, λ2 and λ3, the light-emitting source being formed so as to satisfy the following equations:
• t1=(m1×λ1)/2 t2=(m2×λ2)/2 t3=(m3×λ3)/2
• wherein t1 denotes the distance between the reflectors that resonate the light having the wavelength λ1, t2 denoting the distance between the reflectors that resonate the light having the wavelength λ2, t3 denoting the distance between the reflectors that resonate the light having the wavelength λ3.