Display device
Disclosed is a display device. The display device includes: a display panel; an optical assembly which provides blue light to the display panel; and a diffusion plate which includes an absorption layer that is located between the display panel and the optical assembly, and absorbs light having a wavelength of certain range, in which, in a light provided to the display panel through the absorption layer, a radiant flux of green light series is 20% to 70%, and a radiant flux of red light series is 20% to 70%, based on a radiant flux of blue light series 100%, in which the diffusion plate includes: a core plate having light-transmitting properties; and a skin layer located on a lower surface of the core plate, in which the absorption layer is opposite to the skin layer with respect to the core plate.
1 . A display device comprising:
a display panel;
an optical assembly which provides blue-based light to the display panel; and
a diffusion plate which comprises an absorption layer that is located between the display panel and the optical assembly, and absorbs light having a wavelength of certain range,
wherein, in a light provided to the display panel through the absorption layer, an intensity of green-based light is 20% to 70% of an intensity (100%) of the blue-based light, and an intensity of red-based light is 20% to 70% of the intensity of the blue-based light,
wherein the diffusion plate comprises:
a core plate having light-transmitting properties; and
a skin layer located on a lower surface of the core plate,
wherein the absorption layer is opposite to the skin layer with respect to the core plate,
wherein the core plate comprises:
a diffusion particle located inside the core plate; and
a cavity formed inside the core plate,
wherein a thickness of the absorption layer is greater than a thickness of the skin layer, and
a thickness of the core plate is greater than the thickness of the absorption layer,
wherein the skin layer of the diffusion plate includes a pattern that is formed on an outer surface of the skin layer,
wherein the pattern is engraved or embossed on the outer surface of the skin layer,
wherein the pattern has a quadrangular pyramid shape,
a width of lower side of the pattern is 0.2 millimeters to 0.3 millimeters, and
a depth or height of the pattern is 0.2 millimeters to 0.4 millimeters.
2 . The display device of claim 1 , wherein the absorption layer comprises a green phosphor and a red phosphor,
wherein, in the light provided to the display panel through the absorption layer, the intensity of green-based light is 35% to 40% of the intensity of the blue-based light, and the intensity of red-based light is 21% to 28% of the intensity of the blue-based light.
3 . The display device of claim 1 , wherein a size of the cavity is greater than a size of the diffusion particle.
4 . The display device of claim 1 , wherein the absorption layer is adhered to an upper surface of the core plate, and
the skin layer is adhered to a lower surface of the core plate.
5 . The display device of claim 1 , wherein a peak of a wavelength of the blue-based light is 443 nm to 450 nm,
a peak of a wavelength of the red-based light is 610 nm to 630 nm, and
a peak of a wavelength of the green-based light is 535 nm to 545 nm, and a full width at half maximum of the green-based light is 35 nm to 45 nm.
6 . The display device of claim 1 , wherein a color temperature of an image provided from a front surface of the display panel is 10,000 K to 12,000 K.