Display device
Disclosed is a display device. The display device includes a display panel, an optical assembly configured to provide blue-based light to the display panel, and a light-absorbing layer located in the path of light provided from the optical assembly to the display panel, the light-absorbing layer being configured to absorb light in a predetermined wavelength range. The light provided to the display panel through the light-absorbing layer has optical characteristics such that the intensity of green-based light is 20 to 70% of the intensity (100%) of the blue-based light and the intensity of red-based light is 20 to 70% of the intensity of the blue-based light.
1. A display device comprising:
a display panel;
an optical assembly providing blue-based light to the display panel; and
a light-absorbing layer located in a path of light provided from the optical assembly to the display panel, the light-absorbing layer absorbing light in a predetermined wavelength range, and the light-absorbing layer includes a first light-absorbing layer located between the optical assembly and the display panel and a second light-absorbing layer located between the first light-absorbing layer and the display panel,
wherein the first light-absorbing layer includes a green phosphor and the second light-absorbing layer includes a red phosphor,
wherein a thickness of the first light-absorbing layer is at least 10 times thicker than a thickness of the second light-absorbing layer, and the first light-absorbing layer is adhered to the second light-absorbing layer, and
wherein light provided to the display panel through the light-absorbing layer has optical characteristics such that 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.
2. The display device according to claim 1 , wherein the light provided to the display panel through the light-absorbing layer has optical characteristics such that the intensity of the green-based light is 35 to 40% of the intensity of the blue-based light and the intensity of the red-based light is 21 to 28% of the intensity of the blue-based light.
3. The display device according to claim 1 , wherein the first light-absorbing layer comprises the green phosphor having a size of 3 to 7 micrometers, and
wherein the second light-absorbing layer comprises the red phosphor having a size of 1 micrometer or less.
4. The display device according to claim 1 , wherein the first light-absorbing layer is a film having a thickness of about 90 micrometers, and
wherein the second light-absorbing layer is a film having a thickness of about 3 micrometers.
5. The display device according to claim 4 , wherein a peak of a wavelength of the blue-based light is 443 to 450 nm,
wherein a peak of a wavelength of the green-based light is 530 to 550 nm, and
wherein a peak of a wavelength of the red-based light is 610 to 630 nm.
6. The display device according to claim 1 , wherein a peak of a wavelength of the green-based light is 535 to 545 nm, and a full width at half maximum of the green-based light is 35 to 45 nm.
7. The display device according to claim 1 , wherein a color temperature of an image provided from a front surface of the display panel is 10,000 to 12,000 K.