A display device includes a light emitting unit and a display panel including a first color filter. The light emitting unit includes a light source generating a blue light, and a light-converting part converting the blue light into a white light and emitting the white light to an exterior. The first color filter, through which the white light passes, includes a first coloring agent that absorbs about 95% to about 100% of light having wavelength of about 420 nm to about 470 nm in the white light. Thus, a color reproducibility of the display device may be improved.
1. A display device comprising:
a light emitting unit including a light source and a light-converting part, the light source generating a blue light, the light-converting part converting a portion of the blue light into red light, another portion of the blue light into green light, and emitting a mixture of a remaining blue light, the red light and the green light from the light-converting party to an exterior of the light emitting unit to be perceived as a white light by an observer, and the remaining blue light having a wavelength in the range of 420 nm to 470 nm; and
a display panel including a first substrate, a second substrate and a liquid crystal between the first and second substrates, the display panel receiving the white light including the remaining blue light, at least one of the first and second substrate including a first color filter and a second color filter, the first color filter including a first coloring agent that has a maximum light transmittance in a first wavelength range of about 580 nm to about 750 nm and absorbs about 95% to about 100% of the remaining blue light having wavelengths of about 420 nm to about 470 nm, and the second color filter including a second coloring agent that has a maximum light transmittance in a second wavelength range of about 500 nm to about 550 nm and absorbs about 95% to 100% of the remaining blue light having wavelengths of about 420 nm to about 470 nm.
2. The display device of claim 1 , wherein the first coloring agent includes a compound represented by the following Chemical Formula 1, wherein R 1 , R 2 , R 3 and R 4 independently represent a hydrogen atom, a hydroxyl group, an alkyl group having 1 to 30 carbon atoms, an alkenyl group having 2 to 30 carbon atoms, an oxyalkyl group having 1 to 30 carbon atoms, a cycloalkyl group having 3 to 30 carbon atoms, an aryl group having 6 to 30 carbon atoms, or a derivative or a polymer thereof, and M represents chromium (Cr), aluminum (Al), gallium (Ga) or indium (In)
3. The display device of claim 2 , wherein the display panel further includes a second color filter including a second coloring agent that absorbs about 95% to about 100% of light having wavelengths of about 420 nm to about 470 nm in the white light, the second coloring agent including a compound represented by the following Chemical Formula 2, wherein R 5 and R 6 independently represent a hydrogen atom, a hydroxyl group, an alkyl group having 1 to 30 carbon atoms, an alkenyl group having 2 to 30 carbon atoms, an oxyalkyl group having 1 to 30 carbon atoms, a cycloalkyl group having 3 to 30 carbon atoms of 3 to 30, an aryl group having 6 to 30 carbon atoms, or a derivative or a polymer thereof
4. The display device of claim 1 , wherein the first color filter includes at least one selected from the group consisting of compounds represented by the following Chemical Formulas 3, 4 and 5
5. The display device of claim 4 , wherein the first color filter further includes at least one selected from the group consisting of compounds represented by the following Chemical Formulas 6, 7, 8, 9, 10 and 11
6. The display device of claim 1 , wherein the first coloring agent includes a compound represented by the following Chemical Formula 2, wherein R 5 and R 6 independently represent a hydrogen atom, a hydroxyl group, an alkyl group having 1 to 30 carbon atoms, an alkenyl group having 2 to 30 carbon atoms, an oxyalkyl group having 1 to 30 carbon atoms, a cycloalkyl group having 3 to 30 carbon atoms, an aryl group having 6 to 30 carbon atoms, or a derivative or a polymer thereof
7. The display device of claim 1 , wherein the first color filter includes at least one selected from the group consisting of compounds represented by the following Chemical Formulas 12, 13 and 14
8. The display device of claim 7 , wherein the first color filter further includes at least one selected from the group consisting of compounds represented by the following Chemical Formulas 6, 7, 8, 9, 10 and 11
9. The display device of claim 1 , wherein the light source includes gallium nitride (GaN) and indium gallium nitride (InGaN), and the light-converting part includes a fluorescent material.