Display device and television reception device
AssigneeSharp Kabushiki Kaisha
InventorMasashi Yokota
Life of this patent
Estimating the term…
Abstract
A liquid crystal display device includes an LED that emits blue light having a light emission spectrum with a half value width less than 25 nm, green light having a light emission spectrum with a half value width less than 52 nm, and red light having a light emission spectrum with a half value width less than 40 nm, and a color filter including a blue coloring unit having a transmission spectrum with a peak wavelength from 440 nm to 461.5 nm and a half value width less than 100 nm, a green coloring unit having a transmission spectrum with a peak wavelength from 510 nm to 533.5 nm and a half value width less than 90 nm, and a red coloring unit having a transmission spectrum with a wavelength greater than or equal to 580 nm for the half value of a peak.
Claims14
A display device comprising:
- an illumination device that includes an illuminant emitting blue light having a light emission spectrum which includes a peak having a peak wavelength in a range of 440 nm±2 nm to 450 nm±2 nm and has a half value width of less than 25 nm for the peak, green light having a light emission spectrum which includes a peak having a peak wavelength in a range of 525 nm±2 nm to 540 nm±2 nm and has a half value width of less than 52 nm for the peak, and red light having a light emission spectrum which includes a peak having a peak wavelength in a range of 620 nm±2 nm to 645 nm±2 nm and has a half value width of less than 40 nm for the peak;
- and
- a display panel that includes a color filter and performs display by using light from the illumination device, the color filter including at least a blue coloring unit that exhibits blue and has a transmission spectrum which includes a peak having a peak wavelength in a range of 440 nm to 461.5 nm and has a half value width of less than 100 nm for the peak, a green coloring unit that exhibits green and has a transmission spectrum which includes a peak having a peak wavelength in a range of 510 nm to 533.5 nm and has a half value width of less than 90 nm for the peak, and a red coloring unit that exhibits red and has a transmission spectrum which has a wavelength of greater than or equal to 580 nm for the half value of a peak, wherein
- the illuminant includes at least a blue light emitting element that emits the blue light, a green phosphor that is excited by the blue light from the blue light emitting element and emits green light, and a red phosphor that is excited by the blue light from the blue light emitting element and emits red light.
Dependencies are inferred from the claim text.