The present invention provides a backlight unit capable of realizing a wide color gamut of a display device by reduction of the spectral half-width of light. The backlight unit provided by the present invention comprises: a light source which is formed so as to provide primary light; a quantum dot phosphor which is excited by the primary light provided from the light source and emits secondary light having a wavelength different from the wavelength of the primary light, the quantum dot phosphor being arranged so as to be spaced apart from the light source; and a light cutting agent which absorbs light of a specific wavelength from the primary light or the secondary light.

A backlight for providing uniform illumination to a display panel includes a plurality of discrete light sources. A multilayer polymeric partial reflector is disposed on the plurality of discrete light sources. For substantially normally incident light the partial reflector includes a reflection band includes a blue wavelength, a reflectance greater than about 80% at the blue wavelength, a left band edge between about 370 nm to about 420 nm, a right band edge between about 500 nm and 600 nm, and an average transmission between about 20% to about 80% for visible wavelengths greater than the right band edge. A reflective polarizer is disposed on the partial reflector. For substantially normally incident light having the blue wavelength, the reflective polarizer reflects at least 60% of the light having the first polarization state and transmits at least 60% of the light having the second polarization state.

A display device is provided and a display unit of the display device includes a light emitting unit and a light converting layer disposed on the light emitting unit. The display unit emits an output light under an operation of the highest gray level, the output light having an output spectrum. An intensity integral of the output spectrum from 380 nm to 493 nm defines as a first intensity integral, an intensity integral of the output spectrum from 494 nm to 580 nm defines as a second intensity integral, a ratio of the first intensity integral over the second intensity integral defines as a first ratio, and the first ratio ranges from 5 to 20.

The invention described in the present specification relates to a color conversion film including a resin matrix; and an organic fluorescent substance dispersed in the resin matrix, and absorbing blue or green light and emitting light having a wavelength different from the absorbing light, wherein the resin matrix includes a thermoplastic resin, and the color conversion film has a light emission peak with a FWHM of 60 nm or less, quantum efficiency of 80% or greater and an absorption coefficient of 30,000 M.sup.−1cm.sup.−1 or greater at a maximum absorption wavelength when irradiating light having a light emission peak at 450 nm, a FWHM of 40 nm or less and monomodal light emission intensity distribution, a method for preparing the same, and a backlight unit including the color conversion film.

The present invention provides a backlight module, a liquid crystal display device and a backlight adjustment method thereof; the backlight module comprises a light guide plate and a LED light bar located at an incident side of the light guide plate, and the LED light bar comprises a driving chip, LED lamps of at least two different color temperatures, which are alternately aligned, and the LED lamps of the same color temperature are coupled in series to construct a route, and each route is coupled to an adjustable resistance in series, and the routes constructed by the LED lamps after parallel connection are all coupled to the driving chip to construct a driving circuit, and the backlight module further comprises a control module, and the control module is coupled to the driving circuit.

A system is disclosed for correcting a color of light being generated by an LCD image system having an LED and an LCD glass component that is illuminated by the LED. A plurality of color correction filters are constructed, with each providing a predetermined, differing color shift to light being output by the LCD glass component, based on a measured color of the light being output from the LCD glass component. Each of the color correction filters is constructed based on a known range of color variations that may be present in a color of the light being output from the LCD glass component. Each filter provides a color shift that shifts the color of the light being output from the LCD glass component from outside a predetermined target color area back into the predetermined target color area.

A liquid crystal display apparatus includes a backlight configured to emit red light, green light, and blue light for forming an image, a liquid crystal panel including a plurality of pixels through which light components supplied by the backlight respectively pass, configured to control transmittances of the plurality of pixels to form an image, and a backlight controller configured to control respective intensities of the red light, the green light, and the blue light emitted by the backlight. The backlight controller is configured to compensate for a black color coordinate value generated with respect to a predetermined color by controlling the backlight such that a second red light intensity and a second green light intensity are larger than a first red light intensity and a first green light intensity and a second blue light intensity are smaller than a first blue light intensity. A black color coordinate value may be made correspond to a white color coordinate value.

Provided is a liquid crystal display device that has excellent visibility while using a protective film comprising a polyester film. The liquid crystal display device comprises a backlight light source, and a liquid crystal cell disposed between two polarizers; the backlight light source being a white light-emitting diode; each of the polarizers comprising a polarizing film and protective films laminated on both sides of the polarizing film; and at least one of the protective films being a polyester film having a retardation of 3,000 to 30,000 nm.

The present disclosure discloses a display apparatus, a backlight source, and a light source module. The display apparatus includes a display panel and interference light sources which generate interference light on a display side of the display panel. The interference light is invisible light.

The invention described in the present specification relates to a backlight unit including a light source including a light emission lamp emitting light including a 450 nm wavelength, and an inorganic fluorescent substance provided at least a part of inside or on a surface of the lamp and having a maximum light emission wavelength in a 510 nm to 560 nm range when irradiating light including a 450 nm wavelength; and a color conversion film including an organic fluorescent substance, and having a maximum light emission wavelength in a 610 nm to 660 nm range when irradiating light emitted from the light emission lamp or the inorganic fluorescent substance, and a display apparatus including the same.