Alignment films include a copolymer of a specific vertical alignment monomer and at least one of a specific anthracene-based monomer and a specific benzyl-based monomer.

A display apparatus includes a liquid crystal panel, a light source configured to provide light to the liquid crystal panel, and an optical member disposed between the liquid crystal panel and the light source. The optical member includes a diffuser sheet that is configured to diffuse the light from the light source, and a deformation preventing layer including a first material having a lower expansion or contraction rate than the diffuser sheet.

A white light emitting device, including a circuit board; a plurality of light sources mounted on the circuit board, each light source of the plurality of light sources configured to emit monochromatic light; a light converter spaced apart from the circuit board, the light converter configured to convert the monochromatic light emitted from the light sources to white light; and a compensator provided between the circuit board and the light converter, the compensator configured to convert the emitted monochromatic light to white light.

A color conversion film is provided. The film includes at least one narrow band emission phosphor dispersed within a binder matrix, wherein the narrow band emission phosphor has a D50 particle size from about 0.1 μm to about 15 μm and is selected from the group consisting of a green-emitting U.sup.6+-containing phosphor, a green-emitting Mn.sup.2+-containing phosphor, a red-emitting phosphor based on complex fluoride materials activated by Mn.sup.4+, and a mixture thereof. A device is also provided.

The present disclosure provides a light emitting device including a substrate, a conductive layer, first and second reflective layers, a light emitting element, and an encapsulation layer. The conductive layer is disposed on the substrate. The first reflective layer covers the conductive layer and has an opening exposing a portion of the conductive layer. The light emitting element is disposed in the opening and electrically connects to the conductive layer. The second reflective layer is disposed on the first reflective layer and surrounds the light emitting element, and the second reflective layer has an outer diameter. The encapsulation layer covers the light emitting element. There is a height between a highest point of the encapsulation layer and an upper surface of the first reflective layer, and the height is 0.1 to 0.5 times the outer diameter. The present disclosure also provides a backlight and a display panel.

A backlight module and an electronic device are provided. The backlight module, having a main region and a peripheral region near the main region, includes a light conversion layer, multiple light conversion patterns located in the peripheral region, and multiple light emitting units emitting a light beam. A first portion and a second portion of the light beam emitted respectively from the main region and the peripheral region both have at least one corresponding position in a CIE 1931 color space. One among the at least one corresponding position of the first portion of the light beam has corresponding coordinates (x1, y1). One among the at least one corresponding position of the second portion of the light beam has corresponding coordinates (x2, y2). The corresponding coordinates (x1, y1) and the corresponding coordinates (x2, y2) satisfy the following relation: 0≤|x1−x2|≤0.2.

A light emitting diode device includes a substrate, a reflector cup on the substrate and defining cavity, a light-emitting chip on the substrate and in the cavity, fluorescent glue filling the cavity and covering the light-emitting chip, and a phosphor film on a side of the reflector cup away from the substrate. The light-emitting chip is surrounded by the reflector cup. The fluorescent glue includes fluorescent powder and transparent glue.

The present embodiment comprises: a plurality of light-emitting units; and a reflector including reflector units having spaces formed to receive the plurality of light-emitting units, respectively. Each of the plurality of light-emitting units includes an LED package mounted on a substrate and a light diffusion layer having a groove portion formed on a surface opposite to the substrate in the LED package, wherein the outer circumference of the light diffusion layer faces the inner surface of a reflector unit. In the reflector, the plurality of reflector units are integrally formed, the spaces expand along a direction extending away from the substrate, and a wall forming each of the spaces surrounds the outer circumference of each of the LED package and the light diffusion layer.

A display apparatus includes a liquid crystal panel; light sources configured to emit blue light; a reflective sheet including four edge portions and a first hole and a second hole on each of the four edge portions of the reflective sheet, the first hole disposed at a first distance from an edge of the reflective sheet, and the second hole disposed at a second distance from the edge of the reflective sheet, wherein the second distance is greater than the first distance; and first and second light conversion dots, wherein the first light conversion dots are disposed around the first hole of the reflective sheet, and the second light conversion dots are disposed around the second hole of the reflective sheet, wherein a size of each of the first light conversion dots is greater than a size of each of the second light conversion dots.

A display system and method are disclosed that includes an electronic display device and a backlight comprising a light-emitting array, a reflector adjacent to the light-emitting array, a diffuser opposite the reflector, a first brightness enhancing layer adjacent the diffuser, and an optical film in the backlight unit that includes at least one light conversion material or at least one light conversion material. The light conversion material is structured and configured to reduce hazardous blue light emissions between about 400 nm to about 500 nm. The disclosed display device can include a liquid crystal panel configured to control transmission of light from the backlight to a viewer. The display device also includes one or more optical films that incorporate one or more light conversion or light absorbing materials. The optical films can be positioned between the layers of the disclosed display device and give enhanced blue-light absorption to the display device.