A light emitting element including a housing having a cavity and an inner wall, a light emitting part disposed in the cavity to emit light having a peak wavelength in a blue wavelength band and including first and second light emitting chips spaced apart from each other, a lead portion to supply external electric power, and a wavelength converter including a first phosphor layer including a first phosphor to emit light having a peak wavelength in a green wavelength band, and a second phosphor layer including a second phosphor to emit light having a peak wavelength in a red wavelength band, in which the second phosphor includes at least one of a nitride-based red phosphor and a fluoride-based red phosphor represented by A.sub.2MF.sub.6:Mn.sup.4+, A is one of Li, Na, K, Ba, Rb, Cs, Mg, Ca, Se, and Zn, and M is one of Ti, Si, Zr, Sn, and Ge.

A color conversion panel includes a first color conversion layer, a second color conversion layer, and a light wavelength conversion layer. The first color conversion layer includes a first semiconductor nanocrystal set for providing red light. The second color conversion layer neighbors the first color conversion layer and includes a second semiconductor nanocrystal set for providing first green light. The light wavelength conversion layer neighbors the second light conversion layer, may provide blue light, and includes a third semiconductor nanocrystal set for providing second green light.

An optoelectronic component may include a radiation-emitting semiconductor chip configured to emit electromagnetic radiation and a phosphor mixture. The excitation spectrum may have a peak wavelength ranging from 435 nm to 460 nm. The phosphor mixture may have three phosphors configured to emit electromagnetic radiation in different spectral ranges.

A displaying apparatus includes a pixel unit. The pixel unit includes at least one pixel having a light emitting device and a light conversion layer for converting a first wavelength of light of the light emitting device into a second wavelength of light different from the first wavelength; and an insulation layer covers side surfaces of the light emitting device and the light conversion layer.

A light emitting diode (LED) pixel for a display including a first LED stack, a second LED stack disposed on a partial region of the first LED stack, a third LED stack disposed on a partial region of the second LED stack, a first ohmic electrode disposed on the first LED stack and forming ohmic contact with the first LED stack, a second transparent electrode disposed between the second LED stack and the third LED stack and in ohmic contact with an upper surface of the second LED stack, and a third transparent electrode in ohmic contact with an upper surface of the third LED stack, in which the first ohmic electrode is laterally spaced apart from the second LED stack.

A novel functional panel that is highly convenient or reliable is provided. The functional panel includes a light-emitting region including a first element, a first functional layer, and a second functional layer. The first element includes a first electrode, a second electrode, and a layer containing a light-emitting material. The layer containing a light-emitting material contains gallium nitride. The first functional layer includes a region positioned between the light-emitting region and the second functional layer, and includes a first insulating film. The first insulating film includes a first opening and a second opening on the outside of the light-emitting region. The second functional layer includes a driver circuit. The driver circuit includes a first transistor and a second transistor. The first transistor is electrically connected to the first electrode through the first opening, and the second transistor is electrically connected to the second electrode through the second opening.

The present invention relates to a device and method for detecting light allowing retrieval of a physiological parameter of a user carrying said device. To improve the efficiency of light capturing, the device (1, 2, 3, 4) comprises a light source (10) arranged for emitting light of at least a first wavelength into tissue of the subject, a wavelength converter (20) arranged for receiving at least part of the emitted light after interaction of the emitted light with the tissue and for converting the received light into at least a second wavelength different from the first wavelength, and a light sensor (30) arranged for receiving light converted by said wavelength converter.

A full spectrum light emitting device includes photoluminescence materials which generate light with a peak emission wavelength in a range 490 nm to 680 nm (green to red) and a broadband solid-state excitation source operable to generate broadband blue excitation light with a dominant wavelength in a range from 420 nm to 470 nm, where the broadband blue excitation light includes at least two different blue light emissions in a wavelength range 420 nm to 480 nm.

A compound of the general formula (I): A.sub.3BF.sub.2M.sub.1−xT.sub.xO.sub.2−2xF.sub.4+2x doped with Mn(IV), in which A is selected from the group consisting of Li, Na, K, Rb, Cs, Cu, Ag, Tl, NH4, NR4 and mixtures of two or more thereof, where R is an alkyl or aryl group, B is selected from the group consisting of H and D and mixtures thereof, where D is Deuterium, M is selected from the group consisting of Cr, Mo, W, Te, Re and mixtures of two or more thereof, T is selected from the group consisting of Si, Ge, Sn, Ti, Pb, Ce, Zr, Hf and mixtures of two or more thereof, and 0≤x≤1.

A backlight module includes a substrate, a light blocking unit, and a plurality of light-emitting chips. The light blocking unit is disposed on the substrate, and includes a carbon black, a scattering particle and a resin. The scattering particle is one of titanium dioxide, silicon dioxide, barium sulfate, and combinations thereof. The light blocking unit cooperates with the substrate to form a plurality of spaced-apart wells. The light-emitting chips are disposed in the wells, respectively, to permit optical units to be disposed thereon. A display device including the backlight module, and a method for making the display device are also provided herein.