Abstract:
The present invention provides a phosphor with a preferred orientation represented by the following formula: A2[MF6]:Mn4+, wherein A is selected from a group consisting of Li, Na, K, Rb, Cs, and NH4, M is selected from a group consisting of Ge, Si, Sn, Ti, and Zr. The preferred orientation is a (001)/(011) preferred orientation. The present invention also provides a method for fabricating the above phosphor. The present invention further provides a light-emitting element package structure employing the same.
Abstract:
In the present disclosure embodiments, a phosphate phosphor including an activation center of trivalent chromium and a light emitting device are provided. The light emitting device includes a light source and the above mentioned phosphate phosphor, such that the phosphate phosphor is excited by the light source and emits a wide spectrum of the infrared light. The light emitting device with wide emission spectrum of the infrared light may be widely applied in detecting devices.
Abstract:
A picking apparatus is configured to pick up a plurality of micro elements. The picking apparatus includes an elastic plate, a substrate, a temperature-controlled adhesive layer, at least one heating element and a power source. The elastic plate has a first surface and a second surface opposite to each other. The substrate is disposed on the first surface. The temperature-controlled adhesive layer is disposed on the second surface and configured to adhere the micro elements. The heating element is disposed between the second surface and the temperature-controlled adhesive layer. The power source is electrically connected with the heating element. A viscosity of the temperature-controlled adhesive layer varies with a temperature of the temperature-controlled adhesive layer.
Abstract:
A low blue light backlight module configured to emit a white light is provided. The low blue light backlight module includes a first light-emitting element, a second light-emitting element, a third light-emitting element and a fourth light-emitting element. The first light-emitting element is configured to emit a first light having a peak emission wavelength of about 610-660 nm. The second light-emitting element is configured to emit a second light having a peak emission wavelength of about 520-550 nm. The third light-emitting element is configured to emit a third light having a peak emission wavelength of about 480-580 nm. The fourth light-emitting element is configured to emit a fourth light having a peak emission wavelength of about 445-470 nm. The white light has an emission spectrum, and an area ratio of the spectrum under wavelength of 415-455 nm to the spectrum under wavelength of 400-500 nm is below 50%.
Abstract:
A nitride phosphor, and a light emitting device and a backlight module employing the nitride phosphor. The nitride phosphor has the formula (Sr1-x, Bax)LiAl3N4-nOn:Eu3+y, Eu2+z with 0 0.1. The light emitting device includes a light emitting diode configured to emit a first light and the nitride phosphor configured to convert a portion of the first light to a second light. A backlight module includes a printed circuit board and a plurality of the light emitting devices.
Abstract:
The present disclosure provides a light emitting structure including a blue light source, a first fluorescent material layer and a second fluorescent material layer. The blue light source has a light emitting surface. The first fluorescent material layer covers the light emitting surface of the blue light source. The first fluorescent material layer consists of a first fluorescent material. An excitation band of the first fluorescent material is in a blue wave band, and an emission band of the first fluorescent material is in a green wave band. The second fluorescent material layer covers the first fluorescent material layer. The second fluorescent material layer consists of a second fluorescent material. An excitation band of the second fluorescent material is in a green wave band, and an emission band of the second fluorescent material is in a red wave band. A light device and a backlight module are also provided herein.
Abstract:
A light emitting diode (LED) package includes a light element, a light transferring layer disposed on the light element, a packaging layer enclosing the light transferring layer, a white wall surrounding the packaging layer and a diffusion film disposed on the packaging layer. The light transferring layer has a light outlet face, a light inlet face opposite to the light outlet face and a peripheral side. The light inlet face faces the light element. The white wall surrounds the peripheral side that is enclosed by the packaging layer.
Abstract:
The present disclosure provides a method for fabricating a phosphor. A first solution is formed by dissolving potassium hexafluorogermanate (K2GeF6) and either K2MnF6 or KMnO4 in a hydrofluoric acid solution. An anhydrous ethanol is added to the first solution to make a total concentration of fluoride ions of potassium hexafluorogermanate (K2GeF6), hydrofluoric acid, and either K2MnF6 or KMnO4 equal to or less than 48M to form a precipitate. Afterward, the precipitate is collected.
Abstract:
A wavelength-converting material and an application thereof are provided. The wavelength-converting material includes an all-inorganic perovskite quantum dot having a chemical formula of CsPb(ClaBr1-a-bIb)3, wherein 0≦a≦1, 0≦b≦1.
Abstract:
A quantum dot composite material and a manufacturing method and an application thereof are provided. The quantum dot composite material includes an all-inorganic perovskite quantum dot and a modification protection on a surface of the all-inorganic perovskite quantum dot. The all-inorganic perovskite quantum dot has a chemical formula of CsPb(ClaBr1-a-bIb)3, wherein 0≦a≦1, 0≦b≦1.