摘要:
Light-emitting devices (e.g., LEDs) and methods associated with such devices are provided. In some embodiments, the device includes a distribution of light-generating portions (including active regions) that are spatially localized and separated (e.g., horizontally or vertically) from one or more patterned light extraction portions. This arrangement can allow light generated by the device to propagate and pass through regions of low absorption (e.g., light-extraction portions) rather than in regions of high absorption (e.g., light-generating portions), which can enhance light emission.
摘要:
Light-emitting devices (e.g., LEDs) and methods associated with such devices are provided. In some embodiments, the device includes a distribution of light-generating portions (including active regions) that are spatially localized and separated (e.g., horizontally or vertically) from one or more patterned light extraction portions. This arrangement can allow light generated by the device to propagate and pass through regions of low absorption (e.g., light-extraction portions) rather than in regions of high absorption (e.g., light-generating portions), which can enhance light emission. In some instances, the devices include one or more series of light extraction portions with features arranged in a first and/or second pattern, which may be formed on one or more interfaces of the device (e.g., an emission surface). Patterns can be defined by a series of features (e.g., holes) having certain characteristics (e.g., feature size, depth, nearest neighbor distances) which may be controlled to influence properties of the light emitted from the device, including improving extraction and/or collimation of the emitted light.
摘要:
Devices, such as light-emitting devices (e.g., LEDs), and methods associated with such devices are provided. A light-emitting device may include an interface through which emitted light passes therethrough. The interface having a dielectric function that varies spatially according to a pattern, wherein the pattern is arranged to provide light emission that has a substantially isotropic emission pattern and is more collimated than a Lambertian distribution of light.
摘要:
Light-emitting devices and/or systems are described. In one embodiment, a light-emitting device comprises a light-emitting material stack including a light-generating region and a light emission surface, and a polarizer configured to receive at least some light emitted from the light emission surface of the light-emitting material stack, wherein the polarizer comprises first reflective regions at a first height and second reflective regions separated from the first metal regions and at a second height different from the first height.
摘要:
Light-emitting devices are described herein. Some embodiments relate to light-emitting diodes with light-emitting sections that are independently electrically addressable. The devices may be used in a variety of applications including illumination and general lighting.