Directional Control of Light Emitted from Micro-LEDs

MicroLED pixel configuration and display panel design to avoid dispersion and color inconsistency problems in small angle microLED displays. Multiple microLEDs of different colors are arranged on a circular arc with a common center point. The microLEDs emit light towards an optical component that collects and emits the light at a preset angle. The microLEDs are positioned so their light beams coincide after rotating around the center point. This ensures the emitted light from all microLEDs enters and exits the optical component at the same angle, preventing dispersion and color variation when using optical components to narrow the viewing angle.

Micro-LED structure for augmented reality and virtual reality displays that have improved light patterns. The micro-LED structure includes micro-LED chips with optical structures like lenses and reflective cups over each chip. The optical structures shape and direct the light emitted from the micro-LEDs for better performance in AR/VR displays.

Semiconductor-based waveguides are used as secondary optics for micro-LEDs to decrease beam divergence and collimate light for better control and efficiency. The waveguides are designed to decrease the divergence of the emitted light for applications like displays that require collimated light.

Micro-LEDs are designed to improve the collimation of emitted light while maintaining satisfactory extraction efficiency. The design involves using a truncated near-parabolic mesa with a low aspect ratio, an offset light-emitting source, and a polished primary emission surface. This allows the internal reflection of angled rays to enhance collimation.

Micro-LEDs with improved collimation of light output on the microscale. The micro-LEDs have a parabolic mesa structure with a low aspect ratio and a polished reflective surface. The parabolic shape and polished surface allow the collimation of light emitted from the LED to be improved compared to conventional LEDs.

A micro-LED design with photonic crystal columns extending through the transparent semiconductor layer enhances the directionality of emitted light. The photonic crystal columns inhibit light propagation in certain directions and act as waveguides to reduce light divergence. This improves extraction efficiency and reduces absorption and overheating in the micro-LED.

Micro-LED devices are designed to improve light output collimation without sacrificing significant extraction efficiency. The micro-LED structure includes a low aspect ratio parabolic mesa, offset light emitting source, and polished emission surface to reflect and collimate internal rays.

Micro-LED (μLED) devices with improved collimation of light output. The μLEDs have a near parabolic mesa structure with a low aspect ratio, a polished primary emission surface, and an offset light emitting source. These features allow parasitic rays to be reflected back into the device, improving collimation. The offset source and polished surface enhance this effect.