18571080. MICRO-LED WITH IMPROVED LIGHT EXTRACTION simplified abstract (Google LLC)
Contents
MICRO-LED WITH IMPROVED LIGHT EXTRACTION
Organization Name
Inventor(s)
Aurelien Jean Francois David of San Francisco CA (US)
MICRO-LED WITH IMPROVED LIGHT EXTRACTION - A simplified explanation of the abstract
This abstract first appeared for US patent application 18571080 titled 'MICRO-LED WITH IMPROVED LIGHT EXTRACTION
The abstract describes a micro light-emitting diode (micro-LED) designed to enhance light extraction. The micro-LED has a lateral dimension less than 20 micrometres and includes a light-emitting layer, an output facet, an optical interface (via a mirror) parallel to the light-emitting layer, and a non-vertical sidewall forming an angle with respect to a normal of the light-emitting layer. The light-emitting layer emits light consisting of a first light in a trajectory that escapes through the output facet without reflecting off the optical interface, and a second light in a trajectory that reflects off the optical interface and the non-vertical sidewall before escaping through the output facet. Additional features may include cavity effects, light guiding, total internal reflection at low-index layers, mirrors, and micro-optics.
- Light-emitting diode designed for increased light extraction
- Lateral dimension less than 20 micrometres
- Includes light-emitting layer, output facet, optical interface, and non-vertical sidewall
- Emits light in two trajectories, one escaping directly and the other reflecting off surfaces before escaping
- Additional features like cavity effects, light guiding, and total internal reflection
Potential Applications: - Display technology - Lighting applications - Wearable technology - Medical devices - Automotive lighting
Problems Solved: - Improved light extraction efficiency - Enhanced brightness and visibility - Miniaturization of lighting components
Benefits: - Higher efficiency in light emission - Improved visibility and brightness - Compact size for various applications - Enhanced performance in different lighting scenarios
Commercial Applications: Title: Enhanced Micro-LED Technology for Display and Lighting Applications Description: This technology can be utilized in various commercial sectors such as consumer electronics, automotive industry, healthcare, and more. The improved light extraction efficiency and compact size make it ideal for display panels, lighting fixtures, wearable devices, and medical equipment.
Questions about Micro-LED Technology: 1. How does the non-vertical sidewall angle contribute to the enhanced light extraction in micro-LEDs? 2. What are the specific advantages of using mirrors and micro-optics in micro-LED design?
Original Abstract Submitted
A micro light-emitting diode, micro-LED, is configured to provide increased light-extraction. The micro-LED () according to the present disclosure has a lateral dimension less than 20 micrometres and comprises: a light-emitting layer (), an output facet (), an optical interface (via a mirror ) parallel to the light-emitting layer, and a non-vertical sidewall () forming an angle with respect to a normal of the light-emitting layer. The layer () emits light () comprising a first light () in a first trajectory that escapes the micro-LED through the output facet () without reflecting off the optical interface and a second light () in a second trajectory that reflects off the optical interface and the non-vertical sidewall () and escapes through the output facet. The disclosed micro-LEDs may further include one or more of: cavity effects, light guiding, total internal reflection at low-index layers, mirrors, and micro-optics.
