18534682. LIGHT EMITTING DEVICE AND PROJECTOR simplified abstract (SEIKO EPSON CORPORATION)

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LIGHT EMITTING DEVICE AND PROJECTOR

Organization Name

SEIKO EPSON CORPORATION

Inventor(s)

Masamitsu Mochizuki of CHINO-SHI (JP)

LIGHT EMITTING DEVICE AND PROJECTOR - A simplified explanation of the abstract

This abstract first appeared for US patent application 18534682 titled 'LIGHT EMITTING DEVICE AND PROJECTOR

The patent application describes a light emitting device that includes a photonic crystal layer designed to control the direction of emitted light.

  • The device consists of a first semiconductor layer, a second semiconductor layer, and a light emitting layer sandwiched between them.
  • A photonic crystal layer is placed on the side of the second semiconductor layer opposite to the light emitting layer.
  • The photonic crystal layer has a first region with a photonic crystal that resonates light in a specific direction and a second region with a different photonic crystal that emits light in another direction.
  • The first photonic crystal ensures light resonates orthogonally to the layers, while the second photonic crystal emits light in a different direction.

Potential Applications:

  • LED lighting
  • Display technology
  • Optical communication systems

Problems Solved:

  • Controlling the direction of emitted light
  • Enhancing light emission efficiency

Benefits:

  • Improved light emission control
  • Increased efficiency in light output

Commercial Applications:

  • LED lighting for commercial and residential use
  • Display panels for electronic devices
  • Optical communication equipment for data transmission

Questions about the technology: 1. How does the photonic crystal layer impact the efficiency of light emission? 2. What are the potential challenges in integrating this technology into existing lighting systems?


Original Abstract Submitted

A light emitting device including a first semiconductor layer, a second semiconductor layer, a light emitting layer disposed between the first semiconductor layer and the second semiconductor layer, and a photonic crystal layer disposed on a side of the second semiconductor layer opposite to the light emitting layer is provided. The photonic crystal layer includes a first region provided with a first photonic crystal that causes light emitted by the light emitting layer to resonate in a direction orthogonal to a laminating direction of the first semiconductor layer and the light emitting layer and does not cause the light to be emitted in a direction different from the orthogonal direction, and a second region provided with a second photonic crystal that does not overlap the first region when viewed in the laminating direction and causes the light to be emitted in a direction different from the orthogonal direction.