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Related Experiment Video

Updated: Jul 19, 2026

Characterization of Anisotropic Leaky Mode Modulators for Holovideo

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Published on: March 19, 2016

Hybrid normal-reverse prism coupler for light-emitting diode backlight systems.

Shigeru Aoyama¹, Akihiro Funamoto, Koichi Imanaka

¹Advanced Device Laboratory, Corporate Research and Development Headquarters, Omron Corporation, Kyoto, Japan. shigeru.aoyama@omron.co.jp

|September 20, 2006

Summary

Researchers developed a hybrid prism coupler (HPC) for LED backlight systems. This innovation integrates light extraction and focusing, reducing system thickness by 40% and eliminating traditional optical components.

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Area of Science:

Optics and Photonics
Materials Science
Display Technology

Background:

Conventional LED backlight systems rely on separate prism and diffusive sheets for light management.
These components contribute significantly to the overall thickness and weight of display systems.
There is a need for integrated optical solutions to create thinner and lighter electronic devices.

Purpose of the Study:

To introduce a novel hybrid prism coupler (HPC) for LED backlight systems.
To demonstrate the dual functionality of light extraction and focusing within a single component.
To achieve a significant reduction in the thickness of LED backlight systems.

Main Methods:

Fabrication of a hybrid normal-reverse prism coupler on the bottom surface of a light guide.
Integration of the HPC into an LED backlight system architecture.
Comparative analysis of system thickness and optical performance against conventional designs.

Main Results:

The hybrid prism coupler (HPC) successfully combined the functions of light extraction and focusing.
Elimination of separate prism and diffusive sheets was achieved.
A 40% reduction in LED backlight system thickness was realized compared to conventional systems.

Conclusions:

The developed HPC offers a streamlined approach to LED backlight design.
This technology enables the creation of significantly thinner and lighter display systems.
The integrated functionality of the HPC presents a viable alternative to traditional optical elements.