Novel Light Input Management for Leaky Mode Devices in RGB Displays ID: 2017-065

This invention simplifies RGB display technology by enabling red, green, and blue light to enter the waveguide at the same angle, improving efficiency and design.

Technology Overview

The technology represents a significant advancement in RGB display applications. It addresses the complexity of traditional grating input couplers by allowing all three wavelengths of light (red, green, and blue) to enter the waveguide at the same angle. This is achieved through the superpositional response of gratings, which enables multiple wavelength input couplers to coexist in the same location without needing to alter the grating or waveguide depth. The invention streamlines the design and functionality of leaky mode devices by consolidating multiple grating patterns into a single grating, enhancing the device's efficiency through a binary masking and etching process.

Key Advantages

• Simplifies the structure and function of RGB display devices by allowing all colors of light to enter at the same angle
• Eliminates the need for different angles of entry for red, green, and blue light, reducing design complexity
• Consolidates multiple grating patterns into a single grating, enhancing efficiency
• Enables the coexistence of multiple wavelength input couplers without altering grating or waveguide depth

Problems Addressed

• Complexity of traditional grating input couplers in RGB displays
• Need for different entry angles for each color of light
• Inefficiency and design limitations caused by separate grating patterns for each wavelength

Market Applications

• RGB display technology for televisions, monitors, and mobile devices
• Leaky mode devices in optical engineering fields
• Potential applications in augmented reality (AR) and virtual reality (VR) devices

Additional Information

Technology ID: 2017-065
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Date Published: 28 March, 2025