18735833. LED DISPLAY DEVICE simplified abstract (FUJIFILM Corporation)
Contents
LED DISPLAY DEVICE
Organization Name
Inventor(s)
Wakahiko Kaneko of Minamiashigara-shi (JP)
Wataru Majima of Minamiashigara-shi (JP)
Tatsuya Oba of Minamiashigara-shi (JP)
LED DISPLAY DEVICE - A simplified explanation of the abstract
This abstract first appeared for US patent application 18735833 titled 'LED DISPLAY DEVICE
The LED display device described in the patent application is designed to improve the utilization efficiency of light using a simple configuration with a small number of components.
- LED array formed by arranging multiple light emitting diodes emitting excitation light with a wavelength of less than 420 nm on a substrate.
- Color conversion layer placed at positions corresponding to the LEDs in the array, including red, green, and blue color conversion regions excited by the excitation light.
- Wavelength-selective reflection layer on the side opposite the LED array, selectively reflecting light with the excitation light wavelength.
- RGB reflection layer on the LED array side, reflecting light with wavelengths between 450 nm to 650 nm.
- Partition wall dividing each color conversion region, with a height of 20 μm or less and a width-to-height ratio of 2 or more.
Potential Applications: - LED displays for various electronic devices - Lighting fixtures for commercial and residential use - Signage and advertising displays
Problems Solved: - Improved utilization efficiency of light - Simplified configuration with fewer components - Enhanced color accuracy and brightness
Benefits: - Energy-efficient lighting solutions - Vivid and accurate color reproduction - Cost-effective manufacturing process
Commercial Applications: Title: "Efficient LED Display Device for Enhanced Lighting Solutions" This technology can be used in various commercial applications such as electronic displays, lighting fixtures, and signage, offering energy-efficient and high-quality lighting solutions for different industries.
Questions about LED Display Device: 1. How does the LED array improve the utilization efficiency of light?
- The LED array efficiently emits excitation light with a wavelength of less than 420 nm, maximizing the light output for color conversion.
2. What are the key benefits of the color conversion layer in the LED display device?
- The color conversion layer enhances color accuracy and brightness by converting the excitation light into red, green, and blue light for vivid color reproduction.
Original Abstract Submitted
Provided is an LED display device that can improve utilization efficiency of light with a simple configuration having a small number of components. The LED display device includes an LED array formed by arranging a plurality of light emitting diodes that emit excitation light having a wavelength of less than 420 nm, on a substrate; a color conversion layer; a wavelength-selective reflection layer disposed on a side opposite to the LED array; and an RGB reflection layer disposed on an LED array side with respect to the color conversion layer, in which the color conversion layer is disposed at each of positions corresponding to the light emitting diodes of the LED array, and includes a red color conversion region emitting red light, a green color conversion region emitting green light, and a blue color conversion region emitting blue light, which are excited by the excitation light, and a partition wall that divides each region, a height h of the partition wall is 20 μm or less and a ratio w/h of a width w between partition walls to the height h is 2 or more, the wavelength-selective reflection layer selectively reflects light having a wavelength of the excitation light and is integrally formed at positions corresponding the respective regions, and the RGB reflection layer reflects at least light having a wavelength of 450 nm to 650 nm.
