20240057366. IMPROVED LIGHT EMITTING DEVICES simplified abstract (EXCYTON LIMITED)
Contents
IMPROVED LIGHT EMITTING DEVICES
Organization Name
Inventor(s)
Peter Andrew Levermore of Burringham, Lincolnshire (GB)
IMPROVED LIGHT EMITTING DEVICES - A simplified explanation of the abstract
This abstract first appeared for US patent application 20240057366 titled 'IMPROVED LIGHT EMITTING DEVICES
Simplified Explanation
The patent application describes a device with a stacked blue light emitting structure, including multiple layers of emissive and charge generation materials between two electrodes.
- The device includes a first electrode, a second electrode, a first emissive unit with a first emissive layer, a second emissive unit with a second emissive layer, and a first charge generation layer.
- The first emissive unit emits blue light with a peak wavelength in the visible spectrum between 380 nm to 500 nm, with specific chromaticity coordinates.
- The second emissive unit emits blue light with a different peak wavelength and chromaticity coordinates.
- Both emissive layers contain organic, quantum dot, and/or perovskite light emitting materials.
Potential Applications:
- Display technology for high-quality blue light emission in electronic devices.
- Lighting applications for energy-efficient and color-accurate blue light sources.
Problems Solved:
- Providing a device with stacked blue light emitting layers for improved color quality and efficiency.
- Addressing the need for blue light sources with different peak wavelengths and chromaticities.
Benefits:
- Enhanced color accuracy and brightness in blue light emission.
- Energy-efficient and long-lasting light emitting device.
- Versatile applications in displays and lighting technology.
Original Abstract Submitted
a device is provided. the device comprises a stacked blue light emitting device comprising: a first electrode; a second electrode; a first emissive unit comprising a first emissive layer; a second emissive unit comprising a second emissive layer; and a first charge generation layer; wherein the first emissive unit, the second emissive unit and the first charge generation layer are all disposed between the first electrode and the second electrode; the first emissive unit is disposed over the first electrode; the first charge generation layer is disposed over the first emissive unit; the second emissive unit is disposed over the first charge generation layer; the second electrode is disposed over the second emissive unit; the first emissive unit emits blue light having a peak wavelength in the visible spectrum in the range of 380 nm to 500 nm that is defined as the first peak wavelength; the first emissive unit emits blue light having first cie 1931 (x, y) colour space chromaticity coordinates of (x1, y1); the second emissive unit emits blue light having a peak wavelength in the visible spectrum in the range of 380 nm to 500 nm that is defined as the second peak wavelength; the second emissive unit emits blue light having a second chromaticity having second cie 1931 (x, y) colour space chromaticity coordinates of (x2, y2); the second chromaticity is substantially different to the first chromaticity; and the first emissive layer and the second emissive layer comprise organic light emitting material, quantum dot light emitting material and/or perovskite light emitting material.
