Optical Functional Layer Layout for Spectral Overlap Control
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Solution Overview
Problem
Existing optical functional devices, functional panels, display devices, input/output devices, and data processing devices face challenges in achieving high convenience, usefulness, and reliability due to inefficiencies in light emission and photoelectric conversion processes.
Innovation Solution
Incorporating a light-emitting function, photoelectric conversion function, first and second electrodes, and an optical functional layer with specific spectral characteristics and layer configurations to minimize overlap between emission and sensitivity spectra, allowing efficient light emission and conversion.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the emission spectrum and spectral sensitivity characteristic have significant overlap, then photoelectric conversion efficiency is improved, but light emission efficiency deteriorates
Solution Approach 1:
The patent divides the optical functional device into distinct first and second layers with different spectral characteristics. The first layer is optimized for light emission with peak wavelength λ1, while the second layer is optimized for photoelectric conversion with peak sensitivity at wavelength λ2. This segmentation allows each layer to specialize in its function without spectral interference.
Solution Approach 2:
The patent applies local quality by creating spatially differentiated spectral properties within the device. The first layer has emission characteristics tailored for efficient light generation, while the second layer has sensitivity characteristics tailored for efficient photoelectric conversion. Each region has optimized properties for its specific function rather than uniform properties throughout.
2Device complexity
If a single-layer structure is used, then device complexity is reduced, but functional performance deteriorates
Solution Approach 1:
The patent merges two distinct functional layers into a single integrated optical functional device structure. The first layer for light emission and the second layer for photoelectric conversion are combined in a stacked configuration, allowing both functions to coexist in one device while maintaining their spectral independence through the wavelength relationship condition.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The solution enables highly convenient, useful, and reliable optical functional devices and panels by enhancing light emission efficiency and photoelectric conversion sensitivity, facilitating applications such as biosensors and display devices.
Implementation Method 1
a light-emitting function, which converts electrical energy into first light
Implementation Method 2
a photoelectric conversion function, which has a spectral sensitivity characteristic
Implementation Method 3
the second layer includes a light-absorbing material, the light-absorbing material has a first absorption spectrum
Data Source
AI summary
A novel optical functional device that is highly convenient, useful, or reliable is provided. The optical functional device includes a light-emitting function, a photoelectric conversion function, a first electrode, a second electrode, and an optical functional layer. The light-emitting function converts electrical energy into first light, the first light has a first emission spectrum, and the first emission spectrum exhibits a maximum peak at a first wavelength. At a second wavelength, the intensity of the first emission spectrum is 80% of the maximum peak. The photoelectric conversion function has a spectral sensitivity characteristic; at a third wavelength, the spectral sensitivity characteristic has a maximum sensitivity within a range of 420 to 720 nm inclusive; and at a fourth wavelength, the sensitivity of the spectral sensitivity characteristic is 80% of the maximum sensitivity. The third wavelength is positioned closer to the second wavelength than to the first wavelength, and the fourth wavelength is positioned closer to the first wavelength than to the third wavelength.