Light-Emitting Panel With Optical Adjustment Layer For Multicolor Emission
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Solution Overview
Problem
Portable information terminals and display devices require reduced power consumption, enhanced portability, and the ability to display high-definition images without causing eyestrain, while also being lightweight and easy to manufacture, with a focus on multicolor light emission rather than increased color gamut.
Innovation Solution
A light-emitting panel structure comprising multiple light-emitting elements with optical adjustment layers and light-emitting organic compounds between reflective and semi-transmissive films, optimizing optical path lengths to achieve high brightness, low eyestrain, and efficient multicolor emission with reduced power consumption, where the optical adjustment layer can also serve as an electrode to simplify the structure and manufacturing process.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple light-emitting elements with different optical path lengths are used to achieve multicolor emission, then color variety is improved, but device complexity increases
Solution Approach 1:
The light-emitting panel is divided into multiple independent light-emitting elements (first, second, and third light-emitting elements), each with specific optical path length characteristics. This segmentation allows each element to emit different colors (high saturation pale color, red, and color different from red) while maintaining overall system manageability and functional clarity.
Solution Approach 2:
The optical adjustment layer is designed to serve dual functions: it adjusts the optical path length to achieve desired emission characteristics and simultaneously functions as an electrode. This multi-functionality reduces the total number of components needed in each light-emitting element while maintaining full functionality.
2Illumination intensity
If optical path length is optimized for high brightness emission, then brightness is improved, but manufacturing precision requirements increase
Solution Approach 1:
The patent specifies precise optical path length parameters (N/2 where N is a natural number) for different wavelength ranges (400-600 nm and 600-800 nm). By establishing clear parameter specifications for the optical adjustment layer thickness, the invention enables controlled light emission characteristics while providing manufacturable guidelines for achieving the desired optical performance.
3Adaptability or versatility
If multiple layers and components are added to achieve multicolor emission, then color capability is improved, but power consumption increases
Solution Approach 1:
The optical adjustment layer performs multiple functions simultaneously: it controls optical path length for color emission, serves as an electrode for electrical connection, and contributes to the overall device structure. This multi-functionality eliminates the need for separate dedicated electrode layers and structural components, thereby reducing total power consumption while maintaining multicolor emission capability.
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 a light-emitting panel capable of multicolor light emission with reduced power consumption, high brightness, and low eyestrain, even during long-term use, while simplifying the manufacturing process and reducing resource usage.
Implementation Method 1
light emission can be obtained from the light-emitting organic compound when voltage is applied between the pair of electrodes
Implementation Method 2
the optical path length between which is N/2 (N is a natural number) of the length greater than or equal to 600 nm and less than 800 nm
Data Source
AI summary
A light-emitting panel including at least a first light-emitting element, each light-emitting element having, between a first conductive film and a second conductive film, a first layer including a metal and a second layer including a light-emitting organic compound. The second layer having the organic compound emits light having a wavelength between 600 nm and 800 nm, and light having a wavelength between 400 nm and 600 nm. The distance between the first conductive film and the second conductive film in one of the light emitting elements being N/2 (where N is a natural number) of a length between 600 nm and 800 nm, and the distance between the first conductive film and the second conductive film in the other one of the light-emitting elements being N/2 (where N is a natural number) of a length between 400 nm and 600 nm.