Same-Layer Multi-Emitter Display Layout With Wavelength Conversion
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Solution Overview
Problem
Existing display devices face challenges in achieving improved front surface luminance, particularly in effectively combining different light emitting elements that emit distinct colors.
Innovation Solution
A display device is designed with a configuration that includes first and second light emitting elements emitting different colors, along with a wavelength conversion pattern. The light emitting elements are disposed on the same layer, and the wavelength conversion pattern converts the emitted light to achieve improved luminance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If different types of light emitting elements emitting different colors are disposed in a sub-pixel, then front surface luminance is improved, but device complexity increases
Solution Approach 1:
The patent combines multiple light emitting elements (first light emitting elements emitting first light and second light emitting elements emitting second light) within the same sub-pixel structure. This merging approach allows different color lights to be generated simultaneously from a single sub-pixel, improving front surface luminance while maintaining a relatively simple overall device architecture by integrating rather than separating the different light emitting components
Solution Approach 2:
The sub-pixel structure is designed to serve multiple functions by incorporating both first light emitting elements and second light emitting elements. This multi-functional design enables a single sub-pixel to generate multiple colors (first light and second light), thereby improving front surface luminance without requiring separate dedicated sub-pixels for each color, thus avoiding increased device complexity
2Manufacturing precision
If wavelength conversion material is used to convert light between different wavelengths, then color reproduction is improved, but manufacturing precision requirements increase
Solution Approach 1:
The patent utilizes wavelength conversion materials that change the wavelength parameter of light through optical conversion. By selecting appropriate wavelength conversion materials with specific conversion characteristics, the system can accurately reproduce different colors by converting between different wavelength ranges, thereby improving color reproduction accuracy while the material selection and configuration are designed to keep manufacturing requirements manageable
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 proposed solution enhances the front surface luminance of the display device by effectively utilizing different light emitting elements and wavelength conversion materials, leading to improved color reproduction and display quality.
Implementation Method 1
The wavelength conversion pattern may include a wavelength conversion material that converts the first light into third light, and a peak wavelength of the third light may be different from the peak wavelength of the first light
Implementation Method 2
the wavelength conversion material may convert the second light into the third light
Data Source
AI summary
A display device includes a first electrode and a second electrode spaced apart from each other; first light emitting elements disposed between the first electrode and the second electrode and emitting first light; second light emitting elements disposed between the first electrode and the second electrode and emitting second light; and a wavelength conversion pattern disposed on the first light emitting elements and the second light emitting elements, wherein a peak wavelength of the first light is different from a peak wavelength of the second light, and the first light emitting elements and the second light emitting elements are disposed on a same layer.