Light Emitting Substrate Layout for Splicing Screen Color Uniformity
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Solution Overview
Problem
Existing display technologies, particularly in splicing screen displays, face challenges with color uniformity due to variations in quantum dots materials, adhesive amounts, and coating uniformity in color conversion layers, leading to color differences among display panels.
Innovation Solution
A light emitting substrate with multiple types of light emitting elements, evenly distributed to emit light of the same color but different wavelength ranges, is used in conjunction with a display panel and a color conversion layer to adjust driving currents and achieve uniform color coordinates across multiple display units.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If a color conversion layer with quantum dots materials is used to convert light wavelength, then the display can achieve desired color output, but color uniformity deteriorates due to variations in materials, adhesive amounts, and coating uniformity
Solution Approach 1:
The patent changes the fundamental parameter of light emission by using multiple types of light emitting elements that emit different wavelength ranges (e.g., 447-448nm and 452-453nm blue light) instead of relying on a single wavelength source with color conversion. This parameter change eliminates the need for quantum dots materials and their associated manufacturing variability, directly resolving the color uniformity issue while maintaining desired color output
Solution Approach 2:
The patent employs a composite light emitting substrate containing multiple types of light emitting elements with different wavelength characteristics. This composite structure combines elements emitting at 447-448nm with elements emitting at 452-453nm, creating a mixed wavelength light source that achieves superior color uniformity without requiring color conversion layers, thereby eliminating the manufacturing precision problems associated with quantum dots coating
2Manufacturing precision
If multiple types of light emitting elements with different wavelength ranges are used, then color uniformity is improved, but device complexity increases
Solution Approach 1:
The patent merges multiple types of light emitting elements directly into a single light emitting substrate array, eliminating the need for separate color conversion layers, quantum dots materials, and associated adhesive coating processes. This consolidation simplifies the overall device structure by integrating the color-tuning function directly into the light emitting elements themselves, reducing manufacturing steps and improving color uniformity
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 effectively reduces or eliminates color differences among display panels by ensuring uniform color coordinates, enhancing the overall display quality and consistency.
Implementation Method 1
A light emitting substrate with multiple types of light emitting elements, evenly distributed to emit light of the same color but different wavelength ranges
Implementation Method 2
a color conversion layer configured to convert light emitted from the light emitting substrate into light of a different color
Data Source
AI summary
A light emitting substrate is provided. The light emitting substrate includes light emitting elements of multiple types. The light emitting elements of different types are configured to emit light of a same color but different wavelength ranges. Light emitting elements of a respective type of the light emitting elements of multiple types are substantially evenly distributed in the light emitting substrate.