Display Panel Light Transmission Layer for Micro-Display Color Purity
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Solution Overview
Problem
Existing micro-display technologies suffer from low color saturation and color crosstalk due to the mixing of red, green, and blue light, resulting from near-ultraviolet light conversion, which affects the purity and quality of the display.
Innovation Solution
A display panel design incorporating sub-pixel units with an excitation light source, a target light conversion layer, and a target light transmission layer, where the target light transmission layer is disposed on the light exiting surface of the target light conversion layer to reflect excitation light, enhancing light purity by preventing its transmission and promoting re-conversion, along with a light converging layer to minimize crosstalk between sub-pixel units.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If a near-ultraviolet micro-light-emitting diode is used with a light conversion layer to convert near-ultraviolet light into red, green, and blue light, then the implementation is easier, but the color saturation is low and color crosstalk occurs between sub-pixel units
Solution Approach 1:
The light conversion layer is divided into multiple sub-layers, each responsible for converting near-ultraviolet light into specific color wavelengths (red, green, blue). This segmentation allows each sub-layer to specialize in a particular color conversion function, improving color saturation and reducing spectral overlap that causes color crosstalk, while maintaining the overall ease of implementation using a single near-ultraviolet light source
Solution Approach 2:
A reflective layer is introduced as an intermediary component between the light conversion layer and the substrate. This reflective layer redirects downward-directed near-ultraviolet light back through the light conversion layer, ensuring that all excitation light has multiple opportunities to interact with the color conversion materials. This increases the efficiency of light conversion and enhances color saturation without requiring changes to the fundamental implementation approach
2Ease of manufacture
If a near-ultraviolet micro-light-emitting diode is used with a light conversion layer, then the implementation is easier, but excitation light mixes with converted light causing color crosstalk
Solution Approach 1:
The light conversion layer is segmented into multiple sub-layers, each optimized for converting near-ultraviolet light into specific color wavelengths (red, green, blue). This segmentation allows each sub-layer to specialize in a particular color conversion function, improving color saturation and reducing spectral overlap that causes color crosstalk, while maintaining the overall ease of implementation using a single near-ultraviolet light source
Solution Approach 2:
The reflective layer is designed to selectively extract and redirect only the near-ultraviolet excitation light that passes through or reflects off the light conversion layer, sending it back for another conversion attempt. This extraction and redirection mechanism ensures that unconverted excitation light does not mix with the converted visible light, thereby eliminating color crosstalk while maintaining implementation simplicity
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
This configuration improves color saturation and display quality by ensuring only target light is transmitted, reducing the thickness of the color conversion layer and preventing excessive light angles, thereby alleviating defects in existing micro-display technologies.
Implementation Method 1
a target light conversion layer disposed in a light exiting direction of the excitation light source for converting the excitation light into a target light
Implementation Method 2
a target light transmission layer disposed in a light exiting direction of the target light conversion layer for transmitting the target light generated by the target light conversion layer and reflecting the excitation light passing through the target light conversion layer
Implementation Method 3
a light converging layer is further included and disposed between the adjacent sub-pixel units for converging the target light emitted by the sub-pixel units
Data Source
AI summary
The present invention provides a display panel and a method of manufacturing the same. The display panel employs a target light transmission layer disposed on a target light conversion layer for transmitting the target light generated by the target light conversion layer and reflecting the excitation light passing through the target light conversion layer, such that the target light emitted by the sub-pixel units is mixed with a small amount of excitation light or even without excitation light, so that the target light emitted by the sub-pixel units is relatively pure, thereby solving the technical problem that the existing micro-display technology has defects.