Monochromatic Micro-LED Display Panel with Rotating Color Diaphragm
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Solution Overview
Problem
Micro-LED display devices require a large number of LEDs for color display, leading to high demands on transferring yield and complexity.
Innovation Solution
A display panel with a monochromatic electroluminescent component, a rotating mechanism featuring a diaphragm set with multiple colors, and a micro-electromechanical controller to control the rotation of the diaphragms, allowing light from the electroluminescent component to pass through the diaphragms and emit desired colors, reducing the number of electroluminescent components needed.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a RGB array with three LEDs is used for color display, then color display function is directly realized, but a large amount of micro-LEDs need to be transferred and higher transferring yield is required
Solution Approach 1:
A single monochromatic micro-LED is combined with a rotatable diaphragm assembly containing multiple colored diaphragms (red, green, blue). The diaphragm assembly acts as a multi-functional component that enables the single micro-LED to produce multiple colors by rotating different diaphragms into the light path, replacing the need for three separate micro-LEDs.
Solution Approach 2:
The diaphragm assembly is designed to rotate dynamically between different positions. The rotation mechanism allows the system to switch between different color states by moving the diaphragms into or out of the light path, enabling a single static micro-LED to produce dynamic color changes.
2Adaptability or versatility
If a RGB array with three LEDs is used for color display, then color display function is directly realized, but higher request for transferring yield is required
Solution Approach 1:
The diaphragm assembly serves as a universal component that enables a single micro-LED to perform the function of three micro-LEDs. By integrating multiple colored diaphragms into one assembly, the system reduces the number of transfer operations from three separate micro-LEDs to one micro-LED plus one diaphragm assembly.
Solution Approach 2:
Multiple colored diaphragms (red, green, blue) are merged into a single rotatable assembly. This consolidation reduces the number of separate components that need to be transferred and positioned, thereby improving the overall transferring yield and manufacturing efficiency.
3Adaptability or versatility
If multiple colored diaphragms are added to a single pixel unit, then color display capability is enhanced, but device structure becomes more complex
Solution Approach 1:
Instead of having multiple static light-emitting components, the patent uses a dynamic rotation mechanism. The rotatable diaphragm assembly allows multiple colored filters to be positioned in the light path sequentially, reducing structural complexity compared to having multiple simultaneous light-emitting elements and their associated control circuits.
Solution Approach 2:
The patent adds a rotational dimension to the pixel unit structure. By introducing rotation as a new degree of freedom, the system can achieve color display with a single micro-LED and a rotatable diaphragm assembly, rather than requiring multiple micro-LEDs arranged in a spatial array.
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 solution significantly reduces the number of electroluminescent components required, improving transferring yield and enabling efficient color display by using a monochromatic electroluminescent component with a rotating diaphragm mechanism.
Implementation Method 1
a monochromatic electroluminescent component, which is disposed on the substrate
Implementation Method 2
a micro-electromechanical controller, which is connected to the bracket to control rotation of the bracket
Data Source
AI summary
The present disclosure provides a display panel, a display device and a display method. The display panel includes a substrate and several pixel units formed on the substrate. The pixel unit includes a monochromatic electroluminescent component, which is disposed on the substrate; a rotating mechanism, which includes a bracket and a diaphragm set disposed on the bracket, the diaphragm set comprising diaphragms with at least two different colors; and a micro-electromechanical controller, which is connected to the bracket to control rotation of the bracket, so as to control an orthographic projection of the diaphragm on the substrate to at least partially overlap with an orthographic projection of the monochromatic electroluminescent component on the substrate, such that a light emitted by the monochromatic electroluminescent component permeates through the diaphragms of different colors, and emits a light corresponding to the colors of the diaphragms.