Electrowetting Metasurface Display Panel for High Light Utilization
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Solution Overview
Problem
Existing display panels face challenges with low light utilization efficiency, high cost, and short lifespan, particularly in outdoor applications.
Innovation Solution
A display panel incorporating an electrochromic layer, an electrowetting structure, and a metasurface structure, where the metasurface is disposed within the electrowetting structure to achieve reflection and transparent states by controlling the electrochromic layer's closure, enabling high color saturation and low energy consumption without a polarizer.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If liquid crystal display is used, then cost is reduced, but light utilization efficiency is low
Solution Approach 1:
The patent combines electrowetting technology with electrochromic technology to create a hybrid display system. The electrowetting structure controls the closure state of the electrochromic layer, enabling the display to achieve high light utilization efficiency through reflective states while maintaining reliable display performance through the complementary properties of both technologies.
Solution Approach 2:
The display panel uses a composite structure comprising an electrochromic layer with electrochromic material and an electrowetting structure with dielectric layer and hydrophobic layer. This composite design leverages the optical properties of electrochromic material and the electrical control capabilities of electrowetting to achieve superior light utilization efficiency compared to conventional liquid crystal displays.
2Use of energy by moving object
If OLED display is used, then luminous efficiency and color intensity are improved, but cost and lifespan are worsened
Solution Approach 1:
The patent replaces the active light emission mechanism of OLED with a passive reflective mechanism using electrowetting-controlled electrochromic layers. This substitution eliminates the need for organic light-emitting materials, thereby extending display lifespan and reducing cost while maintaining high luminous efficiency through reflective display modes that utilize ambient light.
3Use of energy by moving object
If conventional display structure is used, then manufacturing is simplified, but light utilization efficiency is low
Solution Approach 1:
The display panel is segmented into distinct functional layers: electrochromic layer with specific closure states, electrowetting structure with dielectric and hydrophobic layers, and metasurface structure. This segmentation allows each layer to perform its specific function optimally, achieving high light utilization efficiency through coordinated operation while maintaining manufacturability through standardized layer fabrication processes.
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 display panel achieves high light utilization rates of 70-80% and reduced energy consumption, with quick response times and high color saturation, eliminating the need for a polarizer and offering improved durability.
Implementation Method 1
an electrochromic layer, an electrowetting structure... When the electrochromic layer is completely closed... When the electrochromic layer is partially closed
Implementation Method 2
an electrowetting structure... The electrowetting structure includes a dielectric layer and a hydrophobic layer... When a voltage applied to the first electrode and the second electrode is greater than zero, the electrowetting hydrophobic medium is in a convergence state
Implementation Method 3
the metasurface structure and the electrowetting structure reflect a light with corresponding wavelength to form a reflection state... the light penetrates through the wetted metasurface structure and a part of the unclosed electrochromic layer to form a transparent state
Data Source
AI summary
The present application provides a display panel and a manufacturing method of the display panel. When an electrochromic layer is completely closed, a metasurface structure and an electrowetting structure reflect a light with corresponding wavelength to form a reflection state. When the electrochromic layer is partially closed, the metasurface structure and the electrowetting structure corresponding to a part of the closed electrochromic layer reflect the light with corresponding wavelength to form the reflection state, and the light penetrates through the wetted metasurface structure and a part of the unclosed electrochromic layer to form a transparent state.