Array Substrate with Electrochromic Layer for Mirror Display
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Solution Overview
Problem
Current mirror display panels face challenges with high reflectivity of the mirror reflection layer, which reduces overall transmittance and contrast, necessitating increased light source intensity for display visualization.
Innovation Solution
An array substrate design featuring a reflective electrode layer, electrochromic layer, and light-emitting layer, where the electrochromic layer can switch between transparent and opaque states, allowing independent control of the mirror display function and improving light transmittance and contrast.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If a mirror reflection layer with high reflectivity is used to achieve mirror display function, then the mirror reflection effect is improved, but the overall light transmittance and image contrast deteriorate
Solution Approach 1:
The mirror reflection layer is segmented into multiple reflective electrodes (first reflective electrode and second reflective electrode) that can be independently controlled. This allows selective activation of reflection in different regions, enabling the display to show images in certain areas while maintaining mirror reflection in other areas, thus resolving the contradiction between mirror effect and light transmittance.
Solution Approach 2:
The reflective electrodes are made dynamically controllable through driving circuits that can adjust their reflectivity state. By dynamically switching between reflective and transparent states, the system can adapt to different display modes (mirror mode vs. display mode), eliminating the fixed trade-off between reflection and transmittance.
2Illumination intensity
If the light source intensity is increased to achieve display visualization, then the display brightness is improved, but the power consumption increases
Solution Approach 1:
The display area is segmented into multiple light-emitting units corresponding to different pixel regions, each controlled by dedicated driving circuits. This allows selective activation of only the necessary light-emitting units, reducing overall power consumption while maintaining required display brightness in visible areas.
Solution Approach 2:
The system changes the optical parameters (reflectivity/transmittance) of the reflective electrodes dynamically based on display requirements. By adjusting the state of reflective electrodes, the system can optimize light utilization efficiency, reducing the need for high light source intensity and thereby lowering power consumption.
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
Enhances light transmittance and reduces power consumption by allowing independent control of the mirror display function, improving image contrast without increasing light-emitting unit brightness.
Implementation Method 1
an electrochromic layer provided on a surface of the first reflective electrode away from the base substrate
Data Source
AI summary
The present disclosure provides an array substrate and a preparation method thereof, a display panel and a driving method thereof, which belongs to the field of display technology. The array substrate includes a base substrate, a driving circuit layer, a reflective electrode layer, a light-emitting layer, an electrochromic layer, and a common electrode layer. The driving circuit layer is provided with a first and second driving circuit. The reflective electrode layer is provided on a side of the driving circuit layer away from the base substrate and provided with a first and second reflective electrode insulated from each other. The light-emitting layer includes a light-emitting unit arranged on the surface of the second reflective electrode away from the base substrate. The electrochromic layer is arranged on the surface of the first reflective electrode away from the base substrate. The common electrode layer covers the electrochromic layer and the light-emitting unit.