Flexible Electrochromic Display Panel with Moisture Barrier
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Solution Overview
Problem
Conventional display panels lack adjustable transparency, which affects visibility in varying light conditions, and are vulnerable to moisture ingress due to the absence of effective barrier layers.
Innovation Solution
A display panel with a flexible electrochromic substrate comprising two flexible substrate layers and an electrochromic part that changes transparency in response to a driving signal, combined with barrier layers to block moisture, allowing for adjustable transparency and improved visibility in outdoor environments.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If conventional display panels are used, then the structure is simple, but the transparency cannot be adjusted and visibility in sunlight is poor
Solution Approach 1:
The patent applies electrochromic layers that change their optical properties (transparency/opacity) in response to electrical signals. The electrochromic part includes first and second electrochromic layers that can switch between transparent and opaque states, enabling adjustable transparency to improve visibility in outdoor sunlight conditions while maintaining a relatively compact display structure.
2Reliability
If conventional display panels without barrier layers are used, then the manufacturing process is simpler, but the panel is vulnerable to moisture ingress
Solution Approach 1:
The patent employs multiple barrier layers including first and second inorganic barrier layers formed between the electrochromic layers and the flexible substrates. These inorganic barrier layers provide effective moisture blocking capabilities, protecting the electrochromic components from moisture ingress and improving the overall reliability of the flexible display panel in humid environments.
3Adaptability or versatility
If electrochromic parts are added to enable transparency adjustment, then visibility in outdoor environments improves, but the device complexity increases
Solution Approach 1:
The patent implements dynamically controllable transparency through electrochromic layers that can switch between transparent and opaque states based on applied electrical signals. The first and second electrochromic layers are controlled independently through respective driving signals, allowing dynamic adjustment of display transparency to adapt to varying outdoor lighting conditions and user preferences.
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 enables adjustable transparency for enhanced visibility in sunlight and effectively blocks moisture, improving the display panel's performance in outdoor conditions while maintaining reliability.
Implementation Method 1
an electrochromic part disposed between the first and second flexible substrate layers and configured to discolor in response to a driving signal
Implementation Method 2
the OLED device among the flat panel display devices displays an image using an organic light emitting diode that emits a light based on recombination of electrons and holes
Data Source
AI summary
A display panel includes a flexible electrochromic substrate comprising a first flexible substrate layer, a second flexible substrate layer opposing to the first flexible substrate layer and an electrochromic part disposed between the first and second flexible substrate layers and configured to discolor in response to a driving signal, a transistor layer disposed on the flexible electrochromic substrate, the transistor layer comprising a plurality of transistors and an organic light emitting diode layer disposed on the flexible electrochromic substrate on which the transistor layer is disposed, the organic light emitting diode layer comprising a plurality of organic light emitting diodes connected to the plurality of transistors.