Electrochromic Electrode Layout for Patterned Color Change
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Solution Overview
Problem
Existing electrochromic devices require multiple lead-out electrodes to achieve patterned color changes, leading to increased complexity, process difficulty, and cost.
Innovation Solution
An electrochromic device design with a first conductive layer having regions separated by vertical grooves and conductive channels, allowing for patterned color changes without additional lead-out electrodes, achieved through controlled groove and channel configurations to vary conduction path lengths and resistances.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple lead-out electrodes are used to achieve patterned color changes, then the color display capability is improved, but the device complexity increases
Solution Approach 1:
The first conductive layer is segmented into multiple regions (first region and second region) by etching grooves that extend through the layer. This segmentation allows different regions to have different conduction path lengths and resistances, enabling patterned color changes without requiring multiple separate lead-out electrodes. The grooves create distinct electrical zones within a single conductive layer structure.
Solution Approach 2:
Different regions of the first conductive layer are given different local properties through the groove configuration. The first region has a shorter conduction path length and lower resistance, while the second region has a longer conduction path length and higher resistance. This local variation in electrical properties enables differentiated color change behavior across the device surface using only one lead-out electrode.
2Adaptability or versatility
If multiple lead-out electrodes are used to control different regions, then the color pattern control is improved, but the process difficulty increases
Solution Approach 1:
The conductive layer is segmented into regions with different conduction characteristics through etching grooves, allowing independent control of color change in different areas. This segmentation is achieved through a single etching process that creates the groove pattern, which is simpler than the alternative of adding multiple separate lead-out electrodes and their associated connection processes.
3Adaptability or versatility
If multiple lead-out electrodes are used to achieve patterned color changes, then the display functionality is improved, but the production cost increases
Solution Approach 1:
The functionality of multiple lead-out electrodes is merged into a single lead-out electrode by incorporating groove-based resistance modulation within the conductive layer. Instead of using separate electrodes for different regions, the invention combines all control functions into one electrode that modulates current distribution through the grooved conductive layer, thereby reducing component count and production cost.
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
Enables patterned color changes with reduced complexity and complexity, while ensuring simplicity of the device, ensuring the electrochromic device, and reducing production costs.
Implementation Method 1
Electrochromism refers to a phenomenon of a stable and reversible color change of optical properties of a material under the action of an applied electric field and shows a reversible change in color and transparency in appearance
Implementation Method 2
After a voltage is applied, ions are conducted from the ion storage layer via the electrolyte layer into the electrochromic layer to achieve color changing
Data Source
AI summary
Provided are an electrochromic device and an electronic terminal. The electrochromic device includes a lead-out electrode and a first base layer, a first conductive layer, an electrochromic layer, a second conductive layer and a second base layer which are stacked in sequence. The first conductive layer has at least one first region and at least one second region. The first region is electrically connected to the lead-out electrode. A first groove is disposed between the first region and the second region and extends through the first conductive layer in a vertical direction. A conductive channel is further disposed between the first region and the second region, and the first groove is broken at the conductive channel. The second region is electrically connected to the first region and the lead-out electrode through the conductive channel.