EPD Panel on Home Appliance Door for Dynamic Design
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Solution Overview
Problem
Existing home appliances require costly and time-consuming replacement of exterior panels to change their design, leading to inefficiencies and potential damage to the electrophoretic display panel.
Innovation Solution
A home appliance design incorporating an electrophoretic display (EPD) panel on a door, featuring a plate that transmits light, electrodes, an electrophoretic layer with color cells, and a protective plate, allowing for design changes without panel replacement and reducing power consumption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If an electrophoretic display panel is integrated into the door panel, then exterior design changes become possible without replacement, but the risk of damage to the display panel increases
Solution Approach 1:
The door assembly is segmented into distinct functional layers: the door panel, the electrophoretic display panel, and a protective plate. This segmentation allows the display panel to be integrated into the door structure while being physically separated and protected by the additional protective plate layer, thus enabling design changes without replacement while reducing damage risk
Solution Approach 2:
A protective plate is positioned between the electrophoretic display panel and the external environment to provide beforehand protection. This protective plate acts as a cushioning element that prevents direct exposure of the display panel to potential damage sources, thereby maintaining reliability while enabling design versatility
2Loss of time
If the electrophoretic display panel is used for exterior design changes, then panel replacement is eliminated, but power consumption increases for maintaining color modes
Solution Approach 1:
The electrophoretic display panel utilizes self-service characteristics where the electrophoretic layer maintains its color state passively without requiring continuous power input. The charged particles in the electrophoretic layer remain in their positioned state due to electrostatic forces, enabling the display to maintain color modes with minimal or no power consumption, thus eliminating panel replacement time while avoiding excessive energy use
3Reliability
If a protective plate is added to protect the electrophoretic display panel, then durability is enhanced, but device complexity increases
Solution Approach 1:
The protective plate serves multiple functions simultaneously: it protects the electrophoretic display panel from damage, provides a mounting surface for integration into the door assembly, and contributes to the overall structural integrity of the door. This multi-functionality reduces the need for additional separate components, thereby enhancing protection while minimizing the increase in device complexity
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 dynamic exterior design changes without replacing panels, reduces power consumption in maintaining color modes, and enhances the durability of the electrophoretic display panel by using a protective plate.
Implementation Method 1
an electrophoretic layer between the first electrode and the second electrode, and including a color cell in which first charged particles having a first color and second charged particles having a second color different from the first color are accommodated, the first charged particles and the second charged particles being flowable within the color cell, the second charged particles having a different charge than the first charged particles
Implementation Method 2
a plate configured to cover at least a portion of the front side of the door body and to allow light to pass through
Data Source
AI summary
A home appliance including a main body; and a door to open and close the main body; and an electrophoretic display (EPD) panel on the door and including a plate to cover a portion of the door and to allow light to pass through, a first electrode configured to allow light pass through and a second electrode between the plate and the door, and an electrophoretic layer between the first electrode and the second electrode, and including a color cell in which first charged particles having a first color, and second charged particles having a second color are accommodated, the first charged particles and the second charged particles being flowable within the color cell, the second charged particles have a different charge than the first charged particles.