Reflective Polarizing Plate for Solar Display Panels
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Solution Overview
Problem
Conventional display panels with solar cells suffer from aesthetic issues due to the visibility of dark purplish colors and cross lines, which affect their appearance quality and design variability, especially when trying to achieve a metal sense and brilliant color with whiteness and brightness.
Innovation Solution
A display panel design featuring a reflective polarizing plate with a pattern in a concave and convex shape on at least one surface, which adjusts light transmission and reflection to minimize the visibility of solar cell lines and colors, combined with a light transmitting substrate and optional diffusing or colored layers to enhance decorative effects and appearance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If a solar cell is disposed on the lower surface side of the display panel, then electric power can be generated through light transmission, but the dark purplish color and cross lines become conspicuous and spoil the appearance
Solution Approach 1:
A reflective polarizing plate is introduced as an intermediary layer between the solar cell and the external environment. This plate selectively reflects polarized light to mask the dark purplish color and cross lines of the solar cell, while still allowing sufficient light transmission to the solar cell for power generation. The diffusing layer acts as another intermediary to scatter light and further hide the solar cell's appearance defects.
Solution Approach 2:
The reflective polarizing plate changes the optical properties by selectively reflecting and transmitting light based on polarization. By orienting the light transmission easy axis at specific angles (45° to 135° relative to the solar cell's cross line), the plate transforms the appearance by minimizing the visibility of the cross lines and dark color while maintaining light transmission for power generation.
2Productivity
If a uniform amount of light is transmitted to each section of the solar cell, then electric power generation efficiency is maximized, but the design flexibility and appearance variation are limited
Solution Approach 1:
The light transmission characteristics are made dynamically adjustable by changing the orientation angle of the reflective polarizing plate's light transmission easy axis. By rotating this axis within the range of 45° to 135° relative to the solar cell's segmentation lines, the system can simultaneously achieve uniform light distribution for power generation and optimize appearance by minimizing cross line visibility, providing design flexibility without sacrificing efficiency.
3Object-affected harmful factors
If a colored layer or diffusing layer is added to hide the solar cell color, then appearance quality improves, but the device complexity and manufacturing steps increase
Solution Approach 1:
The reflective polarizing plate serves multiple functions simultaneously: it masks the dark purplish color and cross lines of the solar cell, controls light transmission for uniform power generation, and provides a basis for decorative patterns. The diffusing layer also performs dual functions of scattering light to hide the solar cell while maintaining overall light transmission. This multi-functionality reduces the need for additional separate cosmetic layers.
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 effectively hides the dark purplish color and cross lines of the solar cell, creating a sophisticated and expensive-looking display panel with improved design variation and a thin profile, while maintaining sufficient light transmission for electric power generation.
Implementation Method 1
a reflective polarizing plate... having a light transmission easy axis and a light reflection axis, and a pattern in a concave and convex shape formed on at least one surface of the reflective polarizing plate
Implementation Method 2
a solar cell disposed on the lower surface side of the display panel to generate an electric power
Implementation Method 3
a diffusing layer 102 disposed between the substrate 101 and the polarizing substance 103
Data Source
AI summary
A display panel is provided with a solar cell, a light transmitting substrate arranged on a side of the solar cell to be seen, and a reflective polarizing plate. An uneven pattern is arranged on at least one surface of the reflective polarizing plate. The pattern desirably has concave and convex shape formed on at least one surface of the reflective polarizing plate. The respective concave and convex patterns may be different from each other. The reflective polarizing plate is provided with a light reflection axis and a light transmission easy axis.