Electrophoretic Display Panel Low-Index Layer for Brighter Output
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Solution Overview
Problem
Existing electronic paper display panels suffer from reduced display brightness due to large-angle light being absorbed within the panel instead of being emitted, affecting display quality.
Innovation Solution
Incorporating a low refractive index layer on the electrophoretic display layer to convert large-angle light into small-angle light for emission, utilizing a siloxane material with a thickness optimized to minimize reflection and enhance display contrast.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If a conventional electrophoretic display panel structure is used, then the panel structure is simple, but large-angle light cannot be emitted effectively, reducing display brightness
Solution Approach 1:
A low refractive index layer is introduced as an intermediary between the electrophoretic display layer and the external environment. This layer mediates the optical interaction by converting large-angle light into small-angle light, enabling effective light emission while maintaining a relatively simple overall panel structure.
Solution Approach 2:
The refractive index parameter of the interface layer is specifically optimized to be lower than that of the electrophoretic display layer. This parameter change enables the optical conversion function, transforming the light emission characteristics without fundamentally altering the panel structure.
2Reliability
If the electrophoretic display layer directly interfaces with the external environment, then the manufacturing process is simple, but light reflection reduces display contrast
Solution Approach 1:
The low refractive index layer serves as an intermediary that reduces optical reflection at the interface. By matching refractive indices more gradually, it minimizes reflection losses and improves display contrast without adding complex manufacturing processes.
Solution Approach 2:
The invention converts the potentially harmful reflection effect into a beneficial one by using the refractive index difference to control light direction. The reflection that would normally reduce contrast is transformed into useful light redirection that enhances display performance.
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 low refractive index layer effectively increases display brightness and improves display quality by enhancing the amount of light emitted, while reducing reflection and contrast issues.
Implementation Method 1
the first functional layer is a low refractive index layer... convert large-angle light into small-angle light for emission
Implementation Method 2
reflective display panels, which display images by reflecting external incident light through internal electrophoretic particles
Data Source
AI summary
The present disclosure provides a display panel and a display device. The display panel includes a first substrate and an electrophoretic display layer located on one side of the first substrate, and the electrophoretic display layer includes a plurality of display units, where a display unit includes an electrophoretic liquid and a plurality of electrophoretic particles located in the electrophoretic liquid. The display panel also includes a first functional layer, where the first functional layer is located on a side of the electrophoretic display layer facing a display surface of the display panel, and the first functional layer is a low refractive index layer.