Microcapsule Display Panel with Opposite Charge Particles for Dual Lighting
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Solution Overview
Problem
Conventional electronic paper display technologies face limitations in displaying images in both bright and dark environments without the need for a backlight source, and they struggle to maintain visual comfort and clarity.
Innovation Solution
A display panel comprising microcapsules with charged particles and light-emitting particles, where the charge polarity of the particles is opposite, and a controller applies specific voltages to manipulate the positions of these particles within the microcapsules to reflect or emit light, enabling display in both bright and dark conditions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If conventional electronic paper display technologies are used without a backlight source, then the display can maintain a soft, glare-free display effect similar to printed paper, but the display cannot effectively show images in both bright and dark environments
Solution Approach 1:
The patent combines two different display mechanisms into a single microcapsule system: electrophoretic particles for reflective display in bright environments, and phosphorescent particles for emissive display in dark environments. This merging allows the display to adapt to different lighting conditions while maintaining the glare-free advantage of electronic paper displays.
Solution Approach 2:
The microcapsule structure is designed to perform multiple functions: it contains both electrophoretic particles for light reflection and phosphorescent particles for light emission. This multi-functionality enables the display to operate effectively in both bright and dark environments without requiring separate display systems.
2Adaptability or versatility
If multiple types of particles are included in each microcapsule to enable display in both bright and dark environments, then the display capability is improved, but the structure and control complexity increases
Solution Approach 1:
The patent divides the display system into independent microcapsules, each containing a specific combination of particles. This segmentation allows for modular control where each microcapsule can be independently addressed with specific voltage patterns, simplifying the overall control architecture despite the complexity of individual microcapsule composition.
Solution Approach 2:
The patent employs periodic voltage application with different patterns for different display modes: one voltage pattern for activating electrophoretic particles in bright environments, and another voltage pattern for activating phosphorescent particles in dark environments. This periodic action with varying patterns enables complex functionality through simple temporal control.
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 allows for effective display in various lighting conditions, reducing visual fatigue and maintaining a soft, glare-free display effect similar to printed paper, expanding the usage range of electronic paper displays.
Implementation Method 1
Each microcapsule includes a plurality of charged first particles of a first color and a plurality of charged light-emitting particles. Charge polarity of the plurality of first particles is opposite to charge polarity of the plurality of light-emitting particles.
Implementation Method 2
a plurality of charged light-emitting particles... a color different from the first color... a material of the plurality of light-emitting particles includes a long afterglow luminescent material
Data Source
AI summary
A display panel includes at least one first electrode, a plurality of second electrodes opposite to the at least one first electrode, and a plurality of microcapsules disposed between the at least one first electrode and the plurality of microcapsules. Each microcapsule includes a plurality of charged first particles of a first color and a plurality of charged light-emitting particles. Charge polarity of the plurality of first particles is opposite to charge polarity of the plurality of light-emitting particles, and the first color is different from a color of light emitted by the plurality of light-emitting particles.