Hybrid Active-Passive Display for Power-Efficient Dynamic Content
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Solution Overview
Problem
Current electrophoretic display technology is not suitable for rapidly updating information, as it takes a long time to alter content from one state to another, and active light emitting displays require constant power to maintain dynamic content, leading to power wastage during non-use periods.
Innovation Solution
A dual-display apparatus with an active light emitting display positioned to overlay and partially cover a passive electrophoretic display, allowing the passive display's content to be viewed through the active display, enabling simultaneous viewing of dynamic and static content while optimizing power usage by routing dynamic content to the active display and static content to the passive display.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If active light emitting displays are used to display dynamic content, then the display can rapidly update information, but the display requires constant power supply leading to power wastage during non-use periods
Solution Approach 1:
The display system is divided into two separate display layers: an active light emitting display for dynamic content and a passive electrophoretic display for static content. This segmentation allows each display type to operate in its optimal mode, with the active display updating rapidly when needed and the passive display consuming minimal power for static information.
Solution Approach 2:
The patent combines two different display technologies (active light emitting and passive electrophoretic displays) into a single hybrid display system. The active display is positioned to overlay and partially cover the passive display, creating a unified display apparatus that leverages the strengths of both technologies to resolve the contradiction between rapid updates and power consumption.
2Use of energy by moving object
If electrophoretic displays are used to reduce power consumption, then power usage is minimized for static content, but the display cannot rapidly update information
Solution Approach 1:
The display system segments content into dynamic and static portions, routing dynamic content to the active light emitting display and static content to the passive electrophoretic display. This segmentation allows the system to minimize power consumption for static information while maintaining rapid update capability for dynamic content through the active display.
Solution Approach 2:
The hybrid display system achieves multi-functionality by combining two display technologies with different characteristics. The system can display both rapidly updating dynamic content and power-efficient static content simultaneously, making the display apparatus universally capable of handling various content types optimally.
3Device complexity
If a single display is used to present all information, then device complexity is reduced, but the display cannot optimize power usage for different content types
Solution Approach 1:
Rather than using a single display, the system segments the display function into two separate layers with different technological characteristics. This segmentation enables optimized power usage for different content types, with the active display handling dynamic content and the passive display handling static content.
Solution Approach 2:
The patent merges two different display technologies into a single integrated display apparatus. The active light emitting display and passive electrophoretic display are combined in an overlay configuration, creating a unified system that maintains manageable complexity while achieving optimized power consumption through the complementary strengths of both display types.
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
This configuration allows for efficient power management by using the active display for rapidly updating content and the passive display for static content, reducing power consumption and enhancing viewing experience with composite user content.
Implementation Method 1
active light emitting screens that continuously emit light to provide content to a user
Implementation Method 2
electrophoretic displays display content via the reflection of ambient light as opposed to emitting their own light
Data Source
Figure 1a
Figure 1b~1c
Figure 1d
AI summary
An apparatus (100) comprising a first display (2) configured to be able to display user content and to have an active display state in which said user content can be stably displayed via active powering of the display, and a second display (3) configured to be able to display user content and to have a passive display state in which said user content can be stably displayed without active powering of the display. The apparatus (100) is configured such that the first display (2) is positioned to at least partially overlie and cover the second display (3) to provide a covered region of the second display (3). The apparatus (100) is also configured such that the content on the second display (3) in the covered region can be viewed through the first display (2).