Borderless Display Stack Using Conductive Perimeter Electrode
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Solution Overview
Problem
Conventional electronic displays have reduced 'real estate' due to borders or margins, which limits the area available for presenting information and increases the overall size of the device.
Innovation Solution
The implementation of a borderless display stack that extends the active display area to the edges of the electronic device housing, using a conductive layer to drive the display margin uniformly, allowing for increased content presentation without increasing the device's dimensions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If borders or margins are added around the display to frame content, then readability is improved, but the display area is reduced
Solution Approach 1:
The patent extracts the border function from a separate physical margin and integrates it into the display area through a conductive layer that can be driven to create border effects within the active display region, thereby eliminating the need for separate margin areas while maintaining the framing function
Solution Approach 2:
The patent transitions from a traditional 2D display with static margins to a multi-layered display stack where the conductive layer adds a new dimensional element that can be electrically controlled to create dynamic border effects within the existing display area
2Shape
If borders or margins are added around the display, then content framing is improved, but the electronic device dimensions increase
Solution Approach 1:
The patent merges the border function with the display area by using a conductive layer that can be driven to create border effects within the active display region, combining what were previously separate functions (display content and framing borders) into a single integrated structure
Solution Approach 2:
The patent uses electrical parameter changes (voltage application to the conductive layer) to dynamically control the appearance of borders, allowing the same physical structure to serve both as display area and as framing element depending on the electrical state
3Loss of information
If the display area is increased to present more content, then information presentation is improved, but the device size increases
Solution Approach 1:
The patent introduces dynamic control through the conductive layer that can be electrically driven to create border effects, allowing the display to dynamically adjust its effective content area without physical changes to the device structure, thereby presenting more content within the same device footprint
Data Source
AI summary
Systems, methods, and computer-readable media are disclosed for borderless display stacks for use with electronic devices. In one embodiment, a display stack may include a thin film transistor (TFT) layer comprising an active area, an electrophoretic layer coupled to the TFT backplane, and an electrode coupled to a perimeter portion of the electrophoretic layer. The electrode may extend beyond peripheral edges of the electrophoretic layer. A portion of the electrode may be positioned between the electrophoretic layer and the TFT backplane, and the electrode may surround the active area. The display stack may include a cover layer coupled to the electrophoretic layer.