Display Panel Layout With Stacked Emitters for Narrow Bezels
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing display panels face challenges in extending the display region while minimizing the bezel width and ensuring improved electrical reliability of light emitting elements.
Innovation Solution
The display panel design includes a base layer with multiple display regions and a non-display region, featuring a demultiplexer circuit, pixel drivers, and light emitting elements that overlap and are electrically connected in specific configurations, with signal selection lines and switching transistors, and shielding electrodes to enhance electrical connectivity and reliability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If the display region is extended by reducing bezel width, then the display area increases, but the electrical reliability of light emitting elements may deteriorate
Solution Approach 1:
The patent extends the display region by utilizing the vertical dimension (layer stacking) rather than expanding horizontal boundaries. Multiple light emitting elements are stacked vertically at the same planar position, allowing display area expansion without increasing bezel width, while maintaining electrical reliability through controlled vertical connections.
Solution Approach 2:
The patent implements a nested structure where multiple light emitting elements are positioned within the same planar footprint by stacking them in the vertical dimension. The first, second, and third light emitting elements are nested at different heights, allowing the display to cover a larger effective area while maintaining a compact horizontal form factor and reduced bezel width.
2Area of stationary object
If multiple light emitting elements are stacked to extend display region, then display area increases, but device complexity increases
Solution Approach 1:
The demultiplexer circuit serves multiple functions: it selectively connects different light emitting elements to data lines, manages signal distribution to multiple pixels, and enables the extended display region functionality. This multi-functional approach reduces the need for separate dedicated circuits for each light emitting element, thereby managing complexity while achieving area expansion.
Solution Approach 2:
The patent divides the pixel structure into segments, with each pixel containing multiple light emitting elements that can be independently controlled through the demultiplexer. This segmentation allows the complex multi-element structure to be managed through modular design, where the demultiplexer selectively activates specific segments (light emitting elements) based on display requirements.
3Area of stationary object
If light emitting elements are electrically connected across display regions, then display region extension is achieved, but manufacturing precision requirements increase
Solution Approach 1:
The patent transitions electrical connections from horizontal routing across multiple planar regions to vertical routing through stacked layers. The connecting wires and conductive layers are positioned in the vertical dimension, allowing electrical connections between light emitting elements without requiring high-precision horizontal alignment across large display regions, thus reducing manufacturing precision requirements.
Solution Approach 2:
The patent implements localized electrical connections where each light emitting element is connected to its nearest conductive layer and connecting wire within the same or adjacent vertical layer. This local connection approach minimizes the distance and complexity of electrical pathways, reducing the cumulative alignment errors that would accumulate in long-range horizontal connections across extended display regions.
Data Source
AI summary
A display panel includes a base layer including a first display region, a second display region adjacent to the first display region, and a non-display region adjacent to the first display region and the second display region, a demultiplexer circuit overlapping the second display region, a first pixel including a first pixel driver overlapping the first display region, and a first light emitting element overlapping the first display region and electrically connected with the first pixel driver, and a second pixel including a second pixel driver overlapping the first display region, and a second light emitting element and a third light emitting element that are electrically connected with the second pixel driver. At least one of the second light emitting element and the third light emitting element overlaps the second display region and is disposed on the demultiplexer circuit.