Display Panel Signal Layer Stacking for Narrow Bezels
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
There is a conflict between narrowing the bezel and improving display brightness and performance in existing display panels, as reducing the width of signal transmission layers to achieve a narrow bezel can hinder high-brightness display capabilities.
Innovation Solution
The display panel design includes a base, signal transmission layers, and dams, where the signal transmission layers are extended and stacked, and the dams are positioned to avoid adhesive overflow, allowing for a narrow bezel while maintaining high display brightness.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Length of stationary object
If the width of signal transmission layers is reduced to narrow the bezel, then the bezel width is reduced, but the display brightness and performance deteriorate
Solution Approach 1:
The signal transmission structure transitions from a single-layer planar configuration to a multi-layer stacked configuration. The first and second signal transmission layers are stacked at different heights, with the first layer having a first width and the second layer having a second width greater than the first width. This vertical stacking allows the signal transmission path to occupy more spatial volume without increasing the horizontal bezel width, thereby maintaining display brightness while achieving narrow bezel.
2Illumination intensity
If the width of signal transmission layers is increased to improve display brightness, then the display brightness is improved, but the bezel width increases
Solution Approach 1:
Instead of increasing the horizontal width of signal transmission layers which would expand the bezel, the patent utilizes the vertical dimension by stacking multiple signal transmission layers at different heights. The second signal transmission layer is positioned above the first layer and extends further in the horizontal direction, creating a stepped configuration that increases effective signal transmission area without proportionally increasing the horizontal footprint, thus improving brightness while controlling bezel width.
Solution Approach 2:
The first and second signal transmission layers are nested in a stacked configuration where the second layer is positioned above and partially extends beyond the first layer. This nesting arrangement allows the signal transmission structure to maximize its effective area within a compact horizontal footprint, enabling improved display brightness without significant increase in bezel width.
3Reliability
If dams are positioned to prevent adhesive overflow, then encapsulation reliability is improved, but the available space for signal transmission layers is reduced
Solution Approach 1:
The patent resolves the space conflict by utilizing the vertical dimension for signal transmission layers. The first signal transmission layer is positioned at a lower height while the second signal transmission layer is stacked above it at a higher height. This vertical stacking allows the signal transmission structure to achieve sufficient area for high-brightness display while maintaining adequate horizontal spacing from the dams, thus ensuring both encapsulation reliability and display performance.
Data Source
AI summary
A display panel and an electronic device. The display panel has a display area and a non-display area. The display panel includes a base, a first signal transmission layer, a second signal transmission layer, a first dam, and a second dam. The first signal transmission layer is disposed on the base. The second signal transmission layer is disposed on a surface of a side of the first signal transmission layer away from the base. A first orthographic projection is defined by an orthographic projection of the second dam on the base. A second orthographic projection is defined by an orthographic projection of a second end portion of the second signal transmission layer on the base. The first orthographic projection is located at a side of the second orthographic projection close to the display area.