Encapsulation Layer Touch Routing for Narrow-Bezel Displays
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Solution Overview
Problem
There is a need to further reduce the bezel area in display devices to enhance their aesthetic appeal and functionality.
Innovation Solution
A novel display device structure is designed to minimize the bezel area by optimizing the space for touch routing lines and ground metal disposition, incorporating a substrate with a display area and non-display area that includes a pad area and bending area, and employing a unique layout for touch routing lines and ground metal.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If the bezel area is reduced to enhance aesthetic appeal and functionality, then the display area占比 increases, but the space for routing touch lines and ground metal becomes insufficient
Solution Approach 1:
The patent utilizes the inclined area of the encapsulation layer to route touch lines, transitioning from a traditional planar routing approach to a three-dimensional configuration. The touch lines are disposed on the inclined surface formed by the encapsulation layer's side surface, effectively using the vertical dimension to accommodate routing paths that would otherwise require additional horizontal space in the bezel area.
Solution Approach 2:
The patent divides the encapsulation layer into distinct functional areas: a planar area for displaying images and an inclined area for routing touch lines and disposing ground metal. This segmentation allows each area to serve its specific purpose efficiently, with the inclined area specifically designated for electrical routing and grounding functions, thereby reducing the required bezel area while maintaining manufacturing feasibility.
2Area of stationary object
If the bezel area is reduced, then the display device becomes more compact and aesthetically pleasing, but the weight reduction may compromise structural integrity
Solution Approach 1:
The encapsulation layer is constructed as a composite structure with a planar area and an inclined area, where the inclined area serves dual purposes: providing structural support for the reduced bezel design and enabling the routing of touch lines and placement of ground metal. This composite configuration maintains structural integrity while achieving the desired compact form factor.
3Area of stationary object
If touch routing lines are disposed on the inclined area of the encapsulation layer, then the bezel area is reduced, but the manufacturing complexity increases
Solution Approach 1:
The inclined area of the encapsulation layer is formed during the encapsulation process itself, before the touch line routing is implemented. This preliminary formation of the inclined surface integrates the routing structure into the existing manufacturing flow, minimizing additional process steps and reducing overall manufacturing complexity despite the innovative three-dimensional routing approach.
Data Source
AI summary
A display device is disclosed that may reduce the bezel area of the display device by including a plurality of light emitting elements disposed on a substrate, an encapsulation layer disposed on the plurality of light emitting elements, and a plurality of touch routing lines disposed in an inclined area of the encapsulation layer.