Display Panel Active-Area Data-Link Routing for Reduced Bezels
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Solution Overview
Problem
Existing display devices face challenges in reducing the bezel area due to the presence of data link lines in the non-active area, which complicates the reduction of the bezel.
Innovation Solution
A display device with a data link structure that includes data link lines and power lines in the same metal layer, extending in different directions within the active area, and a power pattern in the non-active area, reducing the bezel and enabling stable power voltage transfer.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If data link lines are disposed in the non-active area to transfer data signals to data lines, then data signal transfer is enabled, but the bezel area increases
Solution Approach 1:
The patent moves data link lines from the non-active area (2D plane) into the active area, utilizing the vertical dimension and overlapping structures. Data link lines are disposed to extend from pads in the non-active area through the active area to data lines, using multiple metal layers and overlapping configurations to achieve connection without occupying additional bezel space.
Solution Approach 2:
The patent employs nested structures where data link lines are embedded within the active area structure. The data link lines are positioned to overlap with pixel electrodes and other display structures, with connections made through multiple layers and contact holes, effectively nesting the data transmission path within the existing display structure rather than adding external connections.
2Reliability
If power lines are disposed in the active area in the same metal layer as data link lines, then power voltage transfer is stabilized, but manufacturing complexity increases
Solution Approach 1:
The patent merges power lines and data link lines into the same metal layer within the active area. Power lines are disposed to overlap with data link lines and extend in different directions, sharing the same fabrication process and metal deposition step. This integration reduces the total number of manufacturing steps while maintaining electrical isolation through appropriate routing and overlapping configurations.
Solution Approach 2:
The metal layer is designed to serve multiple functions simultaneously: it carries both data link lines for signal transmission and power lines for voltage supply. The same metal layer and fabrication process accommodate both types of conductors, with power lines extending from the non-active area through the active area to power patterns, while data link lines connect pads to data lines, all within the same structural framework.
Data Source
AI summary
A display device, a display panel and a vehicle are discussed. The display device can include a substrate including an active area having a plurality of subpixels and a non-active area outside the active area, a plurality of data lines connected to the plurality of subpixels, a plurality of data link lines electrically connected to the plurality of data lines in the active area, a plurality of power lines disposed in the active area and disposed in the same metal layer as at least one of the plurality of data lines, and a power pattern disposed in the non-display area and electrically connected to at least one of the plurality of power lines.