Display Array Substrate with Routed Leads for Ultra-Narrow Frames
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Solution Overview
Problem
Display devices with rounded corners require wider frames to accommodate leads, limiting the ability to achieve narrow or ultra-narrow frame designs and rounded corner aesthetics.
Innovation Solution
The array substrate design allows first leads to pass through a first region from a second region to a bonding region, eliminating the need for a wider frame outside the second region by routing leads directly from the first region to the bonding region, and incorporating a light shielding structure in the same layer as the leads to reduce resistance and crosstalk.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If leads are directly extended from the second region to the bonding region, then the connection is simple, but a wider frame is required outside the second region
Solution Approach 1:
The lead routing is changed from a direct lateral extension in the plane to a path that passes through the first region (display region) to reach the bonding region. This dimensional reconfiguration allows the leads to exit through the display region rather than requiring additional lateral frame space, thereby reducing frame width while maintaining connection simplicity.
2Ease of manufacture
If a wider frame is set outside the second region to accommodate leads, then lead routing is easier, but narrow frame design and rounded corner aesthetics are compromised
Solution Approach 1:
The substrate is divided into a first region (display region) and a second region (non-display region), with leads routed through the first region to reach the bonding region. This segmentation allows the leads to utilize the display region space for routing, eliminating the need for additional lateral frame space and enabling narrow frame designs with rounded corners.
3Length of stationary object
If leads are routed through the first region from the second region, then frame width is reduced, but lead resistance and crosstalk may increase
Solution Approach 1:
The light shielding structure and the lead layer are merged into the same layer, with the light shielding structure positioned to overlap the lead's orthographic projection. This integration provides electromagnetic shielding for the leads, reducing crosstalk and improving electrical performance while maintaining the narrow frame design.
Data Source
AI summary
An array substrate and a display device are disclosed. In the array substrate, the base substrate includes a display region and a bonding region; the display region includes a first region and a second region, and the plurality of first pixel driving circuits are located in the second region, the plurality of first pixel driving circuits are arranged in an array along a first direction and a second direction to form a plurality of first pixel driving columns arranged along the first direction, the first region and the second region are arranged in the first direction, the plurality of first data lines are configured to provide data signals to the plurality of first pixel driving columns, and the plurality of first leads are respectively connected with the plurality of first data lines, and at least partially located in the first region and the second region.