Display Substrate Hollowed Conductors for Low Voltage Drop
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Solution Overview
Problem
The complex wiring of active matrix Mini-LED display technology leads to increased wire winding length, voltage drop issues, and poor adhesion of metal layers to insulation layers, resulting in high product defect rates.
Innovation Solution
A display substrate design featuring a base substrate with a first conductive layer, a second conductive layer, and an insulation layer, where the first conductive layer includes hollowed-out portions with groove structures that reduce the occupying area and enhance adhesion, while minimizing the overlap area with the second conductive layer to prevent short circuits.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of energy
If the laying width of the metal layer is increased to reduce voltage drop, then the voltage drop is reduced, but the adhesion of the metal layer to the insulation layer deteriorates
Solution Approach 1:
The first conductive layer is segmented by introducing hollowed-out portions that divide the continuous metal layer into multiple sections. This segmentation reduces the overall laying width required for current transmission while maintaining electrical conductivity, thereby preventing adhesion problems between the metal layer and insulation layer while still achieving acceptable voltage drop levels.
Solution Approach 2:
The hollowed-out portions are strategically positioned in specific regions where current density is lower, allowing the metal layer to maintain adequate width in critical current-carrying areas while reducing width in less critical areas. This local optimization maintains adhesion quality in regions where it matters most while still achieving overall voltage drop reduction.
2Loss of energy
If the laying width of the metal layer is increased to reduce voltage drop, then the voltage drop is reduced, but the device complexity increases
Solution Approach 1:
The conductive layer is divided into multiple segments through hollowed-out portions, which allows the wiring to achieve the same electrical function with reduced physical width. This segmentation enables more efficient space utilization and simplifies the overall wiring layout while maintaining adequate current transmission capability.
3Loss of energy
If the metal layer width is increased to reduce voltage drop, then the voltage drop is reduced, but the product defect rate increases
Solution Approach 1:
By segmenting the metal layer through hollowed-out portions, the patent reduces the required metal layer width, which improves adhesion between the metal layer and insulation layer. This reduction in width decreases the likelihood of manufacturing defects such as delamination and separation, thereby lowering the overall product defect rate while maintaining acceptable voltage drop levels.
Data Source
AI summary
A display substrate and a display apparatus are provided. The display substrate includes a base substrate, a first conductive layer, a second conductive layer and an insulation layer. The first conductive layer is on a side of the base substrate and includes a first conductive part extending in a first direction, the second conductive layer is on a side of the first conductive layer facing away from the base substrate, and the insulation layer is located between the first conductive layer and the second conductive layer. At least one first conductive part includes a first hollowed-out portion including a plurality of groove structures distributed in a second direction and extending in the first direction. The first direction and the second direction produce angles.