OLED Array Substrate Single-Side Scan Line Routing
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Solution Overview
Problem
Conventional OLED display modules occupy additional space on both sides due to scan lines, leading to wider non-emissive regions and degraded display effects.
Innovation Solution
An array substrate with N rows of scan lines and M columns of data lines, where N columns of leading wires are electrically connected to the scan lines and led out in parallel to the data lines, allowing the scan and signal driving chips to be positioned on the same side without occupying extra space, thereby narrowing the display frame.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If scan lines are led from two sides of the OLED display respectively, then the display array can be driven properly, but wider non-emissive regions are formed on the two sides, degrading display effects
Solution Approach 1:
The patent merges the previously separate scan line inputs from two sides into a single-sided input structure. By combining the leading wires and data lines into one edge of the display array, the non-emissive region is consolidated to one side only, reducing the total area occupied by non-emissive regions while maintaining proper display driving function.
Solution Approach 2:
The patent reorganizes the spatial arrangement of conductive lines by changing their routing dimension. Instead of extending scan lines horizontally from both left and right edges, the leading wires and data lines are routed vertically from a single edge, utilizing the vertical dimension for line routing and thereby eliminating the need for wide horizontal non-emissive regions on both sides.
2Ease of manufacture
If leading wires and data lines are arranged in the same layer, then the structure is simplified and manufacturing is easier, but line crossing and signal interference may occur
Solution Approach 1:
The patent introduces an intermediary insulating layer between the leading wires and data lines that are arranged in the same layer. This insulating layer acts as a mediator that prevents direct electrical contact and signal interference between the conductive lines, while still allowing them to be fabricated in the same structural layer, thus maintaining manufacturing simplicity without compromising signal integrity.
Data Source
AI summary
The present disclosure provides an array substrate, a method of producing the same and a display apparatus. The array substrate comprises: N rows of scan lines, N being a natural number; M columns of data lines, which are arranged to cross with the N rows of scan lines, M being a natural number; a display array comprising N×M pixel units defined by the N rows of scan lines and the M columns of data lines; and N columns of leading wires electrically connected to the N rows of scan lines respectively and led out in parallel to the M columns of data lines. It may narrow the frame of the display apparatus.