Display Backplane Wiring Layout to Prevent Cutting Short Circuits
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
The challenge of producing large-sized display devices is compounded by the risk of abnormal short-circuiting due to line connections during the cutting of substrates, particularly when cutting adjacent metal line layers, leading to abnormal display issues.
Innovation Solution
A display backplane design featuring a wiring layer with first-type and second-type wirings arranged perpendicular to each other, where the end surfaces are non-overlapping, and an insulating layer with via holes connects these wirings, ensuring that cutting lines avoid overlapping different types of wires, thereby preventing simultaneous cutting and reducing the risk of short-circuiting.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Length of stationary object
If multiple splicing screens are used to produce large-sized display devices, then the display size can be increased, but the risk of abnormal short-circuiting increases due to line connections during cutting
Solution Approach 1:
The patent segments the wiring into different types (first-type wirings and second-type wirings) with different orientations. First-type wirings extend in the first direction while second-type wirings extend in the second direction perpendicular to the first direction. This segmentation allows cutting lines to be positioned between different wiring types, preventing simultaneous cutting of multiple wiring layers and reducing short-circuit risk in large-sized spliced display devices
Solution Approach 2:
The patent introduces a dimensional arrangement by orienting wirings in perpendicular directions (first direction and second direction). By arranging first-type wirings along the first direction and second-type wirings along the second direction, the design creates a two-dimensional wiring layout that allows cutting lines to pass through regions with only one wiring type at a time, thus preventing short-circuits during the cutting process
2Ease of manufacture
If cutting is performed adjacent to metal line layers, then the display backplane can be separated into splicing screens, but abnormal short-circuits occur due to line connections
Solution Approach 1:
The patent applies local quality by creating specific regions with different wiring characteristics. First-type wirings are positioned in certain regions extending in the first direction, while second-type wirings are positioned in other regions extending in the second direction. This local differentiation allows cutting lines to be routed through regions with only one wiring type, preventing short-circuits while maintaining ease of manufacture for splicing screen separation
Solution Approach 2:
The patent introduces an intermediary arrangement by positioning insulating layers and via holes between different wiring types. The insulating layer separates first-type and second-type wirings, and via holes provide controlled connections. This intermediary structure allows the cutting process to proceed easily while preventing direct contact between adjacent metal line layers that could cause short-circuits
3Quantity of substance
If different types of wirings are arranged overlapping in top view, then wiring density increases, but cutting may simultaneously cut different wirings causing short-circuits
Solution Approach 1:
The patent resolves the contradiction by utilizing the third dimension (vertical layering) to accommodate different wiring types. Instead of arranging first-type and second-type wirings overlapping in the top view plane, the patent positions them in different vertical layers separated by insulating layers. This dimensional transition allows both wiring types to coexist with high density while preventing simultaneous cutting, as cutting lines can be positioned to intersect only one wiring type at any given location
Data Source
AI summary
A display backplane and a display device are provided. The display backplane includes a wiring layer. The wiring layer includes a plurality of first-type wirings arranged along a first direction and a plurality of second-type wirings arranged along a second direction. At least one of the first-type wirings includes a first end surface flush with an edge of the display backplane. At least one of the second-type wirings includes a second end surface flush with the edge of the display backplane. In a top view direction of the display backplane, the first end surface and the second end surface are arranged non-overlapping.