Display Substrate Repair Using Overlapping Connection Lines
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
When a large-size display substrate is cut to form a small-size display substrate, the initial voltage line is often cut, leading to malfunction due to its extension from the driver IC side, disrupting the normal operation of the resulting display substrate.
Innovation Solution
The display substrate design includes a driving module with N driving circuits connected in series, featuring connection lines that overlap with the initial voltage line and input cascade lines, allowing for electrical connection through different layers, enabling repair by welding or other means to maintain functionality after cutting.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a large-size display substrate is cut to form a small-size display substrate, then the display size can be adjusted to meet different application needs, but the initial voltage line will be cut, causing the display substrate to malfunction
Solution Approach 1:
The patent introduces a connection line that extends in a direction intersecting with the initial voltage line, creating an overlapping region in the planar view. This spatial arrangement in another dimension allows the connection line to bridge across the cut location, maintaining electrical continuity of the initial voltage line after the substrate is cut to different sizes.
Solution Approach 2:
The connection line acts as an intermediary element that mediates between the initial voltage line and the driving circuits. It provides an alternative electrical pathway that bypasses the cut location, ensuring that the initial voltage can still reach the driving circuits even when the original initial voltage line is severed by cutting.
2Reliability
If the initial voltage line extends from the driver IC side to maintain normal operation, then the voltage supply is stable, but the line is vulnerable to being cut during size reduction
Solution Approach 1:
The connection line is pre-configured to overlap with the initial voltage line in the overlapping region before any cutting occurs. This preliminary spatial arrangement ensures that when cutting happens, the connection line is already positioned to bridge the gap, providing a pre-established backup pathway that activates automatically upon cutting.
Solution Approach 2:
The overlapping region between the connection line and initial voltage line serves as a cushioning measure against the harmful effect of cutting. By having the connection line extend into the overlapping region, the design anticipates potential cutting damage and provides a protective alternative pathway that compensates for the vulnerability of the initial voltage line.
3Ease of repair
If connection lines are added to overlap with initial voltage lines for repair capability, then the substrate can be cut and reconnected, but the device structure becomes more complex
Solution Approach 1:
The connection line serves multiple functions: it acts as a normal signal transmission line during regular operation, and simultaneously serves as a repair pathway when the initial voltage line is cut. This multi-functionality reduces the need for separate dedicated repair structures, thereby limiting the increase in device complexity while achieving repair capability.
Solution Approach 2:
The patent merges the function of the connection line with the function of the initial voltage line by making them overlap in space. Instead of creating a completely separate repair structure, the connection line is integrated into the existing voltage line architecture, combining the roles of normal operation and repair functionality into a unified structure.
Data Source
AI summary
A driving module includes N driving circuits connected in series; the driving circuit includes an input terminal; N is a positive integer; input terminals of first a stages of driving circuits included in the driving module are electrically connected to an initial voltage line; a is a positive integer; an input terminal of an nth stage of driving circuit included in the driving module is electrically connected to an output terminal of an (n−m)th stage of driving circuit included in the driving module through an input cascade line; n and m are positive integers, and m is less than n; the driving module further includes at least one connection line, there is an overlapping portion between an orthographic projection of the connection line on the base substrate and an orthographic projection of the initial voltage line on the base substrate.