Segmented Conductive Layer for HD Display Line Repair
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Solution Overview
Problem
Existing display devices face difficulties in repairing disconnected lines, especially in high-definition liquid crystal display devices where the proximity of lines makes disconnection repair challenging, and the use of laser beams can inadvertently remove both foreign substances and conductive layers, leading to further disconnections.
Innovation Solution
A display device structure featuring adjacent and parallel lines with a conductive layer and an insulation layer, where the conductive layer includes overlapping and connecting portions that allow for electrical connection and repair of disconnected lines, even when foreign materials are removed, maintaining electrical continuity through connecting portions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If laser beams are used to remove foreign substances from lines, then foreign substances can be removed, but the line and conductive layer may be removed causing disconnection
Solution Approach 1:
The conductive layer is divided into multiple separate conductive portions (first conductive portion, second conductive portion, third conductive portion) positioned at different locations. This segmentation allows the system to tolerate localized damage to one portion while maintaining overall electrical connectivity through alternative paths, thus preventing total disconnection when laser removal affects one area.
Solution Approach 2:
Different portions of the conductive layer are positioned to overlap with different regions of the line. The first conductive portion overlaps with the first line, the second with the second line, and the third with both lines. This local quality distribution ensures that even if one portion is damaged, other portions can maintain electrical connection, providing localized redundancy.
2Measurement precision
If lines are formed in duplicate for higher definition pixels, then display definition is improved, but the distance between lines becomes narrow making repair difficult
Solution Approach 1:
The conductive layer acts as an intermediary component that provides alternative electrical pathways between lines. When a line is disconnected due to narrow spacing making direct repair difficult, the conductive layer portions can serve as mediators to restore electrical connectivity without requiring direct manipulation of the tightly spaced lines themselves.
Solution Approach 2:
The conductive layer portions are positioned in a different spatial dimension (overlapping regions between lines) to provide connectivity pathways that are not constrained by the narrow lateral distance between duplicate lines. This dimensional approach allows repair mechanisms to operate in the vertical/overlap dimension rather than being constrained by the narrow horizontal spacing.
3Ease of repair
If conductive layer is arranged below the line for repair, then line disconnection can be repaired, but foreign substance removal may remove the conductive layer causing further disconnection
Solution Approach 1:
The conductive layer is segmented into multiple separate conductive portions distributed at different locations. This segmentation means that the conductive layer has redundant pathways, so even if one portion is removed during foreign substance cleanup, the other portions can maintain the repair function, preventing total loss of repair capability.
Solution Approach 2:
Multiple conductive portions are positioned in advance to provide redundant electrical pathways. This beforehand cushioning ensures that the system has built-in redundancy that can compensate for the potential loss of conductive material during foreign substance removal operations, maintaining repair reliability even after such operations.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Enables effective repair of disconnected lines between pixels by maintaining electrical connection through the conductive layer's connecting portions, reducing the risk of further disconnections and improving the reliability of high-definition display devices.
Implementation Method 1
a conductive layer (30) which is arranged at a position where the conductive layer (30) overlaps with the first line (24) and the second line (26)
Implementation Method 2
an insulation layer (32) which is interposed between the first line (24) and the second line (26) and the conductive layer (30)
Data Source
AI summary
A display device includes: a first line and a second line which are arranged adjacent to and parallel to each other in a spaced-apart manner; a conductive layer which is arranged at a position where the conductive layer overlaps with the first line and the second line; and an insulation layer which is interposed between the first and second lines and the conducive layer. Here, the conductive layer includes a first overlapping portion which overlaps with the first line, a second overlapping portion which overlaps with the second line, and a connecting portion which connects the first overlapping portion and the second overlapping portion between the first overlapping portion and the second overlapping portion.