Array Substrate Repair Lines for Display Panel Breakpoints
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Solution Overview
Problem
Existing liquid crystal display array substrates face defects due to breakpoints in data or gate lines, leading to negative display effects, and current repair methods are limited in efficiency and voltage distribution.
Innovation Solution
The array substrate incorporates at least two repair lines with multiple repair voltage leads positioned strategically to intersect with data or gate lines, allowing for increased repair capabilities and efficient voltage introduction, reducing signal attenuation and improving repair success rates.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of repair
If multiple repair lines with multiple repair voltage leads are arranged on the peripheral region, then the number of repairable data or gate lines increases and utilization ratio of repair lines improves, but the device complexity increases
Solution Approach 1:
The repair lines are designed to serve multiple functions: they can repair different data lines and gate lines by selecting appropriate repair voltage leads. Each repair line can be activated through different voltage leads to target different line groups, making the repair system universal and adaptable to various failure scenarios without requiring separate dedicated repair paths for each line.
Solution Approach 2:
The array substrate is divided into multiple line groups, with each group associated with specific repair lines and voltage leads. This segmentation allows the repair system to target specific regions or line groups independently, reducing the overall complexity by breaking down the repair task into manageable segments rather than requiring a monolithic repair approach.
2Reliability
If repair voltage leads are positioned at different sides of repair lines, then voltage distribution efficiency improves and signal attenuation reduces, but the manufacturing precision requirements increase
Solution Approach 1:
Repair voltage leads are positioned at different sides of repair lines based on the specific repair needs of different line groups. Rather than using a uniform positioning scheme, the voltage leads are strategically placed to optimize voltage distribution for each local region, ensuring that the repair voltage is introduced at the most effective location for each specific data or gate line being repaired.
3Ease of repair
If repair lines intersect with data or gate lines in the pixel region, then repair capability increases, but the area of pixel region decreases
Solution Approach 1:
The repair lines are arranged in the peripheral region rather than within the pixel region, utilizing the peripheral space for repair functionality. This dimensional repositioning allows the repair lines to intersect with and service the data and gate lines without encroaching on the active pixel area, thus maintaining full pixel region area while still providing comprehensive repair capability.
Data Source
AI summary
An embodiment of the present disclosure relates to an array substrate, which comprises data lines and gate lines arranged on the array substrate having a pixel region and a peripheral region surrounding the pixel region, and at least two repair lines arranged on the peripheral region of the array substrate. The at least two repair lines intersect with one of the data lines and the gate lines. Each of the repair lines has at least one repair voltage lead. The array substrate according to the present disclosure can increase the number of data lines or gate lines that can be repaired, improve a utilization ratio of the repair lines, and can be used for repairing a display panel with large area.