Array Substrate Dummy Line Masking for Fan-out Visibility
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Solution Overview
Problem
Existing OLED display technologies face challenges in optimizing the arrangement of data lines, fan-out leads, and dummy lines, which affects the display's efficiency and visibility of the fan-out leads.
Innovation Solution
The proposed array substrate design includes a substrate with specific arrangements of data lines, fan-out leads, and dummy lines, where the dummy lines are strategically placed to reduce macroscopic visibility and improve the display's uniformity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If fan-out leads are arranged in the display region to connect data lines, then electrical connection is achieved, but macroscopic visibility of the leads increases affecting display uniformity
Solution Approach 1:
Dummy lines are introduced as intermediary elements that fill the gaps between fan-out leads and other wiring structures. These dummy lines match the appearance and electrical characteristics of functional leads but do not carry signals, effectively masking the visibility of fan-out leads while maintaining proper electrical connections throughout the display region.
Solution Approach 2:
The patent applies different wiring configurations in different regions: in regions where fan-out leads are present, dummy lines are strategically placed to match and mask them; in regions without fan-out leads, normal wiring continues uninterrupted. This localized adaptation ensures uniform appearance across the entire display region while maintaining electrical functionality.
2Object-affected harmful factors
If dummy lines are added to mask fan-out leads, then display uniformity is improved, but device complexity increases
Solution Approach 1:
Dummy lines are designed with electrical parameters (resistance, capacitance, trace width) matched to functional leads, making them indistinguishable in appearance and electrical behavior. This parameter matching allows the dummy lines to effectively mask fan-out leads without requiring complex additional structures or materials.
3Reliability
If data lines and fan-out leads are arranged in specific patterns, then electrical connection is achieved, but arrangement optimization becomes complex
Solution Approach 1:
The display region is divided into multiple sub-regions based on the presence and configuration of fan-out leads. Each sub-region is independently optimized with appropriate dummy line placement, allowing complex overall arrangement to be managed through systematic segmentation and localized optimization rules.
Data Source
AI summary
An array substrate includes a substrate, data lines, fan-out leads, first dummy lines an second dummy lines. A fan-out lead includes a first lead and a second lead. The first lead extends from a lead-out region to a first wiring region. An end of the second lead is electrically connected to the first lead, and another end of the second lead is electrically connected to one data line. The first dummy lines are disposed in first wiring regions and located on a side, away from the lead-out region, of all first leads as a whole. A part of the second dummy lines is located in a second wiring region where no second lead is arranged; and another part of the second dummy lines is located in the second wiring region where the second lead is arranged and is located on at least one side of the second lead.