Display Panel Electrode Necking Structure to Reduce Discharge

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Solution Overview

Problem

Existing display panels face challenges in maintaining stable and high-quality display due to discharge phenomena between conductive components, particularly in regions with narrow necking portions, leading to potential damage and connectivity issues.

Innovation Solution

The introduction of a spacer positioned to overlap and increase the distance between the cathode and common electrode layers at necking regions, reducing discharge occurrences and enhancing structural stability by maintaining adequate spacing.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If the spacing between the cathode layer and common electrode layer is increased, then discharge phenomena are reduced, but the device complexity increases due to additional spacer configuration

Engineering Contradiction:

Improvedisplay quality stabilityVSAvoidelectrode layer configuration

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

A spacer layer is introduced as an intermediary component between the cathode layer and common electrode layer. This spacer increases the physical spacing distance, reducing discharge phenomena and improving display stability without requiring fundamental changes to the electrode structure.

Inventive Principle:

Principle #24Intermediary (Mediator)

Solution Approach 2:

The electrode assembly is segmented into distinct functional layers with the spacer creating a physical division between the cathode and common electrode. This segmentation allows independent optimization of each layer's position and function, reducing harmful interactions.

Inventive Principle:

Principle #1Segmentation

2Reliability

If the spacing distance between electrodes is increased to prevent discharge, then the necking region is protected from damage, but the area occupied by the electrode structure increases

Engineering Contradiction:

Improvenecking region durabilityVSAvoidelectrode structure area

Core Design Contradiction:

ReliabilityVSArea of stationary object

Solution Approach 1:

The spacer is strategically positioned to provide localized spacing enhancement specifically at the necking region where discharge damage is most critical. This local quality improvement protects the vulnerable area without requiring uniform spacing increases across the entire electrode structure.

Inventive Principle:

Principle #3Local quality

Data Source

PatentUS12632134B2Electronic device

Publication Date: 2026.05.19 INNOLUX CORP

AI summary

The disclosure provides a display panel including a substrate, a first electrode layer, a second electrode layer, and a spacer. The first electrode layer is located on the active layer, and the first electrode layer includes a first gate and a second gate. The second electrode layer is located on the substrate. The second electrode layer has first portion overlapping the first gate, a second portion overlapping the second gate, and a first necking portion connecting the first portion of the second electrode layer and the second portion of the second electrode layer. The spacer overlaps the first necking portion of the second electrode layer.