Shield Electrode Segmentation for Display Film Peeling Prevention

Solution Overview

Problem

In display devices, the provision of a shield electrode over an organic insulating film in the peripheral region can lead to film peeling due to water ingress into the organic insulating film.

Innovation Solution

An electronic apparatus is designed with a substrate featuring a display region with curved line parts and a peripheral region. A first shield layer is provided above the organic insulating film near the curved line parts, covering the signal-line coupling circuit, wires, and signal lines, and is equipped with a plurality of openings. A second shield layer covers these openings to prevent water ingress and shield electric fields.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If a shield electrode is provided over an organic insulating film in a peripheral region, then electric field shielding is improved, but film peeling occurs due to water ingress into the organic insulating film

Engineering Contradiction:

Improveelectric field shieldingVSAvoidfilm peeling

Core Design Contradiction:

ReliabilityVSStability of the object's composition

Solution Approach 1:

The shield electrode is divided into a first shield electrode and a second shield electrode separated by a gap. The first shield electrode is positioned over the organic insulating film while the second shield electrode is positioned away from it. This segmentation allows the shield electrode to provide electric field shielding functionality while the gap prevents direct contact with water that could cause film peeling.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

An inorganic insulating film is introduced as an intermediary layer between the organic insulating film and the first shield electrode. This inorganic insulating film serves as a barrier that prevents water from penetrating into the organic insulating film, thereby preventing film peeling while still allowing the shield electrode to function effectively.

Inventive Principle:

Principle #24Intermediary (Mediator)

2Reliability

If a shield electrode is provided over an organic insulating film, then shielding performance is improved, but water ingress causes harmful effects

Engineering Contradiction:

Improveshielding performanceVSAvoidwater ingress

Core Design Contradiction:

ReliabilityVSObject-affected harmful factors

Solution Approach 1:

An inorganic insulating film is introduced as an intermediary layer between the organic insulating film and the first shield electrode. This inorganic insulating film serves as a barrier that prevents water from penetrating into the organic insulating film, thereby preventing film peeling while still allowing the shield electrode to function effectively.

Inventive Principle:

Principle #24Intermediary (Mediator)

Solution Approach 2:

The shield electrode is divided into a first shield electrode and a second shield electrode separated by a gap. The first shield electrode is positioned over the organic insulating film while the second shield electrode is positioned away from it. This segmentation allows the shield electrode to provide electric field shielding functionality while the gap prevents direct contact with water that could cause film peeling.

Inventive Principle:

Principle #1Segmentation

Data Source

PatentUS12292662B2Electronic apparatus

Publication Date: 2025.05.06 MAGNOLIA WHITE CORP

AI summary

An electronic apparatus includes a substrate, a first region in which a plurality of pixels are provided on the substrate and that has a first side, a second side, a third side, a fourth side, and a plurality of curved line parts, and a second region positioned between an end part of the substrate and the first region.