Foldable Display Bending Area Antistatic Grounding Structure

Resolve Bottlenecks,
Find Innovative SolutionsGenerate Solutions

Solution Overview

Problem

Foldable display devices are susceptible to electric impacts due to external static electricity introduced through the space between the cover window and the housing during bending operations.

Innovation Solution

Incorporation of an antistatic member made of the same material as the touch electrodes, disposed in the bending area to dissipate static electricity to a ground terminal, minimizing electrical interference.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If the cover window is separated from the housing during bending operation, then the foldable operation is enabled, but external static electricity can introduce into the device through the space between cover window and housing

Engineering Contradiction:

Improvefoldable operationVSAvoidexternal static electricity

Core Design Contradiction:

Adaptability or versatilityVSObject-affected harmful factors

Solution Approach 1:

An antistatic member is introduced as an intermediary component between the cover window and housing. This member includes a bending area that generates static electricity during folding operations, and a pad area that dissipates the generated static electricity to the housing, preventing external static electricity from affecting internal components

Inventive Principle:

Principle #24Intermediary (Mediator)

Solution Approach 2:

The patent converts the harmful effect of static electricity accumulation into a beneficial dissipation mechanism. The antistatic member deliberately generates static electricity in its bending area during folding, which is then safely dissipated through its pad area to the housing, preventing more harmful external static electricity from affecting the device

Inventive Principle:

Principle #22Blessing in disguise (Convert harm into benefit)

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

Prevents or minimizes electric impacts by effectively grounding external static electricity, protecting the internal components of the foldable display device.

Implementation Method 1

an antistatic member disposed in the bending area and including the same material as the touch electrodes

Methodology Applied

Scientific EffectElectrical conduction: Conduction (electrical)

Data Source

PatentUS20260080809A1Foldable display device

Publication Date: 2026.03.19 LG DISPLAY CO LTD

AI summary

A foldable display device includes a substrate including a display area including a folding area and a non-display area surrounding the display area and including a bending area and a pad area; a pixel circuit unit disposed on the substrate in the display area; an encapsulation portion disposed on the pixel circuit unit; a touch sensing unit disposed on the encapsulation portion and including touch electrodes; a plurality of lines disposed on the bending area; and an antistatic member disposed in the bending area and including the same material as the touch electrodes.