LED Display Panel Groove Structure for Narrow-Frame Corrosion Protection

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Solution Overview

Problem

LED display panels face issues with corrosion of the VSR devices due to exposure to water and oxygen, especially when the encapsulation layer is omitted to achieve a narrower frame, which compromises the structural integrity and lifetime.

Innovation Solution

Incorporating grooves in the insulating layer between the edge of the display panel and the driving device, and/or between the light-emitting device and the driving device, to create a protective barrier against water and oxygen ingress, ensuring a safe minimum distance and enhancing the structural stability of the panel.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Length of stationary object

If the encapsulation layer is removed to allow for a narrower frame, then the frame width is reduced and the display panel is thinner, but the VSR devices become more susceptible to corrosion from ambient water and oxygen

Engineering Contradiction:
Improveframe widthVSAvoidcorrosion resistance of VSR devices
Core Design Contradiction:
Length of stationary objectVSReliability

Solution Approach 1:

The insulating layer is segmented by introducing grooves that divide it into multiple regions. These grooves create a pinning structure that segments the path of water and oxygen, preventing them from reaching the VSR devices while maintaining a narrow frame width.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The grooves in the insulating layer act as intermediary protective structures between the ambient environment and the VSR devices. They create a physical barrier that mediates the interaction between water/oxygen and the sensitive electronic components, preventing direct contact and corrosion.

Inventive Principle:
Principle #24Intermediary (Mediator)

2Length of stationary object

If the encapsulation layer is removed to allow for a narrower frame, then the frame width is reduced, but the structural stability and protection against environmental factors are compromised

Engineering Contradiction:
Improveframe widthVSAvoidstructural stability against corrosion
Core Design Contradiction:
Length of stationary objectVSStability of the object's composition

Solution Approach 1:

The insulating layer is segmented by introducing grooves that divide it into multiple regions. These grooves create a pinning structure that segments the path of water and oxygen, preventing them from reaching the VSR devices while maintaining a narrow frame width.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The insulating layer with grooves functions as a thin film protective structure that provides corrosion resistance without requiring a thick encapsulation layer. This enables a narrower frame while maintaining protection against environmental factors.

Inventive Principle:
Principle #30Flexible shells and thin films

3Reliability

If the encapsulation layer is used to protect against corrosion, then the corrosion resistance is improved, but the frame width increases and the display panel becomes thicker

Engineering Contradiction:
Improvecorrosion resistance of VSR devicesVSAvoidframe width
Core Design Contradiction:
ReliabilityVSLength of stationary object

Solution Approach 1:

The insulating layer is segmented by introducing grooves that divide it into multiple regions. These grooves create a pinning structure that segments the path of water and oxygen, preventing them from reaching the VSR devices while maintaining a narrow frame width.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The insulating layer with grooves functions as a thin film protective structure that provides corrosion resistance without requiring a thick encapsulation layer. This enables a narrower frame while maintaining protection against environmental factors.

Inventive Principle:
Principle #30Flexible shells and thin films

4Length of stationary object

If the encapsulation layer is removed to allow for a narrower frame, then the frame width is reduced, but the service lifetime is reduced due to increased corrosion susceptibility

Engineering Contradiction:
Improveframe widthVSAvoidservice lifetime of display panel
Core Design Contradiction:
Length of stationary objectVSDuration of action of stationary object

Solution Approach 1:

The insulating layer is segmented by introducing grooves that divide it into multiple regions. These grooves create a pinning structure that segments the path of water and oxygen, preventing them from reaching the VSR devices while maintaining a narrow frame width.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The grooves in the insulating layer act as intermediary protective structures between the ambient environment and the VSR devices. They create a physical barrier that mediates the interaction between water/oxygen and the sensitive electronic components, preventing direct contact and corrosion.

Inventive Principle:
Principle #24Intermediary (Mediator)

Data Source

PatentUS12604761B2LED display panel and display device with groove in non-display region
Publication Date: 2026.04.14 SHANGHAI TIANMA MICRO ELECTRONICS CO LTD
  • US12604761B2 patent drawing
  • US12604761B2 patent drawing
  • US12604761B2 patent drawing

AI summary

A light-emitting diode (LED) display panel and a display device are provided. The LED display panel includes a substrate, an array layer at a side of the substrate, and a light-emitting device at a side of the array layer away from the substrate. The array layer includes an insulating layer and a driving device; the insulating layer includes a groove; the groove is between an edge of the display panel and the driving device; and/or the groove is between the light-emitting device and the driving device.