Flexible Display Panel Layer Structure for Impact Resistance

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Solution Overview

Problem

Existing display panels lack sufficient impact resistance, which is crucial for flexible display devices that are prone to damage from external forces.

Innovation Solution

A display panel design featuring a base layer with a boundary region and pixel region, insulating layers with openings, a first organic layer, and conductive lines extending in the same direction as the boundary region, connected to a pixel circuit, enhancing structural integrity and impact resistance.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Strength

If the display panel uses a continuous inorganic layer structure, then the manufacturing process is simpler, but the impact resistance is insufficient

Engineering Contradiction:

Improveimpact resistanceVSAvoidlayer structure complexity

Core Design Contradiction:

StrengthVSDevice complexity

Solution Approach 1:

The inorganic layer is divided into multiple separate inorganic layers (first inorganic layer, second inorganic layer, third inorganic layer) with organic layers in between, creating a segmented structure that improves impact resistance by preventing crack propagation across the entire display panel

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The patent uses a composite structure combining inorganic layers (for hardness and scratch resistance) with organic layers (for flexibility and impact absorption), creating a multi-material system that leverages the advantages of each material type to achieve both durability and flexibility

Inventive Principle:

Principle #40Composite materials

2Adaptability or versatility

If the display panel uses a flexible base layer, then the adaptability for various form factors is improved, but the reliability under impact is reduced

Engineering Contradiction:

ImproveflexibilityVSAvoidimpact resistance

Core Design Contradiction:

Adaptability or versatilityVSReliability

Solution Approach 1:

The patent applies different material properties to different regions and layers: the base layer maintains flexibility while the inorganic layers provide localized hardness and impact resistance, creating a structure where each layer performs its specialized function

Inventive Principle:

Principle #3Local quality

Solution Approach 2:

The organic layers are positioned between the inorganic layers to act as cushioning elements that absorb impact energy before it reaches the flexible base layer, providing preemptive protection against impact damage

Inventive Principle:

Principle #11Beforehand cushioning (Prior cushioning)

Data Source

PatentUS12543455B2Display panel

Publication Date: 2026.02.03 SAMSUNG DISPLAY CO LTD

AI summary

Provided is a display device including a first pixel and a second pixel. The light-emitting element and driving circuit of the second pixel are disposed in a second region. The first pixel includes a silicon transistor and an oxide transistor which are disposed in the second region. The first pixel includes a connection line configured to electrically connect one of the transistors and the light-emitting element disposed in a first region. The connection line is disposed in the same layer as an oxide semiconductor pattern and includes a transparent conductive oxide.