Display Device Resin Pattern for Selective Protective Coating

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Solution Overview

Problem

The high cost of materials used for forming top protective films in flexible display devices is a challenge due to the need for full coverage during manufacturing processes, which can lead to inefficiencies and increased costs.

Innovation Solution

A method is introduced where the top protective film is selectively coated only on specific areas requiring it, using UV-curable resin patterns, reducing material usage and costs.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If the top protective film is coated on the entire surface during manufacturing, then the display device is protected from scratches and physical damage, but the material cost increases due to full coverage

Engineering Contradiction:
Improveprotection from scratchesVSAvoidmaterial cost
Core Design Contradiction:
ReliabilityVSQuantity of substance

Solution Approach 1:

The patent applies the top protective film selectively only to specific areas where scratches and physical damage are most likely to occur during manufacturing and handling, rather than coating the entire surface. This local application approach maintains protection where needed while reducing material consumption and cost in areas less susceptible to damage.

Inventive Principle:
Principle #3Local quality

Solution Approach 2:

The protective film application is divided into multiple segments or zones based on the manufacturing process requirements. Different areas of the display device are coated separately according to their specific protection needs during transfer and handling operations, allowing for optimized material usage while ensuring adequate protection at critical locations.

Inventive Principle:
Principle #1Segmentation

2Reliability

If the top protective film is coated on the entire surface, then all areas are protected during transfer, but manufacturing efficiency decreases due to unnecessary coating material and process time

Engineering Contradiction:
Improveprotection during transferVSAvoidmanufacturing efficiency
Core Design Contradiction:
ReliabilityVSProductivity

Solution Approach 1:

The patent identifies and protects only the specific areas most vulnerable to damage during transfer operations, such as edges and surfaces exposed during handling. By localizing the protective film application to these critical zones rather than the entire surface, the manufacturing process becomes more efficient with reduced material usage and shorter coating times while maintaining adequate protection.

Inventive Principle:
Principle #3Local quality

Solution Approach 2:

Instead of applying the top protective film to the entire surface (excessive action), the patent applies it partially only to the extent necessary for effective protection during transfer. This partial action approach eliminates unnecessary coating material and process time while ensuring sufficient protection at the most vulnerable locations, thereby improving manufacturing efficiency.

Inventive Principle:
Principle #16Partial or excessive action

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

This approach reduces material costs for forming the top protective film while maintaining the integrity and functionality of the display device, enhancing manufacturing efficiency.

Implementation Method 1

a resin pattern UP which is made of a UV-curable material and is disposed on a touch electrode layer TSP

Methodology Applied
Scientific EffectUV curing: Photopolymerisation

Data Source

PatentUS12405683B2Display device having a resin pattern disposed therein
Publication Date: 2025.09.02 SAMSUNG DISPLAY CO LTD
  • US12405683B2 patent drawing
  • US12405683B2 patent drawing
  • US12405683B2 patent drawing

AI summary

A display device includes, a display panel including a light-emitting element layer disposed on a substrate, a thin-film encapsulation layer disposed on the light-emitting element layer, a touch electrode layer disposed on the thin-film encapsulation layer, a display area, the light-emitting element layer being located in the display area, and a non-display area disposed around the display area, and a resin pattern disposed on and directly contacting the touch electrode layer. The non-display area includes a first non-display area disposed around the display area, and a second non-display area spaced apart from the display area, the first non-display area being disposed between the display area and the second non-display area in a plan view. The resin pattern is disposed in the second non-display area in a plan view.