Second Refractive Layer Wiring Protection Bending Area

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Solution Overview

Problem

Existing display panels require an additional process to form a protective glue layer in the bending area to prevent wiring breakage, leading to increased costs.

Innovation Solution

A display panel design where a second refractive layer extends from the display area to the non-display area and covers the bending area, replacing the need for a protective glue layer by protecting the wirings.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If a protective glue layer is added in the bending area to protect wirings, then wiring reliability is improved, but manufacturing complexity and cost increase due to additional processes

Engineering Contradiction:
Improvewiring reliabilityVSAvoidmanufacturing complexity
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The patent merges the protective function with the existing second refractive layer by extending it into the bending area. This single layer simultaneously performs optical refraction in the display area and mechanical protection of wirings in the bending area, eliminating the need for a separate protective glue layer and reducing manufacturing complexity.

Inventive Principle:
Principle #5Merging (Combining)

Solution Approach 2:

The second refractive layer is designed to serve multiple functions: it provides optical refraction in the display area and acts as a protective layer for wirings in the bending area. This multi-functional design reduces the total number of layers needed while maintaining both optical performance and wiring reliability.

Inventive Principle:
Principle #6Universality (Multi-functionality)

2Reliability

If a protective glue layer is added in the bending area to prevent wiring breakage, then wiring protection is improved, but production cost increases

Engineering Contradiction:
Improvewiring protectionVSAvoidproduction cost
Core Design Contradiction:
ReliabilityVSEase of manufacture

Solution Approach 1:

The protective function is merged into the existing second refractive layer structure. By extending this layer into the bending area, the patent provides wiring protection without requiring additional materials or processes, thereby reducing production costs while maintaining wiring reliability.

Inventive Principle:
Principle #5Merging (Combining)

3Reliability

If the second refractive layer extends to cover the bending area, then wiring protection is achieved, but the structure becomes more complex

Engineering Contradiction:
Improvewiring protectionVSAvoidstructural complexity
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The second refractive layer is designed as a universal structure that performs both optical refraction in the display area and mechanical protection in the bending area. This approach increases structural complexity minimally while achieving multiple functions with a single continuous layer.

Inventive Principle:
Principle #6Universality (Multi-functionality)

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 solution eliminates the need for an additional manufacturing process, thereby reducing production costs while effectively protecting the wirings in the bending area.

Implementation Method 1

a second refractive layer covering a side of the first refractive layer away from the substrate and filling the openings, a refractive index of the second refractive layer is greater than a refractive index of the first refractive layer, and the second refractive layer extends from the display area to the non-display area and covers the bending area

Methodology Applied
Scientific EffectRefraction: Refraction

Data Source

PatentUS12329018B2Display panel
Publication Date: 2025.06.10 WUHAN CHINA STAR OPTOELECTRONICS SEMICONDUCTOR DISPLAY TECHNOLOGY CO LTD
  • US12329018B2 patent drawing
  • US12329018B2 patent drawing
  • US12329018B2 patent drawing

AI summary

The present disclosure provides a display panel, the display panel includes a substrate, a light-emitting layer, a first refractive layer, and a second refractive layer. The first refractive layer is arranged on a side of the light-emitting layer away from the substrate. The second refractive layer covers a side of the first refractive layer away from the substrate and fills a plurality of openings of the first refractive layer. The second refractive layer extends from a display area to a non-display area and covers a bending area to protect wirings in the bending area, and the second refractive layer may replace a protective glue layer in prior art, which is beneficial to saving processes.