Display Panel Optical Layer Layout for Reflection and Crosstalk

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Solution Overview

Problem

Existing display panels face challenges in enhancing display effects, particularly in reducing reflection and crosstalk between pixels, while improving light utilization and consistency.

Innovation Solution

A display panel design incorporating a substrate, an array layer, and light-emitting devices, with an optical layer positioned on the side of the array layer away from the substrate, arranged corresponding to intervals between light-emitting devices. The optical layer, composed of materials with low light transmittance, includes a combination of ink and adhesive layers or films, strategically stacked to reduce reflection and enhance light utilization.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Object-affected harmful factors

If an optical layer is added to reduce reflection and crosstalk, then display quality improves, but device structure becomes more complex

Engineering Contradiction:
Improvereflection and crosstalkVSAvoidstructure
Core Design Contradiction:
Object-affected harmful factorsVSDevice complexity

Solution Approach 1:

An optical layer comprising ink and adhesive layers is introduced as an intermediary component between the substrate and the display elements. This optical layer serves as a mediator that reduces reflection and crosstalk by absorbing stray light, thereby improving display quality without requiring fundamental changes to the core display structure

Inventive Principle:
Principle #24Intermediary (Mediator)

Solution Approach 2:

The optical layer is constructed using composite materials, specifically combining ink layers (which provide light absorption properties) with adhesive layers (which provide structural bonding). This composite structure achieves the dual function of reducing optical interference while maintaining structural integrity, resolving the contradiction between performance improvement and structural simplicity

Inventive Principle:
Principle #40Composite materials

2Manufacturing precision

If light-emitting devices are positioned closer together to increase pixel density, then resolution improves, but crosstalk between pixels increases

Engineering Contradiction:
Improvepixel densityVSAvoidcrosstalk
Core Design Contradiction:
Manufacturing precisionVSObject-generated harmful factors

Solution Approach 1:

The adhesive layers within the optical layer are designed to perform dual functions: they provide structural bonding while simultaneously absorbing stray light that would otherwise cause crosstalk. By converting the potentially harmful stray light into absorbed energy, the system allows for closer pixel positioning without sacrificing display quality

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

Solution Approach 2:

The optical layer is strategically positioned and configured to provide localized light absorption precisely where needed - in the regions between adjacent light-emitting devices. This localized approach targets the specific problem areas of crosstalk without affecting the overall pixel density or requiring changes to the light-emitting device structure

Inventive Principle:
Principle #3Local quality

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

The design effectively reduces reflection and crosstalk, improves light utilization, and enhances the overall light-emitting effect by strategically positioning and structuring the optical layer to manage light distribution and absorption.

Implementation Method 1

The optical layer, composed of materials with low light transmittance, includes a combination of ink and adhesive layers or films, strategically stacked to reduce reflection and enhance light utilization

Methodology Applied
Scientific EffectLight absorption: Absorption (EM radiation)

Data Source

PatentUS20230317697A1Display panel and display device
Publication Date: 2023.10.05 SHANGHAI TIANMA MICRO ELECTRONICS CO LTD
  • US20230317697A1 patent drawing
  • US20230317697A1 patent drawing
  • US20230317697A1 patent drawing

AI summary

A display panel includes a substrate, an array layer, an optical layer, and a plurality of light-emitting devices. The array layer is on the substrate. The optical layer and the plurality of light-emitting devices are located on a side of the array layer away from the substrate. The optical layer is arranged corresponding to intervals between light-emitting devices of the plurality of light-emitting devices.