Light Emitting Module With Ferromagnetic And Diamagnetic Electrodes

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Solution Overview

Problem

Current liquid crystal display devices face challenges in implementing large high-definition displays due to yield and cost issues, particularly in achieving high color purity and wide color reproduction with existing light emitting diode (LED) technologies.

Innovation Solution

A light emitting module and display device design incorporating ferromagnetic and diamagnetic materials for electrodes and lead electrodes, allowing for the arrangement of light emitting diodes with ferromagnetic and diamagnetic properties to improve productivity, yield, and color reproduction by simplifying the configuration and reducing the complexity of the driving circuit.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Manufacturing precision

If conventional LED technologies are used in liquid crystal display devices, then the display can be implemented, but the color purity and wide color reproduction are difficult to achieve with high definition and large display sizes

Engineering Contradiction:
Improvecolor purityVSAvoiddisplay size
Core Design Contradiction:
Manufacturing precisionVSArea of stationary object

Solution Approach 1:

The patent segments the display into multiple pixel regions, with each pixel region containing multiple sub-pixels that emit different colors (red, green, blue). This segmentation allows for precise control of color emission at each sub-pixel level, achieving high color purity while scaling to large display sizes. The modular pixel structure enables consistent color reproduction across the entire large display area.

Inventive Principle:
Principle #1Segmentation

2Manufacturing precision

If complicated configuration is used to achieve high definition display, then color reproduction may be improved, but yield and cost increase

Engineering Contradiction:
Improvecolor reproductionVSAvoidyield
Core Design Contradiction:
Manufacturing precisionVSProductivity

Solution Approach 1:

The patent changes the magnetic parameters of electrode materials by using ferromagnetic materials for first electrodes and diamagnetic materials for second electrodes. This parameter change enables magnetic field-based alignment and bonding of LED components, simplifying the manufacturing process and improving yield while maintaining high color reproduction quality through precise component positioning.

Inventive Principle:
Principle #35Parameter changes

3Manufacturing precision

If conventional electrode materials are used in light emitting devices, then manufacturing is simpler, but color purity and color reproduction are compromised

Engineering Contradiction:
Improvecolor purityVSAvoidelectrode material complexity
Core Design Contradiction:
Manufacturing precisionVSEase of manufacture

Solution Approach 1:

The patent employs composite electrode structures where first electrodes are made of ferromagnetic materials and second electrodes are made of diamagnetic materials. This composite material approach enables precise magnetic field control for aligning and bonding light emitting devices, achieving high color purity through accurate positioning while the magnetic properties facilitate automated manufacturing processes.

Inventive Principle:
Principle #40Composite materials

4Productivity

If ferromagnetic and diamagnetic materials are used in electrodes and lead electrodes, then productivity and yield improve, but device complexity increases

Engineering Contradiction:
ImproveproductivityVSAvoidmaterial complexity
Core Design Contradiction:
ProductivityVSDevice complexity

Solution Approach 1:

The ferromagnetic and diamagnetic materials in the electrodes provide self-aligning and self-bonding functions through magnetic field interactions. The first ferromagnetic electrode and second diamagnetic electrode automatically align and bond to corresponding lead electrodes during manufacturing, eliminating the need for complex external alignment equipment and simplifying the overall manufacturing process despite the specialized materials used.

Inventive Principle:
Principle #25Self-service

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 solution enables the creation of high-resolution, high-luminance displays with improved color purity and reproducibility, reducing the time and complexity of arranging and bonding light emitting diodes, and allowing for the implementation of large display devices with reduced power consumption and maintenance costs.

Implementation Method 1

the first electrode facing the first lead electrode and including a ferromagnetism material and a second electrode facing the second lead electrode and including a diamagnetism material

Methodology Applied
Scientific EffectFerromagnetism: Ferromagnetism

Implementation Method 2

the second electrode facing the second lead electrode and including a diamagnetism material, wherein the second lead electrode includes a diamagnetism material

Methodology Applied
Scientific EffectDiamagnetism: Diamagnetism

Data Source

PatentUS10811567B2Light emitting module and a display device
Publication Date: 2020.10.20 LG INNOTEK CO LTD
  • US10811567B2 patent drawing
  • US10811567B2 patent drawing
  • US10811567B2 patent drawing

AI summary

Embodiments is disclosed a light emitting module and a display device. The light emitting module includes, a substrate, a first lead electrode and a second lead electrode disposed on the substrate and electrically separated from each other; and at least one light emitting device disposed on the substrate, wherein the light emitting device includes a first electrode facing the first lead electrode and including a ferromagnetism material and a second electrode facing the second lead electrode and including a diamagnetism material, wherein the second lead electrode includes a diamagnetism material, and wherein the first lead electrode comprises a ferromagnetism material.