Display Shielding Film Segmented Transparency Control

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Solution Overview

Problem

Current display devices face challenges in manufacturing efficiency and flexibility, particularly in controlling transparency and opacity for improved visibility and functionality.

Innovation Solution

A display device incorporating a shielding film with independently controllable transparency areas, utilizing a conductive layer and discoloration layer with liquid crystal elements, and a back cover for enhanced visibility and functionality, allowing for dynamic control of transparency and opacity based on control signals.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If a shielding film with independently controllable transparency areas is used, then visibility and functionality are improved, but device complexity increases

Engineering Contradiction:
Improvevisibility controlVSAvoidshielding film structure
Core Design Contradiction:
Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The shielding film is divided into multiple independently controllable areas with separate conductive layers and partition portions, allowing each area to be controlled individually for enhanced visibility and functionality

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The shielding film transitions from a static structure to a dynamic one where transparency and opacity can be changed in real-time through electrical signals applied to different areas, enabling adaptive visibility control

Inventive Principle:
Principle #15Dynamics

2Ease of operation

If partition portions are added to divide conductive layers into multiple areas, then transparency control is improved, but manufacturing complexity increases

Engineering Contradiction:
Improvetransparency controlVSAvoidshielding film fabrication
Core Design Contradiction:
Ease of operationVSEase of manufacture

Solution Approach 1:

The conductive layers are segmented into multiple areas by non-conductive partition portions, enabling independent control of transparency in different regions while maintaining a systematic manufacturing approach

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

Non-conductive partition portions serve as intermediary elements that divide the conductive layers into separate controllable areas, facilitating transparency control without requiring complex direct connections

Inventive Principle:
Principle #24Intermediary (Mediator)

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 easier manufacturing and improved visibility by dynamically controlling transparency and opacity, enhancing the display device's functionality and user experience.

Implementation Method 1

The discoloration layer may be changed from a transparent state to an opaque state in response to a control signal applied to at least one of the first and second conductive layers

Methodology Applied
Scientific EffectElectrochromism: Electrochromism

Implementation Method 2

The discoloration layer may include a plurality of liquid crystal elements

Methodology Applied
Scientific EffectLiquid Crystals: Liquid Crystals

Data Source

PatentEP3156842B1Display device
Publication Date: 2018.06.13 LG ELECTRONICS INC
  • EP3156842B1 patent drawingFigure 1
  • EP3156842B1 patent drawingFigure 2
  • EP3156842B1 patent drawingFigure 3a

AI summary

A display device includes a display panel (100), a shielding film (150) positioned at at least a portion of a back surface of the display panel, and a back cover (200) positioned at a back surface of the shielding film. The shielding film includes a plurality of areas, of which transparencies are independently controlled. The shielding film includes a first state and a second state, in which, in the first state, at least a portion of the shielding film is transparent, and in the second state, the at least a portion of the shielding film is opaque.