Flexible Display Frame Layout for Thin Device Rigidity and Shielding

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Solution Overview

Problem

Portable electronic devices with large screen displays face challenges in securing rigidity and experiencing interference between components due to limited space and thinner designs, leading to potential damage and performance issues.

Innovation Solution

A dual frame structure comprising a shutter frame, middle frame, and back cover with specific mounting portions and a flexible substrate configuration that separates and shields components, reducing physical and electrical interference while enhancing rigidity.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Length of moving object

If the display device becomes thinner to reduce thickness, then the device becomes more portable and compact, but it is difficult to secure rigidity and components are more vulnerable to impact

Engineering Contradiction:
ImprovethicknessVSAvoidrigidity
Core Design Contradiction:
Length of moving objectVSStrength

Solution Approach 1:

The frame structure is divided into multiple segments: a first frame extending along the first direction, a second frame extending along the second direction, and a third frame extending along the third direction. This segmentation allows each frame to provide structural support in different orientations, collectively maintaining rigidity even when the overall device thickness is reduced.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The frame structure applies local quality by positioning frames at specific locations where structural support is needed. The first frame is located at a first position, the second frame at a second position, and the third frame at a third position, creating localized reinforcement points that maintain overall rigidity without increasing global thickness.

Inventive Principle:
Principle #3Local quality

2Area of moving object

If the display device has a large screen display to maximize display area, then the usable area is increased, but there is not enough space for other components to be mounted

Engineering Contradiction:
Improvedisplay areaVSAvoidcomponent mounting space
Core Design Contradiction:
Area of moving objectVSArea of stationary object

Solution Approach 1:

The patent transitions from a planar arrangement of components to a three-dimensional configuration. By extending frames along multiple directions (first, second, and third directions) and positioning components at different spatial locations, the design creates vertical and depth-based mounting spaces in addition to horizontal area, effectively utilizing three-dimensional space to accommodate components alongside the large display.

Inventive Principle:
Principle #17Another dimension (Dimensionality change)

3Area of stationary object

If components are mounted close together to maximize space utilization, then the device remains compact, but interference between components increases

Engineering Contradiction:
Improvespace utilizationVSAvoidcomponent interference
Core Design Contradiction:
Area of stationary objectVSObject-generated harmful factors

Solution Approach 1:

The frame structure serves as an intermediary element between components. By positioning frames at intermediate locations (first position, second position, third position) and using them for mounting components, the frame creates spatial separation and physical barriers that reduce direct interference between adjacent components while still allowing compact overall design.

Inventive Principle:
Principle #24Intermediary (Mediator)

Data Source

PatentUS12610479B2Portable electronic device
Publication Date: 2026.04.21 LG ELECTRONICS INC
  • US12610479B2 patent drawing
  • US12610479B2 patent drawing
  • US12610479B2 patent drawing

AI summary

Disclosed is a portable electronic device including a flexible display, a shutter frame arranged on a back surface of the flexible display, a middle frame arranged on a back surface of the shutter frame, a sub-board connected to an end of the flexible display via a flexible substrate and arranged between the shutter frame and the middle frame, a main board and a battery arranged in a back surface of the middle frame, and a back cover that covers the main board and the battery and is coupled to the back surface of the middle frame, wherein the middle frame includes a front mounting portion protruding in a backward direction at a location corresponding to the sub-board, a back mounting portion defined at a location corresponding to the main board and the battery, and a shielding side wall between the back mounting portion and the front mounting portion.