Foam Support Member for Thin OLED Display Weight Reduction

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Solution Overview

Problem

Current information apparatuses face challenges in achieving weight saving and thinning while maintaining strength, particularly with the use of tempered glass for OLED displays, which adds weight and thickness when a touch sensor is not necessary.

Innovation Solution

Incorporating a support member made of a foaming material that fills the gap between the display and the back-face cover, which supports the display and eliminates the need for additional reinforcing materials, allowing for weight saving and thinning, and can be molded to fit curved surfaces.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Strength

If tempered glass is used to reinforce the OLED display, then the strength and rigidity of the display are improved, but the weight and thickness of the information apparatus increase

Engineering Contradiction:
Improvestrength of displayVSAvoidweight of information apparatus
Core Design Contradiction:
StrengthVSWeight of moving object

Solution Approach 1:

The patent changes the material parameter from traditional tempered glass to a foam material with high specific strength. This parameter change allows achieving the required mechanical strength while significantly reducing the weight, as foam materials provide sufficient structural support without the mass penalty of glass reinforcement

Inventive Principle:
Principle #35Parameter changes

Solution Approach 2:

The patent employs a composite structure combining the OLED display with a foam material backing. This composite approach integrates the lightweight foam material with the display structure to provide reinforcement without using traditional heavy glass, thus maintaining strength while reducing overall weight

Inventive Principle:
Principle #40Composite materials

2Strength

If tempered glass is used to reinforce the OLED display, then the strength and rigidity of the display are improved, but the thickness of the information apparatus increases

Engineering Contradiction:
Improvestrength of displayVSAvoidthickness of information apparatus
Core Design Contradiction:
StrengthVSLength of moving object

Solution Approach 1:

The patent changes the reinforcement material parameter from thick tempered glass to thin foam material that provides equivalent or superior structural support. This parameter substitution reduces the thickness contribution of the reinforcement layer while maintaining the required display strength and rigidity

Inventive Principle:
Principle #35Parameter changes

Solution Approach 2:

The foam material acts as a thin film or flexible structural layer that provides reinforcement without the rigid thickness of glass. This thin-film approach maintains display strength while minimizing the increase in overall apparatus thickness

Inventive Principle:
Principle #30Flexible shells and thin films

3Reliability

If multiple posts are used to support the display to the back-face cover, then the display is supported, but the device complexity increases

Engineering Contradiction:
Improvedisplay supportVSAvoidcomplexity of support structure
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The patent merges the display support function with the foam material that fills the space between the display and back-face cover. Instead of separate posts and spacing elements, the foam material simultaneously provides structural support, spacing, and cushioning, thereby reducing device complexity while maintaining reliable display support

Inventive Principle:
Principle #5Merging (Combining)

Solution Approach 2:

The foam material serves multiple functions: it supports the display, maintains spacing from the back-face cover, provides cushioning, and fills void space. This multi-functionality eliminates the need for multiple separate components, reducing overall device complexity while ensuring reliable display support

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

Data Source

PatentUS11809235B2Information apparatus and display module
Publication Date: 2023.11.07 LENOVO SWITZERLAND INTERNATIONAL GMBH
  • US11809235B2 patent drawing
  • US11809235B2 patent drawing
  • US11809235B2 patent drawing

AI summary

An information apparatus includes a display, a back face cover, and a support member. The display covers a face opposite to a display surface of the display. The support member fills a space between the face opposite to the display surface of the display and an inner face of the back-face cover.