Spacer Member Reduces Breakage in Liquid-Crystal Mobile Displays

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Solution Overview

Problem

Mobile terminal devices with touch-screen interfaces face breakage risks due to external pressure on the display components, particularly the glass used in liquid-crystal panels, which can be exacerbated by the need for additional reinforcement components that increase device size and complexity.

Innovation Solution

Incorporating a spacer member formed of an insulator between the substrate and the liquid-crystal flexible cable, which reduces the likelihood of the liquid-crystal module bending or breaking by minimizing gaps and empty spaces, thereby reducing the risk of breakage and maintaining efficient operation.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If the display portion is provided with breakable components such as glass, then the display functionality is improved, but the risk of breakage due to external pressure increases

Engineering Contradiction:

Improvedisplay functionalityVSAvoidbreakage risk

Core Design Contradiction:

ReliabilityVSObject-affected harmful factors

Solution Approach 1:

A cushioning member is disposed between the liquid-crystal module and the substrate to cushion external pressure before it reaches the breakable glass components. This prior cushioning absorbs the impact energy, preventing direct transmission of force that would cause breakage while maintaining display functionality.

Inventive Principle:

Principle #11Beforehand cushioning (Prior cushioning)

Solution Approach 2:

The cushioning member acts as an intermediary element positioned between the liquid-crystal module and the substrate. It mediates the interaction by absorbing external pressure and preventing direct contact between the breakable glass components and external forces, thus reducing breakage risk while preserving display performance.

Inventive Principle:

Principle #24Intermediary (Mediator)

2Strength

If additional reinforcement components are added to protect against breakage, then the breakage resistance is improved, but the device size and complexity increase

Engineering Contradiction:

Improvebreakage resistanceVSAvoidnumber of components

Core Design Contradiction:

StrengthVSDevice complexity

Solution Approach 1:

The cushioning member serves multiple functions simultaneously: it protects the liquid-crystal module from breakage, maintains the spacing between components, and prevents direct contact between the liquid-crystal module and substrate. This multi-functionality achieves breakage resistance without requiring separate reinforcement components, thus avoiding increased device complexity.

Inventive Principle:

Principle #6Universality (Multi-functionality)

Solution Approach 2:

The protective function is merged with the existing structural components by integrating the cushioning member into the assembly between the liquid-crystal module and substrate. This consolidation combines protection and structural support into a unified approach, avoiding the need for additional dedicated reinforcement components and reducing overall device complexity.

Inventive Principle:

Principle #5Merging (Combining)

Data Source

PatentUS8629952B2Mobile terminal device

Publication Date: 2014.01.14 FCNT LLC

AI summary

A mobile terminal device includes a liquid-crystal portion that displays an image; a substrate that sandwiches another component between one surface of the substrate and the liquid crystal portion, and that has another surface that is provided with a control circuit; a connecting portion that connects the liquid-crystal portion and the control circuit; and a spacer member formed of an insulator and interposed between the another surface of the substrate and the connecting portion.