Flexible Printed Circuit Connection Auxiliary Member

Resolve Bottlenecks,
Find Innovative Solutions
Generate Solutions

Solution Overview

Problem

The existing methods for connecting flexible printed circuits to circuit boards are prone to damage during assembly due to the risk of the terminal portions being caught between the chassis and the circuit board, leading to malfunctions and breakage, which complicates the assembly process and reduces workability.

Innovation Solution

A device with a connection auxiliary member is used, which includes a fixed portion and a deformed portion that can be pushed to lift the terminal portion of the flexible printed circuit from the chassis, allowing for easier connection without sandwiching and reducing the risk of damage.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If the terminal portions of flexible printed circuits are disposed to overlap the circuit board mounted area on the rear chassis, then the connection between the flexible printed circuit and circuit board is facilitated, but the terminal portions are caught between the rear chassis and circuit board causing damage and malfunction

Engineering Contradiction:
Improveworkability of connecting flexible printed circuitVSAvoidintegrity of flexible printed circuit terminal portions
Core Design Contradiction:
Ease of operationVSReliability

Solution Approach 1:

A connection auxiliary member is introduced as an intermediary component between the flexible printed circuit and the circuit board. This auxiliary member includes a lifting portion that protrudes from the rear chassis to contact and lift the terminal portion of the flexible printed circuit, preventing it from being caught between the chassis and circuit board during assembly operations.

Inventive Principle:
Principle #24Intermediary (Mediator)

2Reliability

If manual lifting of terminal portions is performed during assembly, then damage to flexible printed circuits is prevented, but the assembly process becomes complex and time-consuming

Engineering Contradiction:
Improveprevention of flexible printed circuit damageVSAvoidcomplexity of assembly process
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The connection auxiliary member is designed to automatically lift the terminal portions of the flexible printed circuit through its lifting portion that protrudes from the rear chassis. This self-service mechanism eliminates the need for manual intervention to lift the terminal portions, thereby preventing damage while maintaining a simple and efficient assembly process.

Inventive Principle:
Principle #25Self-service

3Stability of the object's composition

If the flexible printed circuit is fixed to the rear chassis except for terminal portions, then the circuit is stabilized, but the terminal portions remain vulnerable to being caught during assembly

Engineering Contradiction:
Improvestability of flexible printed circuitVSAvoidrisk of terminal portion damage
Core Design Contradiction:
Stability of the object's compositionVSObject-affected harmful factors

Solution Approach 1:

The lifting portion of the connection auxiliary member serves as a protective intermediary that contacts the terminal portions of the flexible printed circuit. This intermediary structure prevents the terminal portions from being pinched or caught between the rear chassis and the circuit board during assembly, thereby protecting them from damage while maintaining the stability of the fixed portions.

Inventive Principle:
Principle #24Intermediary (Mediator)

Data Source

PatentUS7604487B2Device comprising flexible printed circuit and connection auxiliary member
Publication Date: 2009.10.20 HANNSTAR DISPLAY CORP
  • US7604487B2 patent drawing
  • US7604487B2 patent drawing
  • US7604487B2 patent drawing

AI summary

A device includes a chassis and a flexible printed circuit. The flexible printed circuit has a terminal portion which is disposed so as to overlap with a mounted area of a circuit board mounted on a surface of the chassis. The device includes a connection auxiliary member which is disposed on the surface of the chassis at a position close to the terminal portion. The connection auxiliary member includes a fixed portion fixed to the surface of the chassis and a deformed portion connected to the fixed portion. The deformed portion deforms so that a part thereof rises from the surface of the chassis by pushing the deformed portion toward the fixed portion to lift up the terminal portion of the flexible printed circuit from the surface of the chassis.