Flexible Flat Cable Assembly for Thermally Stable Display Lighting
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
The existing lighting devices face increased manufacturing costs and size issues due to the need for misalignment allowance means in connectors to accommodate temperature-induced expansion and contraction of light source boards, which affects the reliability of connections between light source boards and the control board.
Innovation Solution
The use of flexible flat cables with a multi-core structure and cable-side connectors that are electrically connected to the control board and light source boards via board-side connectors, allowing for efficient and cost-effective connections without the need for extensive misalignment allowance, while accommodating different wiring patterns and configurations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If misalignment allowance means are provided to connectors to accommodate thermal expansion and contraction, then connection reliability is improved, but manufacturing cost increases
Solution Approach 1:
The patent applies the dynamics principle by making the connector body flexible rather than rigid. The connector body is designed with flexibility to dynamically adapt to misalignment caused by thermal expansion and contraction of the light source board, eliminating the need for complex misalignment allowance structures and reducing manufacturing cost while maintaining connection reliability.
2Reliability
If misalignment allowance means are provided to connectors to accommodate thermal expansion and contraction, then connection reliability is improved, but device size increases
Solution Approach 1:
The connector body is designed with flexibility to dynamically accommodate misalignment, eliminating the need for bulky misalignment allowance structures. This dynamic design allows the connector to adapt to thermal expansion and contraction without increasing device size, maintaining compact form factor while ensuring reliable connections.
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
This solution ensures reliable connections between light source boards and the control board, reducing manufacturing costs and device size, while allowing for flexible assembly and efficient switching control of light-emitting elements.
Implementation Method 1
the light source boards and others expand or contract due to temperature changes, which may cause misalignment between the light source boards and the relay board
Data Source
AI summary
A display device is provided having light source boards each having a wiring pattern including a plurality of wires, a plurality of light-emitting elements disposed on each light source board, switching on and off of which being controlled by a control board, board-side connectors each attached to a corresponding one of the plurality of light source boards, a flexible flat cable that has a multi-core structure including a flat-shaped insulator and a plurality of conductors aligned in a direction orthogonal to a thickness direction of the insulator that is connected at one end to the control board, and a plurality of cable-side connectors attached to the flexible flat cable and coupled to the board-side connectors to connect the flexible cable to the light source boards.