LCD Frame Coupling Groove for Flexible Printed Circuit Stability
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional liquid crystal displays face reliability issues due to the loosening of flexible printed circuits caused by their resilience, which undermines the stability of the display.
Innovation Solution
A frame with a coupling groove and a curved surface is designed to securely mount the flexible printed circuit, preventing loosening by providing a hexahedral-shaped groove that securely engages the circuit and a curved surface for easy coupling, thereby reducing the impact of resilience.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If double-sided tape is used to attach the flexible printed circuit, then the assembly process is simple, but the flexible printed circuit loosens due to resilience
Solution Approach 1:
The frame is segmented to include a coupling groove that divides the mounting area, providing a dedicated receptacle for the flexible printed circuit. This segmentation creates a physical constraint that prevents loosening while maintaining assembly simplicity.
Solution Approach 2:
The coupling groove acts as an intermediary structure between the frame and the flexible printed circuit. It mediates the connection by providing a geometric interface that accommodates the circuit's resilience while maintaining stable attachment.
2Adaptability or versatility
If the flexible printed circuit is bent to fit, then it can be mounted on the frame, but it loosens due to resilience
Solution Approach 1:
The coupling groove is pre-formed on the frame with dimensions and geometry designed to accommodate the bent flexible printed circuit. This preliminary preparation ensures that when the circuit is bent and inserted, it is immediately secured in the correct position and constrained against loosening.
Solution Approach 2:
The coupling groove introduces a vertical dimension to the mounting structure, creating depth that accommodates the bent circuit's profile. This dimensional addition allows the circuit to maintain its bent shape while being securely held in place.
3Ease of manufacture
If a simple frame structure is used, then manufacturing is easy, but the flexible printed circuit cannot be securely mounted
Solution Approach 1:
The frame maintains simple overall structure for easy manufacturing, but locally includes a coupling groove with specific geometric features. This local quality enhancement provides secure mounting capability without complicating the entire frame manufacturing process.
Solution Approach 2:
The coupling groove's geometric parameters (depth, width, shape) are specifically designed to match the flexible printed circuit's dimensions. By optimizing these local parameters, the frame achieves secure mounting capability while maintaining overall structural simplicity.
Data Source
AI summary
A liquid crystal display includes a frame having a coupling groove, an optical sheet adjacent the frame, and a flexible printed circuit on a side of the optical sheet, wherein the flexible printed circuit is coupled to the frame at the coupling groove. A manufacturing method for a liquid crystal display includes providing a frame having a coupling groove, providing an optical sheet adjacent the frame, and providing a flexible printed circuit on a side of the optical sheet and coupling the flexible printed circuit to the frame at the coupling groove.