Display Device FPC Bracket to Prevent Bending Repulsion
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Solution Overview
Problem
The thickness of display devices is limited by the thickness of circuit components, particularly the flexible printed circuit board (FPC), which experiences increased repulsion force during bending, leading to floating and failure to meet customer thickness specifications.
Innovation Solution
A bracket fastening plate is used to secure the flexible printed circuit board (FPC) to a bracket, suppressing the repulsion force and ensuring the FPC remains stable during bending, thereby allowing for a slimmer display device design.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Length of moving object
If the display device thickness is reduced by removing the backlight unit, then the display device achieves a slimmer design, but the flexible printed circuit board experiences increased repulsion force during bending causing floating and failure to meet thickness specifications
Solution Approach 1:
The bracket applies a preliminary counteracting force to the FPC before bending occurs during assembly. By pre-positioning the bracket to contact and support the FPC at its bending location, the system anticipates and neutralizes the repulsion force that would otherwise cause floating, ensuring the FPC remains stable throughout the bending process and achieves the desired thin profile without defects
Solution Approach 2:
The bracket serves as an intermediary component between the FPC and the display device housing. This mediator structure provides localized support to the FPC during bending, distributing the mechanical stress and preventing direct contact between the FPC and housing that would cause floating, thereby enabling reliable assembly of ultra-thin display devices
2Ease of operation
If the FPC is bent to connect the display panel and circuit board, then electrical connection is achieved, but repulsion force causes the FPC to float and fail thickness specifications
Solution Approach 1:
The invention replaces reliance on pure FPC flexibility with a hybrid mechanical system incorporating a rigid bracket. The bracket provides structural support that substitutes for the FPC's insufficient mechanical strength during bending, allowing the FPC to maintain its electrical connection function while the bracket handles the mechanical stress, ensuring both ease of connection and precision thickness control
Data Source
AI summary
A display device is provided in which an increase in a repulsion force to bending of a flexible printed circuit board (FPC) connected to a display panel is prevented, thereby satisfying a floating thickness specification of the FPC and thus enabling the slimming of the display device. To this end, the display device can include a display panel, a cover member disposed on a front surface of the display panel; a plate disposed on a rear surface of the display panel, a bracket disposed on a rear surface of the plate so as to support the plate, a FPC having one end disposed on one end of the front surface of the display panel. The FPC is bent so that the other end thereof is disposed on a rear surface of the bracket.