Flexible Circuit Board Assembly in Foldable Display Modules
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
The assembly processes of transfer flexible circuit boards in foldable screen devices are complicated due to the need for these boards to be formed in a fixed shape and fixed in corresponding regions, making the connection and communication between the device's components cumbersome.
Innovation Solution
A flexible display module with a flexible circuit board, metal plate, support layer, polarization layer, and cover plate is integrated, where the transfer terminals penetrate through holes in the middle frame to connect with the device's circuits, simplifying the assembly by eliminating the need for complex groove penetration and fixed shapes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If transfer flexible circuit boards are formed in a fixed shape and fixed in corresponding regions, then connection reliability is improved, but assembly process complexity increases
Solution Approach 1:
The patent transforms the rigid fixed-shape circuit board into a flexible circuit board that can dynamically adapt its shape. The flexible circuit board is designed to be bent along a predetermined bending line to match the groove shape, eliminating the need for complex pre-forming processes while maintaining connection reliability through flexible adaptation to the mounting structure.
Solution Approach 2:
The patent changes the physical state parameter of the circuit board from rigid to flexible. By using a flexible circuit board instead of a rigid one, the board can be easily deformed to fit the groove shape during assembly, significantly simplifying the assembly process while ensuring reliable electrical connections between components.
2Reliability
If multiple transfer flexible circuit boards are used to connect components on two ends, then communication connection is improved, but assembly complexity increases
Solution Approach 1:
The patent combines multiple separate transfer flexible circuit boards into a single integrated flexible circuit board structure. This unified board contains multiple connection regions that can simultaneously establish electrical connections between components on both ends of the foldable device, reducing assembly complexity while maintaining communication connectivity.
Solution Approach 2:
The flexible circuit board is designed with multi-functional capabilities, serving as both the structural support and the electrical connection medium. It simultaneously provides mechanical flexibility to accommodate device folding and electrical connectivity for multiple components, eliminating the need for separate dedicated connection boards.
3Stability of the object's composition
If transfer flexible circuit boards are fixed in corresponding regions, then connection stability is improved, but manufacturing complexity increases
Solution Approach 1:
The flexible circuit board's ability to dynamically conform to the groove shape during assembly provides inherent stability. The board is manufactured in a simple flat or pre-bent state, then easily deformed to fit the final position, ensuring stable connections without requiring complex manufacturing processes for precise positioning and fixing.
Solution Approach 2:
By changing the material property from rigid to flexible, the manufacturing process is simplified. The flexible circuit board can be manufactured in a standardized form and then adapted to specific positions through simple bending, rather than requiring complex custom-shaped manufacturing for each specific mounting location.
Data Source
AI summary
A foldable screen device and a flexible display module thereof are provided. Wherein, the flexible display module includes a flexible display main body and a flexible circuit board. The flexible circuit board includes a host board and two transfer terminals disposed opposite to each other. The host board is bonded to a surface of the flexible display main body facing away a light-emitting side. The two transfer terminals are respectively disposed on two ends of the flexible circuit board and are electrically connected to the host board to respectively connect to circuits of bodies on two ends of the foldable screen device. During assembly, the transfer terminals of the flexible circuit board of the present application only need to penetrate through the through holes at corresponding positions of the middle frame, then the transfer terminals can connect to circuits of bodies on two ends of the foldable screen device.