Flexible Circuit Board Grooves for Mobile Terminal Bezel Reduction
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Solution Overview
Problem
The limited space within mobile terminals due to the placement of circuit boards at the rear surface of touch screens restricts the accommodation of components like cameras and sensors, necessitating a reduction in bezel size to optimize internal space utilization.
Innovation Solution
Incorporating first and second flexible circuit boards with strategically positioned openings and bending areas to create grooves that allow for the placement of cameras and other components, while maintaining connectivity between the display and touch panels through adhesive members and signal wires.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the film is disposed with a curved shape to connect the circuit board at the rear surface, then the connection between the circuit board and touch screen is achieved, but the space to dispose parts such as camera and sensor is limited inside the mobile terminal
Solution Approach 1:
The flexible circuit board is divided into multiple regions: a first bending area for curvature formation, a second bending area for additional flexibility, and a flat region. Openings are strategically positioned in these bending areas to create grooves that accommodate cameras and sensors, thereby segmenting the space utilization while maintaining connection reliability.
Solution Approach 2:
The flexible circuit board utilizes three-dimensional space by forming curved shapes with bending areas and creating grooves through openings. This dimensional transformation allows components like cameras and sensors to be positioned within the grooves, effectively using vertical and lateral spaces that would otherwise be unavailable in a flat configuration.
2Volume of moving object
If the bezel region size is reduced to optimize internal space, then more internal space is available for components, but the structural integrity and assembly complexity may be affected
Solution Approach 1:
The flexible circuit board is segmented into distinct functional areas including first and second bending areas and a flat region, with openings positioned to create grooves. This segmentation allows the bezel region to be minimized while maintaining structural integrity through the distributed bending areas and proper positioning of openings for component accommodation.
3Length of stationary object
If the flexible circuit board is made thinner to reduce overall device thickness, then the device becomes more compact, but the flexibility and durability of the circuit board may be compromised
Solution Approach 1:
The flexible circuit board is divided into a first bending area, second bending area, and flat region, with openings positioned to create grooves. This segmentation allows the board to be thinner overall while maintaining durability through strategic reinforcement at bending areas and proper distribution of stress points, enabling compact device thickness without sacrificing reliability.
Data Source
AI summary
A touch screen panel including a display panel; a first flexible circuit board including a first end connected to the display panel, the first flexible circuit board having at least one first opening; a touch panel disposed on the display panel and the first flexible circuit board; and a second flexible circuit board including a first end connected to the touch panel, the second flexible circuit board having at least one second opening corresponding to the at least one first opening.