Flexible Circuit Board Nesting in Foldable Display Substrate
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Solution Overview
Problem
The increasing power consumption in intelligent electronic devices, particularly in foldable models, necessitates larger batteries, which compromises the device's thickness advantage and screen strength due to inefficient space utilization.
Innovation Solution
The electronic device incorporates a stepped battery arrangement with a flexible circuit board positioned between the substrate body and the bent part of the array substrate, optimizing space usage by reducing the volume of accommodating cavities and enhancing the contact area between support plates and the display screen.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Duration of action of moving object
If the battery capacity is increased to enhance device endurance, then the power consumption is addressed, but the device thickness increases and screen strength is compromised
Solution Approach 1:
The flexible circuit board is nested within the accommodating cavity formed by the bent part and support plate, utilizing the three-dimensional space efficiently. This allows the battery to be positioned optimally without increasing overall device thickness, thereby maintaining endurance while controlling device dimensions.
Solution Approach 2:
The bent part is bent along the thickness direction of the display screen to form an accommodating cavity, transforming the two-dimensional layout into a three-dimensional structure. This enables better space utilization for battery placement without compromising screen strength or increasing device thickness.
2Duration of action of moving object
If the battery capacity is increased to enhance device endurance, then the power consumption is addressed, but the screen strength is compromised
Solution Approach 1:
The array substrate is segmented into a bent part and a support plate that cooperate to form an accommodating cavity. This segmentation allows the battery to be positioned in the cavity without directly contacting the display screen, thereby maintaining screen strength while enabling larger battery capacity for enhanced endurance.
3Volume of stationary object
If the flexible circuit board size is reduced to optimize space utilization, then the battery capacity can be increased, but the manufacturing precision requirements increase
Solution Approach 1:
The bent part is pre-formed with a specific curvature along the thickness direction to create the accommodating cavity structure. This preliminary action defines the spatial relationship between the flexible circuit board and battery, reducing positioning precision requirements during final assembly while maximizing space utilization.
Data Source
AI summary
An electronic device includes: a display screen including an array substrate, the array substrate including a substrate body and a bent part connected with a first side surface of the substrate body, and the bent part being bent towards a non-display side of the display screen; a first support plate connected with the substrate body and cooperating with a part of the substrate body to define a first accommodating cavity, and the bent part being partially located in the first accommodating cavity; and a flexible circuit board arranged in the first accommodating cavity, and connected with and in conduction with the bent part, and the flexible circuit board being at least partially arranged between the substrate body and the bent part.