Segmented PCB with Flexible Connection for Curved Displays
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Solution Overview
Problem
Printed circuit boards (PCBs) often fail due to insufficient elasticity when subjected to stresses and tensions from tape carrier packages attached to curved display panels, leading to increased gaps and potential defects in the display apparatus.
Innovation Solution
A method of manufacturing a display apparatus involving a printed circuit board divided into separate units with a connection member that covers an opening, allowing for flexibility and electrical connection between units, which can adapt to curvature and reduce stress on the PCB.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If the printed circuit board is made as a single rigid unit, then manufacturing is simpler, but it cannot accommodate curvature and experiences stress-induced failures
Solution Approach 1:
The printed circuit board is divided into multiple separate PCB units (first PCB unit and second PCB unit) that can be assembled together. This segmentation allows each unit to be manufactured independently with standard processes while the assembled structure accommodates curvature through the connection member, resolving the contradiction between manufacturing simplicity and reliability under stress.
Solution Approach 2:
The connection member is designed with flexibility to allow relative movement between the first and second PCB units. This dynamic capability enables the PCB assembly to adapt to curvature changes and stress conditions, maintaining reliability while preserving manufacturing simplicity through modular construction.
2Adaptability or versatility
If the printed circuit board is divided into separate units, then elasticity and stress resistance improve, but device complexity increases
Solution Approach 1:
The PCB is segmented into multiple units connected by a connection member, providing elasticity and stress resistance. The segmentation is designed to be minimal and functional, dividing only where necessary to achieve the required adaptability while avoiding unnecessary complexity in the overall structure.
Solution Approach 2:
The connection member serves as an intermediary element between the separate PCB units, providing the necessary flexibility and stress absorption. This intermediary component simplifies the overall design by consolidating the complexity into a single specialized element rather than requiring complex integrated structures throughout the PCB.
3Ease of operation
If tape carrier packages are attached to a curved display panel, then display functionality is achieved, but stress and tension increase causing gaps and defects
Solution Approach 1:
The connection member enables dynamic adjustment and relative movement between PCB units, allowing the structure to absorb and distribute the stress and tension generated by tape carrier packages on curved display panels. This prevents stress concentration that would otherwise cause gaps and defects.
Solution Approach 2:
Dividing the PCB into separate units with a flexible connection allows the structure to accommodate the stress and tension from curved display panels more effectively. Each unit can independently handle localized stress while the connection member distributes overall tension, preventing the harmful effects of stress concentration.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Prevents failures by allowing the PCB to accommodate curvature without separating from the display panel, maintaining electrical connectivity and reducing stress-induced damage.
Implementation Method 1
providing, on the printed circuit board, a connection member electrically connecting the first printed circuit unit and the second printed circuit unit
Implementation Method 2
the printed circuit board comprising a first region, a second region, and a third region... After the tape carrier package is attached to the display panel, the printed circuit board may be divided into the first printed circuit unit and the second printed circuit unit
Data Source
AI summary
Provided is a method of manufacturing a display apparatus. The method includes: preparing a printed circuit board including a first printed circuit unit and a second printed circuit unit; providing, on the printed circuit board, a connection member electrically connecting the first printed circuit unit to the second printed circuit unit; coupling one end of a tape carrier package to the printed circuit board; coupling the other end of the tape carrier package to a display panel; and cutting the printed circuit board into the first printed circuit unit and the second printed circuit unit that move relative to each other.