Display Panel PCB Attachment Using Suction to Reduce Lifting
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Solution Overview
Problem
Existing display apparatuses face issues with the adhesive force between the printed circuit board and the plate layer, leading to potential lifting and physical interference, which can reduce durability and lifetime.
Innovation Solution
The display apparatus incorporates a printed circuit board with holes and a coupling layer, allowing for enhanced adhesive force through suction operations that minimize movement and air bubbles, thereby reinforcing the attachment between the printed circuit board and the plate layer.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If the printed circuit board is attached to the plate layer, then the structural stability is improved, but adhesive force is insufficient leading to lifting
Solution Approach 1:
The coupling layer is divided into multiple regions with different adhesive properties: a first coupling layer region with higher adhesive force and a second coupling layer region with lower adhesive force. This segmentation allows different areas of the printed circuit board to have different attachment characteristics, preventing lifting while maintaining structural stability.
Solution Approach 2:
Different regions of the coupling layer are assigned different adhesive forces based on local requirements. The first coupling layer region has enhanced adhesive force where it is most needed, while the second coupling layer region has reduced adhesive force to prevent lifting. This local differentiation resolves the contradiction between strong attachment and prevention of lifting.
2Strength
If the printed circuit board is rigidly fixed, then the attachment strength is improved, but physical interference and movement occur
Solution Approach 1:
The coupling layer is designed with flexible properties, allowing the printed circuit board to dynamically adapt to movements and deformations of the display panel. This dynamic characteristic enables the board to move with the panel without causing physical interference, while still maintaining strong attachment through the flexible coupling layer.
3Area of stationary object
If the bezel area is reduced, then the display area is improved, but the structural integrity is compromised
Solution Approach 1:
The coupling layer is segmented into regions with different adhesive characteristics, allowing the printed circuit board to be positioned closer to the display panel edges. This segmentation provides the necessary structural integrity in critical areas while enabling bezel reduction in other areas, thus increasing the display area.
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
This configuration minimizes lifting and physical interference, enhances durability, and increases the lifetime of the display apparatus by improving the adhesive force between the printed circuit board and the plate layer.
Implementation Method 1
a first coupling layer in a portion of the first region and being under the printed circuit board
Implementation Method 2
in the suction operation, it is possible to remove the air bubbles remaining inside the first coupling layer
Data Source
AI summary
A display apparatus may include a display panel including a first region, a second region overlapping the first region, and a third region between the first region and the second region, a printed circuit board disposed at the first region and the second region, and a controller disposed on a printed circuit board. The display panel may be bent in the third region, and the printed circuit board may include a first hole.