Bezel Tape Layout That Protects Display ACF Bonding
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Solution Overview
Problem
The existing configuration in electronic apparatuses, where a bezel member is fixed to a display using double-sided tape that also adheres to the ACF bonding between the display and a flexible board, leads to destruction of the ACF bonding when the bezel is peeled off for maintenance, necessitating unnecessary replacement of the display.
Innovation Solution
A bezel member is fixed to the standing wall and display using a combination of double-sided tapes, with a non-adhesive region positioned to avoid the folded portion between the tapes, ensuring stable fixation and preventing destruction of the display during maintenance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If the bezel member is fixed to the display using double-sided tape that also adheres to the ACF bonding, then the fixation strength of the bezel member is improved, but the display is destroyed when the bezel is peeled off for maintenance
Solution Approach 1:
The double-sided tape is segmented into multiple regions with different adhesive properties: a first adhesive region that bonds the bezel to the standing wall, a second adhesive region that bonds the bezel to the display, and a non-adhesive region positioned between them. This segmentation allows the bezel to be removed from the display without destroying the ACF bonding, as the non-adhesive region prevents the tape from bonding to the folded portion and underlying ACF connections.
Solution Approach 2:
Different regions of the double-sided tape are given different local qualities: the first adhesive region has strong bonding capability to the standing wall, the second adhesive region has bonding capability to the display, and the non-adhesive region has no bonding capability. This local differentiation enables selective adhesion that protects the ACF bonding while maintaining bezel fixation.
2Stability of the object's composition
If the double-sided tape adheres to the ACF bonding portion, then the bezel member is stably fixed, but the ACF bonding is destroyed when maintenance is performed
Solution Approach 1:
The non-adhesive region is preliminarily positioned between the first and second adhesive regions to prevent the double-sided tape from contacting and bonding to the folded portion and ACF connections. This preliminary preventive measure ensures that when the bezel is removed for maintenance, the ACF bonding remains intact and undamaged.
Solution Approach 2:
The non-adhesive region acts as an intermediary barrier between the adhesive regions and the folded portion/ACF bonding. It mediates the interaction by providing a non-adhesive interface that prevents direct bonding, thereby protecting the ACF connections while still allowing the bezel to be stably fixed through the adhesive regions.
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
The solution stabilizes the bezel member attachment, preventing damage to the display and allowing for its reuse after maintenance, thereby improving maintainability and reducing component replacement costs.
Implementation Method 1
the bezel member adheres to the standing wall with a first double-sided tape
Implementation Method 2
adheres to the front surface of the display with a second double-sided tape
Data Source
AI summary
An electronic apparatus includes: a chassis member that has a standing wall; a display that is supported by the chassis member and has an outer peripheral edge portion surrounded by the standing wall; a control board that is connected to the display and controls display of the display; and a bezel member that is provided so as to straddle between the standing wall and the display, and is adhesively fixed to front surfaces of the standing wall and the display. A folded portion is provided between the display and the control board and is folded back to a back side of the display so as to wrap around one side of the outer peripheral edge portion of the display.