COF Buffer Structure for Impact-Resistant Display Assembly
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Solution Overview
Problem
Display apparatuses mounted on movable vehicles are vulnerable to external impacts, which can cause deformation or damage, potentially leading to user injury and malfunction.
Innovation Solution
The display apparatus incorporates a buffer system, including a guide panel with a buffer space and elastically deformable buffer bars, to absorb and mitigate external impacts applied to the chip on film, thereby reducing damage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If the chip on film is made thin to increase assembly convenience and reduce space, then assembly efficiency is improved and space occupation is reduced, but vulnerability to external impact increases
Solution Approach 1:
The patent introduces a buffer structure positioned between the chip on film and the guide panel. This buffer provides beforehand cushioning by absorbing and distributing external impact forces before they reach the thin chip on film, thereby protecting it from damage while maintaining its thin profile for space efficiency
Solution Approach 2:
The buffer acts as an intermediary element between the chip on film and the guide panel. It mediates the transmission of external forces, converting concentrated impact loads into distributed forces that the thin chip on film can withstand, thus resolving the contradiction between thinness and impact resistance
2Length of moving object
If the display apparatus has a slim structure or flexible bent display, then thinness and adaptability are improved, but susceptibility to external impact increases
Solution Approach 1:
The buffer structure provides beforehand cushioning by being positioned between the slim display components and potential impact sources. It absorbs impact energy before it reaches the thin display panel, enabling the apparatus to maintain its slim profile while gaining impact resistance
Solution Approach 2:
The patent employs a buffer structure that can deform flexibly under impact while protecting the thin display components. This flexible buffering mechanism allows the slim display apparatus to withstand external forces without compromising its thin design
3Area of stationary object
If the chip on film is positioned close to the guide panel for compact assembly, then assembly density is improved, but impact damage risk increases
Solution Approach 1:
The patent resolves the spatial conflict by utilizing the vertical dimension between the chip on film and guide panel. Instead of increasing horizontal spacing, a buffer structure is inserted in the vertical direction, maintaining compact footprint while providing necessary impact protection
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 buffer system effectively suppresses the impact applied to the chip on film, minimizing damage and ensuring the display apparatus functions correctly even under external stress.
Implementation Method 1
a buffer bar (212) including a plurality of buffer bars spaced apart from each other in the buffer space, and elastically deformable when subjected to the impact
Data Source
AI summary
A display apparatus can include a display panel configured to display or reproduce an image or a video, a guide panel disposed in rear of the display panel, a printed circuit board mounted on the guide panel and electrically connected to the display panel, and a chip on film (COF). The COF can have one side electrically connected to the display panel and another side electrically connected to the printed circuit board. A portion of the COF can be bent to surround the guide panel. Further, in the guide panel, a buffer for alleviating an impact applied to the COF can be formed in a portion surrounded by the COF. In addition, a plurality of buffer bars can be disposed to be spaced apart from each other in a vertical direction of the guide panel.