Display Module Support Structure for 120 Hz Impact Resistance
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Solution Overview
Problem
In electronic devices with high-performance display modules supporting 120 Hz operation, the increased size of the chip-on-film (COF) due to additional wires and pads leads to greater gaps, making the display module more susceptible to cracking upon impact, particularly at the device's corners.
Innovation Solution
The electronic device incorporates a support member that compensates for gaps and steps within the display module, extending between the display panel and the panel flexible circuit film to reduce empty spaces and minimize crack formation during drops.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the COF size is increased to support 120 Hz operation with additional wires and pads, then the display performance is improved, but the gaps inside the display module increase making it more susceptible to cracking upon impact
Solution Approach 1:
A support member is disposed between the display panel and the COF to beforehand compensate for gaps and steps in the display module. This support member prevents the display panel from directly contacting the COF, providing cushioning that reduces impact forces during drops and prevents cracking, thereby resolving the contradiction between high-frequency display performance and display module durability
2Reliability
If gaps are reduced to improve impact resistance, then display module durability is improved, but the COF cannot be properly accommodated with its required size for 120 Hz operation
Solution Approach 1:
The support member is segmented to have different heights in different regions: a first height in a first region and a second height greater than the first height in a second region. This segmentation allows the support member to accommodate the larger COF size required for 120 Hz operation while simultaneously reducing gaps and improving impact resistance, resolving the contradiction between durability and component accommodation
Data Source
AI summary
An electronic device is provided. The electronic device includes a housing and a display including a transparent plate forming a front of the electronic device, a display panel viewable from the front of the electronic device through the transparent plate, a panel flexible circuit film arranged under the rear surface of the display panel including a bending part that extends toward the front surface of the display panel in a region adjacent to a first side surface of the electronic device, the bending part being electrically connected to the display panel on the front surface of the display panel, and a first support member arranged between the rear surface of the display panel and the panel flexible circuit film, a partial region of the first support member having an area larger than that of the panel flexible circuit film within a designated distance from the first side surface.