Curved Display Module Circuit Board Positioning
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Solution Overview
Problem
Conventional large-sized curved display modules struggle to achieve high precision in curvature due to structural design limitations, and they also face issues with the risk of tearing of flexible circuit boards.
Innovation Solution
The proposed solution involves a curved display module design where the display panel circuit board is arranged at the outer side of the side plate, reducing its influence on the curvature and enhancing precision. This design also includes a back plate with a bottom plate and side plate that define an accommodating space for the backlight assembly, and a flexible circuit board connection that is less prone to tearing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the display panel circuit board is integrated into the curved display module, then the module can be compact and integrated, but the curvature precision is reduced and the flexible circuit board is prone to tearing
Solution Approach 1:
The display module is divided into separate functional components: the display panel assembly (including flexible circuit board) is segmented from the circuit board assembly. These segments are then integrated through a connection structure that allows the display panel to be bent into a curved shape without the circuit board being constrained, thereby maintaining curvature precision while achieving integration.
Solution Approach 2:
The connection between the display panel and circuit board is transitioned from a planar integration to a three-dimensional spatial arrangement. The flexible circuit board extends beyond the curved display panel in a specific direction, allowing the circuit board to be positioned in a dimension where it does not interfere with the curvature of the display panel.
2Reliability
If the flexible circuit board is connected between the display panel and circuit board, then electrical connection is achieved, but the risk of tearing increases due to curvature constraints
Solution Approach 1:
A flexible circuit board is used instead of a rigid circuit board to maintain electrical connection while accommodating the curved shape of the display panel. The flexible circuit board can bend and deform elastically, reducing stress concentration and preventing tearing during the curvature formation process.
Solution Approach 2:
The connection structure is designed in advance to accommodate potential stress and deformation of the flexible circuit board. By pre-planning for the curvature and using flexible materials, the design cushions against the harmful effect of tearing before it occurs.
3Manufacturing precision
If the display panel circuit board is positioned at the outer side of the side plate, then curvature precision is improved, but the structural complexity increases
Solution Approach 1:
The side plate is designed to serve multiple functions: it provides structural support for the display panel, acts as a mounting structure for the circuit board, and defines the spatial relationship between components. This multi-functionality reduces the need for additional separate structures, thereby limiting the increase in overall structural complexity.
Solution Approach 2:
The support structure and circuit board mounting function are merged into a single integrated side plate structure. By combining these functions into one component, the design reduces the total number of parts and simplifies assembly, offsetting the added complexity from positioning the circuit board at the outer side.
Data Source
AI summary
A curved display module and a display device, where the curved display module includes a back plate, a display panel and a display panel circuit board. The back plate includes a bottom plate and a side plate, where the side plate is at an outer periphery of the bottom plate, the bottom plate and the side plate together define an accommodating space to accommodate a backlight assembly, the display panel is on a side of the backlight assembly away from the bottom plate, the display panel circuit board is electrically connected to the display parcel through a flexible circuit board, and the display panel circuit board is at an outer side of the side plate.