Touch Flexible Circuit Board Bending for Narrow Display Borders
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Solution Overview
Problem
Existing display modules have difficulty in achieving a narrow border design due to limitations in minimizing the boundary width of the touch layer and bending area of the touch flexible circuit board, which fails to meet the increasing market demand for narrower borders.
Innovation Solution
The display module incorporates a touch flexible circuit board that is bent and positioned within a notch area of the display panel, allowing for a reduced width of the lower border by utilizing a first and second bending area with varying radii of curvature, and connected to the touch layer using anisotropic conductive adhesive.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Length of stationary object
If the touch flexible circuit board is positioned at the lower border of the display panel, then the electrical connection to the touch layer is achieved, but the border width increases
Solution Approach 1:
The touch flexible circuit board is moved from the traditional lower border position to the upper border notch area, utilizing the vertical space dimension. This repositioning allows the circuit board to be integrated into the notch region where it does not contribute to the lower border width, while still maintaining electrical connection to the touch layer through flexible routing
Solution Approach 2:
The touch flexible circuit board is nested within the notch area of the display panel. The circuit board is positioned inside the notched region, utilizing the existing space allocation for cameras and sensors, thereby avoiding additional border width while maintaining functional connectivity
2Length of stationary object
If the boundary width of the touch layer is minimized to 1.5 mm, then the border width is reduced, but the manufacturing precision requirements increase
Solution Approach 1:
The touch flexible circuit board and its bending area are extracted from the lower border region and relocated to the upper border notch area. This separation removes the constraint where the circuit board's bending area directly contributed to the lower border width, allowing the touch layer boundary to be minimized to 1.5 mm without compromising overall border dimensions
Solution Approach 2:
The display module is segmented into distinct functional zones: the touch layer with minimized boundary width, the touch flexible circuit board in the upper notch area, and the display panel body. This segmentation allows independent optimization of each component's dimensions and positioning precision requirements
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 design effectively narrows the lower border of the display module by integrating the touch flexible circuit board within the notch area, enhancing the screen-to-body ratio and meeting the demand for narrower borders.
Implementation Method 1
the touch flexible circuit board is electrically connected to the touch layer
Data Source
AI summary
The present disclosure provides a display module and an electronic equipment. The display module includes: a display panel including a first notch near a boundary of the display panel; a touch layer disposed over the display panel; and a touch flexible circuit board electrically connected to the touch layer, where the touch flexible circuit board is disposed adjacent to the first notch and is bent to a side of the display panel away from the touch layer.