Angled Drive Board in Display Bezel for Narrow Width
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Solution Overview
Problem
Existing display devices with narrow bezels are hindered by the width of the drive board, which restricts the ability to achieve a truly narrow bezel design due to the parallel arrangement of the drive board and display panel.
Innovation Solution
The display device features a drive board and display panel disposed at an included angle, with a flexible printed circuit board connecting them, allowing the drive board to be fixed within a bezel protrusion, reducing the bezel's width by minimizing the drive board's projection on the display panel's plane, and incorporating design features like adhesive fixation and curved sections to prevent damage and enhance installation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If the drive board is disposed parallel to the display panel, then the drive board can be easily installed and connected, but the bezel width cannot be reduced
Solution Approach 1:
The drive board is disposed at an included angle (e.g., 45 degrees) relative to the display panel instead of being parallel, changing the spatial arrangement from a two-dimensional parallel layout to an angled three-dimensional configuration. This dimensional change allows the drive board to fit within the protruding accommodating cavity of the bezel, reducing the visible bezel width while maintaining installation feasibility through the angled connection via flexible printed circuit board
2Length of stationary object
If the drive board is disposed at an included angle to reduce bezel width, then the bezel can be narrowed, but the flexible printed circuit board may be damaged due to pulling
Solution Approach 1:
A curved section is pre-formed in the flexible printed circuit board between the drive board and display panel, creating built-in bending space and flexibility. This pre-curved configuration acts as a cushion that absorbs pulling forces and mechanical stress during installation and operation, preventing damage to the flexible printed circuit board while maintaining the angled drive board configuration for narrow bezel width
3Ease of manufacture
If the first end of the flexible printed circuit board is fixed to the front facet, then electrical connection is achieved, but the first end may be detached due to pulling forces
Solution Approach 1:
The flexible printed circuit board is fixed to the drive board at multiple locations: the second end is fixed to the display panel, the fixed section is fixed to the back facet of the drive board, and the first end is fixed to the front facet. This multi-point fixation distributes pulling forces across different locations, with the curved section absorbing stress, preventing detachment at the first end while maintaining electrical connection
Data Source
AI summary
A display device includes a display panel, a drive board, and a flexible printed circuit board. A bezel located on one side of the display panel protrudes relative to a surface on which the display panel is mounted, and an accommodating cavity is formed in the protrusion. The drive board is fixed in the accommodating cavity, and the drive board and the display panel are disposed at an included angle.