Display Bending Region Circuit Board Stress Distribution
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Solution Overview
Problem
The challenge lies in reducing the failure rate of display devices during the bending process, which can lead to defects in electronic devices due to process errors, especially in achieving a slim bezel design.
Innovation Solution
A display device configuration with a non-bending region and a bending region, featuring a specific curvature, where the first and second circuit boards are electrically connected through a conductive element, and adhesive elements are strategically placed to distribute stress uniformly, ensuring a uniform curvature radius during bending.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Length of moving object
If the display device is bent to achieve a slim bezel design, then the device thickness is reduced and aesthetic appearance is improved, but the failure rate increases due to process errors in the bending process
Solution Approach 1:
The display device is divided into a non-bending region and a bending region, with the bending region further subdivided into a curvature region and a facing region. This segmentation allows the bending process to be localized to specific areas, reducing stress concentration and process errors while achieving the slim bezel design.
Solution Approach 2:
Different regions of the display device are assigned different functional properties: the non-bending region maintains structural integrity, while the bending region is designed with specific curvature characteristics. The first adhesive element is strategically placed in the curvature region to provide localized stress management during bending.
2Ease of manufacture
If the bending process is performed without proper stress distribution, then the manufacturing process is simplified, but distortion occurs and manufacturing precision deteriorates
Solution Approach 1:
The first adhesive element is pre-positioned in the curvature region before the bending process. This preliminary placement ensures that stress is properly distributed during bending, maintaining curvature uniformity without complicating the overall manufacturing process.
Solution Approach 2:
The first adhesive element acts as an intermediary between the curvature region and the facing region, mediating the stress distribution during bending. This intermediary component ensures uniform curvature while keeping the bending process relatively simple.
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 configuration significantly reduces the failure rate of display devices by preventing distortion and ensuring a consistent curvature radius, thereby enhancing the reliability and durability of the bending process.
Implementation Method 1
The first adhesive element may be disposed between the first circuit board and the second circuit board in the thickness direction of the display module to combine the first circuit board with the second circuit board
Implementation Method 2
the conductive element may be disposed between the first circuit board and the second circuit board in the thickness direction of the display module to electrically connect the first circuit board to the second circuit board
Data Source
AI summary
A display device includes a display panel, a first circuit board, a second circuit board, a first adhesive element, and a conductive element. The display panel includes a non-bending region and a bending region that is bent from the non-bending region. The bending region includes a curvature region having a specific curvature and a facing region facing the non-bending region in a thickness direction of the display module. The first adhesive element is disposed to combine the first circuit board with the second circuit board, and the conductive element is disposed to electrically connect the first circuit board to the second circuit board.