Corner Adhesive Waterproofing for Display Devices
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Solution Overview
Problem
Existing waterproof technologies for mobile terminal devices, such as smartphones, are challenging to implement effectively without reducing the display member's ratio in the housing, especially when the device is exposed to moisture and dust.
Innovation Solution
A display device design featuring a display member with a flat-plate shape, a frame member on its back surface, and a housing member that surrounds the display surface, utilizing adhesive members on parallel surfaces of the housing member's long and short sides, and connecting adhesive members at the corners to ensure waterproofness without compromising the display member's ratio.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If waterproof structures are implemented to ensure highly reliable waterproofness, then waterproof reliability is improved, but the thickness of the mobile terminal device increases or the ratio of the display member decreases
Solution Approach 1:
The adhesive members are arranged in a planar configuration at the corners of the housing member, allowing the display member to extend closer to the housing edges without interfering with the waterproof sealing structure. This corner-based adhesive arrangement utilizes the two-dimensional space efficiently, enabling the display area to maximize its ratio while the adhesive members provide waterproof sealing at the critical corner regions where housing members meet.
2Area of stationary object
If the display member occupies most of the housing, then the display member ratio is improved, but implementing waterproofness becomes more difficult without increasing device thickness
Solution Approach 1:
The waterproof sealing function is segmented into multiple adhesive members positioned at different locations (long side and short side) of the housing member, with corner adhesive members connecting them. This segmentation allows each adhesive member to be optimized for its specific location while collectively providing comprehensive waterproof protection. The segmented approach simplifies the overall waterproof structure by distributing the sealing function across multiple discrete elements rather than requiring a single complex thick sealing structure.
3Reliability
If adhesive members are provided on the housing member for waterproof bonding, then waterproof reliability is improved, but the display member cannot be positioned closer to the housing edge
Solution Approach 1:
The corner adhesive members continuously connect the adhesive members on the long side and short side of the housing member, creating an uninterrupted waterproof sealing path around the display member. This continuous adhesive network ensures that moisture and dust cannot penetrate through gaps between discrete adhesive members, while the corner-based connection allows the display member to extend maximally close to the housing edges without compromising the continuity of the waterproof barrier.
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 achieves highly reliable waterproofness for display devices with large display members by allowing the display member to occupy a larger ratio within the housing while preventing moisture and dust ingress, thus maintaining visibility and functionality.
Implementation Method 1
a waterproof adhesive member 221 is provided between the frame member 200 and the housing member 300
Implementation Method 2
a connecting adhesive member 223 that connects the adhesive member 221 on the long side and the adhesive member 222 on the short side
Data Source
AI summary
To provide a display device that implements highly reliable waterproofness without reducing the ratio of a display member in a housing. The display device includes a display member having a flat-plate shape, a frame provided on a peripheral edge of a back surface facing a display surface of the display member, and a housing member provided on a side surface of the display member to surround the display surface, in which the housing member is provided with adhesive members on surfaces substantially parallel to the display surface and different from each other on a long side and a short side of the housing member, and at least one or more corners of four corners of the display surface are provided with a connecting adhesive member that connects the adhesive member of the long side of the housing member and the adhesive member of the short side of the housing member.