Narrow-Bezel Display Assembly With Stable Adhesive Bonding
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Solution Overview
Problem
Existing display devices face challenges in miniaturization and weight reduction due to the limitations of their frame designs.
Innovation Solution
The display device incorporates an optical member, a first electro-optical member, a housing, and an adhesive layer, where the adhesive layer is strategically placed between the electro-optical member and the housing's protruding portion, allowing for a narrowed frame width.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If the frame width is narrowed for miniaturization and weight reduction, then the device size and weight are reduced, but the adhesion stability between components deteriorates
Solution Approach 1:
The protruding portion extends in the thickness direction (Z-axis) to provide adhesion area without increasing the frame width in the plane direction. This dimensional transition allows the adhesive layer to maintain sufficient bonding area while the frame remains narrow in the visible plane, resolving the contradiction between compact size and adhesion stability.
Solution Approach 2:
The adhesive layer is configured as a thin film that conforms to the protruding portion's geometry. This thin-film approach provides sufficient adhesion strength through optimized material properties and surface contact area, enabling stable bonding without requiring a large frame width or thick adhesive layer.
2Volume of moving object
If the frame width is narrowed for miniaturization, then the device size is reduced, but the manufacturing precision required increases
Solution Approach 1:
The protruding portion serves as a mechanical intermediary and alignment reference between the housing and the first electro-optical member. Its geometric features provide natural positioning surfaces that guide precise assembly, reducing the need for high-precision manufacturing tolerances while enabling narrow frame width.
3Shape
If the frame width is narrowed for aesthetic improvement, then the appearance is improved, but the adhesion area between components is reduced
Solution Approach 1:
The adhesive area is increased by utilizing the thickness direction through the extended protruding portion. This allows the adhesion area to grow in the Z-dimension while the frame width remains narrow in the XY-plane, simultaneously achieving aesthetic improvement and maintaining sufficient adhesion area.
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 enables a reduction in the frame width, improving the device's appearance, reducing size and weight, and stabilizing adhesion, while also suppressing the visibility of black lines.
Implementation Method 1
The adhesive layer is disposed between the third region and the protruding portion
Data Source
AI summary
A display device according to the present disclosure includes an optical member, a first electro-optical member, a housing, and an adhesive layer. The optical member has translucency and has a back surface including a first region and a second region outside the first region. The first electro-optical member is disposed on a back surface side of the optical member, has an optical characteristic changed with voltage application, and has a back surface including a third region and a fourth region outside the third region. The housing is disposed on the back surface side of the optical member and outside the first electro-optical member, and has a protruding portion extending along the back surface of the first electro-optical member. The adhesive layer is disposed between the third region and the protruding portion.