Portable Terminal Bezel Reduction via Thin Film Adhesive Sealing
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Solution Overview
Problem
Existing portable terminals face constraints in minimizing the bezel portion size due to the limited width of adhesive tapes used for waterproofing, which restricts the reduction of the bezel length and affects the active area of the touch window.
Innovation Solution
A sealant frame with a first and second frame configuration, including extension members and arrangement members, is used to surround the display module and housing, with an adhesive applied to prevent liquid ingress, allowing for a reduced bezel length by eliminating the need for a wide adhesive tape attachment area.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If adhesive tape is used to combine the window glass and housing for waterproofing, then liquid protection is provided, but the attachment area of the adhesive tape increases the bezel portion length
Solution Approach 1:
The patent applies a thin film adhesive layer directly on the inner surface of the window glass, replacing the conventional thick adhesive tape. This thin film structure provides effective waterproof protection while occupying minimal space, thereby reducing the bezel portion length without compromising liquid protection.
Solution Approach 2:
The adhesive is applied in a different dimensional configuration - as a thin film layer on the inner surface of the window glass rather than as a thick tape attached to the outer surface or edges. This dimensional change allows waterproofing without increasing the bezel length.
2Length of stationary object
If the width of adhesive tape is minimized, then the bezel portion length is reduced, but the waterproof protection effectiveness decreases
Solution Approach 1:
The patent employs a thin film adhesive layer that, despite its minimal thickness, provides effective waterproof protection. The thin film is applied across the inner surface of the window glass, creating a continuous barrier against liquid penetration without requiring the width or thickness of conventional adhesive tapes.
Solution Approach 2:
The patent replaces the mechanical adhesive tape system with a chemical bonding system using a thin film adhesive layer. This substitution allows for effective waterproofing through molecular adhesion rather than mechanical bonding, enabling reduced bezel dimensions without sacrificing protection effectiveness.
3Area of stationary object
If the bezel portion length is reduced to increase active area, then the attachment area for waterproofing is reduced, but liquid ingress risk increases
Solution Approach 1:
The thin film adhesive layer provides comprehensive waterproof protection across the window glass surface without requiring additional space. By applying the adhesive as a continuous thin film on the inner surface, the patent ensures liquid ingress protection is maintained even as the bezel portion length is reduced to maximize the active area.
Solution Approach 2:
The adhesive layer is applied in advance on the inner surface of the window glass before final assembly, creating a pre-established waterproof barrier. This preliminary action ensures that liquid ingress protection is already in place before the device is sealed, maintaining reliability even with minimized bezel dimensions.
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 effectively impedes liquid entry and reduces the bezel portion length, enabling a larger active area while maintaining the overall size of the portable terminal, enhancing portability and aesthetics.
Implementation Method 1
an adhesive tape 60 to a bottom surface of a portion of the window glass 10 not overlapping the LCD module 20... the adhesive tape 60 may perform waterproof functionality of preventing external liquid and the like from penetrating into a portion in which the window glass 10 and the LCD module 20 are disposed
Data Source
AI summary
Provided is a portable terminal, including: a window module; a display module disposed below the window module; a housing partially surrounding the window module and the display module; and a waterproof portion disposed on at least one of a bottom surface and a side surface of the display module to impede liquids from penetrating between the display module and the housing.