Anti-Reflection Window Assembly for Narrow-Bezel Module Integration
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Solution Overview
Problem
Existing electronic apparatuses face challenges in achieving a reduced bezel design while maintaining reliability and functionality, particularly in integrating electronic modules without increasing the bezel area.
Innovation Solution
The design incorporates an anti-reflection member with a defined hole and an adhesive layer, including an optically clear resin, to ensure the electronic module overlaps the high transmission region, thereby minimizing the bezel area and enhancing process reliability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a conventional adhesive layer is used without a hole in the anti-reflection member, then the adhesive can cover the entire surface, but defects and bubbles form reducing reliability and light transmittance
Solution Approach 1:
The adhesive layer is segmented into a first adhesive pattern for attachment and a second adhesive pattern filling the hole, rather than using a continuous adhesive layer. This segmentation prevents bubble formation and defects while maintaining reliability.
Solution Approach 2:
The adhesive layer has different properties in different regions: the first adhesive pattern provides attachment function, while the second adhesive pattern in the hole provides filling and sealing function. This local differentiation improves reliability without excessive complexity.
2Illumination intensity
If the adhesive layer is applied to fill the entire anti-reflection member surface, then coverage is complete, but light transmittance in the low wavelength range decreases due to bubbles and defects
Solution Approach 1:
The adhesive layer is divided into discrete patterns rather than a continuous layer, eliminating bubbles and defects that reduce light transmittance. The segmented structure maintains adhesive quality while improving optical performance.
Solution Approach 2:
The adhesive layer is designed to be optically clear with high light transmittance in the low wavelength range (equal to or greater than about 92% in wavelengths equal to or less than about 400 nm), matching the optical requirements of the anti-reflection member.
3Area of stationary object
If the bezel area is reduced to improve device aesthetics and functionality, then the electronic module can be positioned closer to the edge, but manufacturing precision and reliability become more difficult to maintain
Solution Approach 1:
The hole in the anti-reflection member is pre-defined at the appropriate position before adhesive application. This preliminary positioning ensures precise alignment of the electronic module with the display panel, enabling bezel reduction while maintaining manufacturing precision.
Solution Approach 2:
The adhesive layer self-aligns to fill the pre-defined hole, automatically ensuring correct positioning. This self-alignment mechanism simplifies the manufacturing process and maintains precision even with reduced bezel areas.
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 approach reduces the bezel area by allowing the electronic module to be positioned over the high transmission region, improving aesthetics and maintaining the functionality of the electronic apparatus without compromising reliability.
Implementation Method 1
applying an adhesive resin to the anti-reflection member to fill the hole, and attaching a window to the anti-reflection member through the adhesive resin
Implementation Method 2
a thermosetting adhesive resin layer between the window and the anti-reflection member
Data Source
Figure 1A
Figure 1B
Figure 2
AI summary
An electronic apparatus includes an electronic module which outputs or receives a signal, an electronic panel that is divided into a first area overlapping the electronic module, a second area which surrounds at least a portion of the first area, and a third area adjacent to the second area in a plan view, a window on the electronic panel, an anti-reflection member between the window and the electronic panel, and an adhesive layer between the window and the anti-reflection member. A hole which overlaps at least a portion of the first area is defined in the anti-reflection member, and the adhesive layer fills the hole.