Display Module Bezel Pattern for Wider Screens and Optical Transmission
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Solution Overview
Problem
Portable electronic devices face challenges in achieving a wider display area while minimizing the bezel area, which affects the overall design and functionality.
Innovation Solution
The display module incorporates a bezel pattern with a convex shape towards the center, featuring a transmission area for optical signal transmission, and includes a display panel with a glass substrate, encapsulation substrate, sealing member, circuit element layer, and display element layer, along with an anti-reflector and input detection sensor, to optimize the display area and reduce the bezel area.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of moving object
If the bezel area is reduced to provide a wider display area, then the display area is improved, but the structural stability and sealing may deteriorate
Solution Approach 1:
The bezel pattern is divided into multiple segments: a first bezel pattern extending along the edge and a second bezel pattern extending from the first bezel pattern toward the center. This segmentation allows the display area to be expanded while maintaining structural integrity through distributed support elements.
Solution Approach 2:
The second bezel pattern is positioned to locally reinforce specific areas where structural support is needed, while leaving other areas open for display purposes. The convex shape of the second bezel pattern toward the center provides localized structural stability without compromising the overall display area.
2Area of moving object
If the bezel area is reduced to provide a wider display area, then the display area is improved, but the manufacturing precision and failure rate may worsen
Solution Approach 1:
The circuit element layer and display element layer are configured in advance to expose specific portions that correspond to the transmission area. This preliminary configuration ensures that optical signals can pass through the required areas while maintaining manufacturing precision, as the exposure patterns are designed and executed during the manufacturing process.
Solution Approach 2:
The bezel pattern acts as an intermediary structure between the sealing member and the display elements. It provides a transition zone that facilitates manufacturing by defining clear boundaries for material deposition and patterning, thereby reducing manufacturing failure rates.
3Strength
If a convex second bezel pattern is added to maintain structural stability, then the structural stability is improved, but the device complexity increases
Solution Approach 1:
The first and second bezel patterns are merged into a single integrated bezel structure that performs both structural and optical functions. This merging reduces device complexity by consolidating multiple elements into one cohesive component rather than treating them as separate systems.
Solution Approach 2:
The bezel pattern serves multiple functions simultaneously: it provides structural stability through its convex shape, defines the display area boundaries, enables optical signal transmission through the transmission area, and facilitates sealing. This multi-functionality reduces the need for additional separate components, thereby reducing overall device complexity.
Data Source
AI summary
A display module includes a window including a base substrate and a bezel pattern overlapping the base substrate in a plan view, and a display panel. The bezel pattern includes a first bezel pattern extending along an edge of the base substrate, and a second bezel pattern which extends from the first bezel pattern and of which at least a portion defines a transmission area. The display panel includes a glass substrate, an encapsulation substrate on the glass substrate, a sealing member coupling the glass substrate and the encapsulation substrate and overlapping the first bezel pattern in the plan view, a circuit element layer disposed on the glass substrate and including a transistor, and a display element layer disposed on the circuit element layer and including light emitting elements. The display element layer exposes a portion of a layer disposed thereunder, which corresponds to the transmission area.