Display Device Substrate Dam for Crack and Moisture Protection
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Solution Overview
Problem
The existing display devices face issues of cracks and moisture penetration in the display area due to the removal of substrate portions for optical electronic devices, which deteriorate display quality and require a wider optical bezel area, reducing the display area.
Innovation Solution
A display device design that includes a substrate with a substrate extension and protrusion, forming a dam in the optical bezel area to prevent moisture and crack penetration, while maintaining the optical bezel area's width.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If at least a portion of the substrate is removed from the display area to increase display area size, then the display area increases, but cracks can occur and moisture can penetrate into the removed substrate area
Solution Approach 1:
The substrate is segmented into multiple regions: a first substrate region in the display area, a second substrate region in the optical bezel area, and a third substrate region extending between them. This segmentation allows the substrate to maintain structural integrity while accommodating the removal of substrate portions for optical electronic devices, preventing cracks from propagating through the entire substrate.
Solution Approach 2:
The third substrate region acts as an intermediary structure connecting the first and second substrate regions. This intermediate region serves as a transition zone that prevents direct exposure of the removed substrate area to moisture and crack propagation paths, thereby protecting the display area while maintaining the increased display area benefit.
2Adaptability or versatility
If the optical bezel area is widened to accommodate optical electronic devices, then optical electronic devices can be installed, but the display area size is reduced
Solution Approach 1:
The substrate extends in multiple dimensions: horizontally in the display area, vertically in the optical bezel area, and diagonally with the third substrate region extending from the first substrate region toward the second substrate region. This multi-dimensional substrate configuration allows optical electronic devices to be installed in the optical bezel area without reducing the display area, as the substrate provides structural support in three-dimensional space rather than requiring linear expansion of the bezel.
3Area of stationary object
If substrate portions are removed for optical electronic devices, then display area increases, but moisture can penetrate into the removed area deteriorating display quality
Solution Approach 1:
The remaining substrate regions (first, second, and third substrate regions) form a continuous protective film structure that covers and protects the removed substrate area. This substrate film acts as a flexible barrier preventing moisture penetration into the exposed areas where optical electronic devices are installed, while still allowing the display area to be increased through substrate removal.
Data Source
AI summary
A display device can include a substrate having a display area and a non-display area located adjacent to the display area. The substrate includes a substrate extension extending from an optical bezel area to a portion of an optical area, and a substrate protrusion protruding from the substrate extension, thereby preventing moisture penetration while reducing a bezel area.