Indented Substrate Display Device for Component Integration
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Solution Overview
Problem
There is a challenge in designing portable display devices with large screens that can accommodate various components such as camera modules, speakers, and sensors while maintaining a compact form factor, as existing solutions do not efficiently utilize the space around the display unit.
Innovation Solution
The display device incorporates a substrate with an indented shape, featuring a flexible printed circuit board connected to wiring films, an encapsulation layer with inorganic and organic layers, and strategically placed pad groups, allowing for the integration of components within the indented portions without interfering with the display unit, and includes a cover panel with a buffer material for stability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If the display unit is made large to increase screen size, then the display area is improved, but the available space for mounting components becomes insufficient
Solution Approach 1:
The substrate is divided into a display region and a non-display region, with the non-display region containing indented portions that provide dedicated spaces for mounting components. This segmentation allows the display unit to maintain a large display area while accommodating various components in the indented portions of the non-display region.
Solution Approach 2:
Indented portions are created by removing material from the substrate surface, adding vertical dimensionality to the layout. This allows components to be mounted in recessed areas without increasing the overall footprint of the display unit, effectively utilizing three-dimensional space within a two-dimensional plane.
2Adaptability or versatility
If components are mounted on the display unit, then functionality is improved, but the display area is reduced due to space occupation
Solution Approach 1:
The substrate has different functional zones: a display region optimized for visual output and non-display regions with indented portions optimized for component mounting. This local differentiation allows components to be placed in specific areas without interfering with the display area, maintaining both functionality and display size.
Solution Approach 2:
The display unit is segmented into distinct functional areas where the display region maintains its full display area while the non-display region contains indented portions for components. This segmentation ensures that component mounting does not encroach upon the display area.
3Adaptability or versatility
If the substrate shape is modified to accommodate components, then component integration is improved, but manufacturing complexity increases
Solution Approach 1:
The indented portions are created as discrete segmented features in the non-display region, allowing standard substrate fabrication processes to be used for the main display area while adding relatively simple recessed structures in specific locations. This segmented approach minimizes the impact on overall manufacturing complexity.
Data Source
Figure 1A
Figure 1B
Figure 1C~2
AI summary
A display device includes: a substrate (10) including a first indented portion (IP1) indented inward along one side of the substrate (10); a first pad group (11) and a second pad group (12) that are spaced apart from each other on the substrate (10) along the one side; a display unit (20) located on the substrate (10) and having a shape indented inward between the first pad group (11) and the second pad group (12); an encapsulation layer (30) encapsulating the display unit (20); a first wiring film (80-1) including a third pad group (81) connected to the first pad group (11); and a second wiring film (80-2) including a fourth pad group (82) connected to the second pad group (12). The first wiring film (80-1) and the second wiring film (80-2) are bent from a first surface of the substrate (10) to a second surface of the substrate (10) that is opposite to the first surface of the substrate (10), and the second wiring film (80-2) is spaced apart from the first wiring film (80-1).