Display Backplane Folded-Edge Layout for Narrower TV Bezels
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Solution Overview
Problem
Existing electronic devices, such as televisions, suffer from undesirably large widths of the middle frame and gaps between the frame and the display panel, which undermine the visual experience.
Innovation Solution
Decouple the folded edge part of the backplane from the expansion gap and reduce the spacing between the diffuser plate and the display panel, using a side frame member to form a narrower frame and gap, and employ a fastener to limit optical film movement, thereby reducing the width of the side frame member and gap.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If the backplane includes a folded edge part that forms the expansion gap, then the structural stability is ensured, but the width of the side frame member and gap increase
Solution Approach 1:
The backplane is segmented into a main body part and a folded edge part, allowing the expansion gap function to be isolated to the folded edge part while the main body part can be optimized for minimal width. This segmentation enables the side frame member to be narrower while maintaining structural stability through the dedicated folded edge part.
Solution Approach 2:
The expansion gap function is extracted from the main body of the backplane and assigned to the folded edge part. This extraction allows the main body to be minimized in width while the folded edge part specifically handles the expansion gap requirement, resolving the contradiction between structural stability and frame width.
2Length of stationary object
If the spacing between the diffuser plate and display panel is reduced, then the form factor is improved, but the risk of accidental damage to the display panel increases
Solution Approach 1:
The folded edge part of the backplane serves as a cushioning element positioned between the diffuser plate and the display panel. This beforehand cushioning structure provides protective buffering that allows reduced spacing while maintaining reliability by preventing direct contact and potential damage between the diffuser plate and display panel.
Solution Approach 2:
The folded edge part acts as an intermediary element between the diffuser plate and the display panel. This mediator structure enables the diffuser plate to be positioned closer to the display panel while the folded edge part absorbs mechanical stress and prevents direct damage, thus reducing form factor without compromising reliability.
3Length of stationary object
If the side frame member width is reduced, then the visual experience is improved, but the manufacturing precision requirements increase
Solution Approach 1:
The backplane is divided into a main body part and a folded edge part, with each having specific manufacturing requirements. The main body part can be manufactured with standard precision while the folded edge part is specifically designed to accommodate the expansion gap, thereby reducing overall manufacturing precision requirements while achieving narrow side frame width.
Solution Approach 2:
Different parts of the backplane have different quality requirements: the main body part requires minimal width while the folded edge part requires specific geometric properties for expansion gap formation. This local quality differentiation allows the side frame to be narrow without uniformly high manufacturing precision across the entire structure.
Data Source
AI summary
An electronic device includes a side frame member, a display panel, a diffuser plate, and a backplane. In a thickness direction of the display panel, the diffuser plate is disposed between the backplane and the display panel, and the side frame member separately surrounds the display panel, the diffuser plate, and the backplane. The backplane includes a main body part and a folded edge part located at an edge of the main body part. The folded edge part and the diffuser plate are respectively located on two opposite sides of the main body part in the thickness direction of the display panel. An expansion gap is located between the diffuser plate and the side frame member in a direction that is perpendicular to the thickness direction of the display panel.