Splicing Display Tape Layer Peripheral Positioning
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Solution Overview
Problem
Splicing display devices face issues with tape failure, leading to problems such as upwarp, light leakage, and operational difficulties due to inadequate bonding and attachment of light shielding tapes.
Innovation Solution
The display device incorporates a tape layer positioned on the peripheral side of the display panel and backlight module, with the tape layer's orthographic projection not overlapping with the display panel's projection, ensuring proper attachment and preventing upwarp. Additionally, a light shielding adhesive layer is used in an L-shaped groove to prevent light leakage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If the tape layer is positioned to overlap with the display panel projection, then light shielding coverage is improved, but tape upwarp and bonding failure occur
Solution Approach 1:
The tape layer is repositioned from overlapping the display panel projection to surrounding it peripherally, changing the spatial arrangement from a two-dimensional overlap to a three-dimensional peripheral configuration. This dimensional change allows the tape to shield light effectively without causing upwarp or bonding failure on the display panel surface.
Solution Approach 2:
The bonding region acts as an intermediary structure between the display panel and the tape layer. By providing a dedicated bonding region with enhanced adhesion properties, the tape can be securely attached without directly bonding to the display panel, thus preventing tape failure while maintaining light shielding functionality.
2Reliability
If the tape layer is positioned peripherally without overlapping the display panel, then tape bonding stability is improved, but light shielding coverage is reduced
Solution Approach 1:
The light shielding function is segmented between the tape layer and the bonding region. The tape layer provides structural support and partial shielding, while the bonding region provides additional shielding and secure attachment. This segmentation allows each component to optimize its function without compromising the other.
Solution Approach 2:
The tape layer and bonding region are merged into an integrated structure where the tape is attached to the bonding region. This combination creates a unified light shielding system that maintains tape stability while ensuring comprehensive light coverage through the collaborative function of both components.
3Reliability
If the bonding region is enlarged to improve tape attachment, then device complexity increases, but manufacturing precision requirements increase
Solution Approach 1:
The bonding region is designed with localized enhanced properties only where needed for tape attachment, rather than uniformly across the entire display panel. This local quality approach improves tape attachment in specific critical areas while maintaining standard manufacturing precision requirements for the rest of the device.
Data Source
AI summary
The present disclosure provides a display device, a splicing display device, the display device includes: a display panel including a display region and a non-display region surrounding the display region, the non-display region including a bonding region; a backlight module disposed opposite to the display panel; a tape layer located on a peripheral side of the display panel and the backlight module, and an orthographic projection of the tape layer on a plane where the display device is located is not overlapped with an orthographic projection of the display panel on the plane where the display device is located.