Spliced Display Panel Seam Elimination via Back-Surface Mini-LED
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Solution Overview
Problem
The mini-LED technology faces challenges in large-size LCD products due to the height difference between the mini-LED and the LCD display, resulting in black shadows and poor display effects at the seams.
Innovation Solution
A spliced display panel design is implemented, where at least two first display modules are spliced together with a second display module positioned on the non-display surface, covering the spliced region to minimize height differences and eliminate seams.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If a mini-LED chip is pasted on the upper surface of the sealant position to achieve zero seam effect, then the seam visibility is improved, but the height difference between the mini-LED and LCD display increases, resulting in black shadows
Solution Approach 1:
The patent moves the light-emitting component from the front surface (upper surface of sealant) to the back surface (lower surface of sealant) of the display module. This dimensional relocation eliminates the height difference problem while maintaining the seam coverage function, as the light now emanates from behind the sealant rather than sitting on top of it.
Solution Approach 2:
The sealant serves as an intermediary medium that transmits light from the mini-LED positioned on its lower surface to the front display area. By placing the light source within the sealant structure rather than on its surface, the sealant mediates between the light source and the display, eliminating both the height difference and the direct visibility of the light-emitting component.
2Area of stationary object
If the mini-LED is positioned on the upper surface of the sealant, then the spliced region is covered, but the height difference with the LCD display surface increases
Solution Approach 1:
The patent relocates the mini-LED from the vertical dimension (upper surface) to the horizontal dimension (lower surface within the sealant structure). This allows the light-emitting component to maintain coverage of the spliced region area while eliminating the unwanted vertical height protrusion that causes display surface irregularities.
3Shape
If a second display module is added to cover the spliced region from the back, then the height difference is reduced, but the device structure becomes more complex
Solution Approach 1:
The patent merges the light-emitting function with the existing sealant structure by integrating the mini-LED into the sealant's lower surface. This consolidation eliminates the need for a separate second display module, achieving the flatness benefit while avoiding the structural complexity of adding an independent module.
Solution Approach 2:
The sealant structure serves multiple functions: it provides structural bonding between display modules, covers the spliced region, and now also serves as the mounting structure for the light-emitting component. This multi-functionality eliminates the need for additional dedicated structures, reducing overall device complexity.
Data Source
AI summary
A spliced display panel and a spliced display device are provided. In the spliced display panel, a second display module is disposed on a non-display surface of a first display module and corresponding to a spliced region.