Splicing Display Unit Side Binding for Seamless Edge
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Solution Overview
Problem
Large-sized display devices face challenges with poor display performance due to wide borders caused by the need for outer lead bonding areas in splicing panels, leading to low yield and issues with transportation and mounting.
Innovation Solution
A display unit with a base substrate extending from the display area to the edge area, featuring a first driving circuit layer and micro light-emitting elements connected to a binding part in the side binding area, which allows for seamless splicing by utilizing the edge area and improving space utilization.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If an outer lead bonding area is reserved in the frame area for bonding in a splicing display panel, then the bonding function is achieved, but the border of the display panel becomes wide, which affects the overall performance of the splicing display image
Solution Approach 1:
The patent moves the bonding area from the traditional frame area (2D plane at the edge) to the side surface of the display panel (3D vertical dimension). The binding part is disposed on the side surface of the base substrate, allowing bonding to occur vertically rather than horizontally, thus eliminating the need for wide borders while maintaining bonding functionality.
Solution Approach 2:
The patent introduces a binding part as an intermediary component that connects adjacent display panels. This binding part includes a conductive layer that electrically connects to the driving circuit layer, serving as a mediator for both mechanical bonding and electrical connection, thereby eliminating the need for traditional outer lead bonding areas.
2Ease of manufacture
If a wide border is reserved for outer lead bonding in splicing panels, then bonding is achieved, but the display performance and seamlessness of the splicing screen deteriorates
Solution Approach 1:
By transitioning the bonding interface from the horizontal frame area to the vertical side surface, the patent enables seamless splicing. The binding part on the side surface allows adjacent panels to be bonded edge-to-edge without visible gaps, achieving high splicing precision while maintaining manufacturing ease.
Solution Approach 2:
The patent divides the display panel structure into distinct functional areas: a display area for image display and a side binding area for bonding. This segmentation allows the bonding function to be isolated to the side surface, preventing it from interfering with the display quality and seamlessness of the splicing screen.
3Area of stationary object
If the edge area is fully utilized with micro light-emitting elements and binding parts, then space utilization rate improves, but the structural complexity increases
Solution Approach 1:
The binding part serves multiple functions: it provides mechanical bonding between adjacent panels, establishes electrical connections through its conductive layer, and defines the boundary of the display area. This multi-functionality reduces the need for separate components, thereby minimizing structural complexity while maximizing space utilization.
Solution Approach 2:
The patent merges the bonding function and electrical connection function into a single binding part structure. The binding part includes both mechanical bonding features and a conductive layer for electrical connection, combining multiple functions into one component to reduce overall structural complexity.
Data Source
AI summary
A display unit, a splicing screen, and a display device are provided. The display unit includes an edge area, and the edge area includes a mounting area and a side binding area. The display unit further includes: a first driving circuit layer located in the edge area and disposed on a side of the base substrate, a plurality of micro light-emitting elements disposed on the first driving circuit layer, and a binding part disposed in the side binding area and connected to the first driving circuit layer.