Splicing Display Screen With Buried Driving ICs
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Solution Overview
Problem
Current display splicing technology faces issues with visible splicing gaps and poor driving display effects, leading to suboptimal performance in large-sized and special-shaped displays.
Innovation Solution
The proposed splicing display screen features sub-areas with buried driving ICs in grooves, connected via metal pads through via-holes, and series-connected IC rows/columns to a control unit, ensuring seamless splicing without thickness increase and protecting ICs from corrosion.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If multiple display screens are spliced to achieve large-sized display, then the screen size is increased and manufacturing flexibility is improved, but visible splicing gaps appear and manufacturing precision deteriorates
Solution Approach 1:
The display system is divided into multiple independent display modules, each with its own driving IC. This segmentation allows flexible arrangement to achieve large-sized displays while maintaining manufacturing precision through standardized module interfaces that minimize visible gaps.
Solution Approach 2:
The driving IC is embedded within the display module structure, with the IC positioned in a recessed area of the module. This nesting approach integrates the driving component into the module itself, eliminating external connections that would create visible splicing gaps between modules.
2Ease of manufacture
If driving ICs are exposed on the display surface, then electrical connection is simplified, but the ICs are exposed to corrosion and oxidation from water vapor
Solution Approach 1:
The driving IC is nested within a recessed cavity in the display module, completely enclosed by the module structure. This embedding protects the IC from direct exposure to water vapor and environmental factors while maintaining electrical connections through conductive vias that pass through the module layers.
Solution Approach 2:
The display module structure creates a protective environment around the driving IC, isolating it from corrosive water vapor. The encapsulation and sealing of the module effectively provide an inert barrier that prevents oxidation and corrosion of the IC components.
3Reliability
If driving ICs are arranged in series rows or columns, then IR Drop risk is reduced and display reliability is improved, but device complexity increases
Solution Approach 1:
The driving ICs are organized into segmented series rows or columns within the module array. This segmentation into structured groups simplifies the connection pattern while achieving reliable current distribution and reduced IR Drop through systematic series connections of multiple ICs.
Data Source
AI summary
A splicing display screen defined with a plurality of sub-areas is provided. The splicing display screen includes a first substrate, a first metal layer, a plurality of driving ICs, a control unit, and a plurality of display screen units. The first metal layer is disposed on the first substrate, and each driving IC is buried in a groove of a corresponding sub-area and is electrically connected to a circuit of the first metal layer. The control unit is electrically connected to the plurality of driving ICs, and the plurality of display screen units correspond to the plurality of sub-areas in a one-to-one manner. The plurality of display screen units are disposed on the first metal layer and electrically connected to the first metal layer.