Driving Backplane Display Panel for Seamless Screen Splicing
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Solution Overview
Problem
Current super-large display screens suffer from relatively larger splicing gaps at the splicing sites due to the frames of sub-display screens used for splicing, which negatively impacts display quality by creating visible black lines.
Innovation Solution
A display panel and device design where each display component includes first bonding terminals on one side facing the driving backplane, allowing for electrical connection and signal transmission without the need for frames, thereby eliminating splicing gaps when components are spliced together.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If multiple sub-display screens are spliced together to form a super-large display screen, then the display area is increased, but splicing gaps appear at the splicing sites
Solution Approach 1:
The display system is divided into multiple independent display components, each with its own driving circuit integrated on the same substrate. This segmentation allows the display to be constructed from smaller units while minimizing splicing gaps through direct electrical connections via bonding terminals, eliminating the need for traditional frame structures that cause visible gaps.
Solution Approach 2:
The driving circuit and display component are merged into a single integrated structure where the driving circuit is formed on the same substrate as the display component. This merging eliminates the need for separate frames and bonding wires, allowing display components to be spliced directly together with minimal gaps, thus resolving the splicing gap problem while maintaining large display area.
2Reliability
If frames are provided for sub-display screens to hold bonding wires and driving circuits, then electrical connection is achieved, but the frames create visible splicing gaps
Solution Approach 1:
The bonding wires and driving circuits are extracted from the traditional frame structure and integrated directly onto the display component substrate. This extraction eliminates the frame structure that causes visible splicing gaps, while electrical connections are maintained through bonding terminals formed directly on the substrate surface, achieving reliable connection without compromising display appearance.
Solution Approach 2:
The electrical connection structure is transitioned from a three-dimensional frame structure to a planar structure on the substrate surface. Bonding terminals are formed on the same plane as the display component, allowing adjacent components to be spliced edge-to-edge without requiring protruding frames, thus eliminating visible gaps while maintaining electrical connectivity.
3Reliability
If bonding wires are used to connect driving circuits to display components, then electrical connection is established, but the wires and frames create splicing gaps
Solution Approach 1:
The bonding wires and driving circuits are merged with the display component substrate to form an integrated structure. The driving circuit is formed using the same thin-film fabrication processes as the display component, eliminating the need for separate wire bonding and frame structures. This integration allows components to be spliced directly together with minimal gaps while maintaining reliable electrical connections through on-substrate bonding terminals.
Data Source
AI summary
A display panel and a display device are provided. The display panel includes a driving backplane and a plurality of display components arranged in an array and on the driving backplane, and each of the display components includes a plurality of first bonding terminals and a plurality of signal lines, and each of the display components is electrically connected to the driving backplane through the plurality of first bonding terminals, and each of the signal lines is electrically connected to the corresponding first bonding terminal, respectively, to alleviate the technical problem that relatively larger splicing gaps exist at the splicing sites of the current super-large display screen.