Display Device Fan-Out Configuration Reduces Dead Space
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Display devices, particularly organic light-emitting display devices, face challenges in reducing dead space in the non-display area due to mismatched widths of driver units and display panels, leading to inefficient use of space and potential signal line stress issues.
Innovation Solution
A display device design featuring a fan-out configuration in the non-display area, where touch signal lines and power lines extend and overlap, with a common electrode covering the fan-out portion, reducing dead space and mitigating signal line stress through a multi-path structure and flexible materials.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If signal lines are disposed in the non-display area to connect driver unit with display panel, then electrical connection is achieved, but dead space increases
Solution Approach 1:
The patent applies fan-out configuration where touch signal lines extend in multiple directions (first direction and second direction) from a common point, transforming the traditional linear signal path into a two-dimensional distributed network. This allows signal lines to reach multiple touch electrodes simultaneously while utilizing the non-display area more efficiently, reducing dead space without compromising electrical connection reliability.
Solution Approach 2:
The touch line unit is divided into multiple sub-touch line units (first sub-touch line units and second sub-touch line units) that extend in different directions. This segmentation allows the signal lines to distribute to different regions of the display panel independently, enabling better space utilization in the non-display area while maintaining reliable electrical connections to multiple touch electrodes.
2Adaptability or versatility
If driver unit width differs from display panel width, then functional requirements are met, but non-display area increases
Solution Approach 1:
The fan-out configuration extends signal lines in both first and second directions from the driver unit, utilizing the non-display area in a two-dimensional manner. This approach accommodates the width mismatch between driver unit and display panel by distributing signal lines across the available non-display area, thereby reducing the overall non-display area while maintaining driver unit functionality.
3Reliability
If signal lines are concentrated in non-display area, then connection is achieved, but signal line stress increases
Solution Approach 1:
The touch line unit is segmented into multiple sub-touch line units extending in different directions. This segmentation distributes the mechanical stress and electrical load across multiple separate signal paths instead of concentrating them in a single bundle, thereby reducing signal line stress while maintaining reliable connections to touch electrodes.
Solution Approach 2:
By extending signal lines in multiple directions (first direction and second direction) rather than concentrating them in a single linear path, the fan-out configuration distributes mechanical stress across a larger area and multiple pathways, reducing the stress on individual signal lines while maintaining robust electrical connections.
Data Source
AI summary
Provided is a display device which comprises a display area, a non-display area on an outer side of the display area, a data line unit comprising a plurality of data lines, a power line unit disposed over the plurality of data lines and comprising a plurality of power lines, and a touch line unit disposed over the power line unit, comprising a plurality of touch lines and comprising a fan-out portion. The display device has a fan-out configuration in its non-display area, thereby reducing the dead space.