Display Common Voltage Layout for Uniform Edge Voltage Distribution
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Solution Overview
Problem
Existing display apparatuses face challenges in optimizing the design of common voltage and driving voltage inputs to enhance display quality and efficiency, particularly in the peripheral areas outside the display area.
Innovation Solution
The display apparatus incorporates a substrate design with specific configurations of vertical and horizontal common voltage lines and driving voltage inputs, including protrusions and alternate arrangements, to optimize voltage distribution and reduce length disparities, enhancing electrical connectivity and efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Length of stationary object
If common voltage inputs are placed at the edge of the peripheral area, then the distance for voltage input is reduced, but voltage disparities in the display area increase
Solution Approach 1:
The common voltage input structure is segmented into multiple components: a first common voltage input at the edge, a second common voltage input at the central portion, and protrusions that divide the voltage distribution path. This segmentation allows each segment to serve a specific function in reducing voltage disparities across different regions of the display area.
Solution Approach 2:
Protrusions are introduced as intermediary structures that extend from the first common voltage input toward the display area. These protrusions act as mediators to distribute voltage more evenly by creating intermediate connection points with the second vertical common voltage line, thereby reducing voltage disparities between edge and central regions.
2Reliability
If driving voltage inputs are made long to reach the display area, then electrical connectivity is improved, but the length disparity between edge and central inputs increases
Solution Approach 1:
The voltage input structure implements local quality by providing different input configurations for different regions: the first common voltage input at the edge with protrusions for local voltage distribution, and the second common voltage input at the central portion for central region coverage. This allows each region to receive optimized voltage input according to its specific requirements.
Solution Approach 2:
The protrusions extend in a direction from the edge toward the display area, adding a spatial dimension to the voltage distribution. This dimensional extension creates multiple connection paths and reduces the effective length disparity by distributing voltage through a three-dimensional network rather than simple linear connections.
3Object-affected harmful factors
If common voltage inputs are spaced apart from driving voltage inputs, then electrical interference is reduced, but the complexity of voltage line arrangement increases
Solution Approach 1:
The arrangement of common voltage inputs and driving voltage inputs follows an asymmetric pattern where common voltage inputs are positioned at specific locations (edge and central portion) rather than uniformly distributed. This asymmetric arrangement naturally creates spacing between different voltage types while maintaining efficient voltage distribution, reducing the need for complex routing to avoid interference.
Data Source
AI summary
A display apparatus includes a substrate including a display area, and a peripheral area outside the display area, a driving voltage input in the peripheral area, a first vertical common voltage line and a second vertical common voltage line in the display area, and extending in a first direction, the second vertical common voltage line being at an edge of the display area, and common voltage inputs in the peripheral area, spaced apart from the driving voltage input, and including a common voltage input at an edge of the peripheral area including a protrusion extending toward the display area and extending to the second vertical common voltage line.