Display Panel Pad Layout With One-to-Many Power Pads
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Solution Overview
Problem
Display devices face challenges in reducing the number of pad parts and increasing the interval between them to enhance power supply efficiency and secure a process margin.
Innovation Solution
The display device includes a display panel with a scan area and a power area, featuring a first pad part with line pad parts connected one-to-one to lines and a second pad part with a power pad part connected one-to-many to power lines, allowing for efficient power supply through a reduced number of line pad parts.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the number of pad parts is reduced and the interval between them is increased, then power supply efficiency is improved and process margin is secured, but the complexity of pad part configuration increases
Solution Approach 1:
The patent combines multiple line pad parts into a single power pad part that can electrically connect to multiple power lines simultaneously. This merging approach reduces the total number of pad parts while maintaining adequate power supply to multiple lines, thereby improving power supply efficiency and securing process margin without excessive complexity increase.
Solution Approach 2:
The power pad part is designed with multi-functional capability to electrically connect to multiple power lines (one-to-many connection). This universal pad part can serve multiple lines simultaneously, reducing the overall number of pad parts needed while maintaining reliable power distribution across the display panel.
2Reliability
If multiple line pad parts are used to connect to each power line individually, then the connection is simple and reliable, but the number of pad parts increases and the interval between them decreases
Solution Approach 1:
Multiple line pad parts that would individually connect to separate power lines are merged into a single power pad part. This consolidated pad part maintains reliable electrical connection to multiple power lines through its multi-functional design, thereby reducing the quantity of pad parts while preserving connection reliability.
Solution Approach 2:
The power pad part is designed as a universal connector that can electrically connect to multiple power lines simultaneously. This multi-functional capability allows a single pad part to replace multiple individual line pad parts, reducing the total number of pad parts needed in the display device.
3Manufacturing precision
If the interval between pad parts is increased, then process margin is secured and manufacturing tolerance is improved, but the area occupied by pad parts increases
Solution Approach 1:
By merging multiple line pad parts into a single power pad part, the total area occupied by pad parts is reduced. This consolidation allows for increased spacing between the remaining pad parts, thereby improving process margin and manufacturing precision without excessive area consumption.
Solution Approach 2:
The universal power pad part that can connect to multiple power lines simultaneously reduces the total number of pad parts required. This reduction in pad part quantity decreases the overall area occupied by pad parts, allowing for increased intervals between them and improved manufacturing tolerance.
Data Source
AI summary
A display device comprises a display panel including a display area having a scan area and a power area disposed on a side of the scan area, and a non-display area surrounding the display area and having a pad part. The pad part includes a first pad part including a plurality of line pad parts electrically connected one-to-one to lines of the scan area, and a second pad part including a plurality of line pad parts electrically connected one-to-one to lines of the power area, and a power pad part electrically connected one-to-many to lines of the power area.