Display Device Pad Area Protrusion for Asymmetric Layout
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Solution Overview
Problem
Display devices often have uneven non-display areas on both sides, leading to differences in size and complexity in the arrangement of fan-out lines and scan drivers, which can affect the display's performance and design efficiency.
Innovation Solution
The display device includes a display panel with a pad area that protrudes from the non-display area, allowing for the overlap of power supply lines with connection lines and the placement of scan drivers in the pad area, reducing parasitic capacitance and minimizing the width difference between non-display areas on both sides.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If pads are formed at a side of the display panel, then electrical connections are established, but the non-display area becomes uneven in size on both sides
Solution Approach 1:
The patent accepts and utilizes the asymmetric structure caused by pad placement at one side of the display panel. The design accommodates the uneven non-display area by strategically positioning the scan driver and fan-out lines in the larger non-display area, transforming the asymmetric constraint into a workable layout solution.
2Reliability
If fan-out lines are arranged in the non-display area, then electrical connections are established, but the arrangement becomes complex and affects display performance
Solution Approach 1:
The patent utilizes the extra space in the non-display area as an additional dimension for routing fan-out lines. By extending the available area through strategic pad placement and utilizing the larger non-display region, the design provides more routing space and reduces line complexity.
3Ease of manufacture
If the non-display area is enlarged to accommodate components, then component placement is facilitated, but the width difference between both sides increases
Solution Approach 1:
The patent applies local quality by concentrating scan drivers and fan-out lines in the larger non-display area on one side, while keeping the other side's non-display area compact. This localized component placement strategy facilitates manufacturing and assembly while accepting the asymmetric width difference as a necessary design compromise.
Data Source
AI summary
A display device may include a display panel including a display area, a non-display area which may be disposed on a periphery of the display area, and a pad area which may be disposed on one side of the non-display area. The display panel may include data lines disposed in the display area of the display panel along a second direction which intersects a first direction, and connection lines disposed in the display area of the display panel along the first direction. A first data line among the data lines may be connected to a first connection line among the connection lines.