Display Panel Pixel Driver Signal Line Overlap
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Solution Overview
Problem
Display panels face challenges in reducing manufacturing costs while maintaining a sufficient display area, as integrating drivers with the panel can lead to a smaller visible display area due to increased bezel sizes.
Innovation Solution
The display panel design includes a pixel driver connected to multiple pixels with signal lines that overlap or are formed within the display area, with parts of the pixel driver positioned both in and out of the display area, and an insulating layer to prevent short circuits, allowing for efficient signal transfer and reduced non-display areas.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If the driver is integrated with the display panel, then manufacturing cost is reduced, but the bezel size increases and the display area appears smaller
Solution Approach 1:
The signal lines are routed through the thickness dimension of the display panel, overlapping with the pixel driver in the vertical direction rather than extending horizontally across the display area. This three-dimensional routing allows signal transmission without occupying additional planar space that would increase bezel width.
Solution Approach 2:
The signal lines are positioned within the structural footprint of the pixel driver by utilizing the vertical stacking arrangement. The signal lines are formed in layers that overlap with the pixel driver components, effectively nesting the signal transmission path within the existing driver structure rather than adding separate external routing.
2Device complexity
If the signal lines are routed outside the display area, then signal transfer is simplified, but the non-display area increases and the display area appears smaller
Solution Approach 1:
Instead of routing signal lines horizontally outside the display area, the patent utilizes the vertical dimension by forming signal lines that extend through the thickness of the panel and overlap with the pixel driver. This allows signal lines to be positioned within the display area footprint without increasing the planar non-display area.
Solution Approach 2:
The signal lines are divided into multiple segments that are formed at different vertical levels and connected through contact holes. This segmentation allows the signal lines to be routed through the pixel driver structure in a stepwise manner, maintaining compact integration within the display area.
Data Source
AI summary
A display panel includes a plurality of pixels positioned in the display area, a pixel driver connected with two or more of the plurality of pixels and configured to drive the connected pixels, and a plurality of signal lines configured to transfer signals to the pixel driver, in which at least one of the plurality of signal lines overlaps the pixel driver.