Display Panel Connecting Line Layout for Uniform AOD Reflectivity
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Solution Overview
Problem
Conventional display panels face issues with picture non-uniformity in the always on display (AOD) state due to fan-out lines reflecting ambient light, leading to differences in reflectivity between areas with and without fan-out lines, which are disposed in the display and non-display areas, respectively.
Innovation Solution
The display panel design includes connecting lines arranged in the display area to connect data lines with pads, with these lines extending beyond the lateral center of the display area, reducing the need for fan-out lines in the non-display area and minimizing reflectivity differences by ensuring uniform pattern density.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Length of stationary object
If fan-out lines are disposed in the display area to reduce the width of the lower frame, then the width of the lower frame is reduced, but the fan-out lines may reflect ambient light, which results in differences in reflectivities to the ambient light between the display area where the fan-out lines are located and other display areas with no fan-out lines provided, and thus a problem of picture non-uniformity in an always on display (AOD) state
Solution Approach 1:
The connecting line extends in the first direction (horizontal dimension) beyond the lateral center of the display area, utilizing the horizontal dimension to distribute the line across different vertical positions. This dimensional approach allows the line to span from the lower display area through the lateral center to the upper display area, thereby distributing its presence across multiple vertical zones and reducing localized pattern density variations that cause reflectivity differences.
Solution Approach 2:
The patent applies different arrangement strategies to different regions: in the lower display area, connecting lines are arranged to connect data lines to pads; in the upper display area, the same connecting lines continue to extend, creating a distributed pattern. This local differentiation ensures that no single region has excessive pattern density, thereby reducing reflectivity differences across the display area while maintaining electrical connectivity functions.
2Object-affected harmful factors
If fan-out lines are disposed in the non-display area, then the display area maintains uniform pattern density, but the fan-out lines consume a large space in the lower frame, which leads to a large width of the lower frame and affects appearance
Solution Approach 1:
The patent merges the functions of fan-out lines (traditionally confined to the non-display area) with data lines (located in the display area) by allowing the connecting line to extend across the lateral center of the display area. This merging enables the connecting line to serve dual purposes: maintaining electrical connectivity in the non-display area while distributing pattern density in the display area, thereby eliminating the need for a wide lower frame.
Data Source
AI summary
A display panel and a display apparatus are provided. The display panel includes a plurality of data lines each and a plurality of connecting lines that are located in a display area, and a plurality of pads located in a non-display area. Each of the plurality of data lines extends in a first direction. Each of the plurality of connecting lines has a first end connected with one of the plurality of data lines, and a second end connected with one of the plurality of pads. The display area includes a first boundary close to the pads. The connecting line includes a first segment extending from the first boundary into the display area in the first direction. At least one connecting line has a length D1 in the first direction, and the display area has a length D0 in the first direction. D1 is greater than D0/2.