Display Substrate Anode Layout for Under-Screen Transparency
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Solution Overview
Problem
In display devices with under-screen cameras, the opaque pixel driving circuits limit the area of transparent display regions, leading to restricted anode connection line routing and potential optical interference, which compromises the display quality and area of the transparent region.
Innovation Solution
The display substrate design includes anode connection hole rows along a third direction, allowing anode connection lines to be routed between these rows, increasing the diameter and area of the transparent display region while reducing line lengths and avoiding interference with other structures, thus enhancing display quality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If pixel driving circuits are arranged in traditional layouts, then the display function is achieved, but the area of transparent display region is limited and anode connection line routing is restricted
Solution Approach 1:
The patent introduces a third direction (inclined direction) for arranging anode connection holes, changing the traditional two-dimensional grid arrangement. This dimensional change allows anode connection lines to be routed along the third direction, increasing the transparent display region area while simplifying the routing path and reducing line lengths.
Solution Approach 2:
The patent segments the anode connection structure by creating multiple anode connection hole rows along the third direction, with each row containing multiple anode connection holes. This segmentation allows for systematic routing of anode connection lines between adjacent rows, optimizing both the transparent region area and the connection line layout.
2Reliability
If anode connection lines are routed in traditional directions, then connection is achieved, but optical interference and diffraction phenomena occur causing mura defects
Solution Approach 1:
The patent uses an asymmetric routing approach by introducing an inclined third direction (at a specific angle range) for anode connection holes, breaking the symmetry of traditional horizontal/vertical routing. This asymmetric arrangement reduces optical interference and diffraction effects that cause mura defects, while maintaining reliable electrical connections.
3Area of stationary object
If anode connection lines are routed to cover large areas, then all pixels are connected, but the line lengths become excessively long
Solution Approach 1:
By routing anode connection lines along the inclined third direction rather than following traditional horizontal or vertical paths, the patent creates more direct and efficient connection paths. This dimensional change reduces the total length of anode connection lines while maintaining comprehensive coverage of all pixel driving circuits and light-emitting structures.
Data Source
AI summary
A display substrate and a display device. The display substrate a base substrate and a first display region, a second display region and N anode connection lines on the base substrate; the first display region includes M first pixel driving circuits, M first connection holes, N second pixel driving circuits, and N second connection holes, the second display region includes N anode connection holes; N anode connection lines connect the N second connection holes with the N anode connection holes; the N anode connection holes form a plurality of anode connection hole rows along a third direction, a plurality of the anode connection holes in each of the anode connection hole rows are arranged along the third direction, the plurality of the anode connection hole rows are arranged along a direction perpendicular to the third direction.