Array Substrate Layering for Data Routing and Interference Control
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Solution Overview
Problem
Existing OLED display technologies face challenges in optimizing the layout and connectivity of data lead lines and pixel driving circuits, leading to inefficiencies and potential interference, which affect the uniformity and brightness of light emission.
Innovation Solution
The array substrate design includes a unique arrangement of data lead lines and pixel driving circuits, with overlapping projections and varying extension directions, and a distinct separation of transistor and light-emitting regions, enhancing connectivity and reducing interference.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If data lead lines are arranged to connect data lines to integrated circuit, then connectivity is improved, but interference with light emitting elements increases
Solution Approach 1:
The patent utilizes multi-layer substrate architecture where data lead lines are positioned in different layers relative to light emitting elements. Specifically, data lead lines are arranged in a first substrate layer while light emitting elements are in a second substrate layer, allowing vertical stacking that provides both connectivity and spatial separation to minimize interference.
Solution Approach 2:
The patent extracts and separates the data lead line routing function from the light emitting element region by positioning data lead lines in peripheral areas and using dedicated connection regions. This separation allows data lead lines to be routed away from active display areas, reducing electromagnetic interference while maintaining electrical connectivity to integrated circuits.
2Area of stationary object
If data lead lines overlap with light emitting elements in projection, then space utilization is improved, but manufacturing precision requirements increase
Solution Approach 1:
The patent achieves overlapping projections by utilizing the third dimension (vertical layering) rather than horizontal planar arrangement. Data lead lines in a first substrate layer can project over light emitting elements in a second substrate layer, maximizing space utilization while the layered structure provides inherent alignment tolerance and reduces the stringency of lateral positioning requirements.
Data Source
AI summary
An array substrate is provided. The array substrate includes a plurality of light emitting elements, a plurality of pixel driving circuits configured to drive light emission in the plurality of light emitting elements, a plurality of data lines at least partially, and a plurality of data lead lines in a second region, the plurality of data lead lines electrically connecting the plurality of data lines to an integrated circuit. An orthographic projection of at least one light emitting element of the plurality of light emitting elements on a base substrate at least partially overlaps with an orthographic projection of the plurality of data lead lines on the base substrate.