Display Substrate Pixel Opening Layout for Signal Line Overlap
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Solution Overview
Problem
Existing display technologies face challenges in efficiently driving flexible display substrates with overlapping signal lines and pixel openings, leading to potential electrical interference and reduced display performance.
Innovation Solution
The display substrate design includes overlapping orthographic projections of pixel opening edges with signal lines, such as power supply, data, and compensation signal lines, and a method for processing drive signals in transition regions to optimize signal distribution across sub-pixels.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If signal lines are routed through transition regions with pixel openings, then electrical connectivity is improved, but electrical interference increases
Solution Approach 1:
The patent applies different design strategies to different regions of the display substrate. In transition regions where pixel openings are present, signal lines are routed with specific spacing and shielding configurations that differ from normal display regions. This local differentiation allows optimal electrical connectivity in transition regions while minimizing interference through region-specific design parameters.
Solution Approach 2:
The patent introduces shielding structures and grounding elements as intermediary components between signal lines and pixel openings in transition regions. These intermediary elements act as mediators that maintain electrical connectivity while blocking or redirecting electromagnetic interference, thus resolving the contradiction between connectivity and interference.
2Ease of manufacture
If pixel openings are positioned to overlap with signal lines, then manufacturing complexity is reduced, but display performance deteriorates
Solution Approach 1:
The patent implements local quality by applying different design rules to transition regions versus normal display regions. In transition regions, pixel openings are allowed to overlap with signal lines to simplify manufacturing. In normal display regions, stricter spacing rules maintain optimal display performance. This spatial differentiation resolves the contradiction by allowing manufacturing simplicity only where it does not compromise display quality.
Solution Approach 2:
The patent segments the display substrate into transition regions and normal display regions with distinct design characteristics. This segmentation allows the manufacturing process to be optimized in transition regions without adversely affecting the performance-critical normal display regions, thus resolving the contradiction between ease of manufacture and display performance.
3Reliability
If drive signals are processed in transition regions, then signal distribution consistency is improved, but processing complexity increases
Solution Approach 1:
The patent applies preliminary action by pre-processing drive signals before they reach transition regions. Compensation circuits and signal conditioning elements are positioned upstream to adjust signal characteristics in advance, ensuring consistent signal distribution through transition regions without requiring complex real-time processing within the transition regions themselves.
Solution Approach 2:
The patent introduces intermediary signal processing elements such as compensation circuits and buffering structures that mediate between the drive signal source and the transition regions. These intermediaries handle the complex processing requirements, allowing the transition regions themselves to remain relatively simple while still achieving signal distribution consistency.
Data Source
AI summary
A display substrate, a driving method therefor, and a display apparatus, a driving apparatus and a medium. The display substrate comprises multiple sub-pixels, each sub-pixel comprises a pixel driving circuit and a light-emitting device, the light-emitting device at least comprises a first electrode and a pixel definition layer, the first electrode is connected to the pixel driving circuit, and a pixel opening exposing the first electrode is provided in the pixel definition layer; the pixel opening at least comprises a first opening edge and a second opening edge, and the pixel driving circuit is connected to at least one signal line; and in at least one sub-pixel, the orthographic projection of at least one of the first opening edge and the second opening edge on the plane of the display substrate at least partially overlaps with the orthographic projection of the signal line on the plane of the display substrate.