Display Substrate Column-Unit Data Line Layout for Stable Subpixels
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Solution Overview
Problem
The stability of subpixel driving circuits in display products is compromised due to changes in data signals transmitted through data lines, affecting the overall display quality.
Innovation Solution
The arrangement of data lines at opposite sides of column units in a display substrate, with subpixel driving circuits alternately coupled to these lines, ensures stability by minimizing the influence of signal changes on key nodes, reducing power consumption, and simplifying layout complexity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If data lines are arranged close to subpixel driving circuits to simplify layout, then layout complexity is reduced, but the stability of key nodes in the subpixel driving circuit is greatly influenced by data signal changes
Solution Approach 1:
The display substrate is divided into multiple column units, with each column unit containing multiple driving circuit columns. Data lines are selectively arranged at different sides of different column units, creating a segmented layout pattern that balances complexity and stability requirements across different regions of the display.
Solution Approach 2:
Different column units have different data line arrangements - some column units have data lines at the first side, others at the second side, and others at both sides. This local variation in layout quality allows optimization of signal stability in specific regions while maintaining overall layout efficiency.
2Reliability
If data lines are positioned to minimize interference with key nodes, then stability of subpixel driving circuits is improved, but the layout complexity increases
Solution Approach 1:
The display is segmented into multiple column units with alternating data line arrangements. This segmentation allows the system to achieve good signal stability through the alternating pattern while the modular structure keeps the overall layout manageable and not excessively complex.
Solution Approach 2:
The data line arrangement exhibits asymmetry between adjacent column units - when one column unit has data lines at the first side, the adjacent column unit has data lines at the second side. This asymmetric alternating pattern creates regular alternation that improves stability while maintaining layout regularity.
3Loss of energy
If data lines are arranged alternately at opposite sides of column units, then power consumption is reduced and stability is enhanced, but the layout design becomes more complex
Solution Approach 1:
The display substrate is divided into multiple column units that can be independently designed with alternating data line arrangements. This segmentation allows the power consumption benefits to be achieved through the alternating pattern while the modular column unit structure keeps the overall layout design systematic and manageable.
Solution Approach 2:
The data line arrangement follows a periodic alternating pattern across adjacent column units. This periodic alternation creates regularity in the layout that simplifies the design process while achieving the power consumption reduction and stability enhancement benefits.
Data Source
AI summary
A display substrate and a display device are provided. The display substrate includes a base substrate, and a plurality of subpixels and a plurality of data lines arranged on the base substrate. The subpixel includes a subpixel driving circuit and a light-emitting element coupled to each other. A plurality of subpixel driving circuits included in the plurality of subpixels includes a plurality of driving circuit columns, the driving circuit column includes a plurality of subpixel driving circuits arranged in a first direction, the plurality of driving circuit columns includes a plurality of column units, and the column unit includes at least two adjacent driving circuit columns. The data line coupled to the subpixel driving circuits in the column unit are arranged at a first side and/or a second side of the column unit, the first side is opposite to the second side in a second direction intersecting the first direction.