Display Substrate Touch-Line Winding for Uniform Resistance
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing OLED display technologies face challenges in achieving uniform resistance among touch-control lines due to inconsistent lengths and spatial distribution, leading to variations in electrical performance and requiring wider non-display areas.
Innovation Solution
The display substrate incorporates conductive winding portions for touch-control lines, arranged in independent and nested manners, ensuring consistent resistance and utilizing space efficiently without increasing the non-display area width, with specific dislocation structures to manage wiring and avoid short circuits.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If touch-control lines are arranged in the non-display area, then touch-control function is integrated, but resistance uniformity deteriorates due to inconsistent line lengths
Solution Approach 1:
The patent applies nested winding structures where conductive winding portions are arranged in nested patterns within the non-display area. This nesting allows multiple touch-control lines to share spatial space efficiently while maintaining controlled path lengths, thereby achieving both function integration and resistance uniformity.
Solution Approach 2:
The patent modifies the geometric parameters of touch-control lines by introducing conductive winding portions with specific winding radii and patterns. By adjusting these geometric parameters, the line lengths are standardized despite different spatial arrangements, ensuring uniform resistance across all touch-control lines.
2Manufacturing precision
If non-display area width is increased, then touch-control line resistance can be standardized, but device compactness deteriorates
Solution Approach 1:
The nested winding structure allows multiple touch-control lines to be packed into a compact non-display area. By nesting the conductive winding portions, the patent achieves resistance uniformity without requiring excessive horizontal space, thus maintaining device compactness.
Solution Approach 2:
The patent transitions from simple linear arrangements to two-dimensional winding patterns in the non-display area. By utilizing vertical and diagonal dimensions through winding structures, the patent achieves standardized resistance paths without increasing the overall width of the non-display area.
3Manufacturing precision
If conductive winding portions are added to standardize resistance, then electrical performance improves, but structure complexity increases
Solution Approach 1:
The nested winding pattern provides a systematic approach to managing wiring complexity. By organizing conductive winding portions in nested layers, the patent creates a regular, repeatable structure that is easier to manufacture and control compared to irregular winding patterns, thus mitigating the increase in structural complexity.
Solution Approach 2:
The patent standardizes the geometric parameters of conductive winding portions (such as winding radius and turn count) to achieve uniform resistance. By using consistent parameter values across different lines, the patent simplifies the manufacturing process and reduces the complexity of designing and fabricating the wiring structure.
Data Source
AI summary
A display substrate includes: a base substrate, including a display area and a non-display area around the display area; a blocking dam, located in the non-display area and arranged surrounding the display area; multiple touch-control lines, located in the non-display area, at least some touch-control lines comprise conductive winding portions; an orthographic projection of a conductive winding portion on the base substrate is between an orthographic projection of the blocking dam on the base substrate and the display area; the at least some touch-control lines comprise multiple first touch-control lines and second touch-control lines, a conductive winding portion of at least one first touch-control line of the first touch-control lines is arranged in an independent winding manner, and a conductive winding portion of at least one second touch-control line of the second touch-control lines are arranged in a mutually nested winding manner.