OLED Substrate Merged Scan Lines Nano Silver
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Solution Overview
Problem
Top-emitting OLED display panels face challenges with excessive cathode resistance and low printing accuracy due to the non-transparent nature of nano silver traces, limiting the horizontal layout and line width of nano silver, and requiring a non-light-emitting region for pixel arrangement.
Innovation Solution
An organic light-emitting diode display substrate with a substrate comprising light-emitting and non-light-emitting regions, where data and scan lines are merged between adjacent pixel unit regions, allowing for a nano silver layer to be formed in grooves corresponding to the non-light-emitting region, enhancing printing accuracy and yield.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If nano silver traces are formed on transparent cathode to reduce cathode resistance, then cathode resistance is reduced, but printing accuracy decreases and yield is low
Solution Approach 1:
The patent changes the spatial arrangement of pixel units from a standard grid to a staggered configuration where pixel units in adjacent rows are offset. This dimensional reorganization creates extended horizontal spaces between pixel units, enabling nano silver traces to be printed with higher accuracy along the horizontal direction while maintaining cathode resistance reduction.
Solution Approach 2:
The patent segments the pixel array into multiple pixel units with different arrangement patterns in different row regions. Specifically, pixel units in first and second rows are arranged differently from those in third and fourth rows, creating varied horizontal spaces that optimize nano silver trace printing in different zones of the display panel.
2Illumination intensity
If pixel arrangement is optimized for blue sub-pixel aperture area, then screen brightness is improved, but horizontal layout space for nano silver is limited
Solution Approach 1:
The patent utilizes the horizontal dimension by staggering pixel units in adjacent rows, creating extended horizontal spaces between pixel units. This allows nano silver traces to be printed with sufficient line width while maintaining the required aperture area for blue sub-pixels to achieve high screen brightness.
3Area of moving object
If current pixel arrangement is used, then blue pixel aperture area is maximized, but printing accuracy of nano silver is low
Solution Approach 1:
The patent segments the pixel array into different row regions with varied pixel unit arrangements. Pixel units in first and second rows are offset from those in third and fourth rows, creating zones with different horizontal spacing that optimize both aperture area utilization and nano silver printing accuracy in different regions.
Solution Approach 2:
The patent introduces row-based staggering to create horizontal spaces between pixel units, transforming the vertical stacking constraint into a horizontal arrangement opportunity. This enables accurate nano silver printing while preserving the aperture area required for blue pixel performance.
Data Source
AI summary
An organic light-emitting diode display substrate, a manufacturing method of the same, and an organic light-emitting diode display device are disclosed by the application. The display substrate comprises a substrate, and the substrate comprises a light-emitting region and nonlight-emitting region, wherein the light-emitting region comprises a plurality of data lines and a plurality of scan lines which are arranged in rows and columns respectively and perpendicular to each other and a plurality of pixel unit regions defined by the plurality of data lines and the plurality of scan lines, wherein each of the pixel unit regions comprises a plurality of sub-pixels, the scan lines of each of the sub-pixels in adjacent pixel unit regions of the same row are merged between the adjacent pixel unit regions, and the data lines in adjacent pixel unit regions of the same column are merged between the adjacent pixel unit regions.