Display Panel Spacer Layout for High-Resolution Pixel Spacing
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Solution Overview
Problem
Existing OLED display panels face challenges in achieving high-resolution designs while maintaining optimal pixel arrangement and spacing for efficient light emission and color mixing.
Innovation Solution
A display panel design featuring a base substrate with alternating columns of first and second spacers supporting sub-pixels, where the spacers have different areas and spacings, and anodes are arranged to optimize pixel alignment and spacing for improved light emission and color mixing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If an OLED display panel adopts an SPR pixel arrangement to achieve high-resolution design, then the resolution is improved, but the pixel spacing and arrangement optimization becomes more difficult
Solution Approach 1:
The pixel defining layer is divided into multiple regions with different thicknesses, creating first spacers and second spacers with different areas. This segmentation allows different pixel regions to have optimized spacing independently, resolving the conflict between high resolution and arrangement complexity by treating different pixel areas as separate optimizable units.
Solution Approach 2:
Different spacers are provided for different pixel regions based on their specific needs. The first spacers with larger area are placed in regions requiring greater spacing, while second spacers with smaller area are placed in regions where compact arrangement is needed. This local differentiation optimizes pixel arrangement for high resolution without uniform complexity throughout.
2Measurement precision
If pixel spacing is reduced to increase pixel density for high-resolution displays, then resolution is improved, but light emission efficiency and color mixing deteriorate
Solution Approach 1:
The pixel defining layer provides locally differentiated thickness to create spacers with different areas at different pixel locations. This ensures that each pixel region has optimal spacing for its specific function, maintaining light emission efficiency and color mixing performance even as overall pixel density increases for high resolution.
Solution Approach 2:
Instead of uniformly reducing pixel spacing in the plane, the invention introduces vertical dimension variation through different pixel defining layer thicknesses. This creates three-dimensional spacer structures that provide necessary spacing and light emission optimization without compromising the high horizontal pixel density required for resolution.
3Ease of manufacture
If uniform spacer design is used across all pixels, then manufacturing is simplified, but pixel alignment and spacing optimization deteriorates
Solution Approach 1:
The pixel defining layer is segmented into regions with different thicknesses, creating first and second spacers with different areas. While this segmentation increases design complexity, it actually simplifies manufacturing by using a single formation process that naturally creates the different spacer areas through photo patterning, rather than requiring multiple separate spacer formation steps.
Solution Approach 2:
The pixel defining layer thickness variation is predetermined in the design stage to create the required spacer area differences. This preliminary action ensures that when the pixel defining layer is formed, the different spacer areas are automatically created in their correct positions, achieving precise pixel alignment without requiring complex post-processing or adjustment.
Data Source
AI summary
A display panel and a display apparatus are provided. The display panel includes a supporting layer. The supporting layer includes first spacers and second spacers, which are located on different columns; an anode of at least one of sub pixels corresponding to first spacers extends in a first direction, the first and second spacers extend in a second direction; the first spacers and sub pixels are arranged alternately in the column direction and correspond one-to-one; an orthographic projection of first spacers does not overlap with that of anodes in all sub pixels in the column direction; a first ratio is formed between areas of the first spacers and openings of corresponding sub pixels, a second ratio is formed between an area of the second spacers and an area sum of the openings between two adjacent second spacers in the column direction, the first ratio is different from the second ratio.