Organic Electroluminescent Display Panel Sub-Pixel Segmentation
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing organic electroluminescent display devices face challenges in achieving high resolution and accurate Mask alignment due to limitations in thin film deposition methods, particularly in manufacturing large-size devices with low Mask alignment accuracy and low material utilization ratios.
Innovation Solution
The solution involves an organic electroluminescent display panel with sub-pixel units comprising 6 sub-pixel elements of the same color, arranged to form equilateral triangles, which increases Mask alignment accuracy and enhances resolution by 6 times compared to prior art, utilizing a substrate with thin film transistors and drive circuits for precise light emission control.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If vacuum evaporation is used for manufacturing organic electroluminescent display devices, then film-forming uniformity is improved, but Mask alignment accuracy deteriorates for large size products
Solution Approach 1:
The invention divides each pixel into multiple sub-pixels (e.g., 2x2 arrangement with 4 sub-pixels per pixel, or 3x3 arrangement with 9 sub-pixels per pixel). This segmentation allows the Mask to cover larger areas while maintaining alignment accuracy, as each sub-pixel can be independently controlled and the overall pixel resolution is enhanced through the combined effect of multiple sub-pixels.
Solution Approach 2:
The invention transitions from traditional single-subpixel per pixel arrangement to multi-subpixel arrangements in both horizontal and vertical dimensions (e.g., 2x2, 3x3 grids). This dimensional expansion increases the number of light-emitting elements without proportionally increasing Mask complexity, as the segmented structure allows for more flexible Mask design and alignment tolerances.
2Device complexity
If traditional pixel designs are used, then device complexity is reduced, but resolution improvement is limited
Solution Approach 1:
Each pixel is segmented into multiple sub-pixels arranged in systematic patterns (2x2, 3x3, or other configurations). This segmentation increases the effective resolution by 4 times (2x2) or 9 times (3x3) compared to traditional single-subpixel designs, while maintaining relatively simple control through the use of shared electrode structures and systematic addressing schemes.
Solution Approach 2:
Multiple sub-pixels within each pixel share common electrode structures and control signals, merging certain functional elements to reduce overall device complexity. For example, adjacent sub-pixels may share common electrode patterns or control lines, allowing the system to achieve high resolution without proportionally increasing the number of independent control circuits.
3Measurement precision
If sub-pixel units include multiple sub-pixel elements of the same color, then Mask alignment accuracy is improved, but device complexity increases
Solution Approach 1:
The pixel structure is segmented into multiple sub-pixels with identical color characteristics arranged in systematic patterns. This segmentation improves Mask alignment accuracy because the Mask can be designed to cover larger areas with repeated identical patterns, reducing the impact of alignment errors. The complexity is managed through the regularity and predictability of the segmentation pattern.
Solution Approach 2:
Each sub-pixel within a pixel is designed with identical local characteristics (same color, same structure), creating local homogeneity that simplifies Mask design and alignment. The overall pixel achieves diversity through the combination of multiple identical local units, allowing the Mask to treat each sub-pixel uniformly while the collective arrangement provides the desired color and resolution characteristics.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This approach significantly improves the resolution of organic electroluminescent display panels by increasing Mask alignment accuracy and enabling high-precision patterning, facilitating the production of high-resolution display devices with improved film-forming uniformity and reduced equipment costs.
Implementation Method 1
an organic electroluminescent material layer is provided between the anode layer and the cathode layer to produce electroluminescence
Data Source
AI summary
The invention provides an organic electroluminescent display panel and a display device. The organic electroluminescent display panel of the invention includes a substrate, and a plurality of sub-pixel units of the same shape formed on the substrate, each sub-pixel unit including 6 sub-pixel elements of the same color, the geometric shape of each sub-pixel element being such that the center of the sub-pixel unit where it is located is taken as a vertex; the sub-pixel units are in 3 colors, any two adjacent sub-pixel units being different in color; the connecting lines of the centers of every two adjacent sub-pixel units among 3 sub-pixel units adjacent to each other form an equilateral triangle, 3 sub-pixel elements defined by that equilateral triangle form one pixel unit.