Display Panel Sub-Pixel Layout for Higher Pixel Density
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional display panels face limitations in pixel density due to manufacturing process capabilities, making it difficult to further improve resolution and viewing angle.
Innovation Solution
The display panel design incorporates a configuration where each pixel unit comprises sub-pixels arranged along two different directions, reducing the number of sub-pixels in one direction, which allows for a narrower pixel unit width and increased sub-pixel width, thereby enhancing pixel density without altering the manufacturing process. This design also adjusts the position of connection holes between thin film transistors and pixel electrodes to increase the aperture ratio.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If sub-pixels are arranged side by side in a single direction to increase pixel density, then the manufacturing process capability is pushed to its extreme, but the pixel density cannot be significantly improved further
Solution Approach 1:
The patent transitions from arranging sub-pixels in a single linear direction to a two-dimensional arrangement where sub-pixels are positioned at vertices of rectangles formed by scan lines and data lines. This spatial reconfiguration allows sub-pixels to be connected to transistors through connection holes defined in non-sub-pixel regions, effectively utilizing the two-dimensional plane to increase pixel density without further straining single-directional manufacturing precision limits.
2Manufacturing precision
If the width of a single sub-pixel is minimized to increase pixel density, then the manufacturing process is pushed to its extreme capacity, but the pixel density improvement is limited
Solution Approach 1:
The patent repositions connection holes from being located within sub-pixel regions to being located in non-sub-pixel regions (such as regions between adjacent sub-pixels). This dimensional shift in connection hole placement allows for larger sub-pixel widths while maintaining high pixel density, thereby reducing manufacturing process complexity and improving yield without sacrificing pixel density goals.
Solution Approach 2:
The patent introduces non-sub-pixel regions as intermediary zones that host connection holes. These intermediary regions act as mediators between the sub-pixels and the transistor circuitry, allowing electrical connections to be established without requiring connection holes to penetrate through sub-pixel areas. This separation enables independent optimization of sub-pixel size and connection structure, reducing overall device complexity.
3Reliability
If connection holes are positioned within sub-pixel regions to connect transistors and pixel electrodes, then electrical connection is achieved, but the aperture ratio is reduced
Solution Approach 1:
The patent extracts connection holes from sub-pixel regions and relocates them to non-sub-pixel regions. By taking out the connection holes from areas that contribute to the aperture, the sub-pixel areas can be maximized without the reduction caused by connection hole openings. This separation ensures that electrical connections are maintained while aperture ratio is preserved or enhanced.
Solution Approach 2:
The patent moves connection hole placement from a one-dimensional constraint within sub-pixel boundaries to a two-dimensional solution in the surrounding non-sub-pixel regions. This allows connection holes to be positioned in areas that do not overlap with light-emitting sub-pixel regions, thereby maintaining full aperture area while ensuring reliable electrical connections through appropriately positioned connection holes.
Data Source
AI summary
A display panel and a display device are provided. The display panel includes a plurality of scan lines extending in a first direction, a plurality of data lines extending in a second direction, and a plurality of pixel units. Each of the pixel units comprises a first sub-pixel, a second sub-pixel, and a third sub-pixel disposed between adjacent two of the scan lines. The first sub-pixel and the second sub-pixel are arranged along the first direction, and the first sub-pixel and the third sub-pixel are arranged along the second direction.