Zigzag Subpixel Layout for High-Resolution Display Panels
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Solution Overview
Problem
Current display devices face challenges in achieving extremely high resolution, higher display quality, improved viewing angle characteristics, higher aperture ratio, and a novel structure while maintaining reliability, especially in portable information terminals where space and manufacturing complexity are concerns.
Innovation Solution
A display device design featuring a matrix arrangement of pixel units with specific transistor configurations and wiring connections, allowing for a reduced pixel area and efficient use of resources, including top-gate transistors and shared wirings, to enhance resolution and viewing angles without compromising aperture ratio or manufacturing yield.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the number of pixels is increased to achieve higher resolution, then the resolution is improved, but the area occupied by each pixel is reduced making manufacturing more difficult
Solution Approach 1:
The pixel array is segmented into multiple banks, with each bank containing a subset of pixels that can be independently addressed and manufactured. This segmentation allows the overall high-resolution display to be constructed from multiple manageable units, reducing the manufacturing complexity of individual pixel regions while maintaining high overall resolution.
Solution Approach 2:
The patent introduces a bank selection dimension in addition to the row and column dimensions. By adding this fourth dimension (bank selection signals), the system can address individual pixels within each bank independently, allowing high resolution to be achieved through multiple smaller banks rather than requiring each individual pixel to be extremely small and difficult to manufacture.
2Measurement precision
If the pixel area is reduced to increase resolution, then the resolution is improved, but the aperture ratio is reduced affecting display quality
Solution Approach 1:
By dividing the display into multiple banks, each pixel within a bank can have a larger effective aperture ratio since the pixel area is not constrained by the need to pack extremely high densities across the entire display. The segmentation allows each local region to optimize for aperture ratio while the overall system achieves high resolution through the combination of multiple banks.
Solution Approach 2:
The bank selection dimension provides an additional degree of freedom that allows the system to achieve high resolution without requiring each individual pixel to be minimized. This enables pixels to maintain larger areas with better aperture ratios while the multi-dimensional addressing scheme ensures high overall display resolution.
3Measurement precision
If more transistors and wirings are added to control more pixels, then the resolution is improved, but the device complexity is increased
Solution Approach 1:
The transistor and wiring networks are segmented into multiple banks, with each bank having its own subset of control lines and transistors. This segmentation reduces the complexity of individual bank circuits compared to a fully integrated high-resolution display, as each bank can be designed and manufactured independently with simpler internal wiring and fewer transistors per pixel.
Solution Approach 2:
The patent adds a bank selection dimension to the addressing scheme, which allows the same row and column wiring patterns to be reused across multiple banks. This dimensional extension enables high-resolution control without proportionally increasing the total number of unique transistors and wirings, as the bank selection signals multiplex the control across different spatial regions.
4Measurement precision
If the pixel density is increased for higher resolution, then the resolution is improved, but the manufacturing yield is reduced
Solution Approach 1:
By dividing the display into multiple banks, the manufacturing process can be applied to each bank independently. This segmentation means that defects in one bank do not necessarily affect the entire display, and each bank can be manufactured with more relaxed precision requirements, thereby improving overall manufacturing yield while still achieving high resolution through the combination of multiple banks.
Solution Approach 2:
The bank selection dimension provides a way to achieve high resolution without requiring extremely high manufacturing precision across the entire display area. By distributing the resolution requirement across multiple independently manufacturable banks, the system can achieve high overall resolution while each individual bank is manufactured with more achievable precision levels, improving yield.
Data Source
AI summary
Provided is a display device with extremely high resolution, a display device with higher display quality, a display device with improved viewing angle characteristics, or a flexible display device. Same-color subpixels are arranged in a zigzag pattern in a predetermined direction. In other words, when attention is paid to a subpixel, another two subpixels exhibiting the same color as the subpixel are preferably located upper right and lower right or upper left and lower left. Each pixel includes three subpixels arranged in an L shape. In addition, two pixels are combined so that pixel units including subpixel are arranged in matrix of 3×2.