Virtual Pixel Structure for Sub-0.9 mm COB Display Resolution
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Solution Overview
Problem
Conventional COB display panels face challenges in reducing pixel pitch below 0.9 mm, which limits resolution improvement and increases costs due to the need for more pixels.
Innovation Solution
A pixel structure utilizing virtual pixel technology, where real pixels are time-multiplexed to create additional virtual pixels, achieving a resolution four times that of a real pixel display panel while maintaining the same number of sub-pixels, and reducing costs by potentially using half the number of driving chips.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the pixel pitch is reduced to improve resolution, then the resolution is improved, but the cost increases due to the need for more pixels
Solution Approach 1:
The patent creates virtual pixel copies through time-multiplexed display of real pixels. By rapidly switching the display state of real pixels between different time periods, the system generates multiple virtual pixel images from a single real pixel, effectively increasing resolution without adding physical pixels. This is achieved through frame buffer manipulation and timing control to exploit human visual persistence.
Solution Approach 2:
The patent employs periodic time-multiplexed switching of pixel states to create virtual pixels. Real pixels are alternately displayed in different positions or states across multiple time periods, with the display controller periodically updating frame buffers to generate the illusion of additional pixels. This periodic action exploits human visual persistence to perceive multiple virtual pixels from single physical pixels.
2Measurement precision
If the pixel pitch is reduced below 0.9 mm, then the resolution should be improved, but it is difficult to achieve with conventional technology
Solution Approach 1:
The patent transitions from spatial arrangement to temporal arrangement by adding a time dimension to pixel display. Instead of physically packing more pixels in space, the system uses time-multiplexed switching to create virtual pixels, effectively moving the problem from the spatial domain to the temporal domain. This allows achieving sub-0.9mm pixel pitch equivalent resolution without the physical complexity.
Solution Approach 2:
The patent changes the display parameter from static spatial pixel arrangement to dynamic temporal pixel switching. By modifying the time-based display parameters (frame timing, pixel switching sequences, and state durations), the system creates virtual pixels that appear at different positions or with different characteristics, achieving high resolution without increasing physical pixel density or structural complexity.
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
The proposed pixel structure enhances display panel resolution and reduces costs by effectively utilizing virtual pixels, ensuring uniform light emission and reducing user fatigue.
Implementation Method 1
uses the 'virtual pixel' technology (i.e., a technology that uses the persistence of human eyes to time-multiplex real pixels to reproduce more virtual pixels)
Data Source
AI summary
A pixel structure, a display panel, and a display device. The pixel structure comprises a plurality of pixel groups arranged in an array and each comprises a first sub-pixel, a second sub-pixel, and a third sub-pixel; a line connecting the centers of the first sub-pixel, the second sub-pixel and the third sub-pixel forms a first virtual isosceles right triangle; in two adjacent pixel groups arranged in a row direction of the array, a line connecting the centers of the second sub-pixel and the third sub-pixel of one pixel group and the first sub-pixel of the other pixel group forms a second virtual isosceles right triangle; in two adjacent pixel groups in a column direction of the array, a line connecting the centers of the first sub-pixel and the second sub-pixel of one pixel group and the third sub-pixel of the other pixel group forms a third virtual isosceles right triangle.