Display Panel Virtual Pixel Layout for Sub-0.8 mm Pitch
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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 manufacturing costs.
Innovation Solution
Employing a 'virtual pixel' technology that time-division multiplexes physical pixels using the persistence of vision and flicker fusion effect of the human eye, with a display panel design that includes a circuit board and pixel groups arranged in an array, each comprising a specific ratio of chips at the vertices of virtual geometric shapes, allowing for the formation of virtual pixels at the circumcenters of triangles or squares.
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 manufacturing cost increases and the pixel pitch cannot be reduced to 0.9 mm or less
Solution Approach 1:
The patent creates virtual pixel copies through time-division multiplexing of physical pixels. By rapidly switching between different physical pixel configurations and utilizing persistence of vision, the system generates multiple virtual pixel images from fewer physical pixels, achieving higher resolution without proportionally increasing physical pixel count or manufacturing cost
Solution Approach 2:
The patent employs periodic time-division multiplexing where physical pixels are rapidly switched between different states or configurations in periodic cycles. This periodic switching creates the illusion of multiple simultaneous pixel states, enabling virtual pixel generation that improves resolution while maintaining cost-effectiveness
2Measurement precision
If more physical pixels are used to improve resolution, then the resolution is improved, but the manufacturing cost increases
Solution Approach 1:
The patent generates virtual pixel copies through time-division multiplexing, where each physical pixel serves multiple virtual pixel roles by rapidly switching states. This copying approach allows the system to achieve the effect of having more pixels without actually manufacturing more physical pixels, thereby reducing material costs and manufacturing complexity
3Measurement precision
If the pixel pitch is reduced below conventional limits, then the resolution is improved, but the technical difficulty increases beyond current capabilities
Solution Approach 1:
The patent replaces the mechanical approach of physically packing more pixels closer together with an optical-perceptual approach using time-division multiplexing and persistence of vision. Instead of mechanically reducing pixel pitch to increase resolution, the system uses temporal switching to create virtual pixels, avoiding the technical challenges of ultra-fine pitch manufacturing
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
Enhances display resolution while reducing manufacturing costs by simulating more virtual pixels than physical ones, achieving a pixel pitch of 0.8 mm or less and improving display uniformity and reducing user fatigue.
Implementation Method 1
the persistence of vision and flicker fusion effect of the human eye
Implementation Method 2
the persistence of vision and flicker fusion effect of the human eye
Data Source
AI summary
The present application relates to a display panel and a display device. The display panel comprises a circuit board, and a plurality of pixel groups arranged in an array to form an array structure. The plurality of pixel groups comprise first and second pixel groups adjacent in a same column, the first and second pixel groups are configured to display a first virtual pixel by multiplexing a first chip and a second chip in the first pixel group and a third chip in the second pixel group, and the first virtual pixel is approximately at a circumcenter of a triangle formed by these three chips as vertices.