Display Panel Segmentation for Brightness Uniformity and Wiring Area Reduction
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Solution Overview
Problem
Display devices with white pixels suffer from reduced display quality and shorter lifespan due to increased wiring complexity, leading to variations in brightness and enlarged regions around the image display surface.
Innovation Solution
A display device with a two-dimensional matrix of pixels, featuring high-density and low-density regions, where high-density regions have more sub-pixels and a lighting drive circuit to enhance brightness uniformity and reduce wiring impact, while low-density regions have fewer sub-pixels and a drive control circuit to manage the display panel effectively.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If white pixels are added to improve display quality, then display quality is improved, but wiring complexity increases leading to brightness variation and reduced lifespan
Solution Approach 1:
The display panel is divided into high-density regions (with white, red, green, and blue sub-pixels) and low-density regions (with only red, green, and blue sub-pixels). This segmentation allows the patent to improve display quality in specific areas while avoiding the wiring complexity issues that would arise from uniformly adding white pixels across the entire display.
Solution Approach 2:
The patent applies different pixel configurations to different regions of the display. High-density regions use four sub-pixels per pixel for superior display quality, while low-density regions use three sub-pixels to minimize wiring complexity. This local differentiation resolves the contradiction by optimizing display quality where needed while avoiding areas where wiring complexity would cause problems.
2Manufacturing precision
If white pixels are added to improve display quality, then display quality is improved, but aperture ratio decreases due to additional wiring
Solution Approach 1:
By segmenting the display into high-density and low-density regions, the patent limits the impact of reduced aperture ratio to only the high-density regions. The low-density regions maintain higher aperture ratios, and their combined area compensates for the aperture loss in high-density regions, thereby maintaining overall display quality while improving specific areas.
Solution Approach 2:
The patent applies the four-sub-pixel configuration locally to high-density regions where display quality is prioritized, accepting the aperture ratio penalty in those specific areas. The majority of the display area uses the three-sub-pixel configuration with higher aperture ratios, thus balancing local quality improvement with overall area efficiency.
3Manufacturing precision
If white pixels are added to improve display quality, then display quality is improved, but the region around the image display surface widens
Solution Approach 1:
The patent segments the display area to concentrate the wider circuit region in low-density areas that are peripheral to the main image display surface. This allows the high-density regions with superior display quality to occupy the central, more valuable display area, while the low-density regions with larger circuit footprints are relegated to less critical areas.
4Illumination intensity
If high-density regions with more sub-pixels are created, then brightness uniformity is improved, but device complexity increases
Solution Approach 1:
The patent segments the display into high-density and low-density regions with clearly defined boundaries and characteristics. This segmentation allows for optimized brightness uniformity in high-density regions through the presence of white sub-pixels, while the overall device complexity is managed by limiting the high-density region to specific areas rather than the entire display.
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 configuration maintains brightness consistency across regions, prolongs device lifespan, and reduces the area occupied by wiring, thereby enhancing display quality and reducing the risk of display quality deterioration.
Implementation Method 1
each of the sub-pixels includes a self-luminous layer... a lighting drive circuit configured to light up the self-luminous layer
Data Source
AI summary
A display device includes a plurality of pixels arranged in a two dimensional matrix, wherein each of the pixels includes a plurality of sub-pixels, each of the sub-pixels includes a self-luminous layer. The display device includes a low-density region including low-density pixels each including a first number of the sub-pixels, a high-density region including high-density pixels each including a second number of the sub-pixels, wherein the second number is greater than the second number, and a lighting drive circuit configured to light up the self-luminous layer.