Display Device Dummy Unit Load Compensation
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Solution Overview
Problem
Display devices with varying pixel areas face brightness inconsistencies due to differences in wire load values, leading to uneven image quality.
Innovation Solution
A display device with a substrate featuring multiple pixel areas of different surface areas, connected by lines with load value compensation using a dummy unit to balance the load values of the wires, ensuring consistent brightness across the display.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If pixels of different surface areas are used in the display device, then the display can accommodate varying pixel area requirements, but brightness inconsistency occurs due to different wire load values
Solution Approach 1:
The patent applies local quality by creating different pixel area configurations (first pixel area, second pixel area, third pixel area) with varying surface areas to meet different display requirements. Each pixel area is optimized locally while the dummy unit provides global load balancing to maintain brightness consistency across all regions.
Solution Approach 2:
The patent changes the load value parameter by introducing a dummy unit that compensates for the differences in wire load values caused by varying pixel areas. This parameter adjustment ensures that despite different pixel surface areas, the brightness remains consistent across all pixel regions.
2Adaptability or versatility
If wires of different lengths connect pixels of varying areas, then pixel area flexibility is achieved, but load value differences cause brightness variation
Solution Approach 1:
The dummy unit acts as an intermediary element that compensates for the load value differences caused by wires of different lengths. By introducing this compensating structure, the patent balances the electrical load across pixels with varying wire lengths, ensuring uniform brightness without requiring precise wire length matching.
3Illumination intensity
If a dummy unit is added to compensate for load value differences, then brightness consistency is improved, but device structure becomes more complex
Solution Approach 1:
The patent segments the display device into distinct functional regions: first pixel area, second pixel area, third pixel area, and dummy unit. This segmentation allows the dummy unit to be strategically placed only where needed to compensate for load differences, rather than requiring complex modifications throughout the entire device structure.
Data Source
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AI summary
A display device includes a substrate including a first pixel area, a second pixel area, and a third pixel area, each of the second and third pixel areas having a smaller surface area than the first pixel area and being connected to the first pixel area, first to third pixels provided in the first to third pixel areas, respectively, first to third lines connected to the first to third pixels, respectively, a line connecting part connecting the second and third lines, and a dummy unit overlapping the line connecting part to compensate for a difference of a load value of the first line and a load value of the second line.