Display Line Load Compensation for Uniform Luminance
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Solution Overview
Problem
Display devices exhibit non-uniform luminance due to differences in load values among lines of varying lengths, leading to inconsistencies in the final image.
Innovation Solution
A display device design incorporating dummy parts to compensate for load value differences between lines, with specific dummy parts connected to lines in sub-regions to balance load values, and including parasitic capacitors and dummy pixels to enhance uniformity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If lines are extended to cover larger display regions, then the coverage area is improved, but load value differences cause luminance non-uniformity
Solution Approach 1:
The patent applies local quality by configuring different dummy part arrangements in different display regions. Specifically, first dummy parts are arranged in a first pattern in the first display region, while second dummy parts are arranged in a second pattern in the second display region. This regional differentiation compensates for the varying line load values in different areas, maintaining luminance uniformity across the entire display while preserving the extended coverage area.
2Manufacturing precision
If dummy parts are added to compensate for load value differences, then luminance uniformity is improved, but device complexity increases
Solution Approach 1:
The patent employs parameter changes by systematically varying the dummy part configuration parameters across different display regions. The first dummy parts and second dummy parts have different arrangement patterns that correspond to the specific line load characteristics of each region. This parameter-based approach achieves luminance uniformity through controlled variations rather than adding complex compensatory mechanisms, thereby improving luminance consistency while managing 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
Achieves uniform luminance across different regions by compensating for load value disparities, ensuring consistent image quality.
Implementation Method 1
a dummy part configured to compensate for a difference between a load value of the first lines and load values of the second and third lines
Data Source
AI summary
A display device is disclosed, and the display device includes a substrate including first to third display regions, the second and the third display regions being spaced from each other, each of the second and third display regions having an area smaller than that of the first display region and being continuous to the first display region, first to third pixels in the first to third display regions, first to third lines connected to the first to third pixels, and a dummy part configured to compensate for a difference between a load value of the first lines and load values of the second and third lines, wherein the second display region includes a first sub-region adjacent to the first display region and a second sub-region spaced from the first display region, and the third display region includes a third sub-region adjacent to the first display region and a fourth sub-region spaced from the first display region.