Non-Quadrangular Display Edge Light Intensity Control
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Solution Overview
Problem
Display devices with non-quadrangular edges suffer from reduced light intensity at the edges, causing them to appear as a step shape due to the arrangement of pixels, which affects the overall display quality, especially in wearable and flexible display applications.
Innovation Solution
A display device and driving method that apply spatial-temporal division processing to image signals, using different weight values for pixels based on their location, with edge pixels undergoing bypass processing to maintain light intensity and reduce aperture ratio differences, thereby enhancing the display's edge appearance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If spatial-temporal division processing is applied to all pixels to improve light intensity distribution, then center pixels benefit from enhanced brightness, but edge pixels experience excessive processing that may distort the intended display output
Solution Approach 1:
The patent applies different processing strategies to different pixel locations: spatial-temporal division processing is applied to center pixels while bypass processing is applied to edge pixels. This local differentiation ensures that each region receives the appropriate processing level, preventing over-processing of edge pixels while maintaining the benefits for center pixels.
Solution Approach 2:
The display panel is segmented into different regions (center region and edge region) based on pixel location. The signal controller divides the display area and applies different processing methods to each segment, allowing optimized handling for each region's specific characteristics.
2Illumination intensity
If spatial-temporal division processing is applied to edge pixels to increase light intensity, then brightness is improved, but the processing complexity and computation time increase
Solution Approach 1:
The patent extracts edge pixels from the general pixel processing flow and applies a simplified bypass processing method specifically to them. This separation removes the complex spatial-temporal division processing from edge pixels, reducing overall system complexity while maintaining adequate brightness through selective processing.
3Ease of manufacture
If uniform processing is applied to all pixels to simplify the driving method, then implementation is easier, but the step shape effect remains at non-quadrangular edges
Solution Approach 1:
The patent applies local quality differentiation by using bypass processing specifically for edge pixels located at non-quadrangular edges. This targeted approach maintains the simple uniform processing for most pixels while locally adjusting edge pixel handling to eliminate the step shape effect, achieving both simplicity and visual quality.
4Illumination intensity
If weight values are adjusted for different pixels to improve light intensity distribution, then display quality is enhanced, but the calculation complexity increases
Solution Approach 1:
The patent applies weight value adjustment selectively and partially - using different weight values only for center pixels that undergo spatial-temporal division processing, while edge pixels use bypass processing with simpler or default weight values. This partial application reduces overall calculation complexity while still achieving improved light intensity distribution where most needed.
Data Source
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AI summary
A display device according to an exemplary embodiment includes: a display panel including a display area which includes at least one non-quadrangular edge and a plurality of pixels; and a signal controller applying spatial-temporal division processing to an image signal corresponding to a first pixel which is not included in the non-quadrangular edge and bypassing the spatial-temporal division processing to an image signal corresponding to a second pixel which is included in the non-quadrangular edge.