Foldable Display Light-Blocking Layout for Afterimage Suppression
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Solution Overview
Problem
Display devices experience afterimages due to differences in driving time between display areas, particularly in flexible and foldable light emitting display devices.
Innovation Solution
The display device incorporates a light blocking layer with varying widths and spacings between emission areas in different display areas to minimize afterimage occurrence, with specific widths and spacings optimized for each area to synchronize driving times.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a light emitting display device uses different display areas with different driving times, then the display device can be more flexible and adaptable, but afterimages occur due to the driving time differences
Solution Approach 1:
The patent applies local quality by configuring different light blocking layer widths in different display areas. Specifically, the first light blocking layer in the first display area has a different width than the second light blocking layer in the second display area, allowing each area to be optimized for its specific driving conditions and minimizing afterimage effects locally
Solution Approach 2:
The patent uses preliminary action by having the light blocking layers prevent light emission in advance before the afterimage effect occurs. The light blocking layers are positioned to block light from adjacent emission areas during the driving time difference, proactively preventing the harmful afterimage effect
2Object-affected harmful factors
If the light blocking layer width is increased to prevent afterimages, then afterimage occurrence is reduced, but the emission area is reduced
Solution Approach 1:
The patent optimizes the balance between light blocking layer width and emission area by applying local quality - each display area has light blocking layers configured with widths specifically suited to that area's requirements. The first light blocking layer has a different width than the second light blocking layer, allowing each to provide sufficient afterimage prevention while minimizing the impact on emission area
Solution Approach 2:
The patent applies partial action by using light blocking layers with widths that are sufficient to prevent afterimages but not excessively large. The light blocking layers are configured to provide just enough blocking to prevent the harmful effect while preserving maximum emission area
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 delays, minimizes, or prevents afterimages by synchronizing driving times across display areas, enhancing display quality and longevity.
Implementation Method 1
a light blocking layer surrounding the plurality of emission areas in plan view
Data Source
AI summary
A display device comprises a first display area, a second display area adjacent to a side of the first display area, a third display area adjacent to a side of the second display area, a plurality of emission areas disposed in the first, second, and third display areas to emit light, and a light blocking layer surrounding the plurality of emission areas. A width of the light blocking layer between adjacent emission areas in a first direction in each of the first and third display areas is greater than a width of the light blocking layer between adjacent emission areas in the first direction in the second display area.