Shared-Subpixel Display Layout for Adjustable Viewing Angles
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Solution Overview
Problem
Existing display devices lack the ability to dynamically adjust viewing angles and effectively manage the lifespan of light emitting elements, leading to limitations in image display quality and longevity.
Innovation Solution
A display device design featuring first and second pixels sharing a third subpixel, with different light blocking layers and emission modes, allowing for varying driving periods and resolutions to achieve adjustable viewing angles and improved lifespan.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a light emitting display device uses conventional pixel structures, then it can display images, but it cannot dynamically adjust viewing angles and has limited lifespan due to subpixel deterioration
Solution Approach 1:
The display device divides the pixel structure into multiple segments: first pixels with first light blocking layers, second pixels with second light blocking layers, and shared third pixels. This segmentation allows different viewing angle characteristics to be achieved by selectively driving different pixel types, while the shared pixels distribute the operational load to extend overall device lifespan.
Solution Approach 2:
The patent implements dynamic viewing angle adjustment by selectively driving first pixels, second pixels, or both in different time periods based on the desired viewing angle mode. This dynamic switching between different pixel driving configurations enables the viewing angle to be adjusted without physical movement, resolving the contradiction between adaptability and reliability.
2Adaptability or versatility
If display devices use fixed pixel structures, then manufacturing is simpler, but viewing angle and resolution flexibility is limited
Solution Approach 1:
The patent creates a universal pixel structure where first pixels, second pixels, and third shared pixels can all function as display elements. By designing the light blocking layers and emission areas with specific geometric relationships, the same basic pixel structure can serve multiple functions: displaying images at different resolutions and providing different viewing angle characteristics, thus achieving flexibility without proportionally increasing complexity.
Solution Approach 2:
Different regions of the display device have different pixel configurations: first pixels with first light blocking layers in first unit areas, second pixels with second light blocking layers in second unit areas, and shared third pixels. This local differentiation allows the device to optimize for specific viewing angles or resolutions in different regions, providing overall flexibility while maintaining manageable complexity through standardized local structures.
3Reliability
If all pixels are driven continuously, then image display quality is maintained, but subpixel deterioration accelerates and lifespan decreases
Solution Approach 1:
The patent implements periodic action by alternating between driving first pixels and second pixels in different time periods. During first time periods, first pixels are driven while second pixels are not, and during second time periods, second pixels are driven while first pixels are not. This periodic switching allows the shared third pixels to have reduced operational burden, slowing deterioration and extending lifespan while maintaining continuous image display quality through the complementary driving of different pixel types.
Data Source
AI summary
A display device includes a first pixel and a second pixel disposed in a first unit area of a display area including unit areas, each of the first pixel and the second pixel including a first subpixel and a second subpixel, and the first pixel and the second pixel sharing a third subpixel, a first light blocking layer disposed on a light emitting element layer which includes light emitting elements of subpixels disposed in each of the unit areas and surrounding emission areas in which the light emitting elements are disposed, and a second light blocking layer disposed on the first light blocking layer and surrounding emission areas of the first subpixel and the second subpixel of the second pixel in the first unit area, wherein the first pixel and the second pixel are driven in different periods.