Subpixel Emission Layout for Stray-Light-Resistant Displays
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Solution Overview
Problem
Display devices with light-emitting elements for each subpixel often experience stray light phenomena, which degrade display quality by causing light to propagate between subpixels, reducing resolution and efficiency.
Innovation Solution
The display device incorporates a configuration where the emission regions of adjacent light-emitting elements are positioned in a 3-fold rotationally symmetric arrangement, with intersecting sides in plan view, to minimize stray light propagation and enhance light extraction efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If light-emitting elements are arranged adjacently for each subpixel, then display resolution is improved, but stray light propagation between subpixels occurs
Solution Approach 1:
The emission regions are arranged in a 3-fold rotationally symmetric pattern, creating an asymmetric configuration relative to conventional linear or grid arrangements. This asymmetric angular distribution (0°, 120°, 240°) prevents stray light from systematically propagating to adjacent subpixels, thereby maintaining high display resolution while reducing stray light interference.
2Area of stationary object
If emission regions are positioned closer together, then device area is reduced, but stray light extraction increases
Solution Approach 1:
The invention changes the angular parameter of emission region arrangement to 3-fold rotational symmetry (0°, 120°, 240°), which fundamentally alters light propagation characteristics. This parameter change enables emission regions to be positioned closer together without increasing stray light extraction, as the symmetric angular distribution directs light away from adjacent subpixels while maintaining compact device area.
Data Source
AI summary
A display device includes the following: a first light-emitting element having a first emission region; a second light-emitting element adjacent to the first light-emitting element, and having a second emission region; and a third light-emitting element adjacent to both of the first light-emitting element and the second light-emitting element, and having a third emission region. In a plan view, any part of the first emission region, any part of the second emission region, and any part of the third emission region are in positions that are 3-fold rotationally symmetric with each other. Between the first emission region and the second emission region, between the second emission region and the third emission region, and between the third emission region and the first emission region, two sides facing each other in the plan view extend in a direction where the two sides intersect.