Stacked Light-Emitting Display Layout for Higher Pixel Density
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Solution Overview
Problem
Conventional display devices struggle to achieve high-resolution images in small form factors due to spatial constraints imposed by pixel defining layers, limiting the density of pixel arrangements.
Innovation Solution
The display device employs a novel arrangement of light emitting elements on multiple substrates with spacers, allowing for dense packing without the need for a pixel defining layer between all elements, enabling top emission type elements to be positioned in different elevational planes and adjacent to each other, thereby increasing pixel density.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If a pixel defining layer is used to partition pixels, then pixel separation and definition are improved, but pixel density and resolution are reduced due to spacing requirements
Solution Approach 1:
The invention extracts and removes the pixel defining layer from the display structure, allowing light emitting elements to be disposed adjacent to each other without requiring separation layers, thereby increasing pixel density while maintaining element definition through alternative structural means
Solution Approach 2:
The invention transitions from a two-dimensional planar arrangement with spacing to a three-dimensional stacked configuration where light emitting elements are disposed in different elevational planes, enabling adjacent positioning without spatial conflict and achieving higher pixel density
2Quantity of substance
If more pixels are arranged in the same display area, then image resolution is improved, but spatial constraints and manufacturing complexity increase
Solution Approach 1:
The invention utilizes the vertical dimension by stacking light emitting elements in different elevational planes on first and second substrates, converting a two-dimensional packing problem into a three-dimensional arrangement that achieves higher pixel density without increasing planar complexity
Solution Approach 2:
The invention divides the display into multiple independent substrates (first substrate with some light emitting elements, second substrate with other light emitting elements), allowing each substrate to be manufactured and assembled separately, thereby reducing overall manufacturing complexity while achieving high pixel density
Data Source
AI summary
A display device includes a first substrate including a first substrate, a first connection electrode disposed on the first substrate, and connected to a first transistor, a first spacer disposed on the first connection electrode, and including a conductive material, a first light emitting element disposed on the first spacer, and a second light emitting element disposed on the first substrate, and connected to a second transistor.