Display Device Alignment-Inducing Layer for Light Emission
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Solution Overview
Problem
Current display devices face challenges in efficiently arranging and concentrating light-emitting elements, leading to light loss and uneven emission due to random distribution and misalignment during the manufacturing process.
Innovation Solution
A display device design incorporating an alignment-inducing layer with hydrophobic and hydrophilic materials is used to guide light-emitting elements into specific areas, ensuring dense arrangement and minimizing losses by creating alignment and non-alignment areas within the pixel region.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of energy
If light-emitting elements are arranged randomly during manufacturing, then the manufacturing process is simple, but light loss increases and emission uniformity deteriorates
Solution Approach 1:
An alignment-inducing layer is introduced as an intermediary component between the substrate and the light-emitting elements. This layer contains alignment-inducing patterns that actively guide and concentrate the light-emitting elements during the dispensing process, ensuring they are precisely positioned in target areas while reducing light loss without requiring high-precision manual placement
2Illumination intensity
If light-emitting elements are densely concentrated in specific areas, then emission concentration improves, but the device structure becomes more complex
Solution Approach 1:
The alignment-inducing layer implements local quality by creating specific patterns (such as hydrophobic/hydrophilic regions or surface energy variations) in targeted areas. These localized patterns guide light-emitting elements to concentrate in specific regions while leaving other areas unaffected, achieving high emission concentration without requiring complex overall device restructuring
3Manufacturing precision
If alignment-inducing layer is used to guide light-emitting elements, then arrangement precision improves, but manufacturing process complexity increases
Solution Approach 1:
The alignment-inducing layer enables self-service by allowing the light-emitting elements to automatically align and concentrate in the desired positions through the alignment-inducing patterns during the dispensing process. This eliminates the need for complex external alignment mechanisms or high-precision positioning equipment, as the structure itself guides the element placement
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
The alignment-inducing layer effectively concentrates light-emitting elements, reducing waste and improving emission concentration by precisely locating them within the display device, enhancing overall light output and efficiency.
Implementation Method 1
The first part of the alignment-inducing layer may include a hydrophobic material
Implementation Method 2
The alignment-inducing layer may further include a second part including a hydrophilic material
Data Source
AI summary
A display device includes: a pixel region including a plurality of alignment areas and a non-alignment area adjacent to the plurality of alignment areas; a plurality of electrodes extending in a direction and be spaced apart from each other in the pixel region; a plurality of light-emitting elements disposed between the plurality of electrodes in the plurality of alignment areas and including at least one end of the plurality of light-emitting elements disposed on one of the plurality of electrodes; and an alignment-inducing layer including a first part disposed in the non-alignment area.