Display Partition Structure With Reflective Sidewalls for Higher Luminance
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing display devices face challenges in improving luminance while reducing the number of mask processes during fabrication.
Innovation Solution
The display device incorporates a partition structure with specific configurations, including reflective layers on side surfaces of the partition, which allows for increased ink application volume, alignment of more light-emitting elements, and reduced cell gap, enhancing luminance and enabling a thinner design with fewer mask processes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If a conventional partition structure is used, then the fabrication process requires multiple mask processes, but this increases the number of manufacturing steps and reduces productivity
Solution Approach 1:
The patent combines multiple partition structures (first partition, second partition, third partition) into a single integrated configuration that can be formed by one mask process. The first partition extends from the first electrode toward the second electrode, the second partition extends from the second electrode toward the first electrode, and the third partition connects them, all created simultaneously through a single masking step, thereby reducing the number of mask processes while maintaining effective light emission control.
2Length of stationary object
If the cell gap is reduced to achieve a thinner design, then the display device becomes more compact, but this may limit the space for light emission and affect luminance
Solution Approach 1:
The patent introduces reflective layers disposed on side surfaces of the partition structure, utilizing the vertical dimension and side surface area to reflect light upward. This dimensional approach allows light to be redirected toward the emission area without increasing the cell gap thickness, thereby maintaining a compact design while improving luminance through the additional light path created by the reflective surfaces.
3Illumination intensity
If the ink application volume is increased to align more light-emitting elements, then luminance is improved, but this requires a larger emission area that may increase device size
Solution Approach 1:
The patent utilizes the vertical dimension by disposing reflective layers on the side surfaces of the partition. This allows light from light-emitting elements to be reflected upward into the emission area, effectively increasing the usable light output without requiring a larger horizontal emission area. The reflective layers convert lateral light paths into vertical emission paths, improving luminance within the same footprint.
4Illumination intensity
If reflective layers are added to improve luminance, then light emission is enhanced, but this increases the device complexity and number of layers
Solution Approach 1:
The partition structure serves multiple functions: it physically separates the first and second electrodes, provides a substrate for the reflective layers, and the reflective layers themselves contribute to light management. By integrating the reflective layers onto the partition structure, the patent achieves multi-functionality where the partition既是 a structural element又是 an optical element, improving luminance without proportionally increasing device complexity.
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 improves luminance by reflecting light in an upward direction and reduces the number of mask processes, resulting in a more efficient and compact display device.
Implementation Method 1
reflective layers disposed at least on side surfaces of the second parts... improves luminance by reflecting light in an upward direction
Data Source
AI summary
A display device includes first and second electrodes disposed on a substrate, the first and second electrodes extending in a direction and being parallel to each other, a first insulating layer disposed on the first and second electrodes, light-emitting elements disposed on the first insulating layer, the light-emitting elements having first end portions disposed on the first electrode and second end portions disposed on the second electrode, and a partition disposed on the first insulating layer and being parallel to the first electrode, the partition including a first part that overlaps the light-emitting elements, and second parts that do not overlap the light-emitting elements, wherein a vertical distance from a top surface of the first electrode to a top surface of the first part is equal to a vertical distance from the top surface of the first electrode to top surfaces of the second parts.