Inorganic Display Pixel Structure for Moisture-Resistant Luminance
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Organic light-emitting display devices face issues with short lifespan, limited luminance, lower pure-color luminance, restricted aperture ratio, and the need for an expensive polarizing plate due to their vulnerability to moisture and the use of white color.
Innovation Solution
A display device utilizing an inorganic light-emitting element with a substrate, light-emitting element, insulating layers, driving elements, and a light conversion layer, which includes a seed semiconductor layer, conductive semiconductor rods, and a light-blocking layer to enhance performance and reduce costs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Duration of action of moving object
If an organic light-emitting element is used, then quick response time and high luminous efficiency are achieved, but lifespan is shortened due to vulnerability to moisture
Solution Approach 1:
The patent changes the material parameter of the light-emitting element from organic to inorganic, which fundamentally alters the chemical stability and moisture resistance properties. This material substitution resolves the contradiction by providing both long lifespan and high reliability against moisture while maintaining the required luminous performance.
2Area of stationary object
If an organic light-emitting element is used, then high luminance is achieved, but aperture ratio is limited
Solution Approach 1:
The patent changes the material composition parameter from organic to inorganic light-emitting elements, which enables higher luminance output per unit area. This allows the aperture ratio to be increased while maintaining or improving overall luminance performance, resolving the trade-off between these two parameters.
3Ease of manufacture
If a polarizing plate is used in the display device, then viewing angle and contrast are improved, but manufacturing cost increases
Solution Approach 1:
The patent removes the polarizing plate from the display device structure. By using inorganic light-emitting elements with inherent emission characteristics, the device achieves acceptable viewing angle and contrast performance without requiring the additional polarizing plate component, thereby reducing manufacturing cost while maintaining essential display quality.
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 inorganic light-emitting display device improves lifespan, luminance, and aperture ratio, eliminates the need for a polarizing plate, and achieves efficient color conversion, providing a cost-effective and environmentally friendly solution.
Implementation Method 1
a light-emitting element disposed on the substrate... an inorganic light-emitting display device
Implementation Method 2
a light conversion layer disposed on the second insulating layer, wherein the light conversion layer is disposed to overlap the light-emitting element
Data Source
AI summary
A display device is disclosed that includes a substrate, a light-emitting element disposed on the substrate, a first insulating layer disposed on the light-emitting element, and a driving element disposed on the first insulating layer, wherein the driving element passes through the first insulating layer and is electrically connected to the light-emitting element.