OLED Panel Island Partitioning for Luminance Uniformity
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current lighting devices, such as incandescent and fluorescent lamps, face issues with energy efficiency and color rendering, while LED-based devices have limitations in heat dissipation and high production costs, and existing OLED panels struggle with luminance uniformity and light emission efficiency.
Innovation Solution
An OLED panel configuration including a substrate, auxiliary wiring patterns, electrodes, a passivation layer, an OLED light emitting structure, and an encapsulating layer, where the second auxiliary wiring pattern forms island-shaped areas to prevent decreases in luminance uniformity and light emission efficiency, and the first auxiliary wiring pattern helps in stable electrode disposition, reducing the need for high-priced sapphire and improving heat management.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If a large-area OLED panel is manufactured without partitioning, then the production area increases, but the luminance uniformity deteriorates
Solution Approach 1:
The patent divides the large-area OLED panel into multiple island-shaped light emitting regions separated by non-light-emitting regions containing auxiliary wiring patterns. This segmentation prevents luminance uniformity deterioration while maintaining large overall panel area, as the partitioned structure allows independent optimization of each light emitting region.
2Loss of energy
If the OLED light emitting structure is disposed continuously across the entire area, then the light emission efficiency increases, but the luminance uniformity decreases
Solution Approach 1:
The patent creates local variations in the OLED structure by forming island-shaped light emitting regions with specific patterns, while non-light-emitting regions contain auxiliary wiring. This local quality differentiation allows optimal light emission efficiency in the light emitting regions while maintaining overall luminance uniformity through the partitioned configuration.
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 solution enables the manufacture of large-area OLED panels with improved luminance uniformity and light emission efficiency, reduced production costs, and enhanced heat dissipation, without the need for high-priced sapphire, while preventing short circuits and moisture ingress.
Implementation Method 1
an OLED (organic light emitting diode) panel for a lighting device
Data Source
AI summary
An OLED panel for a lighting device is provided. The OLED panel for a lighting device may include a substrate; a first auxiliary wiring pattern disposed on the substrate; a first electrode disposed on a substrate on which the first auxiliary wiring pattern is disposed; a passivation layer disposed on the first electrode within an area where the first auxiliary wiring pattern is disposed; a second auxiliary wiring pattern disposed on the passivation layer to form a plurality of areas partitioned from each other; an OLED light emitting structure disposed in the plurality of areas partitioned by the second auxiliary wiring pattern; a second electrode disposed on the OLED light emitting structure and the second auxiliary wiring pattern; and, an encapsulating layer disposed on the second electrode. The OLED panel for a lighting device may form the respective OLED light emitting structures in an island shape, thereby improving luminance uniformity.