OLED Lighting Apparatus Segmentation for Uniformity and Durability
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Solution Overview
Problem
Conventional lighting technologies, such as incandescent lamps and fluorescent lamps, face issues with energy efficiency and color rendering index, while LED lamps have efficiency problems when emitting white light, and organic light-emitting diode (OLED) lamps are sensitive to foreign materials and difficult to manufacture in desired forms.
Innovation Solution
A lighting apparatus with an extendable and contractible structure, featuring a substrate with separate light emitting areas, non-light emitting areas, and auxiliary electrodes, which allows for flexible design and improved light emission uniformity through a mesh-shaped auxiliary electrode configuration and insulating film, enabling stretchability and durability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If organic light emitting devices are used to achieve high color rendering index and energy efficiency, then lighting quality is improved, but the apparatus becomes highly sensitive to foreign materials and manufacturing becomes difficult
Solution Approach 1:
The patent divides the light emitting area into multiple separate first light emitting areas and multiple separate second light emitting areas arranged in different directions. This segmentation reduces the impact of foreign materials on the entire device, as defects in one segment do not affect other segments, thereby improving reliability while maintaining energy efficiency.
Solution Approach 2:
The patent introduces non-light emitting areas with insulating films between the light emitting areas, creating local variations in the structure. This local quality differentiation allows for better control of electrical properties and reduced sensitivity to foreign materials in critical areas, while maintaining high light emission efficiency in the light emitting areas.
2Illumination intensity
If LED combines red, green and blue light emitting diodes to emit white light, then color rendering is improved, but light emission efficiency decreases
Solution Approach 1:
The patent segments the light emitting areas into first light emitting areas and second light emitting areas arranged in different directions, allowing for more efficient light extraction and reduced internal reflection losses, thereby improving overall light emission efficiency while maintaining good color rendering.
Solution Approach 2:
The patent arranges light emitting areas in both first and second directions that intersect, creating a two-dimensional arrangement that improves light emission in multiple directions and enhances overall lighting efficiency while maintaining color rendering quality.
3Adaptability or versatility
If lighting apparatus is designed for various uses and forms, then adaptability is improved, but manufacturing flexibility and ease of achieving desired forms decreases
Solution Approach 1:
The patent divides the lighting apparatus into modular light emitting areas that can be independently arranged and configured. This segmentation enables flexible manufacturing for different forms and uses while maintaining consistent manufacturing processes for each module, improving both adaptability and manufacturing ease.
Solution Approach 2:
The patent creates a universal module structure with light emitting areas and non-light emitting areas that can be adapted for various uses and forms. This multi-functional design allows the same basic structure to serve different lighting applications, improving adaptability without complicating manufacturing.
4Area of stationary object
If large area organic light emitting devices are used, then lighting coverage is improved, but light emission may not be achieved uniformly due to foreign materials
Solution Approach 1:
The patent divides the large light emitting area into multiple smaller first light emitting areas and second light emitting areas. This segmentation ensures that even in large area devices, each segment can maintain uniform light emission without being affected by foreign materials in other segments, preserving manufacturing precision across the entire lighting coverage area.
Solution Approach 2:
The patent introduces insulating films and non-light emitting areas at specific locations between light emitting areas, creating local quality control that prevents defect propagation and maintains uniform light emission across large areas, thereby improving manufacturing precision.
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 provides a lighting apparatus with improved energy efficiency, enhanced color rendering, reduced sensitivity to foreign materials, and a flexible, long-lasting design that can be easily expanded or bent, addressing the limitations of existing technologies.
Implementation Method 1
a lighting apparatus using organic light emitting devices (organic light emitting diodes (OLED)) has been developed
Data Source
AI summary
A lighting apparatus comprising a lighting part that includes a light emitting area having a plurality of first light emitting areas that are separated apart from each other and a plurality of second light emitting areas separated apart from each other and a non-light emitting area including a first non-light emitting area surrounding the plurality of first light emitting areas and the plurality of second light emitting areas and a plurality of second non-light emitting areas extending from the first non-light emitting area, the lighting apparatus comprises a substrate; a plurality of first electrodes disposed on the substrate in the light emitting area; an organic layer disposed on the plurality of first electrodes; a second electrode disposed on the organic layer; and an encapsulation part disposed on the second electrode; wherein the plurality of first light emitting areas are arranged in a first direction, and the plurality of second light emitting areas are arranged in a second direction intersecting with the first direction, and wherein the second non-light emitting areas correspond to an area in which a plurality of patterns are included.