Microlens Array Curved Surface Geometry for OLED Light Collection
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Solution Overview
Problem
Current organic light-emitting diode (OLED) technologies face challenges in achieving high efficiency and compact design while maintaining light collection and conversion efficiency, particularly in reducing panel thickness and preventing external light interference.
Innovation Solution
Incorporating a microlens array with a higher filling factor and curved surfaces, a Fresnel lens, and a color conversion layer with quantum dots, along with a light-blocking layer and insulating films to enhance light collection and conversion efficiency, and reduce panel thickness.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If conventional microlens structures are used to collect light, then light collection efficiency is achieved, but panel thickness increases and area utilization decreases
Solution Approach 1:
The microlenses are designed with curved surfaces on planes orthogonal to the light-emitting device, creating optimized light collection geometry that improves efficiency while reducing the thickness required compared to conventional flat or simple spherical lens structures
Solution Approach 2:
The invention transitions from conventional two-dimensional circular microlens cross-sections to three-dimensional shapes with higher filling factors, optimizing space utilization and reducing panel thickness while maintaining or improving light collection efficiency
2Ease of manufacture
If microlenses are arranged with conventional circular cross-sections, then manufacturing is simplified, but area utilization and filling factor are reduced
Solution Approach 1:
The microlenses employ curved surface geometries that achieve higher filling factors and better area utilization while remaining compatible with standard semiconductor manufacturing processes, thus balancing manufacturing ease with improved optical performance
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 a more efficient and compact OLED panel with improved light collection and conversion, reduced external light interference, and enhanced display quality, resulting in a highly convenient, useful, and reliable functional panel.
Implementation Method 1
The microlens array collects the first light and includes a plurality of microlenses
Implementation Method 2
The microlens is a Fresnel lens
Implementation Method 3
a color conversion layer with quantum dots
Data Source
AI summary
A novel functional panel that is highly convenient, useful, or reliable is provided. The functional panel includes a pixel including a microlens array and a light-emitting device. The light-emitting device emits first light. The microlens array collects the first light. The microlens array includes a plurality of microlenses. The microlenses have a cross section having a shape with which they can be arranged with a filling factor higher than that of a circle on a plane parallel to the light-emitting device. The microlenses have a curved surface on a plane orthogonal to the plane parallel to the light-emitting device. The convex side of the curved surface faces the light-emitting device.