Reflective Structure Enhances LED Luminance in Display Devices
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Solution Overview
Problem
Display devices, particularly light emitting diode (LED) based ones, face challenges in achieving improved reflective luminance in the longitudinal direction, which affects their overall performance and viewing angles.
Innovation Solution
The implementation of a display device design that includes first and second electrodes with reflective conductive materials like Ag, Cu, or Al, and a reflective structure with a core layer and a reflective conductive pattern surrounding it, positioned between the electrodes to enhance light reflection towards the upper direction.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If reflective structures are added to improve reflective luminance, then device complexity increases
Solution Approach 1:
The reflective structure serves multiple functions simultaneously: it provides electrical isolation between the LED and underlying structures, reflects light in the longitudinal direction to improve luminance, and maintains structural integrity. The insulating film layer with reflective properties combines insulation and reflection functions in a single integrated component, reducing overall device complexity despite the added functionality
Solution Approach 2:
The reflective structure is nested within the existing display device architecture, with the core layer, reflective conductive pattern, and insulating film layer arranged in concentric or layered configurations. This nesting approach allows the reflective structure to be integrated into the existing LED assembly without requiring separate housing or additional space, minimizing the increase in 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 design significantly improves reflective luminance in the longitudinal direction of the light emitting diode, enhancing the display's performance and viewing angles by effectively guiding light emitted from the LED.
Implementation Method 1
Each of the first electrode and the second electrode may include a reflective conductive material. The reflective conductive material may include Ag, Cu or Al. Each of the first electrode and the second electrode may reflect the light emitted from the light emitting diode toward an upper direction of the display device.
Data Source
AI summary
A display device comprises first banks disposed on a substrate and spaced apart from each other in a first direction; a first electrode and a second electrode disposed on the first banks; a light emitting diode disposed between the first electrode and the second electrode; and at least one reflective structure disposed between the first electrode and the second electrode and spaced apart from the light emitting diode. The light emitting diode and the at least one reflective structure are spaced apart from each other in a second direction intersecting the first direction.