Transparent LED Display Anti-Reflective Interlayer Design
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Solution Overview
Problem
Existing transparent LED displays suffer from poor contrast due to reflection from exposed surfaces and inner interfaces, requiring bulky and expensive filters that increase complexity and size.
Innovation Solution
A transparent LED display design featuring an inner pane of glass with a conductive coating and interlayers that encapsulate light-emitting diodes, reducing visible light reflection and enhancing contrast by using a grid-like conductive pattern and anti-reflective coatings.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If filters or screens are provided adjacent the emitting surfaces of displays to improve contrast, then contrast is improved, but device complexity and size increase
Solution Approach 1:
The patent integrates the anti-reflective filter functionality directly into the interlayer of the LED display assembly, merging the filter and display into a single integrated structure. This eliminates the need for separate filter components, reducing device complexity while maintaining contrast improvement benefits
Solution Approach 2:
The interlayer serves multiple functions simultaneously: it encapsulates the LEDs, provides structural support, and acts as an anti-reflective filter to improve contrast. This multi-functionality reduces the overall number of components needed in the display system
2Illumination intensity
If filters or screens are provided adjacent the emitting surfaces of displays to improve contrast, then contrast is improved, but the display assembly size increases
Solution Approach 1:
The filter is merged with the interlayer, eliminating the need for additional space for separate filter components. The anti-reflective properties are achieved within the existing interlayer thickness, preventing increase in display assembly size
Solution Approach 2:
The anti-reflective filter functionality is nested within the interlayer structure, utilizing the existing space between glass panes rather than adding external components. This nesting approach maintains compact display assembly dimensions
3Illumination intensity
If filters or screens are provided adjacent the emitting surfaces of displays to improve contrast, then contrast is improved, but cost increases
Solution Approach 1:
The anti-reflective filter is combined with the interlayer, eliminating the need for separate filter manufacturing and assembly processes. This integration reduces overall manufacturing steps and associated costs
Solution Approach 2:
The interlayer performs multiple functions including LED encapsulation, structural support, and anti-reflective filtering, reducing the total bill of materials and manufacturing complexity compared to using separate specialized components for each function
4Illumination intensity
If reflection from inner interfaces is reduced, then image quality is improved, but manufacturing complexity increases
Solution Approach 1:
The anti-reflective properties are integrated into the interlayer, reducing reflection from inner interfaces while maintaining a relatively simple manufacturing process that utilizes standard lamination techniques
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 achieves improved contrast and reduced reflection, making images clearer and less distracting, while integrating the filter within the display to minimize bulk and cost.
Implementation Method 1
a visible light reflection (Illuminant D65, 10 degree observer) from the second major surface of the inner pane of glass is 7.6% or less
Implementation Method 2
at least one (a first) interlayer provided between the inner pane of glass and the outer pane of glass, wherein the first interlayer encapsulates the one or more light emitting diodes
Implementation Method 3
one or more light emitting diodes provided between the inner pane of glass and the outer pane of glass
Data Source
Figure 1
Figure 2
Figure 2a~2b
AI summary
A light emitting diode display is described including inner and outer panes of glass. The inner pane of glass has first and second major surfaces wherein a visible light reflection from the second major surface is 7.6% or less. The outer pane of glass is in a parallel relationship with the inner pane of glass. One or more light emitting diodes (LEDs) and at least one (a first) interlayer is provided between the inner and outer panes of glass. The first interlayer encapsulates the one or more LEDs. A conductive coating may be formed over the first major surface of the inner pane of glass and at least one (a first) of the one or more LEDs may be provided on the conductive coating, the first light emitting diode being in electrical communication with the conductive coating. The conductive coating may be transparent to visible light.