Transparent display device and display window

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Solution Overview

Problem

Transparent display devices suffer from light leakage on the non-display side, which affects the background image visibility and poses a risk to organisms like birds and insects, potentially causing accidents and ecological harm.

Innovation Solution

The transparent display device incorporates a light-emitting element and a wavelength conversion layer on opposite sides of a circuit layer, converting visible light into infrared or ultraviolet light on the non-display side, which is not visible to humans but detectable by birds and insects.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Illumination intensity

If a transparent display device is used to display images, then the display function is achieved, but light leakage occurs on the non-display side affecting background visibility and causing harm to organisms

Engineering Contradiction:

Improvedisplay brightnessVSAvoidlight leakage to organisms

Core Design Contradiction:

Illumination intensityVSObject-affected harmful factors

Solution Approach 1:

The patent changes the wavelength parameter of light by introducing a wavelength conversion layer that converts visible light from the light-emitting element into infrared or ultraviolet light on the non-display side. This parameter transformation eliminates the harmful visible light leakage while preserving the display function, as infrared and ultraviolet light are invisible to human eyes and most organisms.

Inventive Principle:

Principle #35Parameter changes

Solution Approach 2:

The patent converts the harmful visible light that causes light leakage and ecological harm into beneficial invisible infrared or ultraviolet light. The wavelength conversion layer transforms the problematic visible spectrum into non-visible spectra, thereby eliminating the harmful effect while maintaining the energy utilization for display purposes.

Inventive Principle:

Principle #22Blessing in disguise (Convert harm into benefit)

2Ease of operation

If conventional smart windows are used, then display transparency is achieved, but birds and insects cannot detect the window leading to collisions

Engineering Contradiction:

Improvetransparency for human viewVSAvoiddetectability by organisms

Core Design Contradiction:

Ease of operationVSReliability

Solution Approach 1:

The patent applies different optical properties to different sides of the display device. The front display side maintains visibility for humans, while the back non-display side emits infrared or ultraviolet light that is detectable by birds and insects. This local differentiation of optical characteristics solves both the transparency requirement and the detectability requirement for different organism types.

Inventive Principle:

Principle #3Local quality

Solution Approach 2:

The patent changes the wavelength parameter of emitted light on the non-display side to infrared or ultraviolet ranges, which are detectable by birds and insects but invisible to humans. This parameter transformation enables organisms to detect the window presence without affecting human viewing experience.

Inventive Principle:

Principle #35Parameter changes

3Productivity

If light-emitting elements are placed on one side of the circuit layer, then display function is achieved, but visible light leaks to the non-display side

Engineering Contradiction:

Improvedisplay outputVSAvoidbackside light emission

Core Design Contradiction:

ProductivityVSObject-generated harmful factors

Solution Approach 1:

The patent introduces a wavelength conversion layer as an intermediary between the light-emitting element and the non-display side. This intermediary layer receives visible light from the light-emitting element and converts it into infrared or ultraviolet light, thereby mediating the light transmission to eliminate harmful visible light emission on the non-display side while preserving display output.

Inventive Principle:

Principle #24Intermediary (Mediator)

Solution Approach 2:

The wavelength conversion layer changes the wavelength parameter of light transmitted to the non-display side, converting visible light into infrared or ultraviolet light. This parameter transformation maintains the energy output for display purposes while eliminating the harmful visible light leakage effect.

Inventive Principle:

Principle #35Parameter changes

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 configuration reduces backside light leakage, enhances visibility of the environmental scene, and decreases the likelihood of bird or insect collisions, maintaining transparency and ecological integrity.

Implementation Method 1

The wavelength conversion layer is adapted to convert the visible light into infrared light or ultraviolet light

Methodology Applied

Scientific EffectWavelength conversion: Photoluminescence

Data Source

PatentUS20260068371A1Transparent display device and display window

Publication Date: 2026.03.05 AU OPTRONICS CORP

AI summary

A transparent display device includes a transparent substrate, a circuit layer, a light-emitting element, and a wavelength conversion layer. The circuit layer is disposed on the transparent substrate, and the light-emitting element is adapted to emit visible light and is disposed on the circuit layer. The light-emitting element and the wavelength conversion layer are respectively disposed on two opposite sides of the circuit layer. The wavelength conversion layer is adapted to convert the visible light into infrared light or ultraviolet light. A display window is also provided.