Electrochromic Glare Control for LED Displays
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Solution Overview
Problem
Light-emitting diode devices experience glare issues due to sunlight, which affects their performance in terms of contrast ratio and resolution, despite advancements in non-light-emitting variable transmission devices improving glare control in vehicles and windows.
Innovation Solution
An assembly comprising a non-light-emitting, variable transmission device, such as an electrochromic device, and a light-emitting device, where the non-light-emitting device alters the intensity of the transmitted signal from the light-emitting device, using a control system to regulate voltage and manage glare, allowing for improved glare control and maintaining high contrast ratio and resolution.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a light-emitting diode device is used to create digital displays, then resolution and display size are improved, but glare control deteriorates when sunlight shines upon them
Solution Approach 1:
An electrochromic device is introduced as an intermediary between the sunlight and the LED display. This mediator can dynamically adjust its optical properties to block harmful glare while allowing the display to function normally, thus protecting the display without affecting its resolution or size capabilities
Solution Approach 2:
The electrochromic device changes its optical transmission parameter in response to detected glare conditions. By adjusting the degree of light blocking dynamically, the system maintains optimal display performance while eliminating glare, resolving the contradiction between resolution and glare control
2Object-affected harmful factors
If a non-light-emitting variable transmission device is used to control glare, then glare control is improved, but the device cannot emit light for display purposes
Solution Approach 1:
The patent combines two previously separate devices - a non-light-emitting electrochromic glare control device and a light-emitting LED display device - into a single integrated assembly. This merging allows the system to simultaneously achieve glare control and light emission for display purposes, eliminating the need to choose between the two functions
Solution Approach 2:
The integrated assembly performs multiple functions: it provides glare control through the electrochromic device while simultaneously enabling light emission and display through the LED device. This multi-functional design resolves the contradiction by making the system capable of both glare reduction and active display operation
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 assembly effectively reduces glare from ambient light, enhancing the clarity and image quality of the light-emitting device by regulating the transmission of light, thereby improving the overall performance of light-emitting diode devices.
Implementation Method 1
a non-light emitting variable transmission device (e.g., an electrochromic device) disposed on a first substrate and facing a transparent light emitting device disposed on a second substrate
Implementation Method 2
A light-emitting diode emits light in response to an electric current
Data Source
AI summary
An assembly can include a first substrate, a second substrate, a non-light-emitting, variable transmission device deposited on the first substrate, and a transparent light-emitting device deposited on the second substrate, where the non-light-emitting, variable transmission device faces the transparent light-emitting device, and where the non-light emitting device alters an intensity of a wavelength prior to reaching the transparent light-emitting device.