Smart Glass Display Auto-Shading Layer Transparency Control
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Solution Overview
Problem
Transparent display devices face challenges in maintaining high contrast ratios due to ambient light conditions, particularly high levels of ambient light which reduce readability and worsen image visibility.
Innovation Solution
The integration of ambient light sensors and a control module within the smart glass display system, which adjusts the transparency level of suspended particle devices or electrochromic layers to compensate for ambient light levels, ensuring optimal contrast and visibility.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If the transparency of the display device is increased to improve visibility, then the readability is improved, but the contrast ratio deteriorates under high ambient light conditions
Solution Approach 1:
The patent applies dynamics by making the transparency of the smart glass display adjustable rather than fixed. The display can dynamically change its transparency level in response to ambient light conditions, allowing it to maintain optimal contrast ratio while preserving readability. The control system adjusts transparency based on real-time ambient light sensor feedback, enabling the display to adapt between transparent and opaque states as needed.
Solution Approach 2:
The patent utilizes parameter changes by modifying the transparency parameter of the smart glass display based on ambient light conditions. The control system changes the transparency parameter dynamically - increasing opacity when ambient light is high to maintain contrast ratio, and increasing transparency when ambient light is low to improve visibility. This parameter adjustment resolves the contradiction between maintaining readability and preserving contrast ratio.
2Loss of information
If ambient light sensors and control modules are added to adjust transparency, then contrast ratio is maintained, but device complexity increases
Solution Approach 1:
The patent applies universality by integrating multiple functions into the smart glass display system. The display serves both as a visual output device and as a controllable transparency medium. The control module performs multiple functions including receiving ambient light sensor data, processing contrast ratio requirements, and adjusting display transparency. This multi-functionality reduces the need for separate dedicated components and simplifies the overall system architecture.
Solution Approach 2:
The patent merges the transparency control functionality directly into the display device itself. The ambient light sensors, control module, and display elements are integrated into a unified system rather than being separate independent components. This merging approach reduces system complexity by eliminating the need for external control mechanisms and simplifying the interface between components.
3Ease of operation
If transparency is increased for better visibility, then readability improves, but image visibility deteriorates in high ambient light
Solution Approach 1:
The patent applies dynamics by enabling the display to dynamically adjust its transparency level based on real-time ambient light conditions. When ambient light is low, the display maintains high transparency for optimal readability. When ambient light increases, the display dynamically reduces transparency to maintain image visibility and contrast ratio. This dynamic adjustment resolves the contradiction between readability and image visibility across different lighting conditions.
Solution Approach 2:
The patent implements feedback by using ambient light sensors to continuously monitor lighting conditions and feed this information back to the control module. The control module processes this feedback and adjusts the display transparency accordingly. This closed-loop feedback system ensures that the display automatically maintains optimal readability and image visibility by responding to changing ambient light conditions in real-time.
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 solution effectively maintains high contrast ratios across varying ambient light conditions, enhancing readability and visibility of images on transparent display devices by dynamically adjusting brightness and shading levels.
Implementation Method 1
The auto-shading layer includes suspended particle devices each of which configured to selectively provide different levels of transparency
Implementation Method 2
The at least one ambient light sensor is configured to detect a level of ambient light at the display layer
Data Source
AI summary
A smart glass display includes a first glass layer, a second glass layer, a display layer, an auto-shading layer and a control module. The display layer is disposed between the first glass layer and the second glass layer and includes an array of light emitting diodes and at least one ambient light sensor. The at least one ambient light sensor is configured to detect a level of ambient light at the display layer. The auto-shading layer includes suspended particle devices each of which configured to selectively provide different levels of transparency. The control module is configured to, based on an output of the at least one ambient light sensor, adjust a transparency level of at least a portion of the auto-shading layer.