Transparent Display Ambient Contrast Ratio Adjustment
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Solution Overview
Problem
Transparent displays face challenges in maintaining optimal ambient contrast ratio (ACR) due to varying ambient light conditions, affecting the clarity of both the display frame and background images.
Innovation Solution
A method involving a transmittance adjustment plate at the back of the transparent display, controlled by a processor and voltage generator, adjusts the transmittance and luminance to maintain a preset ACR by adding a grayscale layer on top of the frame, using a processor to calculate optimal transmittance and luminance values based on ambient illuminance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If the transmittance of the transparent display is increased to improve background visibility, then the clarity of the background image is improved, but the clarity of the display frame deteriorates
Solution Approach 1:
The patent applies a transmittance adjustment plate that can dynamically change its transmittance properties. By controlling the transmittance of this plate, the system can adapt to different ambient light conditions and maintain optimal contrast ratio between the display frame and background image, resolving the contradiction between background visibility and frame clarity
Solution Approach 2:
The patent changes the transmittance parameter of the adjustment plate to control the amount of ambient light passing through the display. By adjusting this parameter based on ambient illuminance levels, the system maintains appropriate contrast between the frame and background, solving the contradiction between improved background visibility and maintained frame clarity
2Illumination intensity
If the luminance of the transparent display is increased to improve display frame visibility, then the clarity of the display frame is improved, but the clarity of the background image deteriorates
Solution Approach 1:
The system dynamically adjusts both the transmittance of the adjustment plate and the luminance of the display based on ambient light conditions. This dynamic control allows the system to maintain optimal visibility of the display frame while preserving background image clarity, resolving the contradiction between these two requirements
Solution Approach 2:
The patent simultaneously adjusts two parameters: the transmittance of the adjustment plate and the luminance of the display. By coordinating these parameter changes based on ambient illuminance, the system maintains appropriate contrast and visibility for both the frame and background, solving the contradiction between frame visibility and background clarity
3Illumination intensity
If a backlight is installed to improve display visibility, then the display frame clarity is improved, but the transparency of the display deteriorates
Solution Approach 1:
The patent introduces a transmittance adjustment plate as an intermediary component between the ambient light source and the display. This plate mediates the amount of ambient light that passes through the display, allowing the system to maintain transparency while achieving adequate visibility without requiring a backlight
Solution Approach 2:
Instead of using a traditional backlight structure, the patent uses ambient light that has been modulated by the transmittance adjustment plate to illuminate the display. This approach copies the function of a backlight (providing illumination) while maintaining the transparency characteristic, resolving the contradiction between visibility and transparency
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 dynamically adjusts the ACR to maintain consistent visual quality across different ambient light conditions without altering the display structure, ensuring the clarity of both the frame and background remains optimal.
Implementation Method 1
controlling a transmittance of the transmittance adjustment plate through a voltage generator to the adjustment transmittance
Data Source
AI summary
A method for adjusting ambient contrast ratio and an electronic apparatus are provided. The electronic apparatus includes a transparent display and a transmittance adjustment plate disposed at the back of the transparent display. In the electronic apparatus, an adjustment transmittance used to adjust the transmittance adjustment plate and a luminance percentage used to adjust the transparent display are calculated, a grayscale layer is generated based on the luminance percentage; a voltage generator is used to control the transmittance of the transmittance adjustment plate to the adjustment transmittance, and in a case that the transmittance of the transmittance adjustment plate is the adjustment transmittance, a graphic controller is used to display a frame on the transparent display while display the grayscale layer on top of the frame.