Information Display Device Dynamic Pixel Control for Privacy
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Solution Overview
Problem
Information display devices with reflective layers suffer from light attenuation, making the display less visible, while devices without reflective layers allow the display to be seen through the surface member, compromising privacy and visibility.
Innovation Solution
An information display device comprising a surface member that is partially transmissive, a display on the backside, a light measurement unit, and a controller that adjusts pixel values and brightness to match the ambient light, ensuring the display is not visible through the surface member.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If a reflective layer is provided on the surface member, then the display content is visible through the surface member, but light from the display is attenuated and the surface appears weakened
Solution Approach 1:
The patent changes the parameter of the non-information area pixel values to match the color of the surface member, and dynamically adjusts brightness based on ambient light conditions. This resolves the contradiction by making the display invisible when not in use while maintaining full visibility when needed, without light attenuation.
2Object-affected harmful factors
If a reflective layer is not provided, then the display surface cannot be seen through the surface member, but the display itself becomes visible through the surface member
Solution Approach 1:
The patent implements dynamic control where the display alternates between showing content and matching the surface member's color based on ambient light conditions. This dynamic switching resolves the contradiction by ensuring the display is invisible both when showing content and when not in use, eliminating both harmful visibility effects.
3Object-generated harmful factors
If the pixel values are changed to match the surface member color, then the display becomes invisible through the surface member, but the visibility of display content may be reduced
Solution Approach 1:
The patent segments the display area into information areas (where content is displayed) and non-information areas (where pixels match the surface member color). This segmentation resolves the contradiction by allowing different regions to serve different functions - content visibility where needed and invisibility where not needed, maintaining overall display effectiveness.
Data Source
AI summary
The information display device includes a surface member, a display, a light measurement unit, and a controller. The surface member is at least partially transmissive for light. The display is disposed on a back side of the surface member and is capable of displaying a display image including an information area for displaying information and a non-information area for displaying no information. The light measurement unit measures the amount of ambient light around the information display device. The controller acquires the amount of light measured by the light measurement unit and changes a pixel value of a display image according to the amount of light so that the display is difficult to be seen through a surface of the surface member.