Transparent Display Variable Shading for Bright-Room Visibility
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Transparent OLED displays face challenges in bright room environments due to reduced visibility caused by decreases in ambient contrast ratio (ACR) from external light.
Innovation Solution
A transparent display with a variable shading panel that includes a controller to selectively control regions of the shading panel to be in shading or transparent modes, using electrochromic devices, based on video content parameters and ambient light conditions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If a transparent OLED display is used, then transparency and modern design are achieved, but visibility decreases in bright room environments due to reduced ambient contrast ratio
Solution Approach 1:
The display panel is divided into two distinct layers: a transparent display layer and a variable shading panel layer. This segmentation allows each layer to perform its specific function independently - the transparent display layer provides visibility and modern design, while the variable shading panel layer controls light transmission to maintain ambient contrast ratio in different lighting conditions.
Solution Approach 2:
The variable shading panel is designed to dynamically adjust its light-blocking properties based on ambient lighting conditions. The panel can switch between transparent and shading modes, allowing the display to adapt to different environments (bright rooms vs. dark rooms) and maintain optimal visibility and ambient contrast ratio throughout.
2Object-affected harmful factors
If the entire shading panel is set to shading mode, then visibility is improved in bright environments, but the transparent display characteristics are reduced
Solution Approach 1:
Different regions of the variable shading panel can be independently controlled to have different optical properties. Regions displaying video content can be set to shading mode to block external light and improve visibility, while regions not displaying content remain in transparent mode to maintain the transparent display characteristics. This local differentiation allows simultaneous optimization of both visibility and transparency.
Solution Approach 2:
Instead of applying shading mode to the entire panel, the invention applies shading mode only to the necessary portions where video content is displayed. This partial action approach provides sufficient light blocking for content visibility while preserving transparency in other areas, thus maintaining the overall transparent display characteristics.
3Illumination intensity
If a variable shading panel is added to the transparent display, then visibility and ambient contrast ratio are enhanced, but device complexity increases
Solution Approach 1:
The variable shading panel is integrated with the transparent display panel to form a unified display system. The controller manages both the transparent display layer and the variable shading panel layer, coordinating their operations to achieve enhanced visibility and ambient contrast ratio without requiring separate independent systems.
Solution Approach 2:
The variable shading panel serves multiple functions: it blocks external light to improve visibility in bright environments, maintains transparency in dark environments, and can be selectively applied to different regions based on content requirements. This multi-functionality justifies the added complexity by providing comprehensive control over display characteristics in various conditions.
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
Enhances visibility by increasing the ambient contrast ratio (ACR) in bright environments through selective shading, improving visibility and maximizing display characteristics.
Implementation Method 1
The variable shading panel may include an electrochromic device, and the controller may be configured to: supply power to the several shading regions to be in the shading mode; and supply no power to the remaining shading regions to be in the transparent mode.
Data Source
AI summary
The present disclosure relates to a transparent display having a variable light-shielding panel which may increase visibility by increasing ACR even in a bright room environment, and an image display device including same. The present disclosure may provide an image display device comprising: a transparent display including a transparent display panel and a variable light-shielding panel which overlaps one lateral surface of the transparent display panel; and a controller for performing control so that a portion of the variable light-shielding panel, which corresponds to a position of a video content being displayed in the transparent display panel, is in a light-shielding mode and the remaining portion is in a transparent mode.