Display device, door including the same, and refrigerator including the door
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Solution Overview
Problem
Conventional display devices occupy large spaces and can obstruct views, limiting their application due to their size and aesthetics, especially when used in areas like refrigerators, where space utilization and aesthetics are crucial.
Innovation Solution
A display device integrated into a rotatable door of a refrigerator, equipped with sensors to detect movement and control the display panel's state, allowing for adaptive image display based on the door's position, including dimming or turning off the backlight when the door is open, and scanning the storage chamber to display information about empty regions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of information
If a display device is installed in a refrigerator door, then useful information can be provided to users, but the display device occupies space and may obstruct the view through the door
Solution Approach 1:
The patent employs a transparent display panel that can change its optical properties. The display panel transitions between transparent and opaque states, allowing it to provide information when needed while maintaining view transparency when not in use. This resolves the contradiction by making the display area dynamically adjustable rather than permanently obstructive.
Solution Approach 2:
The display device incorporates motion sensors and controllers that dynamically adjust the display panel's state based on door movement. When the door is opened or closed, the system automatically controls the backlight unit to dim or turn off, and adjusts the display content accordingly. This dynamic behavior allows the display to adapt to changing conditions, providing information only when appropriate and maintaining view clarity otherwise.
2Illumination intensity
If the display panel maintains constant brightness for clear visibility, then information is always readable, but power consumption increases
Solution Approach 1:
The system uses periodic sensing and control cycles where the motion sensor continuously monitors door position and the controller periodically adjusts the backlight unit accordingly. The display brightness is dynamically adjusted in response to detected door movement, turning off or dimming when the door is open and restoring full brightness when closed, thereby reducing overall power consumption while maintaining readability when needed.
Solution Approach 2:
The patent implements a feedback control system where the motion sensor provides continuous information about door position and movement to the controller. Based on this feedback, the controller automatically adjusts the backlight unit and display panel state. This closed-loop control ensures the display maintains appropriate brightness for visibility while minimizing power consumption by adjusting only when necessary.
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 space utilization and aesthetics by allowing the display device to adjust its image display and brightness based on the door's position, providing useful information while maintaining a clear view and reducing power consumption.
Implementation Method 1
The detector may include at least one of an acceleration sensor, a gyro sensor, and a geomagnetic sensor.
Implementation Method 2
The detector may include at least one of an acceleration sensor, a gyro sensor, and a geomagnetic sensor.
Implementation Method 3
The detector may include at least one of an acceleration sensor, a gyro sensor, and a geomagnetic sensor.
Implementation Method 4
The detector may include an inductance sensor, and the controller may be configured to determine the frame is in the opening state when an inductance value indicated by the signal increases
Data Source
AI summary
A display device, a door including the display device and a refrigerator including the door are provided. A display device includes: a frame configured to be rotatably mounted to a base object; a display panel mounted to the frame; a detector disposed in the frame, and configured to detect a movement of the frame and output a signal corresponding to the movement; and a controller configured to determine a movement state of the frame based on the signal, and control the display panel based on the movement state.