Dual-Layer Display Masking for Hidden Pattern Surfaces
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Solution Overview
Problem
Existing display devices struggle to make the color and pattern on the surface completely invisible during use while maintaining a luxurious aesthetic appearance when not in use.
Innovation Solution
A display device comprising a first display unit that switches between black and a predetermined pattern in response to voltage application, with a second display unit visible through openings, and a switching unit to ensure the first display unit is black when the second is on, using electronic paper to maintain the pattern when not in use.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Shape
If a screen with woodgrain color and pattern is used to match the surrounding panel, then the aesthetic appearance is improved when not in use, but the pattern cannot be completely invisible in dark regions when the display is in use
Solution Approach 1:
The display device is divided into two separate display units: a first display unit (electronic paper) that shows the woodgrain pattern and a second display unit (liquid crystal display) that shows the actual display content. This segmentation allows each unit to specialize in one function, resolving the contradiction between aesthetic appearance and complete invisibility of the pattern.
Solution Approach 2:
A switching unit acts as an intermediary between the two display units, controlling which unit is active at any given time. When the second display unit is in use, the switching unit ensures the first display unit displays black to make the pattern invisible, while when the second display unit is off, the first display unit shows the woodgrain pattern for aesthetic purposes.
2Shape
If the first display unit is always visible to show the pattern, then the aesthetic appearance is maintained, but power consumption increases
Solution Approach 1:
The first display unit dynamically switches between displaying the woodgrain pattern and displaying black based on the operational state of the second display unit. This dynamic behavior allows the system to maintain aesthetic appearance only when needed (when the second display is off), thereby reducing unnecessary power consumption.
Solution Approach 2:
The first display unit discards its pattern display function when the second display unit is in use, and recovers it when the second display unit is off. This allows the system to alternate between aesthetic presentation and power-saving modes, optimizing both appearance and energy efficiency.
3Area of stationary object
If the first display unit is disposed to overlap the black matrix of the second display unit, then the pattern can be displayed when not in use without reducing the screen display area, but the structure becomes more complex
Solution Approach 1:
The first display unit is nested within the same physical space as the second display unit, with both units sharing the same display area. The first display unit overlaps the black matrix region of the second display unit, allowing the pattern to be displayed without encroaching on the active display area of the second unit. This nesting arrangement maximizes space utilization while maintaining full screen real estate for the second display.
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
The solution effectively prevents the pattern from being visible during use while reducing power consumption and maintaining a luxurious aesthetic appearance by ensuring the first display unit is black when the device is active, and the pattern is visible when inactive.
Implementation Method 1
a first display unit having a plurality of openings, the first display unit being configured to switch between black and a predetermined pattern in response to application of a voltage; preferably electronic paper
Data Source
Figure 1
Figure 2
Figure 3A~3B
AI summary
A display device includes a first display unit having a plurality of openings, the first display unit being configured to switch between black and a predetermined pattern in response to application of a voltage; a second display unit disposed adjacent to a rear side of the first display unit at a position where display contents are visible through the plurality of openings; and a switching unit configured to switch the first display unit to black display when the second display unit is turned on, and to switch the first display unit to a display state of the pattern when the second display unit is turned off.