Display device and control method therefor
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Solution Overview
Problem
Conventional see-through type display devices hinder vision when displaying videos for a long time, as they fail to allow the space behind the screen to be seen transparently.
Innovation Solution
A display device with a control unit that switches between a main video and a transparent video, where the transparent video has portions that allow the space behind the screen to be seen by altering the display unit's operation based on input video signals, using techniques such as liquid crystal panels, light guide plates, and organic electro-luminescence panels.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Duration of action of stationary object
If the display unit continuously displays the main video based on the input video signal, then the video display function is maintained, but the space behind the display screen cannot be seen transparently and the device hinders vision
Solution Approach 1:
The control unit switches the display unit between displaying the main video and displaying a transparent video that allows the space behind the display screen to be seen. This periodic switching resolves the contradiction by maintaining video display function for extended periods while periodically eliminating vision hindrance through transparent display intervals
Solution Approach 2:
The display device dynamically adjusts its transparency state based on control signals from the control unit. The display unit can transition between opaque (main video display) and transparent (space visible) states, allowing the system to adapt between maintaining video display and eliminating vision hindrance
2Object-affected harmful factors
If the display unit is designed to show the space behind the screen transparently, then vision is not hindered, but the ability to display videos for long periods is compromised
Solution Approach 1:
The control unit implements periodic switching between main video display mode and transparent display mode. This allows the device to maintain video display capability over extended periods while periodically providing transparent views to prevent vision hindrance
Solution Approach 2:
The display function is segmented into two distinct modes: main video display and transparent display. The control unit manages switching between these segmented functions, allowing the device to alternate between maintaining video display duration and enabling transparent viewing
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
Enables the space behind the display screen to be viewed transparently without hindering vision, even during long video displays, by incorporating a control unit that manages the display unit to show a transparent video alongside the main video.
Implementation Method 1
a liquid crystal panel, a transparent light guide plate disposed in back of the liquid crystal panel
Implementation Method 2
an edge light type backlight having a transparent light guide plate
Implementation Method 3
a see-through type organic electro-luminescence (hereinafter referred to as EL) display device having a transparent pixel electrode
Data Source
AI summary
A display device includes a display unit having a function of showing a space behind a display screen transparently and a control unit for controlling the display unit based on an input video signal. The control unit controls the display unit to display a transparent video having a transparent portion through which the space behind the display screen can be seen transparently, while displaying a main video based on the input video signal. The control unit may generate an instruction signal indicating a display period of the transparent video and may control the display unit in accordance with the generated instruction signal, or may control the display unit in accordance with an instruction signal provided externally. With this, there is provided a see-through type display device which does not hinder a vision when displaying a video for a long time.