Movable Vehicle Display Exposure Control for View and Power Saving
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Solution Overview
Problem
Large vehicle display devices obstruct the driver's view and cause unnecessary power consumption by displaying information on the entire screen, regardless of the content category, leading to inefficiencies in both visibility and energy usage.
Innovation Solution
A display device with a movable display unit and controller that adjusts the exposed screen area based on the type of information displayed, using a screen control signal with active and inactive periods to selectively activate horizontal pixel lines, allowing partial or full withdrawal of the display unit depending on the mode selected.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If the display size is increased to show more information, then the information display capability is improved, but the driver's view is blocked
Solution Approach 1:
The display unit is made movable rather than fixed, allowing it to be dynamically adjusted between extended and retracted positions. The display mover mechanism enables the display to change its exposure area according to different modes (full display mode, partial display mode, and retracted mode), resolving the contradiction between needing large display area and avoiding driver view obstruction.
2Loss of information
If the entire screen displays content regardless of content category, then the information completeness is improved, but unnecessary power consumption increases
Solution Approach 1:
The screen is segmented into multiple horizontal pixel line regions that can be independently controlled. The display driver selectively activates only the necessary pixel line regions based on content category and mode, rather than illuminating the entire screen. This segmentation approach maintains information completeness for the required content while reducing power consumption by keeping unnecessary regions inactive.
Solution Approach 2:
Instead of always activating the full screen, the system applies partial action by activating only the necessary portion of the display based on content requirements. The screen control signal with active and inactive periods ensures that only required pixel lines are illuminated, avoiding excessive power consumption while maintaining sufficient information display.
3Adaptability or versatility
If the display unit is made movable to adjust exposure area, then the adaptability to different content types is improved, but the device complexity increases
Solution Approach 1:
The display unit transitions from a static to a dynamic configuration, enabling it to adapt to different content types by changing its exposure area. The display mover provides the mechanical means for this dynamic adjustment, allowing the system to switch between full display mode, partial display mode, and retracted mode based on content requirements, thereby improving adaptability.
Data Source
Figure 1(a)~1(c)
Figure 2
Figure 3
AI summary
A display device and a control method therefor. The display device includes a casing having an opening, a display unit configured to be inserted into or withdrawn from the casing through the opening, a display mover connected to the display unit and configured to move the display unit, and a controller configured to transfer a signal to the display mover and the display unit. The display unit moves according to a mode so that an area exposed to an outside of the casing differs according to the mode.