Vehicle Instrument Display Region Segmentation and Brightness Control
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Solution Overview
Problem
Conventional vehicle display devices suffer from a design issue where the background of the liquid crystal display becomes visible due to its transparency, leading to a deterioration in design aesthetics.
Innovation Solution
A vehicle instrument featuring a transmissive display unit with a first and second display region, a light source, and a control unit that adjusts brightness and display content in response to an input signal, ensuring the second display region turns dark and the light source is lit at a predetermined brightness to minimize background visibility, while synchronizing dramatized displays between regions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If the display unit is made transmissive to improve visibility and design, then the background becomes visible through the display, but this causes background light leakage that deteriorates design aesthetics
Solution Approach 1:
The display unit is divided into multiple independent display regions (first display region, second display region, third display region). This segmentation allows different regions to be controlled independently, enabling the patent to darken specific regions (second display region) to prevent background light leakage while maintaining visibility in other regions, thus resolving the contradiction between transmissive visibility and background leakage.
Solution Approach 2:
The patent implements dynamic brightness control where the light source brightness is adjusted based on the display mode. In normal mode, the light source operates at configured brightness for optimal visibility. In dramatized mode, when the second display region is darkened, the light source brightness is reduced to predetermined brightness level to minimize background light leakage through the darkened region, while maintaining adequate illumination for other active display regions.
2Illumination intensity
If the light source brightness is increased to improve display visibility, then the background light leakage becomes more noticeable, but reducing brightness deteriorates display visibility
Solution Approach 1:
The light source brightness is dynamically adjusted based on the operational mode. In normal operation mode, the light source provides configured brightness for optimal display visibility. When dramatized mode is activated and the second display region is darkened, the light source brightness is automatically reduced to predetermined brightness level. This dynamic adjustment ensures that background light leakage is minimized during dramatized displays while maintaining adequate visibility during normal operation, resolving the contradiction between visibility and background light visibility.
3Object-affected harmful factors
If the second display region is darkened to prevent background visibility, then the overall display brightness may be insufficient, but maintaining brightness prevents the dramatized display effect
Solution Approach 1:
The display unit is segmented into multiple independent regions that can be controlled separately. The second display region can be darkened to prevent background visibility and create dramatized display effects, while the first and third display regions maintain adequate brightness for information display. This segmentation allows the system to achieve both background visibility prevention and sufficient overall display brightness simultaneously.
Solution Approach 2:
The light source brightness is dynamically adjusted based on the display mode. In dramatized mode, when the second display region is darkened, the light source brightness is reduced to predetermined level to enhance the dramatized effect. The control unit manages the balance between darkened regions and active display regions, ensuring that the overall display maintains sufficient brightness for information communication while achieving the desired dramatized display effect in specific regions.
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
This solution maintains an excellent design by preventing excessive brightness differences and background light leakage, providing a clear and uniform visual impression across the display regions, even when the second display region is darkened.
Implementation Method 1
a light source that is configured to illuminate the display unit from behind of the display unit
Data Source
AI summary
This instrument for the vehicle includes: a display unit; a light source; and a control unit, wherein in response to an input of an dramatized-display instruction signal, the control unit causes an dramatized display that is different from the predetermined display to be displayed in the first display region, causes the second display region to turn dark, and causes the light source to be lit with a predetermined brightness when the configured brightness is greater than the predetermined brightness.