HUD Light Shielding Plate for Variable Shape Image Projection
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Solution Overview
Problem
Current head-up display (HUD) systems are limited in displaying information of different shapes, as they can only project rectangular shapes, failing to accurately represent various image shapes such as circular, triangular, or hexagonal forms.
Innovation Solution
A display device comprising a head-up display (HUD) and a light shielding plate, where the HUD sends information about the shape and location of an image to the light shielding plate, which then provides a light transmitting region matching the image's shape and location, filtering out background regions to display images of various shapes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Shape
If a traditional HUD displays information using a fixed rectangular shape, then the display structure is simple and easy to manufacture, but the display cannot accurately represent images of different shapes
Solution Approach 1:
The display system is divided into two functional parts: the HUD module that generates images and the light shielding plate that controls light transmission. By segmenting the display function, the complex shape control is achieved through the light shielding plate's variable light transmitting regions rather than changing the entire display structure.
Solution Approach 2:
The light shielding plate acts as an intermediary component between the HUD and the external environment. It receives image information from the HUD and controls the light transmission to achieve different display shapes, serving as a mediator that translates image data into shape-controlled light patterns.
2Measurement precision
If the light shielding plate provides a light transmitting region matching the image shape, then the visual clarity and accuracy of displayed images are improved, but the device complexity increases
Solution Approach 1:
The light shielding plate employs dynamic control of light transmitting regions through voltage application. By dynamically adjusting which regions transmit light based on the image shape requirements, the system achieves precise shape representation without requiring physical reconfiguration of the entire display structure.
Solution Approach 2:
The system changes the optical parameters (light transmission properties) of the light shielding plate regions based on voltage input. By controlling the light transmission parameter of different regions according to the image shape, the system achieves accurate shape display through parameter modulation rather than structural complexity.
3Illumination intensity
If the light shielding plate uses a normally white liquid crystal display screen, then the display can achieve high transmittance in daylight conditions, but the transmittance may be too high at night requiring additional voltage control
Solution Approach 1:
The normally white liquid crystal display screen dynamically adjusts its light transmission properties based on ambient lighting conditions. By applying voltage to specific regions, the system can reduce transmittance in low-light conditions while maintaining high transmittance in daylight, adapting to varying environmental conditions.
Solution Approach 2:
The system changes the light transmission parameter of the liquid crystal display screen based on voltage input and ambient conditions. By modulating the transmittance parameter dynamically, the display adapts to different lighting environments, maintaining optimal visibility whether in daylight or nighttime conditions.
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 allows for the accurate representation of different shapes, enhancing user experience by filtering out irrelevant background regions and improving the visual clarity of information displayed on the HUD.
Implementation Method 1
the light shielding plate is a normally white liquid crystal display screen or a normally black liquid crystal display screen
Implementation Method 2
applying a voltage to regions except the light transmitting region
Implementation Method 3
an optical system arranged on an optical path of the display device and configured to emit light from the light shielding plate to a windshield of a vehicle-mounted device
Data Source
AI summary
The present disclosure provides a display device and a display system. The display device includes a head-up display and a light shielding plate arranged at a light-exiting surface side of the head-up display. The head-up display is configured to display an image, and send information about a shape and a location of the image to the light shielding plate; the light shielding plate is configured to receive the information about the shape and the location of the image, and provide a light transmitting region having a shape and a location identical to those of the image according to the information.