In-Vehicle Display Module Layout for Uniform Side-View Brightness
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Solution Overview
Problem
In-vehicle display devices with large flat screens often experience inconsistent brightness, leading to poor display effects, and the use of flexible screens to address this issue increases costs.
Innovation Solution
The implementation of a display apparatus with at least two display modules, including a user front-view and user side-view module, where the luminous and viewing angles are adjusted to ensure consistent brightness perception by aligning the emission direction of light-emitting units with the normal direction of the display modules, reducing the difference in brightness perceived by the user.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If a flat screen is applied to prepare the display screen of the in-vehicle display device, then the cost is reduced, but the brightness perceived by users at each point of the display screen is inconsistent, making the display effect poor
Solution Approach 1:
The display screen is divided into multiple independent display modules (front-view display module and side-view display modules) arranged in specific spatial positions. Each module can be independently adjusted and optimized, allowing the flat screen to achieve consistent brightness perception across different viewing angles without requiring expensive flexible materials.
Solution Approach 2:
The patent transitions from a single flat display surface to a multi-dimensional spatial arrangement of display modules. By positioning modules at different locations (front and side views) and adjusting their luminous angles and viewing angles, the system achieves uniform brightness perception across three-dimensional viewing space while using cost-effective flat screens.
2Illumination intensity
If a flexible screen and flexible substrate are used to enable both sides of the display screen to be bent toward the user, then the brightness consistency is improved, but the cost of the in-vehicle display device increases
Solution Approach 1:
Instead of using expensive flexible screens, the patent segments the display into multiple rigid flat modules positioned at different spatial locations. This segmentation allows each module to be optimized independently for its specific viewing angle, achieving overall brightness consistency without requiring flexible materials.
Solution Approach 2:
The patent replaces expensive flexible screens with more cost-effective flat screen modules. By using standard flat display technology in a multi-module configuration, the system achieves the desired optical performance at a lower cost, sacrificing the flexibility of the screen for economic efficiency.
3Illumination intensity
If multiple display modules with different viewing angles and luminous angles are arranged in sequence, then the brightness perception consistency is improved, but the device complexity increases
Solution Approach 1:
Each display module is configured with specific local optical characteristics (luminous angle and viewing angle) matched to its spatial position. The front-view module and side-view modules have different angular parameters optimized for their respective viewing directions, achieving uniform brightness perception across the entire display system while maintaining relatively simple individual module designs.
Data Source
AI summary
Disclosed are a display apparatus and an in-vehicle display device. The display apparatus includes at least two display modules. The display modules are arranged in sequence along a first direction and includes at least one user front-view display module and at least one user side-view display module. A difference between a luminous angle of each user side-view display module and a viewing angle of the user side-view display module is within a preset difference range. The viewing angle is formed by a second direction and a normal direction of a corresponding display module, the second direction being from a point on the corresponding display module toward the user position; the luminous angle is formed by an emission direction and a normal direction of the corresponding display module; for each user side-view display module, an angle formed by the second direction and the emission direction is within a preset angle range.