Backlight Module View Angle Controller Segmentation
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Solution Overview
Problem
Existing display technologies for portable devices do not efficiently switch between narrow and wide view angles without the need for auxiliary tools, compromising user convenience and privacy in public settings.
Innovation Solution
A backlight module with a first and second light source component, where the first light source component emits light through an initial view angle region and the second light source component emits light through a view angle compensation region, allowing independent control to switch between narrow and wide view angles without additional tools.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If privacy glasses or cover parts are used to narrow the view angle, then privacy is protected, but device complexity and user convenience deteriorate due to additional auxiliary tools
Solution Approach 1:
The backlight module is segmented into multiple independent light source components (first light source component and second light source component), each controlling a specific light exit region. This segmentation enables independent control of different viewing angle regions without requiring external auxiliary tools, thus protecting privacy while avoiding additional device complexity
Solution Approach 2:
The backlight module integrates multiple functions into a single device: it provides both narrow view angle mode (for privacy protection) and wide view angle mode (for normal viewing) through different light source components. This multi-functionality eliminates the need for separate auxiliary tools like privacy glasses or cover parts, maintaining user convenience while protecting privacy
2Object-affected harmful factors
If privacy glasses or cover parts are used to narrow the view angle, then privacy is protected, but ease of operation deteriorates due to additional auxiliary tools
Solution Approach 1:
The patent merges the privacy protection function and the display function into a single integrated backlight module. The first and second light source components work together within the same device, eliminating the need for separate auxiliary tools. Users can switch between privacy mode and normal viewing mode through simple control signals, greatly improving ease of operation
Solution Approach 2:
The backlight module provides self-service by automatically switching between different viewing angle modes based on control signals. The controller can receive instructions and automatically adjust which light source components are active, enabling the device to serve its own privacy protection needs without requiring external auxiliary tools or complex user manipulation
3Adaptability or versatility
If multiple light source components are added to enable view angle switching, then adaptability improves, but device complexity increases
Solution Approach 1:
The backlight module is divided into multiple independent light source components, each responsible for specific viewing angle regions. This segmentation allows the system to adapt to different viewing scenarios (privacy mode, normal mode, partial viewing) by selectively activating appropriate components, achieving high adaptability while keeping each component relatively simple and manageable
Solution Approach 2:
The backlight module implements dynamic adaptability by allowing real-time switching between different light source components based on viewing requirements. The controller can dynamically adjust which components are active, enabling the system to adapt to changing environmental conditions and user needs without requiring a completely different device configuration
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 seamless switching between narrow and wide view angles, enhancing user convenience and privacy by adjusting backlight ranges without the need for auxiliary tools, ensuring clear images in both viewing conditions.
Implementation Method 1
The first microstructure is arranged on a side of the first light guide unit facing away from the view angle controller, and configured to redirect light received from the first sub-light source towards the first light exit region
Implementation Method 2
The second microstructure is arranged on a side of the second light guide unit facing away from the view angle controller, and configured to redirect at least part of light received from the second sub-light source towards the second light exit region
Implementation Method 3
The third microstructure is arranged on a side of the third light guide unit facing away from the view angle controller, and configured to redirect at least part of light received from the second light guide unit towards the second light exit region
Implementation Method 4
Light emitted from the first light source component is emitted into the view angle controller and emitted out from a light exit side of the view angle controller as parallel light
Data Source
AI summary
A backlight module, a control method and control device thereof, and a corresponding display device are disclosed. With this backlight module, switching between a narrow view angle and a wide view angle is achieved without the additional need for carrying any auxiliary tools. A light exit region of the backlight module includes a first light exit region and a second light exit region located on a periphery of the first light exit region. The backlight module includes a first light source component and a second light source component. Light emitted from the first light source component is emitted out through the first light exit region, and light emitted from the second light source component is at least partially emitted out through the second light exit region. Switch control ends for the first light source component and the second light source component are not electrically connected.