Liquid Crystal View Angle Control for Vehicle Displays
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Solution Overview
Problem
Existing display devices struggle to flexibly set a view angle range for image viewing, particularly in diverse vehicle types and environments, where the positional relation between the driver seat and the display device varies.
Innovation Solution
A display device configuration that includes a display panel, a light source, a liquid crystal panel interposed between the display panel and the light source, and a controller to manage the potential difference between electrodes in the liquid crystal panel, allowing for adjustable transmission of light to control the view angle range.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If a liquid crystal panel is placed over an image display panel to restrict the view angle range, then the image can be viewed only from specific angles (e.g., front passenger seat side), but the flexibility to adjust the view angle range according to different vehicle types and positional relations is insufficient
Solution Approach 1:
The liquid crystal panel's transmission degree is dynamically controlled by adjusting the potential difference between electrodes, enabling the view angle range to be flexibly changed according to different vehicle types and positional relations between the display device and driver seat
Solution Approach 2:
By changing the potential difference parameter applied to the liquid crystal panel, the transmission degree of light is adjusted, which directly controls the view angle range. This allows the display device to adapt to different viewing requirements in various vehicle configurations
2Object-affected harmful factors
If the view angle range is restricted using conventional display devices, then images can be prevented from being viewed from undesired angles, but it is difficult to meet the demand for flexible adjustment in different vehicle types and environments
Solution Approach 1:
The view angle range is controlled by adjusting the potential difference parameter in the liquid crystal panel, providing a simple and flexible method to prevent viewing from undesired angles while easily adapting to different vehicle types and operational environments
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 more flexible and adaptive control of the view angle range, ensuring that images can be viewed from desired angles while preventing viewing from undesired angles, such as from the driver seat in a vehicle.
Implementation Method 1
a liquid crystal panel interposed between the display panel and the light source and provided to be able to change a transmission degree of light between the display panel and the light source
Implementation Method 2
The potential difference corresponds to an angle of tilt with a smaller transmission degree of light when the liquid crystal panel is in operation
Data Source
AI summary
A display device includes: a display panel; a light source configured to emit light toward one surface side of the display panel; a liquid crystal panel interposed between the display panel and the light source and provided to be able to change a transmission degree of light between the display panel and the light source; and a controller configured to control a potential difference between two electrodes facing each other with liquid crystal interposed therebetween. The liquid crystal panel in operation is makes a transmission degree of light tilted toward one side in a longitudinal direction of the display panel in a rectangular shape and a transmission degree of light tilted toward the other side in the longitudinal direction to be different from each other. The potential difference corresponds to an angle of tilt with a smaller transmission degree of light when the liquid crystal panel is in operation.