Display Light Control Layer with Voltage-Switched Blocking Units
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Solution Overview
Problem
Light emitted from display devices in vehicles can obstruct a driver's field of vision, either directly or after being reflected by the windshield, necessitating a solution to prevent unintended light visibility while allowing a wide viewing angle for the user.
Innovation Solution
A display device with a light control layer that includes a light blocking component, controlled by voltages applied to electrode layers, allowing for a first mode to block unintended light and a second mode to enable a wide viewing angle by adjusting the disposition of light blocking units.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If a light control layer with light blocking component is disposed on the display panel to prevent unintended light visibility, then the driver's field of vision is protected from obstruction, but the viewing angle of the display device is reduced
Solution Approach 1:
The light blocking units are designed to be movable within the light blocking component, transitioning between a first disposition (substantially uniformly disposed) and a second disposition (adjacent to electrode layers). This dynamic reconfiguration allows the system to switch between blocking unintended light and providing wide viewing angle, resolving the contradiction between these two requirements.
Solution Approach 2:
The position and disposition parameters of the light blocking units are changed based on operational mode. By controlling the positions of the first and second electrode layers relative to the light blocking component, the system adjusts the disposition of light blocking units to achieve either light blocking or wide viewing angle functionality.
2Object-affected harmful factors
If the light blocking units are uniformly disposed to block light effectively, then unintended light visibility is prevented, but the viewing angle becomes limited
Solution Approach 1:
The light blocking units transition from a static uniform disposition to a dynamic configuration where they can be positioned adjacent to electrode layers. This dynamic adjustment enables the system to switch between effective light blocking mode and wide viewing angle mode, resolving the contradiction between these two operational requirements.
Solution Approach 2:
The light blocking component is divided into multiple discrete light blocking units that can be independently positioned. This segmentation allows selective placement of units adjacent to electrode layers while maintaining uniform distribution in other areas, enabling flexible control over both light blocking effectiveness and viewing angle.
3Object-affected harmful factors
If a light control layer is added to control light emission angle, then unintended light visibility is prevented, but the device complexity increases
Solution Approach 1:
The light control layer integrates multiple functions into a single structure: it includes both the light blocking component with movable light blocking units and the first and second electrode layers. This multi-functional integration achieves light blocking and viewing angle control without adding separate complex subsystems, resolving the contradiction between functionality and complexity.
Solution Approach 2:
The patent combines the light blocking function and electrode function into an integrated light control layer structure. The electrode layers are positioned relative to the light blocking component, merging light control and electrical control functions into a unified structure, thereby reducing overall device complexity while maintaining effectiveness.
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
The solution effectively prevents unintended light from being visible to the user while allowing a wider viewing angle in the second mode, enhancing user experience and safety by reducing visual obstruction.
Implementation Method 1
a light control layer including a light blocking component that blocks at least some of the light
Data Source
AI summary
A display device may include: a display panel that outputs light for displaying an image; a first electrode layer disposed on the display panel; a light control layer including a light blocking component that blocks at least some of the light; and a second electrode layer disposed on the light control layer. The light blocking component may include at least one light blocking unit that is controlled in response to voltages applied to the first electrode layer and the second electrode layer. The light blocking unit may be substantially uniformly disposed in the light blocking component in a first mode, and may be disposed adjacent to any one of the first electrode layer and the second electrode layer in a second mode different from the first mode.