Display Device Light Guide Micro Structures Viewing Angle Control
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional display devices with parallax barrier elements increase thickness, weight, and fabrication costs, and require precise alignment of components to achieve desired viewing angles, leading to assembly complexity and reduced production yield.
Innovation Solution
A display device design that omits the parallax barrier element by using a light guide plate with micro structures and dual light source devices to control light-emitting angles, allowing viewers at different positions to see full-resolution images without the need for precise alignment, thereby reducing thickness, weight, and fabrication costs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a parallax barrier element is used to control viewing angles, then different images can be provided for viewers at different positions, but the thickness, weight, and fabrication costs increase
Solution Approach 1:
The patent extracts and removes the parallax barrier element from the display device structure. Instead of using a separate parallax barrier component, the invention integrates viewing angle control functionality directly into the backlight unit through the light guide plate with micro structures, thereby eliminating the need for the parallax barrier element and reducing overall device weight
Solution Approach 2:
The patent merges the viewing angle control function with the backlight unit by integrating micro structures into the light guide plate. This combination allows the backlight unit to perform both illumination and viewing angle control functions simultaneously, eliminating the need for separate parallax barrier components
2Adaptability or versatility
If a parallax barrier element is used to control viewing angles, then different images can be provided for viewers at different positions, but the device thickness increases
Solution Approach 1:
The patent extracts and removes the parallax barrier element from the display device structure. Instead of using a separate parallax barrier component, the invention integrates viewing angle control functionality directly into the backlight unit through the light guide plate with micro structures, thereby eliminating the need for the parallax barrier element and reducing overall device thickness
Solution Approach 2:
The patent merges the viewing angle control function with the backlight unit by integrating micro structures into the light guide plate. This combination allows the backlight unit to perform both illumination and viewing angle control functions simultaneously, eliminating the need for separate parallax barrier components and reducing device thickness
3Adaptability or versatility
If a parallax barrier element is used to control viewing angles, then different images can be provided for viewers at different positions, but the fabrication costs increase
Solution Approach 1:
The patent extracts and removes the parallax barrier element from the display device structure. Instead of using a separate parallax barrier component, the invention integrates viewing angle control functionality directly into the backlight unit through the light guide plate with micro structures, thereby eliminating the need for the parallax barrier element and reducing fabrication costs
Solution Approach 2:
The patent merges the viewing angle control function with the backlight unit by integrating micro structures into the light guide plate. This combination allows the backlight unit to perform both illumination and viewing angle control functions simultaneously, eliminating the need for separate parallax barrier components and reducing fabrication costs
4Adaptability or versatility
If a parallax barrier element is used to control viewing angles, then the viewing angle control effect can be achieved, but the assembly complexity increases due to precise alignment requirements
Solution Approach 1:
The patent extracts and removes the parallax barrier element from the display device structure. Instead of using a separate parallax barrier component, the invention integrates viewing angle control functionality directly into the backlight unit through the light guide plate with micro structures, thereby eliminating the need for the parallax barrier element and simplifying assembly
Solution Approach 2:
The patent merges the viewing angle control function with the backlight unit by integrating micro structures into the light guide plate. This combination allows the backlight unit to perform both illumination and viewing angle control functions simultaneously, eliminating the need for separate parallax barrier components and their associated alignment requirements
5Adaptability or versatility
If a parallax barrier element is used to control viewing angles, then the viewing angle control effect can be achieved, but the production yield decreases
Solution Approach 1:
The patent extracts and removes the parallax barrier element from the display device structure. Instead of using a separate parallax barrier component, the invention integrates viewing angle control functionality directly into the backlight unit through the light guide plate with micro structures, thereby eliminating the need for the parallax barrier element and improving production yield
Solution Approach 2:
The patent merges the viewing angle control function with the backlight unit by integrating micro structures into the light guide plate. This combination allows the backlight unit to perform both illumination and viewing angle control functions simultaneously, eliminating the need for separate parallax barrier components and their associated alignment requirements, thereby improving production yield
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 provides reduced thickness, weight, and fabrication costs while simplifying the assembly process by eliminating the need for precise alignment, while maintaining the ability to offer different viewing angles for simultaneous image display.
Implementation Method 1
The first plane forms a first angle with respect to the bottom surface and is capable of deflecting a light beam generated by the second light source device towards the right-hand side
Implementation Method 2
A second plane forms a second angle with respect to the bottom surface and is capable of deflecting a light beam generated by the first light source device towards the left-hand side
Data Source
AI summary
A display device includes a light guide plate, a first light source device, a second light source device, a display panel, and an image light source synchronization unit. The first and second light source devices are disposed adjacent to two opposite sides of the light guide plate respectively. A plurality of first micro structures are formed on a bottom surface of the light guide plate and capable of deflecting a light beam from the second light source device towards the right-hand side and deflecting a light beam from the first light source device towards the left-hand side. The image light source synchronization unit is capable of displaying the left-side image when the first light source device is turned on and the second light source device is turned off and displaying the right-side image when the first light source device is turned off and the second light source device is turned on.