Autostereoscopic Display Light Multiplexing for Resolution Balance
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Solution Overview
Problem
Conventional autostereoscopic displays face challenges in providing sufficient views within a small space, leading to an imbalance in horizontal and vertical resolutions, and they consume excessive power due to inefficient pixel utilization.
Innovation Solution
The implementation of a multiplexer system that controllably shifts light from pixels to provide multiple views, combined with a view selector like a lenticular lens system, allows for increased perceived pixel density and efficient power usage by using organic light-emitting devices (OLEDs) with variable refractive index lenses and prisms, enabling more views without increasing physical pixel density.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple views are provided in a narrow space, then the field of view is improved, but the horizontal resolution is reduced
Solution Approach 1:
The patent transitions from horizontal pixel arrangement to vertical pixel arrangement, allowing multiple views to be stacked vertically rather than horizontally. This dimensional change enables multiple views to coexist without compromising horizontal resolution, as each view occupies a different vertical position rather than competing for horizontal space.
Solution Approach 2:
The display is segmented into multiple vertical regions, each dedicated to a specific view. This segmentation allows independent control of each view's pixel allocation, enabling the system to provide multiple views while maintaining adequate resolution in each segment by utilizing the vertical dimension for separation.
2Adaptability or versatility
If more views are provided within a small space, then the perceived depth is improved, but the pixel density requirement exceeds conventional display capabilities
Solution Approach 1:
The patent utilizes the vertical dimension to stack multiple views, allowing 24 or more views to be accommodated within the physical constraints of conventional displays. By arranging pixels and views vertically rather than horizontally, the system achieves high perceived depth without requiring impossible horizontal pixel densities.
Solution Approach 2:
Each pixel is designed to serve multiple functions by being part of multiple views through the vertical stacking arrangement. A single pixel can contribute to multiple views depending on its vertical position and the view selection, enabling high view counts without proportionally increasing total pixel requirements.
3Adaptability or versatility
If conventional displays are used to provide multiple views, then the field of view is improved, but the power consumption increases due to inefficient pixel utilization
Solution Approach 1:
The patent implements time-multiplexing where different views are activated in periodic succession rather than simultaneously. This allows the display to cycle through multiple views, presenting each view to the appropriate viewing angle at its designated time slot, thereby reducing overall power consumption while maintaining the capability to provide multiple views.
Solution Approach 2:
The system discards the need for dedicated pixels for each view by using temporal multiplexing instead. Views are presented sequentially, with pixels being reused for different views at different times, effectively recovering and reusing pixel resources rather than requiring static allocation for each view.
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
This solution enhances the perceived pixel density and resolution in autostereoscopic displays, improving the balance between horizontal and vertical resolutions while reducing power consumption by effectively utilizing sub-pixels to create multiple views within the same physical space.
Implementation Method 1
a multiplexer system adapted to controllably shift light horizontally from each of the pixels as a function of time
Implementation Method 2
a view selector that, for each of two or more viewing perspectives, makes one of the views visible
Implementation Method 3
OLEDs make use of thin organic films that emit light when voltage is applied across the device
Implementation Method 4
variable refractive index lenses and prisms, enabling more views without increasing physical pixel density
Data Source
AI summary
An autostereoscopic display system includes a display including a plurality of addressable pixels. Each of the plurality of pixels includes two or more sub-pixels. The display is adapted to have n views in the horizontal direction wherein n is an integer greater than or equal to 2. A native pixel density of the display in the horizontal direction divided by n is greater than 75% of a native pixel density in the vertical direction. The system further includes a view selector that, for each of two or more viewing perspectives, makes one of the views visible and a multiplexer system in operative connection with the display. The multiplexer system is adapted to controllably shift light horizontally from at least one of the plurality of pixels.