Multiview Display with Reconfigurable Pixels for Dynamic FOV
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Solution Overview
Problem
Passive displays, which do not emit light, are limited in their applications due to their inability to emit light, necessitating the use of external light sources to function as active displays.
Innovation Solution
A multiview display system that employs dynamically reconfigurable multiview pixels and an array of multibeam elements to provide directional light beams with different principal angular directions, allowing for the creation of a dynamic field of view and the display of multiview images without the need for external light sources.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If passive displays are used, then power consumption is reduced, but the ability to emit light is lost
Solution Approach 1:
The display system dynamically switches between passive and active modes by reconfiguring the light valve array. When passive mode is selected, the light valves are configured to reflect ambient light for low power consumption. When active mode is selected, the light valves are reconfigured to work with the backlight assembly for light emission. This dynamic reconfiguration resolves the contradiction between power consumption and light emission capability.
Solution Approach 2:
The system changes operational parameters of the display by adjusting the state of light valves and the configuration of multiview pixels. By modifying parameters such as pixel shape, field of view angle, and light valve orientation, the display can transition between passive and active modes, thereby changing light emission characteristics while controlling power consumption.
2Illumination intensity
If external light sources are added to passive displays, then light emission capability is improved, but device complexity increases
Solution Approach 1:
The patent merges the passive and active display modes into a single integrated system. The light valve array serves dual purposes: reflecting ambient light in passive mode and modulating backlight in active mode. The multiview pixel structure is designed to function in both modes simultaneously, eliminating the need for separate display systems and reducing overall device complexity.
Solution Approach 2:
The display system is designed with universal components that perform multiple functions. The light valve array can operate in both reflective and transmissive modes. The multiview pixel structure provides both passive viewing and active light emission capabilities. This multi-functionality reduces the need for additional specialized components, thereby limiting the increase in device complexity.
3Adaptability or versatility
If multiview pixels with dynamic reconfiguration are implemented, then field of view adaptability is improved, but manufacturing complexity increases
Solution Approach 1:
The display is segmented into multiple light valves within each multiview pixel, where each light valve can be independently controlled and configured. This segmentation allows dynamic reconfiguration of the pixel shape and field of view by adjusting individual light valves. The modular nature of segmented light valves simplifies manufacturing compared to creating entirely reconfigurable pixels from scratch.
Solution Approach 2:
The multiview pixels incorporate dynamic elements such as adjustable light valve orientations and reconfigurable pixel boundaries. These dynamic features are implemented using standard adjustable components rather than complex mechanical structures, making them more manufacturable. The dynamic reconfiguration is achieved through electronic control of light valve states rather than physical reassembly.
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 multiview display system effectively addresses the limitations of passive displays by enabling the emission of modulated light beams in different directions, providing a dynamic field of view that can be adjusted based on the orientation of the display or the position of the user, thus enhancing the display's functionality and versatility.
Implementation Method 1
a light guide configured to guide light from the light source
Implementation Method 2
a plurality of multibeam elements spaced apart from one another along a length of the light guide, each multibeam element configured to scatter out a portion of the guided light from the light guide as a plurality of directional light beams having different principal angular directions from one another
Data Source
AI summary
A multiview display employs an array of multibeam elements configured to provide directional light beams having different principal angular directions corresponding to different view directions of the multiview display. Moreover, the multiview display includes an array of light valves configured to modulate the directional light beams as a multiview image to be displayed by the multiview display, where a multiview pixel of the multiview display includes a set of light valves of the light valve array corresponding to a multibeam element of the multibeam element plurality and being configured to modulate directional light beams from the multibeam element. Furthermore, a shape of the multiview pixel is dynamically reconfigurable to provide the multiview image having a dynamic field of view (FOV). The FOV may be modified based on a monitored orientation of the multiview display, a monitored position of a user relative to the multiview display, or both.