Static Multiview Display Using Micro-Slit Scattering Elements
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Solution Overview
Problem
Passive displays, such as liquid crystal displays (LCDs) and electrophoretic displays (EP), lack the ability to emit light, limiting their practical applications due to inherent low power consumption and limited use cases.
Innovation Solution
A static multiview display system utilizing micro-slit scattering elements that reflectively scatter guided light as directional beams to encode view pixels, providing a static or quasi-static multiview image with predetermined intensity and direction, employing a light guide and micro-slit scattering elements with sloped reflective sidewalls to control light emission.
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 patent introduces an active light source (laser or LED) as an intermediary that provides illumination to the passive display medium. This mediator enables the passive display to emit light without requiring the display material itself to be active, thus maintaining low power consumption while restoring light emission capability through the external light source.
Solution Approach 2:
The patent changes the operational parameters of the display system by introducing controlled light injection at specific wavelengths and intensities. By modulating the light source parameters (intensity, wavelength, temporal characteristics), the system achieves dynamic control over the displayed information while maintaining the passive nature of the display medium, thereby balancing power consumption with light emission capability.
2Ease of manufacture
If traditional passive displays are used, then manufacturing simplicity is maintained, but multiview image capability is limited
Solution Approach 1:
The patent segments the display into multiple independent light-emitting regions or pixels, each capable of being independently controlled. This segmentation enables the display to present different images or views to different observers simultaneously, achieving multiview capability while maintaining the simplicity of passive display manufacturing for each individual segment.
Solution Approach 2:
The patent introduces a new dimension of control by enabling light emission in multiple directions simultaneously from the passive display surface. Through techniques such as light guide structures or microlens arrays, the system creates angular multiplexing that allows a single passive display to serve multiple viewing angles, thereby enhancing versatility without complicating the basic passive display manufacturing process.
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 the display of static or quasi-static multiview images with controlled light emission, enhancing the applicability of passive displays in various devices by providing multiple views with defined intensity and direction, thus overcoming the limitations of traditional passive displays.
Implementation Method 1
micro-slit scattering elements configured to reflectively scatter guided light as directional beams
Implementation Method 2
micro-slit scattering elements configured to reflectively scatter guided light as directional beams
Data Source
AI summary
A static multiview display and method of static multiview display operation include micro-slit scattering elements configured to reflectively scatter out the guided light from the light guide as a corresponding plurality of directional light beams that encode view pixels of a static multiview image. The static multiview display includes a light guide configured to guide light and a plurality of the micro-slit scattering elements, each micro-slit scattering element of the micro-slit scattering element plurality is configured to reflectively scatter out a different one of directional light beams having a relative intensity and a direction that encode a corresponding view pixel of the static multiview image. The micro-slit scattering elements each comprise a sloped reflective sidewall having a slope angle that is tilted away from the propagation direction of the guided light that provides the reflective scattering.