Slanted Multibeam Columns for Balanced Resolution in Parallax Displays
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Passive electronic displays, such as LCDs and EP displays, lack the ability to emit light, limiting their practical applications due to inherent low power consumption but insufficient light emission capabilities.
Innovation Solution
A horizontal parallax multiview display employing slanted multibeam columns and a light control film is introduced, which scatters light out of a light guide to provide balanced resolution and emit directional light beams with different principal angular directions, enabling light emission and improved display capabilities.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If passive displays (LCDs, EP displays) are used, then power consumption is reduced, but light emission capability is insufficient
Solution Approach 1:
The display system is segmented into two functional parts: a passive display panel (LCD or EP display) that consumes minimal power, and an active backlight unit that provides light emission. This segmentation allows each component to optimize its function - the display panel maintains low power consumption while the backlight unit supplies sufficient illumination.
Solution Approach 2:
A light guide plate is introduced as an intermediary component between the backlight unit and the display panel. The light guide plate distributes light uniformly across the display area, enabling the passive display to achieve sufficient illumination intensity without requiring the display panel itself to emit light, thus maintaining low power consumption.
2Ease of manufacture
If conventional backlight designs are used, then manufacturing is simplified, but resolution balance between horizontal and vertical directions is poor
Solution Approach 1:
The light guide plate incorporates asymmetric light extraction structures with different pitch values in horizontal and vertical directions. Specifically, the pitch in the first direction differs from the pitch in the second direction, allowing independent optimization of light extraction efficiency for each axis. This asymmetric design enables balanced resolution in both horizontal and vertical directions while maintaining compatibility with conventional manufacturing processes.
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 a multiview display with balanced horizontal and vertical resolution, comparable to full parallax displays, and efficient light emission, enhancing the practical applications of passive displays by overcoming their inherent limitations.
Implementation Method 1
guiding light along a length of a light guide as guided light
Implementation Method 2
scattering out of the light guide a portion of the guided light as directional light beams
Data Source
AI summary
A horizontal parallax multiview display employs a plurality of slanted multibeam columns to scatter out of a light guide a plurality of directional light beams having principal angular directions corresponding to different view directions of the horizontal parallax multiview display. The plurality of directional light beams is modulated using an array of light valves to provide a multiview image having horizontal parallax. Further, the horizontal parallax multiview display employs a light control film having a slanted light control axis aligned with slanted multibeam columns of the slanted multibeam column plurality. The light control film is configured to control a view angle of the multiview image in a direction orthogonal to the horizontal parallax. The slanted multibeam columns may provide the multiview displays with a balanced resolution.