Multi-view Display Color Barrier Segmentation
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Solution Overview
Problem
Conventional multi-view displays have limited viewing zones with significant cross-talk regions, restricting the positions of viewers and compromising safety in automotive applications, as they struggle to create large viewing zones without substantial cross-talk.
Innovation Solution
A multi-view display configuration featuring a display panel with imaging units and color filters, along with a color barrier made of color filter material, positioned to selectively direct light to separate viewing zones, reducing cross-talk and increasing viewing zone sizes by optimizing the pitch and sequence of color filters and barriers.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If conventional multi-view display techniques are used, then multiple views can be presented to different users, but the viewing zones are small and cross-talk regions are large
Solution Approach 1:
The invention segments the display into multiple imaging units (first, second, and third imaging units) with distinct color filter arrangements. Each imaging unit directs light to specific viewing zones, creating separate visual channels. The barrier with color portions further segments the light paths, ensuring that each viewer receives only the intended information from their designated viewing zone without cross-talk interference.
Solution Approach 2:
The invention applies local quality by assigning different color filter sequences to different imaging units. The first imaging unit has color filters in a first sequence, the second imaging unit has color filters in a second sequence (reversed from the first), and the barrier has color portions arranged in sequences that correspond to these reversed orders. This local differentiation enables each imaging unit to direct light selectively to specific viewing zones, creating large viewing zones without cross-talk.
2Adaptability or versatility
If the viewing zones are made larger, then viewer positioning flexibility is improved, but cross-talk between views increases
Solution Approach 1:
The display is segmented into multiple imaging units (first, second, third imaging units) with different color filter arrangements. Each imaging unit is responsible for directing light to specific viewing zones. The barrier with color portions further segments the light paths, ensuring that even when viewing zones are large, each viewer receives only the intended information from their designated zone without cross-talk from other views.
Solution Approach 2:
Different color filter sequences are applied locally to different imaging units. The first imaging unit uses a first color sequence, the second imaging unit uses a reversed second color sequence, and the barrier uses corresponding color portions. This local quality differentiation allows each imaging unit to selectively direct light to specific viewing zones, enabling large viewing zones with enhanced viewer positioning flexibility while preventing cross-talk through color-based spatial filtering.
3Use of energy by moving object
If a barrier with high transmission is used, then light efficiency is improved, but viewing zone separation is reduced
Solution Approach 1:
The barrier incorporates color portions with specific color sequences that correspond to the reversed color sequences of the imaging units. This local quality matching allows the barrier to selectively transmit light based on color and spatial position. The color portions are arranged to transmit light from specific imaging units to specific viewing zones while blocking light from other imaging units, achieving both high light efficiency and effective viewing zone separation simultaneously.
4Area of stationary object
If LCD glass thickness is increased to create large viewing angles, then viewing zone size is improved, but the display becomes infeasible due to excessive thickness
Solution Approach 1:
The invention segments the light direction function across multiple imaging units with different color filter arrangements rather than relying on a single thick glass layer. Each imaging unit (first, second, third) with its specific color filter sequence directs light to particular viewing zones. This segmentation allows the system to achieve large viewing zones through color-based spatial filtering rather than through increased glass thickness, making the display feasible with standard thin glass substrates.
Solution Approach 2:
The invention uses local quality differentiation through color filter sequences arranged in specific patterns across different imaging units. The first imaging unit has color filters in a first sequence, the second imaging unit has color filters in a reversed second sequence, and the barrier has color portions arranged in corresponding sequences. This local quality arrangement enables each imaging unit to selectively direct light to specific viewing zones, achieving large viewing zones without requiring excessive glass thickness.
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 effectively creates larger viewing zones with minimized cross-talk, enhancing viewer positioning flexibility and safety by ensuring that information intended for one viewer is not inadvertently displayed to others, particularly in automotive environments.
Implementation Method 1
a barrier including a plurality of colour portions comprising colour filter material, the colour portions being arranged according to a second pitch that is substantially equal to twice the first pitch and in a second sequence of colours that corresponds to the first sequence of colours when reversed in order
Data Source
AI summary
A multi view display (49) is arranged to provide large viewing zones (23, 24) while producing little or no cross-talk The display may include a barrier (20) comprising a plurality of color portions (20a, 20b, 20c) that co-operate with color filters (19a-19f) in a display panel (14) to selectively direct light to the viewing zones (23, 24) A lenticular screen (30) may be arranged to create or image light lines onto imaging units (32a, 32f) of the display panel (14) that are spaced from one another, so that adjacent units (32a, 32f) are illuminated by light from different lenses (30a, 30b, 30c), directed towards different viewing zones (23, 24) A light source (35) may generate the light at positions aligned with boundaries between adjacent lenses (30a, 30b, 30c) The imaging units may be operated so that units (32a, 32b) displaying information for the first viewing zone (23) are separated from units (32d, 32e) displaying information for the second viewing zone (24) by units (32c, 32f) not used to display information Adjacent columns of units (32a, 32b) may be used to display information to one viewing zone (23) The viewing zones (23, 24) may be enlarged using a scatterer (36) A switchable diffuser (40) or barrier (48) may be provided so that the display (49) can operate in different multi-view and/or single view modes.