Multiview Display Offset Sub-pixel Rows Mitigate Color Fringing

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Solution Overview

Problem

Passive electronic displays, which rely on external light sources for illumination, face limitations in practical applications due to their inability to emit light, necessitating the use of backlights that can increase power consumption and complexity.

Innovation Solution

A multiview display system employing an array of light valves with offset rows of color sub-pixels to modulate directional light beams, mitigating color fringing and enhancing light emission capabilities without the need for external backlights.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Illumination intensity

If passive displays are coupled to an external light source (backlight), then the display can emit light and function as an active display, but power consumption and device complexity increase

Engineering Contradiction:

Improvelight emission capabilityVSAvoidpower consumption

Core Design Contradiction:

Illumination intensityVSUse of energy by stationary object

Solution Approach 1:

The patent combines the light source and display elements into a single integrated structure where light-emitting elements (LEDs or OLEDs) are positioned directly behind corresponding pixels. This integration eliminates the need for a separate backlight unit, reducing both power consumption and device complexity while maintaining active display functionality.

Inventive Principle:

Principle #5Merging (Combining)

Solution Approach 2:

The patent extracts and removes the traditional backlight unit from the display structure. By eliminating the separate backlight component and its associated control systems, the design reduces power consumption and simplifies the overall device architecture while achieving light emission through the integrated light-emitting elements.

Inventive Principle:

Principle #2Taking out (Extraction)

2Illumination intensity

If color filters are used to transform white light into various colors, then color display is achieved, but light loss and reduced efficiency occur

Engineering Contradiction:

Improvecolor display capabilityVSAvoidlight loss

Core Design Contradiction:

Illumination intensityVSLoss of energy

Solution Approach 1:

The patent applies local quality by using individually controllable light-emitting elements that emit specific colors directly (red, green, blue, or white LEDs/OLEDs) rather than using a single white backlight with color filters. Each pixel location has tailored light-emitting properties matching the required color, eliminating light loss through filtering while achieving full-color display capability.

Inventive Principle:

Principle #3Local quality

3Illumination intensity

If traditional LCD structure with color filters is used, then color images are displayed, but response time and refresh rate are limited

Engineering Contradiction:

Improvecolor image displayVSAvoidresponse time

Core Design Contradiction:

Illumination intensityVSSpeed

Solution Approach 1:

The patent replaces the mechanical liquid crystal rotation system with electronically controlled light-emitting elements. Instead of using LCD panels that require liquid crystal molecules to physically rotate and reorient (which limits response time), the invention uses LED or OLED elements that can change color and intensity almost instantaneously through electrical control, dramatically improving response time and refresh rate while maintaining color image display capability.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

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 system effectively provides multiple views of a multiview image with improved light emission and reduced color fringing, enabling more efficient and flexible display solutions without the reliance on external light sources.

Implementation Method 1

an array of light valves having a repeating plurality of color sub-pixels arranged as a plurality of multiview pixels configured to modulate directional light beams as color pixels

Methodology Applied

Scientific EffectLight modulation:

Implementation Method 2

A first row of the repeating plurality of the color sub-pixels is offset from or shifted with respect to a second row of the repeating plurality of color sub-pixels in the row direction

Methodology Applied

Scientific EffectOptical offset/shift:

Data Source

PatentUS11846800B2Multiview display and method having shifted color sub-pixels

Publication Date: 2023.12.19 LELIS INC AS AGENT

AI summary

A multiview display includes an array of light valves having rows of a repeating plurality of color sub-pixels and arranged as a plurality of multiview pixels configured to modulate directional light beams as color pixels of views of a multiview image. A first row of the repeating plurality of color sub-pixels is offset from a second row of the repeating plurality of color sub-pixels in a row direction by an integer multiple of a width of a color sub-pixel. The offset of the first and second rows is configured to provide corresponding color sub-pixels in adjacent multiview pixels having different colors to mitigate color fringing associated with the color pixel of the multiview image.