Eye-Tracked 3D Display Viewpoint Conversion for Low Crosstalk

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Solution Overview

Problem

Existing display devices suffer from crosstalk issues that degrade the quality of three-dimensional (3D) images, particularly in stereoscopic displays that utilize binocular parallax to create depth and three-dimensionality.

Innovation Solution

A display device with a viewpoint separation unit, such as a lenticular lens or parallax barrier, separates viewpoint images for each eye position, and a control unit adjusts sub-pixel brightness and activation based on eye tracking to minimize crosstalk, ensuring that only the correct images are displayed to the left and right eyes, with crosstalk reduced to 5% or less.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If viewpoint images are displayed using a display panel without crosstalk reduction, then the display device can show three-dimensional images, but crosstalk occurs between adjacent viewpoint images degrading image quality

Engineering Contradiction:
Improveimage qualityVSAvoidcrosstalk
Core Design Contradiction:
ReliabilityVSObject-generated harmful factors

Solution Approach 1:

The patent extracts and eliminates harmful crosstalk by identifying adjacent viewpoint images that cause interference and removing them from the display process. The control unit determines which adjacent viewpoint images need to be removed based on eye position and viewpoint separation, thereby eliminating the harmful factor while preserving the desired 3D image quality.

Inventive Principle:
Principle #2Taking out (Extraction)

Solution Approach 2:

The patent applies local quality by differentiating the treatment of different viewpoint images based on their spatial relationship to the target eye position. Adjacent viewpoint images are selectively removed or adjusted only in regions where they cause crosstalk, while other viewpoint images remain unaffected. This localized approach maintains image quality where needed without unnecessarily altering the entire display content.

Inventive Principle:
Principle #3Local quality

2Productivity

If all sub-pixels are activated to display complete viewpoint images, then full image content is displayed, but power consumption increases

Engineering Contradiction:
Improveimage display completenessVSAvoidpower consumption
Core Design Contradiction:
ProductivityVSUse of energy by moving object

Solution Approach 1:

The patent extracts only the necessary sub-pixels that need to be activated for displaying the current viewpoint image to the target eye. By removing unnecessary sub-pixel activation based on eye position and viewpoint separation calculations, the system reduces power consumption while maintaining complete image display for the relevant viewing region.

Inventive Principle:
Principle #2Taking out (Extraction)

Solution Approach 2:

The patent applies partial action by activating only the necessary subset of sub-pixels required for the current viewpoint display rather than all sub-pixels. This partial activation approach ensures sufficient image quality for the target eye position while avoiding the excessive energy consumption that would result from activating the entire display panel.

Inventive Principle:
Principle #16Partial or excessive action

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 reduces crosstalk in 3D images, enhancing image quality and potentially reducing power consumption by optimizing sub-pixel usage.

Implementation Method 1

The viewpoint separation unit includes a lenticular lens

Methodology Applied
Scientific EffectOptical refraction: Refraction

Implementation Method 2

The viewpoint separation unit includes a parallax barrier

Methodology Applied
Scientific EffectLight blocking: Absorption (EM radiation)

Data Source

PatentUS12501013B2Display device and a method of driving the same
Publication Date: 2025.12.16 SAMSUNG DISPLAY CO LTD
  • US12501013B2 patent drawing
  • US12501013B2 patent drawing
  • US12501013B2 patent drawing

AI summary

A display device including: a display panel including sub-pixels; a viewpoint separation unit configured to separate viewpoint images displayed by the display panel for each viewpoint; and a control unit configured to determine a left eye viewpoint image provided to a left eye viewpoint corresponding to a left eye position of a viewer and a right eye viewpoint image provided to a right eye viewpoint corresponding to a right eye position of the viewer, wherein the control unit converts left eye adjacent viewpoint images provided to viewpoints adjacent to the left eye viewpoint into the left eye viewpoint image, and converts right eye adjacent viewpoint images provided to viewpoints adjacent to the right eye viewpoint into the right eye viewpoint image.