Stereoscopic Display Panel Subpixel Layout for Low Luminance Scattering

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Solution Overview

Problem

Existing 3D display technologies suffer from issues such as image quality degradation due to passive glasses use or flickering with shutter glasses, and luminance scattering in non-glasses types like lenticular and parallax barriers.

Innovation Solution

A stereoscopic image display panel with saw-toothed or hexagonal subpixels and a bank layer between light-emitting regions, featuring different color arrangements and dispositions to reduce luminance scattering and enable both 2D and 3D viewing without glasses.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of manufacture

If a conventional rectangular subpixel arrangement is used, then the display structure is simple, but left-right luminance scattering occurs in stereoscopic images

Engineering Contradiction:
Improvesubpixel structure simplicityVSAvoidluminance scattering
Core Design Contradiction:
Ease of manufactureVSObject-affected harmful factors

Solution Approach 1:

The patent applies asymmetry by configuring subpixels with different shapes (circular, square, rectangular, triangular, or polygonal) and arranging them in asymmetric patterns within each pixel unit. This asymmetric arrangement prevents symmetric light diffusion paths that cause left-right luminance scattering, thereby improving stereoscopic image quality while maintaining manufacturing feasibility through standardized fabrication processes.

Inventive Principle:
Principle #4Asymmetry

2Object-affected harmful factors

If saw-toothed light-emitting regions are implemented, then luminance scattering is reduced, but manufacturing complexity increases

Engineering Contradiction:
Improveluminance scatteringVSAvoidfabrication complexity
Core Design Contradiction:
Object-affected harmful factorsVSEase of manufacture

Solution Approach 1:

The patent applies local quality by implementing saw-toothed light-emitting regions only in specific subpixels rather than uniformly across all subpixels. This localized approach reduces luminance scattering in critical areas while minimizing the overall manufacturing complexity, as not all regions require the complex saw-toothed structure.

Inventive Principle:
Principle #3Local quality

3Object-affected harmful factors

If different shaped subpixels are used, then left-right luminance scattering is reduced, but device complexity increases

Engineering Contradiction:
Improveluminance scatteringVSAvoidsubpixel configuration complexity
Core Design Contradiction:
Object-affected harmful factorsVSDevice complexity

Solution Approach 1:

The patent applies segmentation by dividing each pixel into multiple subpixels with different shapes (circular, square, rectangular, triangular, or polygonal) arranged in specific patterns. This segmentation allows each subpixel to contribute differently to light emission, reducing left-right luminance scattering while maintaining overall device functionality through coordinated operation of segmented elements.

Inventive Principle:
Principle #1Segmentation

Data Source

PatentUS12471472B2Stereoscopic image display panel and stereoscopic image display device
Publication Date: 2025.11.11 LG DISPLAY CO LTD
  • US12471472B2 patent drawing
  • US12471472B2 patent drawing
  • US12471472B2 patent drawing

AI summary

A stereoscopic image display device includes a stereoscopic image display panel that includes a plurality of left-eye subpixels configured to display a left-eye image, a plurality of right-eye subpixels configured to display a right-eye image, and a bank layer disposed at an interface between light-emitting regions of the subpixels, wherein the light-emitting region of each subpixel has a saw-toothed shape that remedies left-right luminance scattering of a stereoscopic image and implementing 2D and 3D with a single display panel.