Subpixel Light Emission Control for Moiré Reduction

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Solution Overview

Problem

Existing display technologies face issues with moiré patterns and crosstalk, particularly in three-dimensional display applications, due to the arrangement and spacing of subpixels.

Innovation Solution

A display method and apparatus that control light emission in a display panel with subpixels arranged in specific areas, adjusting the light emission areas for different frames of images to minimize moiré patterns and crosstalk.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Object-affected harmful factors

If subpixels are arranged with specific spacing to reduce moiré patterns, then moiré pattern visibility is reduced, but crosstalk between adjacent subpixels increases

Engineering Contradiction:
Improvemoiré pattern visibilityVSAvoidcrosstalk between subpixels
Core Design Contradiction:
Object-affected harmful factorsVSObject-generated harmful factors

Solution Approach 1:

The subpixel area is divided into multiple light emission regions (first light emission region, second light emission region, third light emission region) with different emission characteristics. This segmentation allows different regions to serve different functions: some regions emit light to reduce moiré patterns while other regions control light emission to minimize crosstalk, thereby resolving the contradiction between reducing moiré visibility and preventing crosstalk.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

Different regions within the subpixel are assigned different light emission properties. The first light emission region has different emission characteristics compared to the second and third light emission regions. This local differentiation enables each region to optimize for its specific function, with some regions prioritizing moiré reduction and others prioritizing crosstalk prevention.

Inventive Principle:
Principle #3Local quality

2Illumination intensity

If light emission area is increased to improve brightness, then brightness is enhanced, but moiré patterns and crosstalk become more prominent

Engineering Contradiction:
ImprovebrightnessVSAvoidmoiré patterns and crosstalk
Core Design Contradiction:
Illumination intensityVSObject-affected harmful factors

Solution Approach 1:

The light emission area is segmented into multiple distinct regions with different emission characteristics. This allows the total light output to be maintained for brightness while distributing the emission across regions that are optimized to minimize moiré patterns and crosstalk, rather than using a single large emission area that would exacerbate these artifacts.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The display device dynamically controls which light emission regions are activated based on the displayed content and viewing conditions. This dynamic adjustment allows optimization of brightness while minimizing moiré patterns and crosstalk for different image scenarios, rather than using a fixed light emission configuration.

Inventive Principle:
Principle #15Dynamics

Data Source

PatentUS12236911B2Display method and display apparatus
Publication Date: 2025.02.25 BOE TECHNOLOGY GROUP CO LTD
  • US12236911B2 patent drawing
  • US12236911B2 patent drawing
  • US12236911B2 patent drawing

AI summary

A display method is provided. The display method includes providing a display panel having a plurality of subpixels, a respective subpixel of the plurality of subpixels including a first area, n1 number of second areas, and n2 number of third areas, the first area being between the n1 number of second areas and the n2 number of third areas, n1≥1, and n2≥1; for displaying a first frame of image, controlling light emission of the respective subpixel to be limited in the first area, m1 number of the n1 number of second areas, and m2 number of the n2 number of third areas; and for displaying a second frame of image, controlling light emission of the respective subpixel to be limited in the first area, m1′ number of the n1 number of second areas, and m2′ number of the n2 number of third areas.