Anti-glare Polarizer for Display Device Moiré Elimination

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Solution Overview

Problem

The grid structure of functional components in display devices, such as touch modules, interferes with the display panel, causing Moiré patterns and affecting the display effect due to interference with pixels.

Innovation Solution

A second polarizer is arranged externally to the functional component, acting as an anti-glare polarizer to scatter light rays and reduce Moiré patterns by atomizing images, thereby improving the display effect.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If a functional component with grid structure (touch module) is added to the display device, then the device gains additional functionality (touch control), but Moiré patterns appear in the displayed images due to interference between the grid structure and display panel pixels

Engineering Contradiction:

Improvetouch control functionVSAvoidMoiré patterns

Core Design Contradiction:

Adaptability or versatilityVSObject-affected harmful factors

Solution Approach 1:

A second polarizer is introduced as an intermediary component between the functional component (touch module) and the display panel. This second polarizer has its polarization direction oriented at 45 degrees relative to both the first polarizer and the functional component's grid structure, acting as a mediator that scatters light rays and eliminates Moiré patterns while allowing the touch control function to operate normally

Inventive Principle:

Principle #24Intermediary (Mediator)

2Object-affected harmful factors

If a second polarizer is added to eliminate Moiré patterns, then display quality improves, but device complexity increases due to additional components

Engineering Contradiction:

ImproveMoiré patterns eliminationVSAvoidnumber of polarizer layers

Core Design Contradiction:

Object-affected harmful factorsVSDevice complexity

Solution Approach 1:

The second polarizer is designed to perform multiple functions simultaneously: it eliminates Moiré patterns caused by the functional component's grid structure, scatters light rays to reduce glare, and maintains the overall display function. This multi-functionality justifies the addition of the component by providing multiple benefits from a single element

Inventive Principle:

Principle #6Universality (Multi-functionality)

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 external anti-glare polarizer effectively eliminates Moiré patterns and shadows caused by grid structure interference, enhancing the display quality by scattering light rays and reducing image distortions.

Implementation Method 1

the second polarizer is capable of scattering light rays that penetrate the second polarizer

Methodology Applied

Scientific EffectLight scattering: Scattering

Data Source

PatentUS10168568B2Display device

Publication Date: 2019.01.01 BOE TECHNOLOGY GROUP CO LTD

AI summary

The present disclosure provides a display device comprising a display panel, wherein a first polarizer is arranged at a side of the display panel that is opposite to the side for displaying images, and a functional component with a grid structure and a second polarizer are arranged in sequence along the direction away from the display panel at the side for displaying images, the second polarizer being capable of scattering light rays that penetrate the second polarizer.