Lens Grating Light-Shading Junctions for 3D Display Crosstalk

Solution Overview

Problem

In the manufacturing of lens gratings for 3D displays, irregular cross-sectional structures at junctions between lenses lead to distortion regions, causing light to be projected incorrectly and resulting in crosstalk between left and right eyes.

Innovation Solution

A lens grating design that incorporates a light-shading structure at the junctions between lenses, which shades the light to prevent incorrect projection and reduce crosstalk, achieved by forming a light-shading structure corresponding to the junction region between adjacent lenses on the substrate.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If a lens grating is manufactured using conventional processes, then the manufacturing process is simple, but irregular cross-sectional structures form at lens junctions causing image crosstalk

Engineering Contradiction:

Improveimage qualityVSAvoidstructure complexity

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The invention divides the lens grating structure into distinct segments: regular lens regions and light-shading structure regions at junctions. This segmentation allows the junction areas to be treated differently from the main lens bodies, enabling precise control of light paths at critical interfaces while maintaining simple lens manufacturing processes.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The light-shading structure acts as an intermediary element between adjacent lenses. This intermediate structure blocks stray light at the junction regions, preventing crosstalk between images for left and right eyes, while not interfering with the normal function of the lenses themselves.

Inventive Principle:

Principle #24Intermediary (Mediator)

2Reliability

If light-shading structures are added at lens junctions, then crosstalk between left and right eyes is reduced, but the device complexity increases

Engineering Contradiction:

Improvecrosstalk reductionVSAvoidmanufacturing complexity

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The invention merges the light-shading structures with the lens grating substrate in a single integrated manufacturing process. The light-shading structures and lenses are formed simultaneously through imprinting, eliminating the need for separate assembly steps and reducing overall manufacturing complexity despite adding functional elements.

Inventive Principle:

Principle #5Merging (Combining)

Solution Approach 2:

The light-shading structures are formed preliminarily during the lens manufacturing process itself, before the lens grating is completed. By incorporating the shading structures during the initial imprinting step, subsequent manufacturing steps remain simple and no additional complex assembly is required.

Inventive Principle:

Principle #10Preliminary action

3Manufacturing precision

If conventional lens manufacturing is used, then the manufacturing process is fast and simple, but distortion regions cause wrong light projection positions

Engineering Contradiction:

Improvelight projection accuracyVSAvoidmanufacturing efficiency

Core Design Contradiction:

Manufacturing precisionVSProductivity

Solution Approach 1:

The light-shading structures are formed preliminarily during the lens manufacturing process itself, before the lens grating is completed. By incorporating the shading structures during the initial imprinting step, subsequent manufacturing steps remain simple and no additional complex assembly is required.

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The invention divides the lens grating structure into distinct segments: regular lens regions and light-shading structure regions at junctions. This segmentation allows the junction areas to be treated differently from the main lens bodies, enabling precise control of light paths at critical interfaces while maintaining simple lens manufacturing processes.

Inventive Principle:

Principle #1Segmentation

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 light-shading structure effectively prevents wrong light projection positions, reducing or eliminating crosstalk between left and right eyes and improving the display quality of 3D images.

Implementation Method 1

a light-shading structure is arranged corresponding to a junction region between adjacent lenses in the at least two lenses

Methodology Applied

Scientific EffectLight blocking/shading: Absorption (EM radiation)

Data Source

PatentUS20230213688A1Lens grating and manufacturing method thereof

Publication Date: 2023.07.06 BEIJING IVISUAL 3D TECH CO LTD

AI summary

The present disclosure relates to the technical field of display, and discloses a lens grating, including a substrate and at least two lenses arranged at any side of the substrate, where a light-shading structure is arranged corresponding to a junction region between adjacent lenses in the at least two lenses. light emitted towards the lens grating is shaded by at least one light-shading structure formed in the junction region between the adjacent lenses in the at least two lenses of the substrate, thereby solving a problem of wrong light projection position of subpixels caused by a distortion region formed by an irregular cross-sectional structure in the junction region between the adjacent lenses of the lens grating, and reducing or eliminating crosstalk of images for left and right eyes. The present disclosure further discloses a manufacturing method of the lens grating.