Modular Projection Screen Assembly for Flatness and Compact Storage

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Solution Overview

Problem

Conventional reflection-type screens face challenges in maintaining flatness during storage and use, leading to image quality deterioration due to wrinkles and curls, and complex handling procedures.

Innovation Solution

A screen design featuring a screen base body composed of multiple substrates with detachable connecting parts that oppose each other to cancel stresses, enhancing rigidity and flatness, and a housing with a combining unit and winding shafts for compact storage and easy assembly.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Shape

If the screen base body is made as a single large substrate, then flatness during use is improved, but storage compactness deteriorates

Engineering Contradiction:

Improveflatness of screen base bodyVSAvoidstorage space requirement

Core Design Contradiction:

ShapeVSVolume of moving object

Solution Approach 1:

The screen base body is divided into multiple substrates that can be separated for storage and combined for use. Each substrate is a manageable unit that can be wound around a winding shaft, enabling compact storage while maintaining the ability to form a large flat screen when assembled.

Inventive Principle:

Principle #1Segmentation

2Volume of moving object

If multiple substrates are combined to form the screen base body, then storage compactness is improved, but rigidity and flatness during use deteriorate

Engineering Contradiction:

Improvestorage compactnessVSAvoidrigidity of screen base body

Core Design Contradiction:

Volume of moving objectVSStrength

Solution Approach 1:

Multiple substrates are combined through connecting parts to form a unified screen base body with high rigidity. The connecting parts ensure strong mechanical coupling between substrates, creating a structure that maintains flatness and resistance to deformation during use.

Inventive Principle:

Principle #5Merging (Combining)

3Shape

If bars are added to increase flatness, then flatness is improved, but device complexity and handling worsen

Engineering Contradiction:

Improveflatness of screen base bodyVSAvoidstructure complexity

Core Design Contradiction:

ShapeVSDevice complexity

Solution Approach 1:

Instead of adding complex bar structures, the screen is segmented into multiple substrates that naturally provide structural support. The substrates themselves, when properly connected, create the necessary rigidity without requiring additional reinforcing elements.

Inventive Principle:

Principle #1Segmentation

4Ease of operation

If a rail member is added for guiding the screen base body, then handling during use is improved, but device complexity and storage space worsen

Engineering Contradiction:

Improvehandling of screen base bodyVSAvoidstructure complexity

Core Design Contradiction:

Ease of operationVSDevice complexity

Solution Approach 1:

The screen system is designed to be self-sufficient without requiring external rail members for guidance. The substrates and connecting parts are configured to automatically align and connect during deployment, eliminating the need for separate guiding infrastructure.

Inventive Principle:

Principle #25Self-service

Data Source

PatentUS8863810B2Screen

Publication Date: 2014.10.21 SEIKO EPSON CORP

AI summary

A screen includes: a screen base body, wherein the screen base body includes a plurality of substrates, each of the substrates has a sheet part and a connecting part provided at least one of the surfaces of the sheet part, the connecting part of one of the substrates is detachably connected with the connecting part of the other substrate, and when the screen is used the screen base body is produced by connecting the connecting parts of the respective substrates such that the substrates can be combined.