Rollable Display Screen Quilt Using Roller Mechanism
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Solution Overview
Problem
Conventional display screens are bulky and fragile, making them difficult to transport and use in portable electronic display systems.
Innovation Solution
A rollable display screen mechanism that includes a roller mechanism for stowing and deploying a flexible screen with a composite phosphor-filter layer, allowing for a lightweight, durable, and compact display device.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If conventional display screens are used, then display quality is maintained, but portability and ease of transport deteriorate due to bulkiness and fragility
Solution Approach 1:
The display screen is constructed as a flexible, rollable structure with a thin-film composite phosphor-filter layer on a flexible substrate. This allows the screen to be bent, rolled, and compressed without breaking, transforming it from a rigid fragile object to a flexible portable device that can be easily transported while maintaining display functionality.
Solution Approach 2:
The display screen is divided into separate functional layers including the flexible substrate, phosphor layer, filter layer, and protective layers. This segmentation allows each layer to be optimized independently and enables the screen to be rolled and compressed without compromising the entire structure, improving portability while maintaining strength.
2Area of stationary object
If display screen size is increased, then display area is improved, but weight and volume increase making transport difficult
Solution Approach 1:
The display screen uses thin-film materials for the phosphor-filter layer and flexible substrate, significantly reducing the weight per unit area compared to conventional rigid displays. This allows large display areas to be achieved without proportional increases in weight, improving the area-to-weight ratio for portable applications.
Solution Approach 2:
The display screen transitions from a static rigid structure to a dynamic rollable structure that can be compressed into a compact form for transport and deployed to full size for use. This dynamic transformation allows the display area to be large when needed while the weight and volume are minimized during transport.
3Ease of operation
If rigid display screen structure is used, then structural stability is maintained, but ease of transport and storage deteriorates
Solution Approach 1:
The display screen employs a flexible substrate and thin-film construction that allows the screen to be rolled, bent, and compressed without structural failure. This flexible structure maintains compositional stability through proper material selection and layer bonding while enabling easy transport and storage in compact forms.
Solution Approach 2:
The segmented layered structure with proper adhesion between layers provides structural stability when deployed while allowing flexibility for transport. Each layer is optimized to maintain its position and function during rolling and compression, ensuring the screen remains structurally sound whether in use or storage.
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
Enables a portable, high-resolution display device that can operate for extended periods without an external power source, with precise alignment of light modules to ensure high-quality image production, and easy transportation and storage due to its compact design.
Implementation Method 1
adjacent fluorescent stripes are made of different fluorescent materials that absorb light at an excitation wavelength to emit light of different colors, respectively
Implementation Method 2
the coextruded filter layer reflects white light and passes an excitation light
Implementation Method 3
a low-index refraction that is disposed in the region between any separation between phosphor regions
Data Source
AI summary
A rollable display screen for use in electronic display systems includes a rollable screen that is mechanically coupled to a roller mechanism and has a plurality of pixel elements disposed thereon. The roller mechanism is configured as a stowing mechanism for the rollable screen, and may be further configured to deploy the rollable screen as a substantially planar viewing surface. The rollable display screen can be advantageously used for a durable and easily transported electronic display device since the rollable display screen is light-weight, durable, and compact.